Answer:
B
Step-by-step explanation:
It just is
There are five boys to every three girls in an introductory chinese course. If there are 384 students enrolled in the course. how many are boys?
Which number should replace Z?
A 7
B 6
C 5
D 4
Answer:
2 sorry i don't know that's what answer i got
[tex]\sqrt{x} -36 = 0[/tex] X=?
Hey there!
I believe x might be 1296.
Look at the question closely, the square root of a number minus thirty-six equals zero.
The square root of 1296 would equal 36, so, 36 - 36 = 0.
Hope this helps!
Have a wonderful day!
5x²+4x+3=0 solve for x
Answer:
[tex]{ \underline{ \sf{x \: is \: \: \{ \frac{ - 5 + i \sqrt{35} }{10} \} } \: \: and \: \: \{ \frac{ - 5 - i \sqrt{35} }{10} \}} }[/tex]
Step-by-step explanation:
[tex]5 {x}^{2} + 4x + 3 = 0 [/tex]
from quadratic formular:
[tex]{ \sf{x = \frac{ - b± \sqrt{ {b}^{2} - 4ac } }{2a} }} [/tex]
general equation:
[tex] {ax}^{2} + bx + c = 0[/tex]
a is 5, b is 4 and c is 3:
substitute in formular:
[tex]{ \sf{x = \frac{ - 5± \sqrt{ {5}^{2} - (4 \times 5 \times 3) } }{(2 \times 5)} }} \\ \\ { \sf{x = \frac{ - 5± \sqrt{ - 35} }{10} }}[/tex]
but from complexes, i² = -1
[tex]{ \sf{x = \frac{ - 5± \sqrt{35 {i}^{2} } }{10} }} \\ \\ = { \sf{x = \frac{ - 5±i \sqrt{35} }{10} }}[/tex]
The bases of a prism are always
A. perpendicular
B. parallel
C. intersecting
D. rectangles
Answer:
D. rectangles
Step-by-step explanation:
Perpendicular is when they cross but the base isn't perpendicular
Parallel is when two lines never touch, but in the base of a prism there are lines that touch
Intersecting is when two or more lines meet and cross over each other
HELPPPP! PLEASEEEEE!
A mountain climber ascends a mountain to its peak. The peak is 10,740 ft above sea level. The climber then descends 400 ft to meet a fellow climber. Find the climber's elevation above sea level after meeting the other climber.
A. 10,740 ft above sea level.
B. 10.340 ft above sea level.
C. 11,140 ft above sea level.
D. 400 ft below sea level.
Answer:
10,340 ft
Step-by-step explanation:
the peak is 10,740 ft and since the climber is at the peak, that's their elevation.
he goes down 400 ft so its 10,470 - 400 which is 10,340
Answer:
B. 10,340
Step-by-step explanation:
The peak is 10,740, since they descend 400, it is subtraction. 10,740 - 400 is 10,340.
brainliest to correct answer, please hurry
Start at 3, subtract 5 and you get -2
Suzie determined the range of a quadratic function to be y ≤ –5. Choose the correct interval notation.
The range of equation is
interval :(-5, ∞)interval :[-5, ∞)interval: (-∞, -5)interval: (-∞, -5]What is interval?A interval is a set of real numbers that contains all real numbers lying between any two numbers of the set.
Given function : y ≤ –5
if, y > -5 then,
interval :(-5, ∞)
if y ≥ -5 then
interval :[-5, ∞)
if y < -5 then
interval: (-∞, -5)
if y ≤ -5 then
interval: (-∞, -5]
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The area of a children square playground is 50m squared.
a. what is the exact length of the playground
2. pine logs 3m long are to be laid around the playground. How many logs will need to be bought?
Answer:
a. solution
Area = 50 m^2
Area of square = l^2
or, 50 m^2 = l^2
or, √50m^2 = l
or, 5√2 m= l
Hence, The exact length of the playground is 5√2 m.
Here are two triangles identical in size.10 cm.The two triangles are overlapped 3 cm 6 cm.What is the area of the blue triangle showing?
Pls I will give Brainliest
Sorry if the picture is too dark :(
Answer:
51 cm²
Step-by-step explanation:
Let's ASSUME that the vertical measurements are taken perpendicular to the roughly horizontal baselines.
The three yellow triangles are all similar
the upper small triangle has height 3 and base 6 cm. The ratio of the lengths is 6/3 = 2
This means the medium (overlapping) triangle has lengths 10 - 3 = 7 and 7(2) = 14 cm
Area of the large triangle is ½(14 + 6)(10) = 100 cm²
Area of the overlapping yellow triangle is ½(7)(14) = 49 cm²
Exposed area of the blue triangle is 100 - 49 = 51 cm²
Both triangles have an area of 100 square centimeters and the area of the blue triangle showing is 51 square centimeters.
Based on the information given from statement, we can determine the missing length of the yellow triangle by means of simmilarity ratios, that is:
[tex]\frac{3\,cm}{6\,cm} = \frac{10\,cm}{x}[/tex] (1)
Where [tex]x[/tex] is the base of the yellow triangle, in centimeters.
