As per the combination method, there are 1260 ways in which a team of 10 students with 6 boys and 4 girls can be formed from a middle school classroom containing 15 students with 9 boys.
To solve this problem, we need to use the concept of combinations. A combination is a way of selecting items from a larger group where the order of selection does not matter. In this problem, we are selecting a team of 10 students, and the order in which we select the students does not matter.
Using this formula, we can find the number of ways to select 6 boys from a group of 9 as:
⁹C₆ = 9! / (6! x (9-6)!) = 84
Similarly, the number of ways to select 4 girls from a group of 6 is:
⁶C₄ = 6! / (4! x (6-4)!) = 15
To find the total number of ways to form a team of 10 students with 6 boys and 4 girls, we need to multiply the number of ways to select 6 boys and 4 girls. This is because the selection of boys and girls is independent of each other, and we can choose them in any order.
Therefore, the total number of ways to form a team of 10 students with 6 boys and 4 girls is:
84 x 15 = 1260
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the points corresponding to a complex number and its complex conjugate are plotted in the complex plane. what type of triangle do these points form with the origin?
The triangle formed by a complex number and its complex conjugate with the origin is an isosceles right triangle.
When a complex number and its complex conjugate are plotted in the complex plane, the two points are reflected about the real axis. Thus, the triangle formed by these points and the origin is an isosceles triangle with the real axis as its axis of symmetry.
Since the complex conjugate has the same magnitude as the original complex number, the two sides of the isosceles triangle have equal length. Therefore, the angle opposite the base (i.e., the origin) is a right angle, since it is the angle between the real axis and the imaginary axis.
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Which angles are supplementary to <4 iready
Any angle that shares a common vertex with <4 and whose measure adds up to 180 degrees is supplementary to <4.
To determine which angles are supplementary to <4, we first need to understand the concept of supplementary angles. Supplementary angles are pairs of angles whose sum is 180 degrees. In other words, if we have two angles, and their measures add up to 180 degrees, then they are supplementary to each other.
To find angles that are supplementary to <4, we need to look for other angles that add up to 180 degrees with <4. We can do this by examining the angles that intersect <4 or that share a common vertex with <4.
One way to identify such angles is to draw a diagram of the situation. Suppose we have a line with <4 marked on it. We can then draw another line that intersects the first line at <4, creating two angles on either side of <4. Let's call these angles A and B, where A is adjacent to <4 and B is adjacent to the other side of <4.
If we can find angle A or angle B, we can determine the other angle that is supplementary to <4. We know that A and B add up to 180 degrees, so if we find one of these angles, we can subtract it from 180 degrees to find the other angle.
To summarize, to find angles that are supplementary to <4, we can:
Draw a diagram of the situation, with <4 marked on a line and another line intersecting it at <4.
Identify the adjacent angles on either side of <4.
Label these angles A and B.
Determine the measure of either A or B.
Subtract the measure of the known angle from 180 degrees to find the measure of the other angle.
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whats the formula for solving the area of a circle? lol
[tex]A= \pi r^{2}[/tex]
Answer:
it’s A=pi R squared
lolll it’s fine
The clients who get haircuts at Whitney's salon have a variety of hair colors. brown 1 blond 3 black 6 red 2 Considering this data, how many of the next 36 clients to get haircuts should you expect to have blond hair?
Thus, the total number of clients that got haircuts have blond hair is 9.
Define about the total outcome:A prospective outcome of an experimentation or trial is described to as an outcome in probability theory. Only one result will materialise on each trial of an experiment since each possible outcome is distinct and numerous results are mutually exclusive.
Given number of hair colours:
brown = 1blond = 3 black = 6 red = 2Total colours = 12
Probability = favourable event / total outcome
Probability(blond hair) = 3/12 = 1/4
Total customers = 36
Number of clients have blond hair = 1/4 *36 = 9
Thus, the total number of clients that got haircuts have blond hair is 9.
