Answer:
Amy worked for 128 hours while Brayden worked for 112 hours
Step-by-step explanation:
Given
Let A represents Amy and B represents Brayden
A = 16 + B ------(1)
A:B = 8:7------- (2)
Required
Find A and B;
Convert (2) to fractions

Cross Multiply


Substitute A = 16 + B in the above expression

Open Bracket


Subtract 7B from both sides



Recall that A = 16 + B
Hence, 

<em>This implies that Amy worked for 128 hours while Brayden worked for 112 hours</em>
Answer:
D
Step-by-step explanation:
Answer:
sum of area of All six faces of cube is it's total surface area
Step-by-step explanation:
surface area of a cube =6*area of faces =6*(side) square
3(a + b) the answer to the question
Answer:
steps below
Step-by-step explanation:
2 kinds of larger shapes can be make
kind 1: 18 x 4 x 3 = 216 cm
kind 2: 18 x (5+5+4) = 252 cm