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Anna [14]
3 years ago
15

Allie noticed that to get her test grade, she could take Valerie's grade, multiply it by 2 and subtract 15. If Valerie's test gr

ade was x, how would you write Allie's test grade?
A) 2x
B) 2x + 15
C) 2x - 15
D) 15x - 2
Mathematics
2 answers:
sweet-ann [11.9K]3 years ago
7 0
It would be C. You would multiply X by 2 and then subtract 15.
Orlov [11]3 years ago
6 0

Answer: Option 'C' is correct.

Step-by-step explanation:

Since wee have given that

Let the grade of Valerie's test be x

First it multiply by 2

2\times x=2x

Then, it is subtracted by 15.

2x-15

Therefore, Allie's test grade can be written as

2x-15

Hence, Option 'C' is correct i.e. 2x-15

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Use order of operations to simplify
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X + 10 = 2x + 8
Annette [7]
Well the answer is x=2 but i’m not sure how to explain it
4 0
3 years ago
Read 2 more answers
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nata0808 [166]

Answer:

m = 5

a = -3

b = -15

Step-by-step explanation:

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4 0
2 years ago
What is the answer to this?
Trava [24]

Answer:

<h2>C. 97.6 in³</h2>

Step-by-step explanation:

The formula of a volume of a cylinder:

V=\pi r^2H

r - radius

H - height

We have

2r=4\ in\to r=2\ in\\\\H=8\ in

Substitute:

V_1=\pi(2^2)(8)=\pi(4)(8)=32\pi\ in^3

The formula of a volume of a cone:

V=\dfrac{1}{3}\pi r^2H

We have

r=2\ in\\\\H=0.7\ in

Substitute:

V_2=\dfrac{1}{3}\pi(2^2)(0.7)=\dfrac{1}{3}\pi(4)(0.7)=\dfrac{1}{3}\pi(2.8)=\dfrac{2.8\pi}{3}=\dfrac{28\pi}{30}=\dfrac{14\pi}{15}\ in^3

The volume of the plastic object:

V=V_1-V_2

V=32\pi-\dfrac{14\pi}{15}=\dfrac{480\pi}{15}-\dfrac{14\pi}{15}=\dfrac{466\pi}{15}\\\\\pi\approx3.141\\\\V\approx\dfrac{466}{15}\cdot3.141\approx97.6

7 0
2 years ago
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