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3 years ago

Which set of values for x makes the inequality 12 - x < 7 true?

Mathematics

1 answer:

Mila [183]3 years ago

8 0

Answer:

D. 6, 7

Step-by-step explanation:

12 - x < 7

-x < -5

(whenever you multiply or divide an inequality by a negative you must switch the inequality symbol)

x > 5

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A game lasts 5/8 hours. Rachel played 4 of these games. For how long did she play in total? Write your answer in the simplest fo

ivanzaharov [21]

Answer:

5/2 or 2 1/2 hours

Step-by-step explanation:

Multiply 5/8 by 4, which is 20/8, then you simply from there so 5/2=2 1/2

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3 years ago

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Dmitry_Shevchenko [17]

Answer:

4x + 4y - 8

Step-by-step explanation:

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3 years ago

What is the area and perimeter for these two shapes?

Lubov Fominskaja [6]

A:
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3 years ago

Average rate of change for the function from 1 to 4.<br><br> H(x)=x^3-1

Roman55 [17]

Answer:

A. 21

Step-by-step explanation:

First, find h(1) and h(4) given the function, $h(x) = x^3 - 1$

$h(1) = (1)^3 - 1 = 1 - 1$

$h(1) = 0$

$h(4) = (4)^3 - 1$

$h(4) = 64 - 1$

$h(4) = 63$

Average rate of change = $\frac{h(b) - h(a)}{b - a}$

Where,

$a = 1, h(a) = 0$

$b = 4, h(b) = 63$

Average rate of change = $\frac{63 - 0}{4 - 1}$

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3 years ago

Answer each question and round your answer to the nearest whole number

soldier1979 [14.2K]

The new height is 20 in.

Explanation:

Let the width and height of the original triangle be w1 and h1
w1 = 5 in
h1 = 4 in

Let the width and height of the enlarged triangle be w2 and h2
w2 = 25 in
h2 = ?

(Since the triangles are similar, we can use the ratio of the given sides)

h2 / h1 = w2 / w1
h2 / 4 = 25 / 5
h2 / 4 = 5
h2 = 5 x 4
h2 = 20 in

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3 years ago