Answer:
(i) log 1 base 2 = log_{2} 1 =1.30103
Step-by-step explanation:
pl z give me brainliest i don't have any
The table gives estimated annual salaries associated with two different careers. Career Estimated annual salary Cashier $17,380 Teacher $ 42,630 Based on the table, how much more money would a teacher earn than a cashier over a 20 year career?
O $25,250
O $347.600
505,000
852,600
Answer: $505,000
Step-by-step explanation:
The salary difference between a teacher and a cashier is:
$42,630 - $17,380 = $25,250
This means that a teacher earns $25,250 more per year than a cashier.
To find out how much more a teacher would earn over a 20-year career, we need to multiply the salary difference by the number of years:
$25,250 x 20 = $505,000
Therefore, a teacher would earn $505,000 more than a cashier over a 20-year career.
Find the scale factor of trapezoid QRSTif it’s dilated
Answer:
what trapezoid? please provide the trapezoid so I can help you
Solve for x also find the measures of the following arcs
The missing values in the figure is solved using Inscribed Angle Theorem to get
x = 7
arc KL = 92 degrees
arc KLJ = 225 degrees
How to find length of arcThe arc length KL is solved with the knowledge that sum of arc length in a circle is 360 degrees
135 + 133 + KL = 360
KL = 360 - 135 - 133
KL = 92
Solving for x
inscribed angle = 0.5 * intercepted arc
5x + 11 = 0.5 * 92
5x + 11 = 46
5x = 46 - 11
5x = 35
x = 7
Arc KLJ
= 92 + 133
= 225
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What is the area of the figure. Solve by decomposing the figure.
A number cube is tossed 60 times.
Outcome Frequency
1 12
2 13
3 11
4 6
5 10
6 8
Determine the experimental probability of landing on a number greater than 5.
8 over 60
16 over 60
18 over 60
52 over 60
The experimental probability of landing on a number greater than 5 is 8/60, which simplifies to 2/15.
What is experimental probability?Experimental probability is the probability of an event based on the results of an experiment or observation.
It is calculated by dividing the number of times the event occurs by the total number of trials or observations.
It is also called empirical probability or observed probability.
Experimental probability can be used to estimate the theoretical probability of an event, which is the probability of the event based on mathematical reasoning or modeling.
As the number of trials or observations increases, experimental probabilities tend to approach theoretical probabilities.
The experimental probability of landing on a number greater than 5 is the number of times a number greater than 5 (i.e., 6) is obtained divided by the total number of tosses.
From the table, we see that 6 is obtained 8 times out of 60 tosses.
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What is the radius of a cone with the diameter 4
Answer:
8
Step-by-step explanation:
Which expression is equivalent to (r Superscript negative 7 Baseline) Superscript 6?
r Superscript 42
StartFraction 1 Over r Superscript 42 Baseline EndFraction
Negative 7 r Superscript 6
StartFraction 1 Over r EndFraction
The correct option is [tex]r^{-42}[/tex] is not equivalent to [tex](r^{-7} )^{6}[/tex] .
Algebraic expression: what is it?
Variables, constants, and mathematical operations like addition, subtraction, multiplication, division, and exponentiation can all be found in an algebraic statement. In many branches of mathematics, science, engineering, and finance, issues are represented and solved using algebraic expressions.
The expression [tex](r^{-7} )^{6}[/tex] can be simplified using the rule of exponentiation which states that raising a power to another power involves multiplying the exponents. Applying this rule, we get:
[tex](r^{-7} )^{6}[/tex] = [tex]r^{-42}[/tex]
Therefore, the expression [tex](r^{-7} )^{6}[/tex] is equivalent to [tex]r^{-42}[/tex], which is the first option given.
Option 1: [tex]r^{-42}[/tex] is not equivalent to [tex](r^{-7} )^{6}[/tex] .
Option 2: 1/ [tex]r^{-42}[/tex] is also not equivalent to [tex](r^{-7} )^{6}[/tex] .
Option 4: [tex]r^{-1}[/tex] is also not equivalent to [tex](r^{-7} )^{6}[/tex] .
Therefore, the correct option is (a) [tex]r^{-42}[/tex].
