Find each product mentally. 7 times 3.8

1 answer:

5 0

To do it mentally means to do it in your head

first do 7 * 3 = 21 in your head

than do 7 * 0.8 = 5.6 ( this might be hard to do in your head but you know 7*8 = 56 so add a decimal since it is 0.8 not 8 )

Add : 21 + 5.6 = 26.6

Final Answer : 26.6

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If are AC is 122 degrees and arc BC is 192 degrees, what is the measure of angle ACB

Gemiola [76]

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3 years ago

12x+7<-11 or 5x-8>40

DaniilM [7]

Answer:

Step-by-step explanation:

Given

12x + 7 < - 11 or 5x - 8 > 40

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5x - 8 > 40 ( add 8 to both sides )

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Step-by-step explanation:

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ella [17]

Answer:

167,886,383 basketballs

Step-by-step explanation:

We are asked to find how many basketballs would take to circle around the equator. We have given the earth's radius. So, we need the formula to obtain it's perimeter. Thus:

$Perimeter = Pi*diameter [m]\\Where Pi = 3.14$

Earth's diameter is simply radius*2. It means:

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On the other hand, we have a basketball crcumference; however, we need to obtain its diameter so that we can later calculate how many basketballs fit on earth's equator by simply dividing earth's circumference by a basketball's diameter.

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