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2 years ago

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A delivery person uses a service elevator to bring boxes of books up to an office. The delivery person weighs 180 lb and each bo

x of books weighs 40 lb. The maximum capacity of the elevator is 690 lb. How many boxes of books can the delivery person bring up at one time?

1 answer:

s344n2d4d5 [400]2 years ago

3 0

It would be 12 boxes

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What does the measure of B Equal?

defon

You have two triangles, ADC and ABC.
Sides AD and AB are congruent.
Sides DC and BC are congruent.
Side AC is congruent to itself.
By SSS, triangles ADC and ABC are congruent.

Corresponding parts of congruent triangles are congruent.
That means that angles DAC and BAC are congruent.
Angles DCA and BCA are congruent.

Since m<DAC = 32, then m<BAC = 32
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Now you know the measures of two angles of triangle ABC.
The measures of the interior angles of a triangle add to 180.
You can find the measure of angle B.

m<BAC + m<B + m<BCA = 180

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