Answer: option D
-5D means multiply all the elements of D by -5
i.e. -5 * -10 = 50
-5 * 10 = -50
-5 * -5 = 25
-5 * 15 = -75
So you can mark the other person as brainliest
Answer:
on the second equation, the answer for (4 - 17) should be -13, not just 13.
On the 3rd equation, she forgot to put x next to the 8.
correct answer is 1/2
Answer:
36 units
Step-by-step explanation:
From the diagram |UW|=|UV|+|VW|
We the expressions in terms of x to get:
![9x - 9 =( 2x - 4 )+ (4x + 10)](https://tex.z-dn.net/?f=9x%20-%209%20%3D%28%202x%20-%204%20%29%2B%20%284x%20%2B%2010%29)
We group the similar terms to get:
![9x - 2x - 4x = - 4 + 10 + 9](https://tex.z-dn.net/?f=9x%20-%202x%20-%204x%20%3D%20%20-%204%20%2B%2010%20%2B%209)
![3x = 15](https://tex.z-dn.net/?f=3x%20%3D%2015)
Divide both sides by 3
![\frac{3x}{3} = \frac{15}{3}](https://tex.z-dn.net/?f=%20%5Cfrac%7B3x%7D%7B3%7D%20%20%3D%20%20%5Cfrac%7B15%7D%7B3%7D%20)
![x = 5](https://tex.z-dn.net/?f=x%20%3D%205)
![\implies \: |UW| = 9(5) - 9 = 45 - 9 = 36](https://tex.z-dn.net/?f=%20%5Cimplies%20%5C%3A%20%20%7CUW%7C%20%20%3D%209%285%29%20-%209%20%3D%2045%20-%209%20%3D%2036)