Answer:
4 hours mowing lawns and 4 hours washing cars. 6 hours washing cars and 2 hours mowing lawns.
Step-by-step explanation:
Car washing gets paid more so it would only be fair if he worked more hours of washing cars than mowing lawns. Hope this helped you!!
Answer:
a = 3.75
Step-by-step explanation:
First distribute the -3 to (a - 6), which gives you the equation, 19a - 3a + 18 = 78. Then subtract the 3a from 19a, which gives you 16a + 18 = 78. Then subtract 18 from both sides and you get 16a = 60. Divide 60 by 16 and you get 3.75 as your a.
Answer:
identity property
Step-by-step explanation:
The sum of 0 and any number is that number is the identity property of addition
a+0=a
15+0=15
Answer:
43°
Step-by-step explanation:
complementary=90°
6x+1+7x-2=90°
6x+7x+1-2=90°
13x=90-1+2
13x=91
divide both sides with 13
x=7
6(7)+1
42+1
= A =43°
Answer:
a. Area = 1,017.36 cm²; Circumference = 113.04 cm
b. Area
c. Circumference
Step-by-step explanation:
Given:
Radius (r) = 18 cm
π = 3.14
a. Area of the mirror = area of circle = πr²
Plug in the values
Area = 3.14*18²
Area = 1,017.36 cm²
Circumference = 2πr
Circumference = 2*3.14*18
Circumference = 113.04 cm
b. The area of the glass would be used in finding the amount of glass needed caused it's the surface of the glass that is to be replaced.
c. The silver wire would be placed around the mirror, therefore, it is the circumference that would be needed in finding the amount of wire needed since the circumference is the perimeter round the mirror.