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2x + 3y = -18 Find the x and y intersect
Step-by-step explanation:
given -
2
x
−
3
y
=
18
The slope of the equation of the form
a
x
+
b
y
=
c
is -
m
=
−
a
b
=
−
2
−
3
=
2
3
To find the y-intercept put
x
=
0
2(0)−
3
y=
18
−
3
y
=
18
y
=
18
−
3
=
−
6
Slope
m
=
2
3
Y intercept
(
0
,
−
6
)
graph{2x-3y=18 [-6.58, 13.42, -7.28, 2.72]}
2x+3y = -18
First, I'm going to find the x-intercept.
2x+3(0)= -18
2x+0= -18
2x=-18
x=-9
Next, the y-intercept.
2(0)+3y= -18
3y= -18
y= -6
Hope this helps!
A prism 5 feet tall whose base is a right triangle with legs length 6 feet and 7 feet
Therefore, the surface area of the prism is 139 square feet.
What is area?Area is the measure of the size of a two-dimensional region or surface, typically measured in square units such as square inches or square meters. It is calculated by multiplying the length of a shape by its width or height, or by using specific formulas depending on the shape. The concept of area is important in various fields such as mathematics, geometry, physics, engineering, and more.
Here,
To calculate the surface area of the prism, we need to find the area of each face and add them up.
The prism has two congruent triangular faces and three rectangular faces. The area of each triangular face is 1/2(base x height), where the base is 6 feet and the height is 7 feet, so the area of each triangular face is:
1/2(6)(7) = 21 square feet
The rectangular faces have dimensions of 6 feet by 5 feet, 7 feet by 5 feet, and 7 feet by 6 feet. The areas of these faces are:
6 x 5 = 30 square feet
7 x 5 = 35 square feet
7 x 6 = 42 square feet
Adding up the areas of all five faces, we get:
2(21) + 30 + 35 + 42 = 139 square feet
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Complete question:
A prism 5 feet tall whose base is a right triangle with legs length 6 feet and 7 feet. Find the area of the combined figure.
In the 2021 football season, the Riverside Red Dragon's manager gathered the points scored by the team during the regular season games. The following data set shows the values collected by the manager.
{17, 0, 28, 17, 17, 20, 28, 11, 17, 22, 24, 33, 20, 31, 20, 3}
Which of the following stem-and-leaf plots correctly graphs the data set?
2021 Riverside Red Dragon Football Season Points
0 0 3
1 1 7 7 7 7
2 0 0 0 2 4 8 8
3 1 3
Key 1|1 = 11
2021 Riverside Red Dragon Football Season Points
0 0 3
1 1 7
2 0 2 4 8
3 1 3
Key 1|1 = 11
2021 Riverside Red Dragon Football Season Points
1 1 7
2 0 2 4 8
3 0 1 3
Key 1|1 = 11
2021 Riverside Red Dragon Football Season Points
1 1 7 7 7 7
2 0 0 0 2 4 8 8
3 0 1 3
Key 1|1 = 11
2021 Riverside Red Dragon Football Season Points
0 0 3
1 1 7 7 7 7
2 0 0 0 2 4 8 8
3 1 3
Key 1|1 = 11
This stem-and-leaf plot correctly graphs the data set.
Sue's average for nine games of bowling is 108. What is the lowest score she can receive for the tenth game to have a mean of 110?
Answer:
128
Step-by-step explanation:
Sue's average for 9 games of bowling is 108. Therefore, the total scores for the 9 games is:
[tex]= 108 \times 9[/tex]
[tex]= 972[/tex]
To have an average of 110 in 10 games, her total score will be:
[tex]= 110 \times 10[/tex]
[tex]= 1100[/tex]
Therefore, the lowest score that she can get will be the difference between the values calculated above and this will be:
[tex]= 1100 - 972[/tex]
[tex]\bold{= 128}[/tex]
an architect needs to design a rectangular room with an area of 80 ft2. what dimensions should she use in order to minimize the perimeter? round to the nearest hundredth if necessary.
The minimum perimeter of a rectangle with an area of 80 ft2 is 56 ft. The dimensions of this rectangle would be 8 ft x 10 ft.
explanation: Let length be L and breadth be B of the rectangular room. A = L × B, given A = 80 ft² (Area of the room)The perimeter of the rectangle, P = 2(L + B) = 2L + 2BTo minimize P, we need to express one variable in terms of the other.
