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Tpy6a [65]
3 years ago
11

Ms. Johnson asked her class to write an equivalent

Mathematics
1 answer:
Anni [7]3 years ago
8 0
<span>Ahmad wrote the correct expression.
To prove that </span>7(2d + 3k - dk) - 7 is equal to 14d - 9 + 21k - 7dk + 2
Please check this solution:
7(2d + 3k - dk) - 7 = <span>14d - 9 + 21k - 7dk + 2
</span>7(2d + 3k - dk) - 7 = 14d + 21k - 7dk -9 + 2
7(2d + 3k - dk) - 7 = 14d + 21k - 7dk -7

Get the common variable which is 7.
7(2d + 3k - dk) - 7 = 7(2d + 3k - dk) - 7

For checking, we can simplify the equation...
from 7(2d + 3k - dk) - 7 = 14d - 9 + 21k - 7dk + 2
We simplify it to:
7(2d + 3k - dk) - 7 = 14d + 21k - 7dk -7
7 * 2d = 14d
7 * 3k = 21k
7 * - dk = -dk

Therefore, 
7(2d + 3k - dk) - 7 is equal to 14d + 21k - 7dk -7
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69+69+69+69+69+69+6?
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Answer:

420

Step-by-step explanation:

Simple addition! I double checked!

6 0
2 years ago
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Nady [450]

Answer:

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Step-by-step explanation:

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6 0
2 years ago
Heyo! I need some help, please. What is the x coordinate if (x, 17) is on a line that passes through the points (1, 2) and (-1,
expeople1 [14]

Answer:

  • x = 4

Step-by-step explanation:

<u>The line with points (1,2) and (-1,-8). Work out its equation.</u>

  • y = mx + b

<u>The slope is:</u>

  • m = (-8 - 2)/(-1 - 1) = -10/-2 = 5

<u>To find the y intercept, substitute x and y-xoordinates of point (1,2):</u>

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<u>The line is:</u>

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5 0
3 years ago
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PLS HELP Choose the solution to this inequality. 43&lt;−83y y &lt; −12 y &gt; 12 y &lt; 43 y &gt; 4
OlgaM077 [116]

Given:

The inequality is:

\dfrac{4}{3}

To find:

The solution of the given inequality.

Solution:

We have,

\dfrac{4}{3}

Multiply both sides by 3.

4

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It can be written as:

y

Therefore, the correct option is A.

8 0
2 years ago
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3 0
3 years ago
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