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Answer:
A
Step-by-step explanation:
over the weekend,eleni ate 1/4 box of cereal,and feddie ate 3/8 of the same box.what portion of the box of cereal did they eat in all?over the weekend,eleni ate 1/4 box of cereal,and feddie ate 3/8 of the same box.what portion of the box of cereal did they eat in all?over the weekend,eleni ate 1/4 box of cereal,and feddie ate 3/8 of the same box.what portion of the box of cereal did they eat in all?over the weekend,eleni ate 1/4 box of cereal,and feddie ate 3/8 of the same box.what portion of the box of cereal did they eat in all?over the weekend,eleni ate 1/4 box of cereal,and feddie ate 3/8 of the same box.what portion of the box of cereal did they eat in all?over the weekend,eleni ate 1/4 box of cereal,and feddie ate 3/8 of the same box.what portion of the box of cereal did they eat in all?
Answer: 5/8 as a fraction 0.625 as a decimal
Step-by-step explanation:
given the function below, find f(x) + g(x)
f(x)=x^2 + 6x -5
g(x)= -x^2-3x-1
Therefore , the solution of the given problem of function comes out to be 3x – 6 as a result.
What is function?The questions on the midterm exam will cover every topic, including created and actual places and also algebraic variable design. a diagram showing the relationships between different elements that cooperate to create the same result. A service is composed of numerous distinctive components that cooperate to create distinctive results for each input.
Here,
We can easily add the two functions to obtain f(x) + g(x):
=> F(x) = (x² + 6x - 5) + (-x² - 3x - 1) + G(x)
By condensing similar words, we can say:
=> x² + 6x - 5 - x² - 3x - 1 = f(x) plus g(x).
=> (x² - x²) + (6x - 3x) + f(x) + g(x) (-5 - 1)
=> f(x) + g(x) = 3x - 6
=> F(x) + G(x) = 3x – 6 as a result.
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|||
9
C
Erica has $120. If sweatshirts cost $28.99, estimate the maximum number of
shirts she can buy by rounding the price to the nearest ten.
sweatshirts
If sweatshirts cost $28.99, and Erica has $120, the estimated maximum number of shirts she can buy is 4.
How is the number determined?The unit cost is approximated to $30 and used as the divisor of $120.
The divisor is one of the parts of a division operation, including the dividend and the quotient.
The total amount that Erica has = $120
The unit cost of sweatshirts =- $28.99 ≈ $30)
The estimated maximum number of shirts she can buy = 4 ($120 ÷ $30)
Thus, to estimate the maximum number of sweatshirts Erica can buy with her $120, the unit cost is approximated to $30 and used to divide the dividend.
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Martina solved the equation x+14=44
x
+
14
=
44
. Her work is shown.
What error did Martina make?
According to the solution we have come to find that, The correct value of x in the given equation is 30.
What is an equation?An equation is a mathematical statement that shows the equality between two expressions, usually containing variables and mathematical operations. In an equation, the expressions on both sides of the equals sign have the same value.
For example, the equation 2x + 5 = 11 is an equation that shows the equality between the expressions 2x + 5 and 11. To solve the equation, we need to find the value of the variable x that makes the equation true.
Martina solved the equation x + 14 = 44 as follows:
x + 14 = 44
x = 44 - 14
x = 30
The error that Martina made is that she forgot to subtract 14 from both sides of the equation. The correct solution should be:
x + 14 = 44
x = 44 - 14
x = 30
Therefore, the correct value of x in the given equation is 30.
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x 0 1 4 5 6 6 7 8 9 10
Y 1 3 7 6 8 9 9 10 11 12
3. Create a scatterplot
Note: You can draw the scatterplot using the Word tools, or you can draw the scatterplot
by hand, then photograph or scan your graph to submit it.
4. After creating the scatterplot:
Divide the data into three regions.
Find the median points in the left-hand and right-hand regions, and
Draw the best-fit line on the scatterplot.
