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3 years ago

8

Sabrina reads 15 pages per hour. She needs to finish a book with 120 pages. Which equation would you use to determine how many h

ours she needs to read?

1 answer:

frozen [14]3 years ago

8 0

Answer:

15x=120

Step-by-step explanation:

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Let f(x)=-2x-7 and g(x)=-4x+6 find (g o f )(-5)

Elza [17]

Easy

(g o f)(-5)=g(f(-5))

first evaluate f(-5), then input the result into g(x)

f(-5)=-2(-5)-7
f(-5)=10-7
f(-5)=3

g(3)=-4(3)+6
g(3)=-12+6
g(3)=-6

(g o f)(-5)=-6

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3 years ago

Four times the reciprocal of a number equal 2 times the reciprocal of 8

garik1379 [7]

Answer:

Step-by-step explanation:

Let the number be y & reciprocal simply means inverse of the number

4×1/y=2×1/8 solving for y

4/y=2/8; y = 16

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3 years ago

If there is an open circle on a number on a number line, is that number included in the inequality

natta225 [31]

The answer is NO open circle is not included in an inequality. The other person answered it incorrectly

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3 years ago

What is the scale factor?

erastova [34]

Answer:

4

Step-by-step explanation:

2 x 4 = 8

4 x 4 = 16

So SF = 4 (enlargement)

6 0

3 years ago

Read 2 more answers

Help me please !!!!!!!!!!!!!!

tensa zangetsu [6.8K]

Answer:

$\large\boxed{V=\dfrac{49\pi}{3}\ in^3}\approx51.29\ in^3}$

Step-by-step explanation:

The formula of a volume of a cone:

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

r - radius

H - height

We have

r = (7 : 2) in = 3.5 in

H = 4 in

Substitute:

$V=\dfrac{1}{3}\pi(3.5)^2(4)=\dfrac{1}{3}\pi(12.25)(4)=\dfrac{49\pi}{3}\ in^3$

$\pi\approx3.14\\\\V\approx\dfrac{(49)(3.14)}{3}\approx51.29\ in^3$

5 0

3 years ago