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Travka [436]
2 years ago
5

How do you write the sum of 7 times a number is equal to 9

Mathematics
1 answer:
77julia77 [94]2 years ago
6 0

answer:

7n = 9

work:

<em>note: i'm going to assume you didn't mean sum since sum is addition.</em>

let's analyze the question:

7 times a number

so, we have 7n

is equal to 9

so, 7n is equal to 9.

you can write this as: 7n = 9.

hope this helps, have a great day!

- Eviezoom <3

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There were 80 runners to start a race. In the first half of the race, 1/4 of them dropped out. In the second half of the race, 2
IgorLugansk [536]

Answer:

36 runners finished the race.

Step-by-step explanation:

In the first half of the race, 1/4 of them dropped, so we need to calculate 1/4 of 80:

(1/4) * 80 = 80/4 = 20

If 20 runners dropped out, now we have 80 - 20 = 60 runners.

Then, in the second half, 2/5 of the remaining runners dropped out, so:

(2/5) * 60 = 2*60/5 = 120/5 = 24

If 24 runners dropped out, now we have 60 - 24 = 36 runners.

So, 36 runners finished the race.

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2 years ago
How many times can you put 40÷746 in
prisoha [69]
Well 746÷40=18.65 so would that be 18?
7 0
3 years ago
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A cylinder has a radius of 4x + 2 and a height of 5x + 4. Which polynomial in standard form best describes the total volume of t
Olenka [21]
Area of the base = pi*(4x+2)^2 = pi*(16x^2 +16x +4)

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V = pi *(16x^2 +16x +4)(5x+4) = pi*(80x^3 +80x^2 +20x +64x^2 +64x +16) = 

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2 years ago
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What is the answer? Please answer correctly
Sloan [31]

Answer:

i think its 7t

Step-by-step explanation:

7 0
3 years ago
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Suppose f(x)=x^2+3 and g(x)=x-2 find (f-g)(x
SSSSS [86.1K]

Answer:

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Step-by-step explanation:

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3 years ago
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