Answer:
You know that XZ is 15 and the whole perimeter of the triangle is 50. WZ is going to be the same length as WX due to the lines saying that they are equal.
Your first step is to take 50-15=35, we did this because we already know the length of one side and can take that off from the whole.
The next step is to divide 35 by 2, because both sides are going to be the same length.
35/2=17.5
You final answer would be 17.5
Hope this helps ;)
(x-5)(x+3) = 0
Apparently, the other solution is x = 5.
Answer: 
Step-by-step explanation:
f(x) = -3x² - 6x
<u>Requirements of the question</u>
Find the value of f(-9)
<u>Substitute values into the given function</u>
f(x) = -3x² - 6x
f(9) = -3 (-9)² - 6 (-9)
<u>Simplify the exponent</u>
f(9) = -3 (81) - 6 (-9)
<u>Simplify by multiplication</u>
f(-9) = (-243) - (-54)
<u>Simplify by subtraction</u>

Hope this helps!! :)
Please let me know if you have any questions
Answer:
20%
Step-by-step explanation:
% of error is given by the following formula:
% Error =
Now, Jessie estimated the weight of his cat to be 12 pounds i.e. Approximate value is 12 pounds.
Again, The actual weight of the cat is 15 pounds i.e. the exact value is 15 pounds.
Therefore, the % error =
% (Answer)