Alvin’s age is three times elga’s age. the sum of their ages is 20. what is elga’s age?

answer:

elga's age is 5.

step-by-step explanation:

3x=y

x+y=20

x+3x=20

4x=20

x=20/4

x=5

3(5)=15

y=15

x=5, y=15

answer:

15

step-by-step explanation:

note that the absolute value always returns a positive value, that is

| a | = | - a | = a

given | - 2x - 5 | - | - 4 + 8 | with x = 7, then

| - 14 - 5 | - | - 4 + 8 |

= | - 19 | - | 4 |

= 19 - 4 = 15

answer:

y+1 = -5(x-2)

step-by-step explanation:

the point slope form of a line is given by

y-y1 = m(x-x1) where m is the slope and (x1, y1) is the point

y--1 = -5(x-2)

y+1 = -5(x-2)