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Stella [2.4K]
3 years ago
7

What's 80÷7 I need this answer fast thank you it's for 65 points

Mathematics
2 answers:
klemol [59]3 years ago
6 0
In order to solve this, we must find out how many times 7 goes into 80. We can do this by either subtracting individual 7s from 80, or by adding 7s together until we cannot add another without going past 80.

For this answer, I will use the addition method.

7 + 7 = 14

14 + 7 = 21

21 + 7 = 28

28 + 7 = 35

35 + 7 = 42

42 + 7 = 49

49 + 7 = 56

56 + 7 = 63

63 + 7 = 70

70 + 7 = 77

From 77, we cannot add another 7 to it without going over 80, since 77 + 7 = 84.

So, let's count the sevens that we have added up so far, and when we do, we can see that there are 11 of them, adding up to 77.
So 7 goes into 80 11 times. Now, let's find the remainder...

To find the remainder, you just need to subtract the final added number from the number you are dividing from.

80 - 77 = 3

80 / 7 = 11, remainder 3
Hope that helped! =)
Maru [420]3 years ago
6 0
80 divided by 7 equals<span> 11.4285714286</span>
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1. Convert to 0.04, and multiply by 365.

Since I don't want to give the answers, (Some of them I don't understand myself), follow this process for all of the others. For number 2, convert the first exponent equation, and then the second, and multiply both. For number 3, do the same, and then find the average of the product.

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6 0
3 years ago
Write an equation of a line that passes through (-1,6) and has a slope of 4.
jeka94

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Step-by-step explanation:

Point: (-1,6)

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Now, plug it in!

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7 0
3 years ago
On average, Mercury is about 57 , 000 , 000 km from the sun, whereas Neptune is about 4.5 x 10^9 from the sun. What is the diffe
Svetlanka [38]

On average, Mercury is about 57,000 ,000 km from the sun, whereas Neptune is about 4.5 x 10^9 km from the sun. What is the difference between Mercury's and Neptune's distance from the sun?

<h3><em><u>Answer:</u></em></h3>

Difference between Mercury's and Neptune's distance from the sun is 4.443 \times 10^9 \text{ km }

<h3><em><u>Solution:</u></em></h3>

Given that,

Distance of mercury from sun = 57, 000, 000 km

Distance of Neptune from sun = 4.5 \times 10^9 \text{ km }

To find: Difference between Mercury's and Neptune's distance from the sun

<em><u>Let us convert distance of mercury from sun to scientific notation</u></em>

Scientific notation is used to represent a decimal number between 1 and 10 multiplied by ten, so you can write large numbers using less digits

<em><u>Steps to remember:</u></em>

Move the decimal point in your number until there is only one non-zero digit to the left of the decimal point. The resulting decimal number is a.

Count how many places you moved the decimal point. This number is b.

If you moved the decimal to the left b is positive.

If you moved the decimal to the right b is negative.

If you did not need to move the decimal b = 0.

Write your scientific notation number as a x 10^b

57, 000, 000 = 5.7 \times 10^7

Therefore,

Distance of mercury from sun = 5.7 \times 10^7 \text{ km }

<em><u>Calculating difference between Mercury's and Neptune's distance from the sun:</u></em>

difference = Distance of Neptune from sun - Distance of mercury from sun

\text{ difference } = (4.5 \times 10^9) - (5.7 \times 10^7)

Let us make both powers same

\text{ difference } = (4.5 \times 10^9) - (0.057 \times 10^9)

Taking 10 power 9 common we get,

\text{ difference } = 10^9(4.5-0.057)\\\\\text{ difference } = 10^9 \times (4.443)\\\\\text{ difference } = 4.443 \times 10^9

Thus difference between Mercury's and Neptune's distance from the sun is 4.443 \times 10^9 \text{ km }

3 0
4 years ago
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