140 divided by 14 is 10. So x is 10. And Y is 140. 140 divided by y (1) =140
Answer:
225 m²
Step-by-step explanation:
If W is the width of the rectangle, and L is the length, then:
60 = 2W + 2L
A = WL
Use the first equation to solve for one of the variables:
30 = W + L
L = 30 − W
Substitute into the second equation:
A = W (30 − W)
A = 30W − W²
This is a parabola, so we can find the vertex using the formula x = -b/(2a).
W = -30 / (2 × -1)
W = 15
Or, we can use calculus:
dA/dW = 30 − 2W
0 = 30 − 2W
W = 15
Solving for L:
L = 30 − W
L = 15
So the maximum area is:
A = WL
A = (15)(15)
A = 225
30% of the 30 marbles is nine and 9-30 = 21 so your answer is 21
1 times something is the same number
so
make bottom 1
3/4 times 4/3=12/12=1 so
times wole thing by
result
=
=
=8
basically
a/b divided by c/d=a/b times d/c, invert and multiply