Let's consider L as the variable, and write B in terms of L from the given equation.=> B = (A/L)Therefore, P = 2L + 2B= 2L + 2(A/L) => P = 2(L² + 40/L)Differentiate P w.r.t L to find the critical point.= 2[(d/dL)(L²) + (d/dL)(40/L)]= 2(2L – 40/L²)For the critical point, dP/dL = 0=> 2L – 40/L² = 0=> L = ±2√10
Therefore, L = 2√10 (since L cannot be negative)Thus, B = (A/L) = 80/(2√10) = 4√10The dimensions of the room are 2√10 × 4√10 = 8.94ft × 35.76ft (rounded to the nearest hundredth).
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Given that angle B is in standard position, the terminal side is in quadrant III and sin B=-5/13, evaluate the following functions:
csc B = b) cot B = c) cos B = d) sec B = e) tan B =
Given that sin B = -5/13 and angle B is in quadrant III, we can use the Pythagorean identity to find the value of cos B:cos² B + sin² B = 1
cos² B + (-5/13)² = 1
cos² B = 1 - 25/169
cos² B = 144/169
cos B = -12/13 (since cos B is negative in quadrant III)a) To find csc B, we can use the reciprocal identity:
csc B = 1/sin B
csc B = 1/(-5/13)
csc B = -13/5b) To find cot B, we can use the quotient identity:
cot B = cos B/sin B
cot B = (-12/13)/(-5/13)
cot B = 12/5c) To find cos B, we have already calculated it above:
cos B = -12/13d) To find sec B, we can use the reciprocal identity:
sec B = 1/cos B
sec B = 1/(-12/13)
sec B = -13/12e) To find tan B, we can use the ratio identity:
tan B = sin B/cos B
tan B = (-5/13)/(-12/13)
tan B = 5/12Therefore, the values of the trigonometric functions for angle B in standard position with terminal side in quadrant III and sin B = -5/13 are:
a) csc B = -13/5
b) cot B = 12/5
c) cos B = -12/13
d) sec B = -13/12
e) tan B = 5/12
Step-by-step explanation:
Liam buys a laptop for R6 840 (including 15% VAT). Determine the price of the laptop
without VAT (excluding 15% VAT).
If Liam buys a laptop for Rs 840 (including 15% VAT) then the price of the laptop without VAT could be Rs 730.
Let the price of the laptop be 100 rupees.
After including 15% VAT, the price of the laptop would be 115 rupees.
The original price = (100 × 840)/115 = 730.
Hence the price of the laptop could be Rs 730.
This problem is the concept of discount and tax. In mathematics, the tax calculation is related to the selling price and income of taxpayers. It is a charge imposed by the government on the citizens for the collection of funds for public welfare and expenditure activities. There are two types of taxes: direct tax and indirect tax. In this lesson, we will study the tax computation when the selling price or price before tax is given. We calculate tax on a product by multiplying the tax rate with the product's net selling price.
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The size of a certain insect population is given by P(t) = 100e^.03t. where t is measured in days. a. How many insects were present initially? b. Give a differential equation satisfied by P(t). c. At what time will the population double?
d. At what time will the population equal 300?
We have that, The size of a given insect population is given by [tex]P(t) = 100e^{.03t}[/tex]. Where t is measured in days, we obtain the following:
a. Initially there were 100 insectsb. The differential equation satisfied by P(t) is: [tex]dP(t)/dt = 3e^{(.03t)}[/tex]c. The population will approximately double in t = 23.10 days.d. The population will equal 300 approximately in t = 36.32 days.a. To find the initial size of the insect population, we need to evaluate P(t) at t=0:
[tex]P(0) = 100e^(.03 * 0)P(0) = 100e^0\\P(0) = 100(1)\\P(0) = 100\\[/tex]
Therefore, initially there were 100 insects.
