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3 years ago

What is the value of the expression below if h = 9? 4h – (h + 15)

Mathematics

2 answers:

ira [324]3 years ago

8 0

Answer:

Hey

Step-by-step explanation:

Your answer is 12

Evaluate for h=9

(4)(9)−(9+15)

lianna [129]3 years ago

4 0

Answer: 3h−15

Step-by-step explanation:

Distribute the Negative Sign:

=4h+−1(h+15)

=4h+−1h+(−1)(15)

=4h+−h+−15

Combine Like Terms:

=4h+−h+−15

=(4h+−h)+(−15)

=3h+−15

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Step-by-step explanation:

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Step-by-step explanation:

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andrew11 [14]

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3 years ago

piper needs to buy 320 new ping-pong balls for the team ping pong balls come in 16 how many sets of ping-pong balls should piper

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Answer:

20 sets

Step-by-step explanation:

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3 years ago

Plot point C(2,7). If M is the midpoint of CD , what are the coordinates of D?

Y_Kistochka [10]

Answer:

The coordinates of D is (-4,-9)

Step-by-step explanation:

Given

C = (2,7)

M=(-1,-1) ----- Missing part of question

Required

Determine the coordinates of D

Let the coordinates of D be (x₂,y₂)

We'll solve this question using mid point formula;

$M(x,y) = (\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})$

Where

$C(x_1,y_1) = (2,7)$ and $M(x,y) = (-1,-1)$

Put these values in the formula

$(-1,-1) = (\frac{2+x_2}{2},\frac{7+y_2}{2})$

By comparison;

$-1 = \frac{2+x_2}{2}$ and $-1 = \frac{7+y_2}{2}$

$-1 = \frac{2+x_2}{2}$

Multiply both sides by 2

$-2 = 2 + x_2$

Subtract 2 from both sides

$-2 -2 = x_2$

$x_2 = -4$

$-1 = \frac{7+y_2}{2}$

Multiply both sides by 2

$-2 = 7 + y_2$

Subtract 7 from both sides

$-2 - 7 = y_2$

$y_2 = -9$

Hence, the coordinates of D is (-4,-9)

4 0

3 years ago