Question

Can somebody help me?
Matthew is 7 years older than twice the age of his sister. If Matthew is 13, how old is his sister?

A)3
B)4
C)10
D)33

Answer 1

im pretty sure it is d 33

Answer 2

The correct answer is A

Answer 3

@maddie82502 @amyga

Answer 4

Thank you.

Answer 5

medal please?

Answer 6

thank you

Answer 7

ok I get it @Fedorable

Answer 8

she's 3.
you would set it up so it looks like this:
13= 7 + (2x)--now that you have the equation, all you have to do is solve.
13= 7+ (2x)
-7= -7 -- in order to isolate the variable, you have to get rid of the constant using the subtraction property of equality, so in this case you'd subtract 7 from both sides.
6= (2x)-- you would be left with 6 equals 2x. you have to again isolate the variable by this time getting rid of the coefficient, you'd o so by doing the inverse operation which is in this case dividing by two on both sides.
6= (2x)
/2= /2
3=x

Answer 9

A

Answer 10

A

Answer 11

So what is 13 minus 7 and what is half of that? Can I have a medal please? (:

Answer 12

a