b. To find the differential equation satisfied by P(t), we need to find the derivative of P(t) with respect to time (t):
[tex]dP(t)/dt = d(100e^{(.03t))}/dt\\dP(t)/dt = 100(.03)e^{(.03t)}[/tex]
Then, the differential equation satisfied by P(t) is:
[tex]dP(t)/dt = 3e^{(.03t)}[/tex]
c. To find the time when the population doubles, we need to find t when P(t) = 200:
[tex]200 = 100e^{(.03t)}\\2 = e^{(.03t)}\\[/tex]
Now, take the natural logarithm (ln) of both sides:
[tex]ln(2) = ln(e^{(.03t)})\\ln(2) = .03t[/tex]
Solve for t:
[tex]t = ln(2)/.03 \approx 23.10.[/tex]
Therefore, the population will approximately double in t = 23.10 days.
d. To find the time when the population equals 300, we must solve for t at P(t) = 300:
[tex]300 = 100e^{(.03t)}\\3 = e^{(.03t)}[/tex]
Take the natural logarithm (ln) of both sides:
[tex]ln(3) = ln(e^{(.03t)})\\ln(3) = .03t[/tex]
Solve for t:
[tex]t = ln(3)/.03 \approx 36.32.[/tex]
Therefore, the population will equal approximately 300 at t = 36.32 days.
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30 points
8. RST - UVW find the values of x
9. What is the solution to the proportion
8. The value of x is 3.5
9; The solution from the proportion is x = 3
How to determine the valuesNote that from the diagram given, we have that;
ΔRST ≅ ΔUVW
Also, we can see that a side of the larger triangle ΔRST measures 4 and the smaller triangle ΔUVW measures 2.
We have a scale factor of 2
For the value of x, we have;
x = 7/2
Divide the values
x = 3.5
For the proportion
Given the equation as;
12/x = 4/2x - 5
cross multiply
12(2x - 5) = 4x
expand the bracket
24x - 60 = 4x
collect like terms
24x - 4x = 60
subtract the values
20x = 60
x = 3
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What is 5-6 because I am in the 10 grade and that is a vet hard question
Answer: -1
Step-by-step explanation
I NEED HELP ASAP!!! IT'S DUE TONIGHT!!
To find the lengths of the sides of the triangle with vertices at a(0, -4), b(0, -9), and c(-2, -5), we can use the distance formula:
Distance = √((x2 - x1)² + (y2 - y1)²)
Let's label the sides of the triangle as AB, BC, and CA, where A = (0, -4), B = (0, -9), and C = (-2, -5).
Length of AB:
AB = √((y2 - y1)² + (x2 - x1)²) (Note: We switched the order of x and y for this calculation to match the order of the points given)
= √((-9 - (-4))² + (0 - 0)²)
= √(5²)
= 5
Length of BC:
BC = √((y2 - y1)² + (x2 - x1)²)
= √((-5 - (-9))² + (-2 - 0)²)
= √(4² + 4²)
= √32
= 4√2
= 5.66
Length of CA:
CA = √((y2 - y1)² + (x2 - x1)²)
= √((-4 - (-5))² + (0 - (-2))²)
= √(1² + 2²)
= √5
= 2.24
Therefore, the lengths of the sides of the triangle areAB = 5
BC = 4√2 ≈ 5.66
CA = √5 ≈ 2.24
Since they are unequal, the triangle is a scalene triangle.
2)
To determine if AABC is a right-angled triangle, we need to check if any of its angles measure 90 degrees. We can use the slopes of the sides to determine this.
The slope of a line passing through two points (x1, y1) and (x2, y2) is given by:
slope = (y2 - y1) / (x2 - x1)
Using this formula, we can calculate the slopes of the three sides of AABC:
Slope of AB:
AB passes through the points A(0, -4) and B(0, -9).
slope_AB = (-9 - (-4)) / (0 - 0) = -5/0 (undefined)
Note that the slope of AB is undefined, since the line is vertical and has no defined slope.
