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zhannawk [14.2K]
3 years ago
7

What is the sum of 8.4*10^8 and 4.2*10^7 written in scientific notation?

Mathematics
1 answer:
anyanavicka [17]3 years ago
5 0
(8.4*10^8) + (4.2*10^7)

= 882,000,000
= 8.82*10^8

Hope it helped :)
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Answer:

The distance between the two stars in miles is 5.292 * 10^10 miles

Step-by-step explanation:

Here, we want to make a conversion from light year to miles

To make this conversion, we simply are going to multiply the light year by the miles

Mathematically, we have this as;

9 * 10^-3 * 5.88 * 10^12

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Which equations are correct? Select each correct answer.
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The hypotenuse of a right triangle has length 50 cm. One leg has length 20 cm. The nearest tenth, what is the length of the othe
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Answer:

45.8 cm

Step-by-step explanation:

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By pythagoras theorem,

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3 years ago
Solve the system of equations. <br> 3x-4y=8 <br> 18x-5y=10
ipn [44]

Answer:

y = -2    x = 0

Step-by-step explanation:

1. 3x-4y = 8

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Multiply equation 1 by 6

3. 18x-24y = 48

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4. -19y = 38

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Sub y = -2 back into equation 1

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7 0
3 years ago
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Naddika [18.5K]

Answer:

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The red shaded lines had numbers as well so I add all of them up.

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3 0
3 years ago
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