Answer:
29.52
Step-by-step explanation:
A=9.4*3.14
multiply and get 29.516
round to the nearest hundredth.
29.52
Answer: 2.66 hours
Step-by-step explanation:
Shawana can paint a fence in 8hours which means in one hour she can paint 1/8 of a fence.
Kevin can paint the same fence in 4 hours, so in one hour he can paint 1/4 of the fence.
Together in 1 hour they can paint 1/8 + 1/4 = 3/8
Total hours for painting is 3/8 or 2.66 hours
F(15) = -15 + 7
f(15) = -8
Answer:
The price changed by 92.5 %
Step-by-step explanation:
The regular price of lawn mover = 200 dollars
The new selling price = 85 dollars
Change in selling price = 200 -85 dollars = 115 dollars
% change == 
The price changed by 92.5 %
2x + 4y = 38......multiply by -5
10x + 3y = 105
-----------------
-10x - 20y = - 190....result of multiplying by -5
10x + 3y = 105
----------------add
-17y = - 85
y = -85/-17
y = 5
2x + 4y = 38
2x + 4(5) = 38
2x + 20 = 38
2x = 38 - 20
2x = 18
x = 18/2
x = 9
solution is : (9,5)