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Darina [25.2K]
4 years ago
7

What is the solution of 7k+2=4k-10? (anwser asap plz)

Mathematics
2 answers:
inysia [295]4 years ago
7 0

Answer:

3

Step-by-step explanation:

LuckyWell [14K]4 years ago
7 0

Answer:

k = -4

division property

Step-by-step explanation:

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James is 8 years old. Last year, his father was 4 times as old as he was. In how many years' time will their combined age be 51?
Snowcat [4.5K]

Last year He was 7 years old.

His father is 4 times the age 7 x 4 = 28

Last year his dad was 28, so this year he is 29.

Combined age this year = 29 + 8 = 37

51 - 37 = 14 years

14/ 2 people = 7 years

8 + 7 = 15

29 + 7 = 36

15 + 36 = 51

It will take 7 years.

7 0
3 years ago
I dont know the x of 30-2x=22
zloy xaker [14]

Answer:

4

Step-by-step explanation:

30-22=2x

8=2x

8/2=x

3 0
3 years ago
Read 2 more answers
A rectangle’s perimeter and it area have the same numerical value. The width of the rectangle is 3 units. What is the length is
Verdich [7]

Answer:

6

Step-by-step explanation:

3+3+6+6=18

3*6=18

5 0
3 years ago
What is 17,210,000,000 written in scientific notation? Enter your answer in the box.
Leni [432]
That's easy 172.1 times 10 with the exponent of 7
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6 0
3 years ago
If (a, –5) is a solution to the equation 3a = –2b – 7, what is a?
sukhopar [10]

Answer:

d)  1

Step-by-step explanation:

3a = –2b – 7

We have the point (a, -5) so b = -5

Substituting in

3a = -2(-5) -7

3a = 10-7

3a = 3

Divide each side by 3

3a/3 = 3/3

a =1

6 0
3 years ago
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