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bija089 [108]
3 years ago
8

6r + 7 = 13 + 7r what is r

Mathematics
2 answers:
kumpel [21]3 years ago
6 0

Answer:

6r+7=13+7r

6r+7=7r+13

6r+7−7r=7r+13−7r

−r+7=13

−r+7−7=13−7

−r=6

\frac{-r}{-1} = \frac{6}{-1}

r=−6

Step-by-step explanation:

:) This is the answer

pochemuha3 years ago
6 0

Answer:

Solution

=

−

6

Step-by-step explanation:

6

+

7

=

1

3

+

7

6

+

7

=

7

+

1

3

2

Subtract

7

7

7

from both sides of the equation

3

Simplify

4

Subtract

7

7r

7r

from both sides of the equation

5

Simplify

6

Divide both sides of the equation by the same term

7

Simplify

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Twice a certain whole number subtracted from 3 times the square of the number leaves 133. Find the number
user100 [1]

Answer:

7

Step-by-step explanation:

"a certain whole number" is a number that we don't know, so pick a variable, let's use n

"Twice" means two times, so we'll use 2n for this.

"subtracted from" means the 2n will be AFTER the minus sign.

____ - 2n

What goes in front? "3 times the square of the number" 3n^2

Now we have 3n^2 - 2n

Lastly, we see the result is 133. So this gives us:

3n^2 - 2n = 133 To solve, subtract 133 from both sides of the equation.

3n^2 -2n - 133 = 0 Next FACTOR.

(3n + 19)(n - 7) = 0

3n+19=0 and n-7=0

n=-19/3 and n=7

Since we are looking for a whole number choose n=7

6 0
3 years ago
What is the answer to there are 56 students going to the game . The coach puts 7 students in each van. How many vans are needed
MAVERICK [17]

Answer:

56:7 = 8

Step-by-step explanation:

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7 0
3 years ago
Which fraction has a repeating decimal as its decimal expansion?
Kobotan [32]

Answer:

C

Step-by-step explanation:

a=0.15789474

b=0.1875

c=0.27272727

d=0.375

7 0
3 years ago
Read 2 more answers
Please help ASAP....
sesenic [268]

Answer:

C

Step-by-step explanation:

All the other answers are changing direction at some point so the sign of velocity is changing. The only one that is not changing is C, so C is correct.

8 0
3 years ago
Luis is going to receive $20,000 six years from now. soo lee is going to receive $20,000 nine years from now. which one of the f
Sindrei [870]
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