Answer:
Lenny purchased 45 bricks
Step-by-step explanation:
let's call the total amount of bricks x.
(equation) 10x + 20 = 470.
10x = 470-20
10x = 450
x = 45.
Lenny purchased 45 bricks.
Goodluck on your schoolwork/homework!
------------------------------------------------------------
sorry for any errors or bad explanations.
Answer:
2300
Step-by-step explanation:
25C3=(25×24×23)/(3×2×1)=2300
Answer:
Eight to the power of one? Or a polynomial.
Step-by-step explanation:
70). Answer Letter Choice, (C), 18 pi square units.
Area = pi r^2
D = 12
R = 6
Larger Circle: 36 pi
Find smaller circles, Subtract:
Diameter of larger circle is 12
Radius 6, also diameter of small circles (2)
pi r^2
D = 6
R = 3
pi = 9
2 circles
2 * 9 pi = Letter Choice, (C), 18 pi square inches
71). Answer Letter Choice, (B), 30.79 cm^2
72). Answer: 144
Hope that helps!!!! : )
Supplementary means that they add up to 180 degrees. Those 2 angles should add up to 180 degrees. X is the missing angle and 42 degrees is the other angle. If both are added together they equal 180. To find x we can simply subtract 42 from 180 to get the x. 138 is x. The proof is that if 138 and 42 are added together they end up making 180 degrees. Therefore, the answer is 138