The equation of the line of the best fit is ŷ = 1.05x + 1.70
Creating the scatter plot of the pointsFrom the question, we have the following parameters that can be used in our computation:
x 0 1 4 5 6 6 7 8 9 10
Y 1 3 7 6 8 9 9 10 11 12
Using a graphing tool we have the attached graph as the scatter plot and the line of best fit
From the attached graph, the equation of the best fit is
ŷ = 1.05x + 1.70
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A group of people were asked which of three ice cream flavors they prefer. The results are shown in the table.
Ages Vanilla Strawberry Chocolate
20 years and younger 8 10 6
Over 20 years 8 6 12
What is the probability of a person being 20 years or younger and preferring strawberry ice cream?
6%
12%
18%
20%
The probability of a person being 20 years or younger and preferring strawberry ice cream is: 10 / 50 = 0.2 or 20%, So the answer is 20%.
The total number of people surveyed is?8 + 10 + 6 + 8 + 6 + 12 = 50
The number of people who are 20 years or younger and prefer strawberry ice cream is 10.
Therefore, the probability of a person being 20 years or younger and preferring strawberry ice cream is:
10 / 50 = 0.2 or 20%
So the answer is 20%.
What is the most preferred ice cream flavor among people over 20 years old?Among people over 20 years old, chocolate ice cream is the most preferred flavor with a total of 12 votes.
What is the total number of people who prefer vanilla ice cream?The total number of people who prefer vanilla ice cream is 16 (8 in the 20 years and younger group + 8 in the over 20 years group).
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Using everyday knowledge, which of the following statements is an if-then statement whose reverse is not correct?
If I eat too much, then I will get sick." The reverse of this statement would be "If I get sick, then I ate too much." However, this is not always true, as getting sick can have multiple causes and not just be Attributed to eating too much
An if-then statement is a type of logical statement that relates two propositions, where the second proposition is the consequence of the first. An example of an if-then statement is "If it rains, then the ground will be wet." The reverse of this statement would be "If the ground is wet, then it rained."
Using everyday knowledge, an example of an if-then statement whose reverse is not correct is "If I eat too much, then I will get sick." The reverse of this statement would be "If I get sick, then I ate too much." However, this is not always true, as getting sick can have multiple causes and not just be attributed to eating too much.
Another example could be "If I study hard, then I will pass the test." The reverse of this statement would be "If I pass the test, then I studied hard." This may not always be true, as there could be other factors that contributed to passing the test. Therefore, it is important to be mindful of the validity of if-then statements and their reverses.
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Question is in picture (Algebra 1 BTW)
Answer:
V = x³+ 2x² - 8x----------------------------------
Volume of a rectangular prism is the product of its three dimensions:
V = lwhSubstitute values of dimensions from the picture into formula:
V = x(x + 4)(x - 2) = x(x² + 2x - 8) = x³+ 2x² - 8x2.357 find the expanded notion.
Answer:
Expanded Form of 2.327:
2.327 = (2 * 100) + (3 * 1/101) + (2 * 1/102) + (7 * 1/103)
2.327 = (2 * 1) + (3 * 1/10) + (2 * 1/100) + (7 * 1/1,000)
2.327 = 2 + 3/10 + 2/100 + 7/1,000
2.327 = 2 + 0.3 + 0.02 + 0.007
helpPPPPPP ASAP!!!!!
Answer:
50
Step-by-step explanation:
P= 2l + 2w Formula for a perimeter
P= 184 given
l= 4x+2 given
w= 5x given
184= 2(4x+2) + 2(5x) substitution
184= 8x+4+ 10x distributive property
184= 18x+4 combine like terms
184 -4 =18x +4 -4 subtract 4 from both sides to get 18x alone
180=18x
180/18= 18x/18 divide both sides by 18 to get x alone
10= x
x=10
Side PS= 5x since it is parallel to RQ which is 5x
5(x)=5(10)=50
25 ≤ 1.05D – 32.7 ≤ 30
Which compound inequality represents the range for the skull size of Welsh Corgis? Answer choices are rounded to the nearest tenth.
The range for the skull size of Welsh Corgis is given by the compound inequality 54.8 ≤ D ≤ 59.7.
EquationsWe can solve the given inequality 25 ≤ 1.05D – 32.7 ≤ 30 for D by adding 32.7 to all three parts of the inequality:
25 + 32.7 ≤ 1.05D – 32.7 + 32.7 ≤ 30 + 32.7
57.7 ≤ 1.05D ≤ 62.7
Then, we can divide all three parts of the inequality by 1.05:
57.7/1.05 ≤ D ≤ 62.7/1.05
54.76 ≤ D ≤ 59.71
What are inequalities?Mathematical statements that compare two quantities are known as inequality. They represent the relationship between the quantities with symbols like, >,, and. An inequality may have one or more variables, and based on the values of those variables, the inequality may be true or false. The collection of all values for the variables necessary to make an inequality true is the answer to the inequality. In real-world applications, inequalities are frequently used to indicate limitations, limits, or ranges of values.
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Help me please
A car was valued at $44,000 in the year 1992. The value depreciated to $15,000 by the year 2006.
A) What was the annual rate of change between 1992 and 2006?
r=---------------Round the rate of decrease to 4 decimal places.
B) What is the correct answer to part A written in percentage form?
r=---------------%
C) Assume that the car value continues to drop by the same percentage. What will the value be in the year 2009 ?
value = $ -----------------Round to the nearest 50 dollars.
(A) the annual rate of change between 1992 and 2006 was 0.0804
(B) r = 0.0804 * 100% = 8.04%
(C) value in 2009 = $11,650
What is the rate of change?
The rate of change is a mathematical concept that measures how much one quantity changes with respect to a change in another quantity. It is the ratio of the change in the output value of a function to the change in the input value of the function. It describes how fast or slow a variable is changing over time or distance.
A) The initial value is $44,000 and the final value is $15,000. The time elapsed is 2006 - 1992 = 14 years.
Using the formula for an annual rate of change (r):
final value = initial value * [tex](1 - r)^t[/tex]
where t is the number of years and r is the annual rate of change expressed as a decimal.
Substituting the given values, we get:
$15,000 = $44,000 * (1 - r)¹⁴
Solving for r, we get:
r = 0.0804
So, the annual rate of change between 1992 and 2006 was 0.0804 or approximately 0.0804.
B) To express the rate of change in percentage form, we need to multiply by 100 and add a percent sign:
r = 0.0804 * 100% = 8.04%
C) Assuming the car value continues to drop by the same percentage, we can use the same formula as before to find the value in the year 2009. The time elapsed from 2006 to 2009 is 3 years.
Substituting the known values, we get:
value in 2009 = $15,000 * (1 - 0.0804)³
value in 2009 = $11,628.40
Rounding to the nearest $50, we get:
value in 2009 = $11,650
Hence, (A) the annual rate of change between 1992 and 2006 was 0.0804
(B) r = 0.0804 * 100% = 8.04%
(C) value in 2009 = $11,650
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Solve the equation.
7x +(4x - 5) = 3 + 2(x − 3)
-
X =
[?
Answer:
x = [tex]-\frac{2}{7}[/tex]
Step-by-step explanation:
Answer:
x = 2/9 ( or 0.2repeating)x = -2/7 ( or 0.285714 repeating)Step-by-step explanation:
there is an equation written in the question and one in the figure, to be sure I'll solve them both
Solve the equation.
7x +(4x - 5) = 3 + 2(x − 3)
7x + 4x - 5 = 3 + 2x - 6
7x + 4x - 2x = 3 - 6 + 5
9x = 2
x = 2/9 ( or 0.2repeating)
----------------------------------------------------------------------
7x + 1/2(4x - 5) = 3/2 + 2(x - 3)
7x + 2x - 5/2 = 3/2 + 2x - 6
7x - 5/2 = 3/2 - 6
14x - 5 = -9/2
14x = -9 + 5
14x = -4
x = -2/7 ( or 0.285714 repeating)
A rectangular piece of paper ABCD measuring 4 cm x 16 cm is folded along the line MN so that
vertex C coincides with vertex A, as shown in the picture. What is the area of the pentagon ABNMD' ?
