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3 years ago

14

Hannah wants to laminate the tabletop in her study room. The tabletop is the shape of an isosceles trapezoid shown here. If lami

nating costs $4 per square foot, what is the total cost to laminate the tabletop?
A) $16
B) $48
C) $64
D) $72

2 answers:

kondaur [170]3 years ago

5 0

Answer:

$16

Step-by-step explanation: I did the math in the comments.

ASHA 777 [7]3 years ago

5 0

The answer is 72 could you explain how you got 64?!

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You do not need to flip the inequality sign when solving the inequality -3 t + 7 ≥ 9.

NemiM [27]

For this case we must resolve the following inequality:

$-3t + 7 \geq9$

Subtracting 7 from both sides of the inequality we have:

$-3t \geq9-7\\-3t \geq2$

Dividing by 3 to both sides of the inequality we have:

$-t \geq \frac {2} {3}$

We multiply by -1 on both sides, taking into account that the sense of inequality changes:

$t \leq- \frac {2} {3}$

Thus, it is observed that to solve the inequality it is necessary to change the meaning of it.

ANswer:

False. It is necessary to change the sense of inequality

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