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son4ous [18]
3 years ago
7

I need help explaining

Mathematics
2 answers:
sukhopar [10]3 years ago
4 0

Answer:

Sure.

Step-by-step explanation:

So X is a variable meaning its a letter that represents a number. When there are a number and a variable (or a letter) like this 2x or 9y it means you are going to multiply the number by the variable. In this case it is 7 times x is equal to 21 so all we have to do is find what times 7 is equal to 21 and that number is 3. So if 7*x=21 is 7*3=21 then x=3. If you have any questions ill be more than open to answering them, hopefully this helped. Have a good day/night.

ser-zykov [4K]3 years ago
3 0
7x means 7 times a “mystery number” = 21
We can ask, “7 times what equals 21?”

The math family of equations here is
3 x 7 = 21
7 x 3 = 21
21 / 7 = 3
21 / 3 = 7

So to solve for x, or find out mystery number, we have 7x = 21
Whatever we do to one side of the equation, we have to do to the other side to keep it equal. Here, we’ll divide both sides by 7, so that on the left side, x is by itself.
Then we have x = 21/7 which is x = 3

Please ask any questions in the comments
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mihalych1998 [28]
In this situation, it is similar to a coin flip, so think about flipping a 2 sided chip, one side colored yellow the other blue, flipping the chip will result in a 50/50 chance for it to land on either side, so no matter how many times you flip it it will always be a 1/2 chance of it being on one of the sides
5 0
3 years ago
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pantera1 [17]

Answer:

<u>77</u> is the quotient of 1,078 and 14.

Step-by-step explanation:

quotient is the answer to a division problem.

numerator/denominator = quotient

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Have a nice day!

3 0
3 years ago
Tim install 50 square feet of his floor in 45 mins. At this rate how long does it take him to install 495 square feet. Is that 9
Nimfa-mama [501]

Answer:

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Step-by-step explanation:

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6 0
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irakobra [83]

Answer:

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Step-by-step explanation:

8 1/2 x 4/11

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7 0
2 years ago
Read 2 more answers
Can someone solve this with steps cause idk how to solve the radicals
IceJOKER [234]
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to see what you can take out of the radical, you can always do a quick "prime factoring" of the values, that way you can break it in factors to see who is what.
8 0
3 years ago
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