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True [87]
3 years ago
13

I know number 13 is right, how do I do 11 and 12?

Mathematics
1 answer:
snow_tiger [21]3 years ago
8 0
11. 43 ; 137
12. 12 ; 102
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The diameter of a semicircle is 8 miles. What is the semicircle's perimeter? Use 3.14 for ​.
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41.13 cm

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How many times greater is<br> 3.8 x 105<br> than<br> 1.9 X 1022<br> 2<br> 20<br> 200<br> 2000
PilotLPTM [1.2K]

Step-by-step explanation:

there must be something wrong with your text.

what we can see is

3.8 × 105

and

1.9 × 1022

the true answer for these values has nothing to do with the 4 answer options.

maybe you meant

1.9 × 10.5 ?

because that answer would be 20.

but first working with the presented numbers :

3.8 × 105 = 399

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so, the second number is actually much bigger than the first number.

but if it is

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that works.

and we can either use the calculator to calculate

399 / 19.95 = 20

or we can simply look at the factor changes of the multiplication terms.

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105 = 10.5 × 10

so, the multiplication product of the two larger numbers is then 2×10=20 times larger than the product of the 2 smaller numbers.

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Three players each get one card from a randomly shuffeled deck. what is the chance
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3 years ago
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