Now we proceed to find the length base:
[tex]x = \frac{6\,cm}{3\,cm}\times 10\,cm[/tex]
[tex]x = 20\,cm[/tex]
The area of the triangle can be found by means of the following expression:
[tex]A = \frac{1}{2}\cdot b\cdot h[/tex] (2)
Where:
[tex]A[/tex] - Area of the yellow triangle, in square centimeters.[tex]b[/tex] - Base, in centimeters.[tex]h[/tex] - Height, in centimeters.If we know that [tex]b = 20\,cm[/tex] and [tex]h = 10\,cm[/tex], then the area of the triangle is:
[tex]A = \frac{1}{2}\cdot (20\,cm)\cdot (10\,cm)[/tex]
[tex]A = 100\,cm^{2}[/tex]
The area of the yellow triangle is 100 square centimeters and the area of the blue triangle is also 100 square centimeters due to congruency. The dimensions of the section of the yellow triangle overlapping the blue triangle are [tex]b = 14\,cm[/tex] and [tex]h = 7\,cm[/tex]. The area of this section is:
[tex]A' = \frac{1}{2}\cdot (14\,cm)\cdot (7\,cm)[/tex]
[tex]A' = 49\,cm^{2}[/tex]
And the area of the rest of the blue triangle is:
[tex]A'' = A - A'[/tex] (2)
[tex]A'' = 100\,cm^{2}-49\,cm^{2}[/tex]
[tex]A'' = 51\,cm^{2}[/tex]
In a nutshell, both triangles have an area of 100 square centimeters and the area of the blue triangle showing is 51 square centimeters.
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please help , ill give brainliest
3 laps 50 seconds 20% longer each lap
i need the answers for all three of those
Answer:
1) = -10
3) = 4
Step-by-step explanation:
Chow,...!
Find the measurement of angle ABC
There are five boys to every three girls in an introductory chinese course. if there are 384 students enrolled in the course, how many are boys?
Answer:
There are 240 boys.
Step-by-step explanation:
There are five boys to every three girls in an introductory Chinese course. Given that there are 384 students enrolled in total, we want to determine the amount of students which are boys.
Let b represent the number of boys and g girls.
Since the ratio is 5:3, we can write that:
[tex]\displaystyle \frac{5}{3} = \frac{b}{g}[/tex]
And since the total number of students is 384:
[tex]b + g = 384[/tex]
From the first equation, cross-multiply:
[tex]5g = 3b[/tex]
Solve for g:
[tex]\displaystyle g = \frac{3}{5} b[/tex]
Substitute:
[tex]\displaystyle b + \left (\frac{3}{5} b\right) = 384[/tex]
Simplify:
[tex]\displaystyle \frac{8}{5} b = 384[/tex]
Solve for b:
[tex]\displaystyle b = \frac{5}{8}\left(384\right) = 240[/tex]
In conclusion, 240 of the total students are boys.
can anyone plz with steps (not for useless man )
[tex]\boxed{\sf \displaystyle{\lim_{x\to a}}(x^n)=a^n}[/tex]
[tex]\\ \sf\longmapsto \displaystyle{\lim_{x\to \infty}}(\sqrt{3x}-\sqrt{x-5})[/tex]
[tex]\\ \sf\longmapsto \displaystyle{\lim_{x\to \infty}}\sqrt{3x}-\displaystyle{\lim_{x\to \infty}}\sqrt{x-5}[/tex]
[tex]\\ \sf\longmapsto \infty^{\dfrac{1}{2}}-\sqrt{\infty-5}[/tex]
[tex]\\ \sf\longmapsto \infty-\sqrt{\infty}[/tex]
[tex]\\ \sf\longmapsto\infty-\infty[/tex]
[tex]\\ \sf\longmapsto\infty[/tex]
What would be the slope for a line passing through the two points below?
Point 1: (1, 0.1) Point 2: (7, 26.8)
Answer:
slope is 28.7/6
Step-by-step explanation:
m= y2-y1/x2-x1
subtitute value in formula:
m=28.8-0.1/7-1
m=28.7/6
can you help me in all these questions
Imagine that you must cross the hallway staying an equal distance from each laser. Il you get closer to one laser than the other, it will blast you. Use a compass and straightedge to draw a safe path through the hallway.
Answer:
can you answer this first
The discussion is shown below:
what is data?In computing, data is information that has been translated into a form that is efficient for movement or processing.
A hall way with laser imagine that you must cross the hall way while staying at equal distance from each laser.
So, from the question we can consider the a point o which is in between laser 1 and laser 2.
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I need to find all real values of x from this inequality x^2>2x-2 and also this question x^2>2x+2. I need the answer fast with working out pls
[tex]x^2\gt2x-2[/tex]
[tex]x^2-2x+2\gt0[/tex]
You are essentially asking at this point where is the quadratic function greater than 0. To get the interval find the roots. Between the roots the function is guaranteed to be LESS THAN zero. Everywhere else the function is greater than 0.
