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2 years ago

What is the value of y so that the equation is true?

Mathematics

1 answer:

polet [3.4K]2 years ago

7 0

Answer:

I guess that You made a mistake and You wanted to solve equations $\sqrt[2]{y}$ . Then the answer is D because There is no number that gives a negative number after the square root

Step-by-step explanation:

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What is the midpoint of the segment shown below (-8,-7) (-7,-8)

svetlana [45]

Given two points (x₁,y₁) and (x₂,y₂) the midpoint would be:
M=((x₁+x₂)/2 , (y₁+y₂)/2)

In this case, the points would be: (-8,-7) and (-7,-8); therefore:
M=((-8-7)/2 , (-7-8)/2)=(-15/2,-15/2)

Answer: C.) (-15/2 , -15,2)

6 0

2 years ago

Hey guys can you answer this one question real quick

Umnica [9.8K]

Answer:

a. 1/5

b. (3, 3/5)

c. 1/5x = y

Step-by-step explanation:

Remember: (x, y)

0.5 = 1/2

(1/2, 1/10) = 1/10 ÷ 1/2 = 1/10 • 2 = 1/5, you can divide y/x = constant of proportionality. 1/10 ÷ 1/2.

1 2/5 = 7/5

(7, 7/5) = 7/5 ÷ 7 = 7/5 • 1/7 = 1/5, y/x = constant of proportionality. 7/5 ÷ 7.

a. 1/5 is the constant of proportionality
b. (3, 3/5) because 3/5 ÷ 3 or 3/5 • 1/3 = 1/5.
c. 1/5x = y

6 0

3 years ago

In the system -12c+3d=6 and -3c +6d=-9, which expression could you use for substitution

inessss [21]

You can not use either of them because neither of them have a variable= to the eqaution
ex.) y= 3x+25

3 0

2 years ago

Please answer number 4 I’ll give brainliest thanks!

bagirrra123 [75]

Answer:

1/8

Step-by-step explanation:

P(5) = 1/8

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6 0

2 years ago

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What is the volume of a cone that has a radius of 4 cm and a height of 9 cm?

vodka [1.7K]

For any sort of pyramid or cone, the volume is 1/3 of the volume of a prism with the same base and height. Since the volume of a prism/cylinder is $V=Bh$ , the volume of a pyramid/cone is $V=\frac{1}3Bh$ .

In this case, our base is a circle, which has a radius of 4 cm.
The area of a circle is $A=\pi r^2$ where r is the radius.
$A=\pi (4)^2=\pi (4\times4)=16\pi=B$

We now know that our base is 16π cm.
We also know that our height is 9 cm.
Let's plug these into our volume formula.

$V=\frac{1}3\times16\pi \times9$

Use 3.14 to approximate pi as the question states. 16 × 3.14 = 50.24.

$V\approx\frac{1}3\times50.24\times9$

We could punch all of that into our calculator to get the same answer, but since 1/3 of 9 is clearly 3, let's just go with that.

$V\approx3\times50.24$

$\boxed{V\approx150.72\ cm^3}$

8 0

2 years ago

Read 2 more answers