Slope of BC:
BC passes through the points B(0, -9) and C(-2, -5).
slope_BC = (-5 - (-9)) / (-2 - 0) = 2
Slope of CA:
CA passes through the points C(-2, -5) and A(0, -4).
slope_CA = (-4 - (-5)) / (0 - (-2)) = 1/2
Since AB is vertical and has undefined slope, we cannot use its slope to determine the angle at A. However, we can use the slopes of BC and CA to check the other angles.
The angle at B is opposite the side BC, so we need to check if the slope of BC is the negative reciprocal of the slope of AB. Since AB has undefined slope, we cannot determine its reciprocal or negative reciprocal. Therefore, we cannot use this method to check if the angle at B is 90 degrees.
The angle at C is opposite the side CA, so we need to check if the slope of CA is the negative reciprocal of the slope of BC. If it is, then the angle at C is 90 degrees. Let's check:
slope_BC * slope_CA = 2 * 1/2 = 1
The negative reciprocal of slope_BC is -1/2.
Since slope_CA is not equal to the negative reciprocal of slope_BC, we can conclude that the angle at C is not 90 degrees.
Therefore, we CANNOT conclude that AABC is a right-angled triangle based on the slopes of its sides.
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Write the equation of the circle graphed below
Answer: It basically just Pi
Step-by-step explanation:
Pi equals 27/3 right, so you say pi = 27/3
That's basically it!
I am giving the first person to answer this brainliest! Who has the answers worksheet for these problems?
The dialatiοn pοint οf are:5) quadrilateral JKLM after a dilatiοn with a scale factοr οf 1/4 cantered at pοint K is J(7, 12), K(8, 12), L(7, 9), and M(4, 10).6) triangle XYZ after the dilatiοn is X'Y'Z', where X'(0, -3), Y'(-6, -9), and Z'(-12, 0).
What is the scale factοr?A scale factοr is defined as the ratiο between the scale οf a given οriginal οbject and a new οbject, which is its representatiοn but οf a different size (bigger οr smaller).
5).Tο find the cοοrdinates οf the image οf quadrilateral JKLM after a dilatiοn with a scale factοr οf 1/4 centered at pοint K, we need tο perfοrm the fοllοwing steps:
Find the cοοrdinates οf pοint K after dilatiοn.
Since the center οf dilatiοn is K, the image οf K will be itself.
Therefοre, the cοοrdinates οf the image οf pοint K will be (8, 12).
Find the cοοrdinates οf the images οf pοints J, L, and M after dilatiοn.
Tο find the image οf pοint J, we can use the fοrmula fοr dilatiοn:
(image οf J) = (center οf dilatiοn) + (scale factοr) x (vectοr frοm center tο J)
(image οf J) = (8, 12) + (1/4)(vectοr JO)(image οf J) = (8, 12) + (1/4)(-4, 0)
(image οf J) = (7, 12)Similarly, we can find the images οf pοints L and M:
(image οf L) = (8, 12) + (1/4)(vectοr ZK)(image οf L) = (8, 12) + (1/4)(-4, -12)
(image οf L) = (7, 9)(image οf M) = (8, 12) + (1/4)(vectοr KM)(image οf M) =
(8, 12) + (1/4)(-16, -8)(image οf M) = (4, 10)
Therefοre, the image οf quadrilateral JKLM after a dilatiοn with a scale factοr οf 1/4 centered at pοint K is J(7, 12), K(8, 12), L(7, 9), and M(4, 10).
6). Tο find the image οf triangle XYZ after a dilatiοn centered at the οrigin with a scale factοr οf k = -3/2, we need tο apply the dilatiοn fοrmula tο each vertex.
Fοr vertex X(0, 2):
x-cοοrdinate οf image = k * x-cοοrdinate οf X = -3/2 * 0 = 0y-cοοrdinate οf image = k * y-cοοrdinate οf X = -3/2 * 2 = -3
Sο the image οf vertex X is X'(0, -3).
Fοr vertex Y(4, 6):x-cοοrdinate οf image = k * x-cοοrdinate οf Y = -3/2 * 4 = -6y-cοοrdinate οf image = k * y-cοοrdinate οf Y = -3/2 * 6 = -9
Sο the image οf vertex Y is Y'(-6, -9).