Answer: First, we need to find the length of the line segment MN. Since MN is a fold line, it divides the rectangle into two congruent right triangles ABC and CDM. We can use the Pythagorean theorem to find the length of MN:
AC² + CM² = AM²
Since AC = 16 cm and CM = 2 cm (half the width of the rectangle), we have:
16² + 2² = AM²
256 + 4 = AM²
260 = AM²
AM = sqrt(260) = 2sqrt(65) cm
Since MN is the hypotenuse of right triangle ACM, we have:
MN = 2AM = 4sqrt(65) cm
Now, let's draw a line segment from B to MN, perpendicular to MN, and let the intersection point be E. Since triangle ABN is similar to triangle CDM, we have:
BN/DM = AB/CD
BN/2 = 4/16
BN = 1 cm
Since triangle BEN is a right triangle, we can use the Pythagorean theorem to find the length of BE:
BE² + EN² = BN²
BE² + (MN - DM)² = 1²
BE² + (4sqrt(65) - 2)² = 1
BE² + 64*5 - 16sqrt(65) + 4 = 1
BE² = -64*5 + 16sqrt(65) - 3
BE = sqrt(-64*5 + 16sqrt(65) - 3)
Note that BE is an imaginary number, which means that point E is actually below line segment MN. Therefore, the area of pentagon ABNMD' is zero.
Step-by-step explanation:
================================================
Explanation:
Grab some graph paper or use GeoGebra.
Place point A at the origin (0,0). Move 16 units to the right to plot B at (16,0).
Then move 4 units up to get to C(16,4). Then move 16 units left to arrive at D(0,4)
Here are the four points so far:
A = (0,0)B = (16,0)C = (16,4)D = (0,4)Next draw a line through A and C.
The equation of line AC is y = 0.25x; I'll skip the steps showing how I got that equation. But let me know if you need to see those steps.
The perpendicular bisector of segment AC is the equation y = -4x+34. Use the fact that the perpendicular line has a negative reciprocal slope. Meaning the slope 0.25 has the negative reciprocal -4. Also, use the center point (8,2) to help determine this perpendicular bisector equation.
Why is the perpendicular bisector so important? It's the mirror line. We'll reflect C over this line to land on A.
All points to the right of the mirror line will also reflect over to land somewhere to the left of the mirror. This will form the pentagon ABNMD where segment NM is the mirror line.
-----------
If we were to intersect the mirror line y = -4x+34 with the horizontal line y = 4, then we'll find the intersection point is (7.5,0) which is the location of point M in the diagram below.
Intersect y = 0 (aka the x axis) with y = -4x+34 to find the location of point N(8.5, 0)
So we should have
M = (7.5, 0)
N = (8.5, 0)
-----------
Pentagon ABNMD is composed of the following triangles
Triangle ADMTriangle MNATriangle ABNBut notice carefully that triangle NPQ has folded over mirror line MN to land exactly on top of triangle ABN. This means triangle ABN is congruent to triangle NPQ due to reflectional symmetry.
Also due to the symmetry of the fold, triangle ADM = triangle NPQ
Because of symmetry we have:
triangle ADM = triangle NPQtriangle NPQ = triangle ABNApply the transitive property to find triangle ADM = triangle ABN
-----------
area of triangle ADM = 0.5*base*height
area of triangle ADM = 0.5*MD*AD
area of triangle ADM = 0.5*7.5*4
area of triangle ADM = 15
Therefore, triangle ABN is also 15 square cm as well.
area of triangle MNA = 0.5*base*height
area of triangle MNA = 0.5*AN*4
area of triangle MNA = 0.5*8.5*4
area of triangle MNA = 17
-----------
Summary of the triangle areas:
area of triangle ADM = 15area of triangle MNA = 17area of triangle ABN = 15Therefore,
pentagon ABNMD = (triangle ADM)+(triangle MNA)+(triangle ABN)
pentagon ABNMD = (15)+(17)+(15)
pentagon ABNMD = 47 square cm is the final answer.
The diagram is shown below. I used GeoGebra to make it. The diagram is to scale.
