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Anastaziya [24]

1 year ago

12

At a movie theater, the size of popcorn bags decreased 20%. If the old bags held 20 cups of popcorn, how much do the new bags ho

ld?

1 answer:

puteri [66]1 year ago

8 0

Answer:

16 cups

Step-by-step explanation:

removing 20 % leaves 80%

80% * 20 cups

.8 x 20 = 16 cups

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A is 14 total
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Expand and simplify 4(2x +7) – 3(x + 5)

Vikentia [17]

Answer:

$4\left(2x+7\right)-3\left(x+5\right)=5x+13$

Step-by-step explanation:

Given the expression

$4\left(2x+7\right)-3\left(x+5\right)$

<u>Expand and simplify the expression</u>

$4\left(2x+7\right)-3\left(x+5\right)$

Expand 4(2x + 7) = 8x + 28

$4\left(2x+7\right)-3\left(x+5\right)=8x+28-3\left(x+5\right)$

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$=8x+28-3x-15$

Group like terms

$=8x-3x+28-15$

Add similar elements: 8x - 3x = 5x

$=5x+28-15$

Simplify

$=5x+13$

Therefore, we conclude that:

$4\left(2x+7\right)-3\left(x+5\right)=5x+13$

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an earthquake measures 3.6 on the richter scale. what is the amount of energy (ergs) released by the earthquake? give an exact a

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We have that

<span>log10 E = 4.4 + 1.5<span>M
</span></span>E=<span>the released energy in Joules (J)
M= </span><span>earthquake measures---------- > 3.6
</span>log10 E = 4.4 + 1.5*3.6
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<span>
the answer is </span>6.309573444 x10^9 J<span>

</span>

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