Answer:
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Step-by-step explanation:
6(3x + 4) + 5(12-x) simplifies to
D) 13x + 84
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
Answer:
Hi! The correct answer is x= -7/2
Step-by-step explanation:
Solve the rational equation by combining expressions and isolating the variable x.
Answer:
Number above 42 : 14
Number beside 2 : 1
Number above 0: 12
Step-by-step explanation:
