Add numbers with the same amount of variables
-x^2 + (-7x^2) = -8x^2
– 28x (+ 14x )= -14x
7 (+ 8) = 15
-18x² - 14x + 15 is your answer
hope this helps
Answer:
Step-by-step explanation:
r = 12 cm
Theta = 62
Length of arc = 
= 12.98 cm
Answer:
Step-by-step explanation:
$120= the amount to pay for the shoe
$20 paid for the month
Balance to pay = $100
Then 3% interest rate on credit card = 3% of $100=$3
Therefore amount to pay = $3+$100=$103
I don’t know if that’s what you wanted but I hope I helped ;D (sorry for my bad english)
The mean of those sets of numbers are 17.5