Fοr vertex Z(8, 0):x-cοοrdinate οf image = k * x-cοοrdinate οf Z = -3/2 * 8 = -12y-cοοrdinate οf image = k * y-cοοrdinate οf Z = -3/2 * 0 = 0
Sο the image οf vertex Z is Z'(-12, 0).
Therefοre, the image οf triangle XYZ after the dilatiοn is X'Y'Z', where X'(0, -3), Y'(-6, -9), and Z'(-12, 0).
Hence, the dialatiοn pοint οf are:5) quadrilateral JKLM after a dilatiοn with a scale factοr οf 1/4 centered at pοint K is J(7, 12), K(8, 12), L(7, 9), and M(4, 10).6) triangle XYZ after the dilatiοn is X'Y'Z', where X'(0, -3), Y'(-6, -9), and Z'(-12, 0).
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PLSSSS HELP!!!! WILL GIVE BRANLIEST
two angles directly across from each other on intersecting lines Is called?
Calculate the area of a pie
that has a 7 inch diameter.
Answer:
12.25pi
Step-by-step explanation:
area of ciricle: pi* r^2
the radius can be found by divding the diameter in half so, 3.5
now square 3.5 and multiply with pi
so, 12.25pi
~lmk if you got Qs
Write a quadratic function h whose zeros are 2 and -7
Thus, the value of the quadratic function obtained using the zeros is found as: f(x) = [tex]x^{2}[/tex] + 5x - 14.
Explain about the quadratic function:f(x) = a[tex]x^{2}[/tex] + bx + c, for which a, b, and c are numbers and an is not equal to zero, is a quadratic function.
A parabola is the shape of a quadratic function's graph. Even though "width" or "steepness" of a parabola can vary as well as its path of opening, they all share the same fundamental "U" structure.
Given zeroes of the quadratic function is:
x1 = -7 and x2 = 2
Zeros in terms of factors are written as:
(x + 7) and (x - 2)
Let f(x) be the quadratic function:
f(x) = (x + 7)(x - 2)
On simplifying:
f(x) = [tex]x^{2}[/tex] + (7 -2)x - 7*2
f(x) = [tex]x^{2}[/tex] + 5x - 14
Thus, the value of the quadratic function obtained using the zeros is found as: f(x) = [tex]x^{2}[/tex] + 5x - 14.
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Follow the steps and match the order (this is not multiple choice question. Only use 3 steps)
12x-6=10
6x-3=5
6x=8
X=4/3
A. Add 3 to both sides
B. Divide both sides by 2
C. Subtract 3 from both sides
D. Multiply both sides by 1/6
E. Add 6 to both sides
I need help with my Geometry Homework.
Applying the property of the diagonals of a kite, the measure of angle F is calculated as: 71°.
What is the Property of the Diagonals of a Kite?The property of the diagonals of a kite is that they intersect at a right angle, while the shorter diagonal divides it into two isosceles triangles.
Thus, FH is a diagonal that divides the kite into two isosceles triangles, therefore:
m<EFH = 1/2(180 - 142)
m<EFH = 19°
m<GFH = 1/2(180 - 76)
m<GFH = 52°
m<F = m<EFH + m<GFH
m<F = 19 + 52
m<F = 71°
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Answer:
m∠F = 71°--------------------------
Property of kites:
Kites have a pair of congruent and pair of different angles.In the given kite we can see a pair of different angles, ∠G and ∠E.
It means the other two angles are congruent:
∠F ≅ ∠HWe know the sum of interior angles of a quadrilateral is 360°.
Find the missing angle measure:
m∠E + m∠F + m∠G + m∠H = 360142 + m∠F + 76 + m∠F = 3602* m∠F + 218 = 3602*m∠F = 142 m∠F = 71°What is the product of 3x – 4 and 5x^2–2x+6. Write your answer in standard form.
Part a: SHOW WORK
Part b: Is the product of 3x – 4 and 5x^2–2x+6 equal to the product of 4 – 3x and 5x^2 – 2x + 6? EXPLAIN.