Notes:
P is the old location of point B (where it used to be before the paper folded)Q is the old location of point C (where it used to be before the paper folded)Please write equation for me as in y=mx+b thank you
Answer:
y = -50x + 500
Step-by-step explanation:
The equation is y = mx + b
m = the slope
b = y-intercept
Slope = rise/run or (y2 - y1) / (x2 - x1)
Pick 2 points (5,250) (7,150)
We see the y decrease by 100, and the x increase by 2, so the slope is
m = -100/2 = -50
Y-intercept is located at (0,500)
So, the equation is y = -50x + 500
Cory recently sold his qualified small business stock for $98,000 after holding it for ten years. His basis in the stock is $32,000. Applying the rules as if the stock were acquired in 2018 and assuming his marginal tax rate is 32 percent, how much tax will he owe on the sale?
Cory will owe $21,120 in taxes on the sale of his qualified small business stock.
What is tax liability?Tax liability can be defined as the total amount of taxes an individual, corporation, company, etc owes a tax authority or service at a given period of time.
To determine the tax liability on the sale of qualified small business stock, we need to apply the rules for the Section 1202 exclusion.
First, we need to determine if the stock meets the requirements for the Section 1202 exclusion. The stock must have been acquired directly from a domestic C corporation that meets the criteria for a qualified small business (QSB). The stock must also have been held for more than five years.
Assuming the stock meets these requirements, we can apply the following formula to determine the taxable gain:
Taxable gain = Sale price - Basis
In this case, the taxable gain is:
Taxable gain = $98,000 - $32,000 = $66,000
Next, we need to determine the amount of the gain that qualifies for the Section 1202 exclusion. The exclusion is equal to the greater of:
10 times the taxpayer's basis in the stock, or$10 million reduced by the amount of gain from any other QSB stock sales by the taxpayer in the past.In this case, the exclusion is based on the 10 times basis rule since the gain is less than $10 million and there are no prior QSB stock sales. Therefore, the exclusion is:
Exclusion = 10 x $32,000 = $320,000
Since the gain of $66,000 is less than the exclusion of $320,000, the entire gain qualifies for the Section 1202 exclusion.
Finally, we need to determine the tax liability on the remaining taxable income. The marginal tax rate of 32 percent will apply to the taxable gain of $66,000, resulting in a tax liability of:
Tax liability = Taxable gain x Marginal tax rate
Tax liability = $66,000 x 0.32 = $21,120
Therefore, Cory will owe $21,120 in taxes on the sale of his qualified small business stock.
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A net of a three-dimensional figure is shown.
4:ft
6 ft
5 ft
10 ft
SE
JAS
What is the surface area of the three-dimensional
figure?
Answer:
To find the surface area of the three-dimensional figure, we need to first determine the shape of the figure. From the given net, it appears to be a rectangular prism with dimensions of 6ft x 5ft x 10ft. The surface area of a rectangular prism can be calculated by adding up the areas of all six faces. The formula for the surface area of a rectangular prism is: Surface Area = 2lw + 2lh + 2wh where l is the length, w is the width, and h is the height of the rectangular prism. Using the given dimensions, we can plug them into the formula and get: Surface Area = 2(6 x 5) + 2(6 x 10) + 2(5 x 10) Surface Area = 60 + 120 + 100 Surface Area = 280 square feet
Triangle missing measure
Answer:
angle 3 is 127 and angle 4 is 31
Step-by-step explanation:
If you see the base of the triangle looks like an angle measurer of 180 degrees. so if 2 is 53 then subtract 180-53 to get 127. Once you have 3 just subtract 180 - 22 and 127 to get 31
:D
Find the inverse of a function
H(x)=2(x-3)^2+4
the function is symmetric about the vertical line [tex]x = 3[/tex] . This means that the inverse function should also be symmetric about this line. We choose the positive solution for y:This gives us the inverse of H(x). We can write it as[tex]H^(-1)(x) = 3 ± sqrt((x - 4) / 2)[/tex]
What is the inverse of a function?To find the inverse of a function, we need to switch the positions of x and y and solve for y.
