Question 4:
2x-3
Because we don’t know how much Fernando has that would be where we fill in the variable giving you 2x then 3 dollars less will give you the -3 therefore 2x-3
Question 5:
1/2x+7
Because we don’t know Deb’s age that would be the variable and we are looking for half of Deb’s age giving you 1/2x then the 7 years more giving you the +7 hence 1/2x+7
The standard formula of circle is x^2 +y^2 = r^2
hope this will help you getting the length of radius sure right easy
r = sqrt8 = 2sqrt2
hope this will help you
Answer:
'
Step-by-step explanation:
circumference = 2 x pi x r
56 = 2 x 3.14 x r
56 = 6.28 x r
r = 56/6.2
r = 8. 917
d = 8.917*2 = 17.8
diameter = 18 meters