[tex]x^2-2x+2=0[/tex]
Use Vieta's rule to get the roots,
[tex](x-1)(x-1)=0[/tex]
Both roots are the same so no value is less than 0 which means all values except at the point of root are strictly greater, the point of root is at [tex]x_{1,2}=1[/tex] which means the set for which the quadratic function is greater than 0 is [tex]\mathbb{R}-\{1\}[/tex] "all real numbers except 1".
To convert this into interval notation use all numbers up to 1 but not including and all numbers after 1 but not including,
[tex](-\infty,1)\cup(1,\infty)[/tex]
Hope this helps :)
find the value of x.
9514 1404 393
Answer:
x = 4
Step-by-step explanation:
The parallel lines cut the transversals proportionally, so we have ...
(10 -x)/x = 3/2
2(10 -x) = 3x . . . . . . . multiply by 2x
20 -2x = 3x . . . . . . . eliminate parentheses
20 = 5x . . . . . . . . . . add 2x
4 = x . . . . . . . . . . . . divide by 5
Find the sum
No links
⇛ -12 + 8
⇛ -4
[tex] \: [/tex]
Hey there!
The word “sum” simply means “to add” or “addition” in mathematical terms
So, we have to ADD -12 from 8 from each other.
Positives are on the RIGHT side of the number line whereas negatives are on the LEFT side of the number line
Start at -12 and go UP 8 spaces to the right.
-12 + 8
= -4
Answer: -4
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)
please answer these
I need it rn
it's due to tommorow
2 3/4m for textbooks + 1 1/2m for Notebooks
2 3/4 + 11/2
11/4 + 3/2
11/4 + 6/4
17/4
4 1/4
Subtract5 1/2 - 4 1/4
11/2 - 17/4
22/4 - 17/4
5/4
1 1/4
Complete answer1 1/4 meters of plastic cover will be left
HOPE THIS HELPS. GOODLUCK:)
Combine Like Terms
6. Which expression is equivalent to -2-(-15d)+(-11d)+2-6 ?
-4d+6
4d-6
4d+6
-26d-10
Answer:
4d - 6
Step-by-step explanation:
-2-(-15d)+(-11d)+2-6
-2 + 15d - 11d + 2 - 6
15d - 11d - 2 + 2 - 6
4d - 6
3)There are 9 colorful socks in a drawer: 3 green, 2
purple,
2 Navy, 1 yellow, and 1 pink. What's the
probability of picking a green putting it on and
then choosing a purple?
Answer:
1/24 chance
Step-by-step explanation:
To begin you would need to find the probability of picking a green sock which would be 3/9; and you could simplify this to 1/3.
After that you need to find the probability of picking a purple sock out of the 8 left, which would provide you with 1/8. To find the probability of both you would multiply 1/8 by 1/3 to find the combined probability which would leave you with 1/24.
3. A clock is constructed using a regular polygon with 60 sides. The
polygon rotates every minute. How much has the polygon rotated
after 12 minutes? Explain your answer with words, a drawing or both-
We are required to find how much the polygon has rotated after 12 minutes
The number of times the polygon has rotated after 12 minutes is 72°
Number of sides of the polygon = 60
The polygon rotates every minute, that is
1 rotation = 1 minutes
12 rotation = 12 minutes
one rotation of the clock is 360°
Number of times the polygon has rotated after 12 minutes = one rotation of the clock / Number of sides of the polygon × number of minutes
= 360°/60 × 12
= 6 × 12
= 72°
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prove that the following arguments are valid by using formal proof. 1, if studies medicine be will get a good job,if they gets a good job,he will get a good wage,he did not get good wage therefore,he did not study medicine.
The argument; if he did not get a good wage, then he must not have studied medicine is valid.
What is valid proof?Let P represent "He studies medicine"
Let Q represent "He gets a good job"
Let R represent "He gets a good wage"
The argument can be written as:
P → Q
Q → R
¬R
∴ ¬P (conclusion: he did not study medicine)
Assume for contradiction that the argument is invalid:
P → Q
Q → R
¬R
P (assumption for contradiction: he studied medicine)
Use modus ponens to derive Q from (5) and (1):
Q (from 1 and 5 using MP)
Use modus ponens again to derive R from (6) and (2):
R (from 2 and 6 using MP)
This contradicts ¬R in (3), so our assumption in (5) must be false. Therefore, we can conclude that the argument is valid:
¬P (from contradiction of assumption in (5))
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What is a rational number between 1/3 and 1/9?
Answer:
1/4
Step-by-step explanation:
its 0.25 which is rational. and its between the two.
For the second week of November, Eric White worked $41.75 hours. Eric earns $19 an hour. His employer pays overtime for all hours worked in excess of 40 hours per week and pays 1.5 times the hourly rate for overtime hours.
Calculate the following for the second week November (round your responses to the nearest cent if necessary):
2. If 3x - y = 4, what is the value of 27^x/3^y
9514 1404 393
Answer:
81
Step-by-step explanation:
Rewriting the expression as powers of 3, we get ...
[tex]\dfrac{27^x}{3^y}=\dfrac{(3^3)^x}{3^y}=3^{3x-y}=3^4=\boxed{81}[/tex]