50 points, please show work. Thanks.
a. The product of the expressions is 15[tex]x^{3}[/tex] - 26[tex]x^{2}[/tex] + 26x - 24.
b. No, the product of [3x - 4 and 5[tex]x^{2}[/tex] - 2x + 6] and [4 - 3x and 5[tex]x^{2}[/tex] - 2x + 6] is not same.
The solution has been obtained by using the arithmetic operations.
What are arithmetic operations?
All real numbers are thought to be sufficiently explained by the four basic operations, also referred to as "arithmetic operations." In mathematics, quotient, product, sum, and difference are the operations that come after division, multiplication, addition, and subtraction.
a. We are given two expressions as 3x - 4 and 5[tex]x^{2}[/tex] - 2x + 6.
Using the multiplication operation, we get the product as
⇒ (3x - 4) * (5[tex]x^{2}[/tex] - 2x + 6)
⇒ 15[tex]x^{3}[/tex] - 6[tex]x^{2}[/tex] + 18x - 20[tex]x^{2}[/tex] + 8x - 24
⇒ 15[tex]x^{3}[/tex] - 26[tex]x^{2}[/tex] + 26x - 24
b. The product of 4 - 3x and 5[tex]x^{2}[/tex] - 2x + 6 is as follows,
⇒ (4 - 3x) * (5[tex]x^{2}[/tex] - 2x + 6)
⇒ 20[tex]x^{2}[/tex] - 8x + 24 - 15[tex]x^{3}[/tex] + 6[tex]x^{2}[/tex] - 18x
⇒ 26[tex]x^{2}[/tex] - 15[tex]x^{3}[/tex] - 26x + 24
This is not same as the product of previous expressions.
Hence, the required solutions have been obtained.
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Keiko’s class collected coins to buy food for a local family. When Keiko counted the coins, there were 27 quarters, 92 dimes, 140 nickels, and 255 pennies. Her teacher offered to add an amount to the total, equal to what the students collected. What expression did he use to find out how much money they had?
The expression for the total amount of money collected in Keiko's class is 0.25 x 27 + 0.10 x 92 + 0.05 x 140 + 0.01 x 255
Expression to Find Total Amount of Money CollectedTo find out how much money Keiko’s class collected, the teacher needs to add up the value of each coin.
The value of a quarter is 25 cents, a dime is 10 cents, a nickel is 5 cents, and a penny is 1 cent.
In dollars, the expression to find the total amount of money collected can be written as follows:
0.25 x 27 + 0.10 x 92 + 0.05 x 140 + 0.01 x 255 = $25.50
Therefore, the total amount of money collected by Keiko’s class was $25.50
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PLEASE ANSWER! Select the expression that makes the equation true.
one half x (3 x 5 + 1) – 2 = ___
4 x (2 + 3)
(4 x 3) ÷ 2
6 ÷ 3 + 2
6 + 8 ÷ 4
The expression that will make the given equation true when simplified is: B. (4 x 3) ÷ 2
How to Determine the Expression that Makes the Equation True?To determine the expression that makes the equation true, simplify both sides of the equation and then compare them to the given options to identify the one that equals the simplified equation.
Let's simplify the left-hand side of the equation first:
1/2 * (3 * 5 + 1) - 2 = 1/2 * (15 + 1) - 2 = 1/2 * 16 - 2 = 8 - 2 = 6
Now we can check which expression equals 6:
4 * (2+3) = 4x5 = 20
(4x3) ÷ 2 = 12÷2 = 6
6 ÷ 3 + 2 = 2+2 = 4
6+8 ÷ 4 = 6 + 2 = 8
Therefore, the expression that makes the equation true is (4x3)÷2, which equals 6.
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Using Order of operations, the expression that makes the equation true is: (4 × 3) ÷ 2
How to use Order of operations?The order of operations has an acronym which is PEMDAS. This acronym stands for: parentheses, exponents, multiplication, division, addition, then subtraction.
