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tiny-mole [99]
2 years ago
5

How to solve this problem 15 = 5x

Mathematics
1 answer:
Lostsunrise [7]2 years ago
4 0

Answer:

x = 3 (see below)

Step-by-step explanation:

To solve for x, you need to isolate the variable to one side of the equation. To do that, you need to use reverse operations. For example, the reverse operation of subtraction is addition.

In this case, we have:

15 = 5x

5x is the same thing as 5 (x) or 5 times x. This means the reverse operation is division. So, we need to divide both sides of the equation by 5:

15 = 5x

-----   ----

5       5

--------------

3 = x

x = 3

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mariarad [96]
Let,
digital cameras be "x"
video cameras be "y"
Now,
According to the question,
5x + 3y = $3,213..................................................equation (1)
y = 4x..................................................................equation (2)

Taking equation (1)
5x + 3y = $3,213
Substituting the value of "y" from equation (2), we get,
5x + 3(4x) = $3,213
5x + 12x = $3,213
17x = $3,213
x = $3,213 / 17
x = $189

Taking equation (2)
y = 4x
Substituting the value of "x", we get,
y = 4 ($189)
y = $756

Now,
John buys a digital and a video camera. So, it costs him ($189 + $756) = $945

7 0
3 years ago
Is rectangle EFGH the result of a dilation of rectangle ABCD with a center of dilation at the origin? Why or why not?
katrin [286]

Answer:

the answer is b bro

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Please answer all i need help Factor the expression using the GCF. 50x-60 Next one Factor the expression using the GCF. 16m+40 n
Anton [14]

Answer:

10(5x - 6).

8(2m + 5).

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Step-by-step explanation:

Given that

50x-60

16m+40

27-45c

The greatest common factor is a measure of the highest number present inside, or common to all the numbers that were listed. To take this one at a time, we have....

50x - 60. The highest number common to both of them is 10, and thus, we have

50x - 60 = 10(5x - 6), and this is the solved part.

16m + 40. The greatest number that's present inside both numbers is 8, and thus we have

16m + 40 = 8(2m + 5) and this is the solved part.

27 - 45c. The greatest common number is 9, and as a result, we have

27 - 45c = 9(3 - 5c), and this is the solution we were searching for

7 0
3 years ago
Solve the equation <img src="https://tex.z-dn.net/?f=%5Cfrac%7Bn%7D%7B10%7D%20%2B8%3D17" id="TexFormula1" title="\frac{n}{10} +8
jonny [76]
Its 90 because 90 divided by 10 simplifies down to 9, and 9+8=17
3 0
3 years ago
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Answer:

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Step-by-step explanation:

x=25

y=30

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total desks = 630

5 0
3 years ago
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