Step-by-step explanation:
8²+x²=17²
74+ײ=289
x²=225
Sq root both sides
x=15
15×8=120 Sq ft
Usually when you do expressions involving subtraction you can do Keep, Change ,Change
That means you keep the sign of the first number and change the other two signs.
It is best you rewrite the expression to addition because a lot of people don't do well with subtracting .
Answer C
Step-by-step explanation:
To work out the estimate cost you need do 200 * 5=$1000
then I used a calculator and the actual answer is $895
-13 becomes +13. 0 stays 0. 13 + 0 is 13, which is your answer.