[tex]Let y = H(x) = 2(x-3)^2+4.[/tex]
We can begin by subtracting 4 from both sides to get:
[tex]y - 4 = 2(x-3)^2[/tex]
Next, we can divide both sides by 2 to get:
[tex](y - 4) / 2 = (x-3)^2[/tex]
Taking the square root of both sides, we obtain:
[tex]±sqrt((y - 4) / 2) = x - 3[/tex]
Adding 3 to both sides gives:
[tex]x = 3 ± sqrt((y - 4) / 2)[/tex]
Therefore, This gives us the inverse of H(x). We can write it as:
[tex]H^(-1)(x) = 3 ± sqrt((x - 4) / 2)[/tex]
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How many solutions does this equation have?
-12g + 9 = 2q - 6-15q
no solution
one solution
or
infinitely many solutions
Answer:
One solution---------------------------
Given equation:
- 12q + 9 = 2q - 6 - 15qSolve it in below steps:
- 12q + 9 = 2q - 6 - 15q-12q + 9 = - 13q - 613q - 12q = - 6 - 9q = - 15This equation has one solution.
Find the area of the shaded segment of the circle.
The area of the shaded segment is m².
(Round to the nearest tenth as needed.)
***
9m
270°
The sector has a central angle of 270° and the radius is 9m. So, the area of the sector is:
A_sector = (270/360) * π * (9m)^2 = 57.15m²
To find the area of the triangle, we need to find the height of the triangle. We can use the Pythagorean theorem to find the height:
h = √[(9m)^2 - (4.5m)^2] = √(81m^2 - 20.25m^2) = √60.75m^2 = 7.8m
The base of the triangle is 4.5m (half of the diameter), so the area of the triangle is:
A_triangle = (1/2) * 4.5m * 7.8m = 17.55m²
Therefore, the area of the shaded segment is:
A_shaded segment = A_sector - A_triangle = 57.15m² - 17.55m² = 39.6m²
Rounded to the nearest tenth, the area of the shaded segment is 39.6m².
The Combined weight of 5 student back packs is 39.9 pounds. What is the approximate weight of 1 back pack?
According to the solving, the approximate weight of 1 backpack is 7.98 pounds.
What does weight typically mean?1 close to being exact. 2 loose; unrefined; rough. simply a roughly fitting fit. 3 very similar; nearly the same.
Why is weight measured in kilograms?We use the kilogram as a unit of weight in everyday life under the assumption that the gravitational field around the globe is fairly constant because there is no practical, straightforward way to quantify mass. Scales must, however, be adjusted locally to account for the minor gravitational field fluctuation in various locations.
According to the given information:To find the approximate weight of one backpack, we can divide the total weight of the 5 backpacks by the number of backpacks. So:
Approximate weight of 1 backpack = Total weight of 5 backpacks / 5
Approximate weight of 1 backpack = 39.9 pounds / 5
Approximate weight of 1 backpack = is 7.98 pounds
Therefore, the approximate weight of 1 backpack is 7.98 pounds.
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give the exact value of the expression
arccos ( cos pi/2)
The exact value of the inverse-trigonometric expression arccos( [tex]cos\frac{\pi }{2}[/tex] ) is found to be [tex]\frac{\pi }{2}[/tex].
What are inverse trigonometric functions?These are also called as arc functions. These trigonometric functions are inverse operations of given trigonometric functions. The cosine of the angle indicates the ratio of base of right triangle and hypotenuse of the same triangle and the inverse of the cosine is the ratio of base and hypotenuse will give the respective angle. Inverse functions can be used to unknown angles, angle of elevation or depression in any right triangle.
The given expression is arccos( [tex]cos\frac{\pi }{2}[/tex] )
we know that arc cosine or inverse cosine= [tex]cos^{-1}(-x)[/tex] = [tex]\pi - cos^{-1} - (x)[/tex]
also we know that cos(-x)=cosx
arccos( [tex]cos\frac{\pi }{2}[/tex] ) = arccos( [tex]-cos\frac{\pi }{2}[/tex] )
= [tex]\pi - cos^{-1} (cos \frac{\pi }{2})[/tex]
= [tex]\pi - \frac{\pi }{2}[/tex]
= [tex]\frac{\pi }{2}[/tex]
∴ The value of arccos( [tex]cos\frac{\pi }{2}[/tex] ) is [tex]\frac{\pi }{2}[/tex].
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