3 years ago

Spencer goes on a 5 hour work shift. After

Mathematics

1 answer:

romanna [79]3 years ago

5 0

Answer:

18/5 hours or 3 3/5 hours

Step-by-step explanation:

I assume the break is at 7/5 hours.

5 hours - 7/5 hours = 25/5 hours - 7/5 hours = 18/5 hours = 3 3/5 hours

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Jessica bought a $30 outfit for $17. What percent discount did she receive?

mihalych1998 [28]

<h2>Answer:</h2>

Around 57%

<h3><u>Step-by-step explanation:</u></h3>

17 / 30 = .56666666...

Move two decimal places to the left;

56.66666...

<em>Estimate:</em> 57%

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Answer:

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3 years ago

Mario is constructing a frame for a 10 in .by 8 in. photo. He wants the frame to be the same width all the way around and the to

alexgriva [62]

(10+2x)(8+2x) = 120
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Ludmilka [50]

Multiplying the number by 1,000

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3 years ago

The surface area of this triangular pyramid, whose base and lateral faces are congruent equilateral triangles, is __ square inch

DedPeter [7]

Answer:

The surface area is equal to $390\ in^{2}$

Step-by-step explanation:

The surface area of the triangular pyramid is equal to the area of its four triangular faces

In this problem

$SA=4[\frac{1}{2}(b)(h)]$

we have

$b=15\ in$

$h=13\ in$

substitute the values

$SA=4[\frac{1}{2}(15)(13)]=390\ in^{2}$

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