Helppppp plzzzzzzz!!!!!!!!!!!! 20+ Pts and brainliest!!!!!!

Mathematics

1 answer:

Alex Ar [27]3 years ago

6 0

Answer:

Y=3

Step-by-step explanation:

in the first to second step: -2(7-y)+4=-4 to -14-2y+4=-4, the part -2(7-y) should equal -14+2y instead of 14-2y because two negative signs add to be positive

so y should be 3

You might be interested in

Given the polynomial x7y³ + 2x5y² - 3x³ - 2x4 -2, its degree is equal to?

denis-greek [22]

Answer:

Step-by-step explanation:

its always the highest exponet

4 0

3 years ago

The Micro Devices Company earned 3,632,859,678 dollars this year. 2,459,632,852 dollars were earned last year. Which is the best

pav-90 [236]

Answer:

$1,173,226,826

Step-by-step explanation:

The estimate of the increase in dollars earnings is the difference between this year's earnings and last year's earnings. In other words, the increase in earnings is the excess of current year's earnings over last year's earnings as computed below:

increase in earnings=this year's earnings-last year's earnings

this year's earnings=$3,632,859,678

last year's earnings=$2,459,632,852

increase in earnings=$3,632,859,678-$2,459,632,852

increase in earnings=$ 1,173,226,826

8 0

3 years ago

Simplify 3x + 6x 2 - 5x - x 2. <br><br> 6x 2 + 2x 6x 2 - 2x 5x 2 - 2x 5x 2 + 2x

Firlakuza [10]

Answer:

$5x^2-2x$