3 years ago

Calculate (7y + 120) + (5y +168) = 180

Mathematics

1 answer:

saul85 [17]3 years ago

3 0

Answer:

y = -9

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

You might be interested in

Selamın aleyküm :'D djkdlslskdls

jekas [21]

The language of oh yea doesn't exist :)

5 0

3 years ago

Simplify the Square root of 72a6b3c2

Korolek [52]

The problem simplified is 36√ 2abc

5 0

3 years ago

If a quadrilateral has sides that measure 4 in and angles that all measure 90 we can consider the quadrilateral to be a??

svp [43]

You can consider it to be a square

5 0

3 years ago

Read 2 more answers

Mark's dad is three times older than Mark. Mark's sister is 2 years younger than Mark. (3m) The sum of their ages is 48. How old

nataly862011 [7]

Answer:

Age of Mark $=10$ years

Age of Mark's dad $=30$ years

Age of Mark's sister $=8$ years

Step-by-step explanation:

Let age of Mark be $x$ years.

Mark's dad is three times older than Mark

Age of her Mark's dad $=3x$

Mark's sister is 2 years younger than Mark

Age of Mark's sister $=(x-2)$ years

The sum of their ages is 48.

$x+3x+x-2=48\\5x-2=48\\5x=50\\x=10$

Age of Mark $=x=10$ years

Age of Mark's dad $=3x=3(10)=30$ years

Age of Mark's sister $=x-2=10-2=8$ years

8 0

3 years ago

If i got 68 correct on my math test and the total is 85 what is the score?

puteri [66]

To figure this out, you need to figure out what percentage 68 is of 85.

1. Divide 68 by 85 (Divide the % correct by the total number of questions)
2. 68/85 is .8, which is 80%

5 0

3 years ago

Read 2 more answers