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Mila [183]
2 years ago
7

30=7r+5 what’s does r stand for

Mathematics
2 answers:
harkovskaia [24]2 years ago
7 0

Answer:

An unknown variable

Step-by-step explanation:

r is an unknown variable -> the equation is used to solve for it.

kodGreya [7K]2 years ago
3 0

Answer:

In math, r usually stands for radius.

Step-by-step explanation:

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Help please :) about to post more too
yKpoI14uk [10]

Answer:

Lets say test tubes = t, and beakers = b

1 pack of (t) is $4 less than 1 pack of (b)

Since i have no prior information we are going to use variables for this equation:

1t (1 pack of test tubes) is $4 less than 1b (1 set of beakers)

so to quantify the equation, we have 8t and 12b.

if b is a number that IS quantifiable such as $5 we can easily figure out this answer.

Lets use and example that 1 set of beakers is $8, if we multiply $8 by 12 (the number of sets of beakers), we get: 96

Using the same example, if 1t is $4 less than 1b than 1t = $4. So, if we multiply $4 by 8 (the amount of packs of test tubes), we get: 32

If you take both of those numbers: 96, and 32 and you divide them you get 3. so that means that 1t = 3b

Answer = 1t = 3b

This may not be correct due to the little information that i got however i hope that, that works out for you :)

5 0
3 years ago
Solve the system by the elimination method.
REY [17]

Answer: C is correct, 4x=8

Step-by-step explanation:

You will add the two equations...

4x-8=0

Now you need to move the -8 over, which reverses its sign to positive.

4x=8

8 0
2 years ago
Does someone know how to find the area of this?
defon

Answer:

Lenthg times width

Step-by-step explanation:

8 0
2 years ago
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How many digits are in the repeating pattern of the repeating decimal 1.666666…?
Marysya12 [62]

Answer: b865e95e

Step-by-step explanation:

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3 years ago
Gil aunt cut his birthday cake into 32 equal pieces. eighteen pieces were eaten at his birthday party.what fraction of the cake
klasskru [66]
Started out with 32/32. They ate 18/32, 32-18=14; 14/32. To simplify, 7/16 was left.
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