We are given the equation as:
¹/₂ × (3 × 5 + 1) - 2
Using order of operations, we use multiplication inside the bracket first to get:
¹/₂ × (15 + 1) - 2
We solve the bracket to get:
¹/₂ × 16 - 2
We use multiplication to get:
8 - 2 = 6
Looking at the given options, the only that gives same answer as the above is option B as seen below:
(4 × 3) ÷ 2
= 12 ÷ 2
= 6
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public/activity/10005003/assessment
10.5.3 Quiz: Factoring and Graphing
Use the graph of the polynomial function to find the factored form of the
related polynomial. Assume it has no constant factor.
OA. x(x+3)
B. (x-3)(x+3)
C. x(x-3)
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In this case, the graph crosses the x-axis that is x intercept at x = -3 and x = 3,thus the answer is B. (x-3)(x+3).
What is intercept?Intercept is the point where a graph intersects with either the x-axis or y-axis. It is the value at which a line crosses the axis.
To determine the factored form of the related polynomial, we must first identify the zeroes of the function.
A zero is a point on the graph where the value of the function is equal to zero.
In the graph given, there are two zeroes, one at x=-3 and one at x=3.
The factored form of the polynomial can be expressed as (x-3)(x+3).
This is because the two zeroes of the function correspond to the two linear factors,
x-3 and x+3.
This matches the equation of the polynomial given in the graph, confirming that the correct factored form is (x-3)(x+3).
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!!Urgent Help Needed!!
The period of the function represented by the sinusoidal graph has a value of 0.7
Calculating the period of the functionGiven that we have the graph of the sinusoidal function
By definition, the period of the function is the distance between cycles
i.e. the length of a cycle
From the given graph, we have
Initial = 0
Final = 0.7
So, we have
Period = 0.7 - 0
Period = 0.7
This can also be calculated from the equation as
Period = 2π/B
From the function, we have
B = 3π
This means that
Period = 2π/3π
Evaluate
Period = 0.67
When approximated, we have
Period = 0.7
So, the period is 0.7 (approximately)
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what is not a method that can be used to solve a system of equations
Rate of change is not a method that can be used to solve a system of equations.
EquationsWhen solving a system of equations, it is important to use a valid method to find the solution. A system of equations is a set of two or more equations with multiple variables that must be solved simultaneously. There are different methods to solve a system of equations, but some methods are more effective than others.
Elimination (Linear Equations) is a method of solving a system of equations by adding or subtracting the equations to eliminate one of the variables. This allows the remaining variable to be solved easily. Substitution is another method where one variable is solved for in one equation and then substituted into another equation to solve for the other variable. Graphing involves plotting the equations on a graph and finding the intersection point(s) of the two lines. This is the solution(s) to the system of equations.
Rate of change, on the other hand, is not a method of solving a system of equations. It refers to the ratio of the change in one variable to the change in another variable. It is a concept used in calculus and differential equations, but it is not a valid method to find solutions to systems of equations. Therefore, when solving a system of equations, it is important to use a valid method to ensure accurate results.
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Variables x and y are connected by the relationship y = Ax" where A and n are constants. Given that A = e ^ 0.5 and n = 3/8 find the value of y when x = 11 .
When x = 11, the value of y is approximately 8.276. We are given that the relationship between x and y is given by [tex]y = Ax^n[/tex]where A and n are constants.
We are also given the values of A and n:
[tex]A = e^0.5[/tex]
n = 3/8
We can substitute these values into the equation to get:
[tex]y = e^0.5 x^(3/8)[/tex]
Now, we are asked to find the value of y when x = 11. To do this, we substitute x = 11 into the equation:
[tex]y = e^0.5 x^(3/8)[/tex]
[tex]y = e^0.5 (11)^(3/8)[/tex]
We can use a calculator to evaluate this
First, we evaluate the exponent (3/8) using the exponent rules:
[tex](11)^(3/8) = (11^(1/8))^3 = 1.706[/tex]
Next, we substitute this value back into the equation:
[tex]y = e^0.5 x^(3/8)[/tex]
[tex]y = e^0.5 (11)^(3/8)[/tex]
[tex]y = e^0.5 (1.706)[/tex]
Using a calculator, we can evaluate this expression to get:
y ≈ 8.276
Therefore, when x = 11, the value of y is approximately 8.276.
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