7x=3y+45
4x+5y=19 what’s the answer and show work

x = 6 and y = -1

Step-by-step explanation:

It is given two equations,

7x = 3y + 45

⇒ 7x - 3y = 45    (1)

4x + 5y=19

⇒  4x + 5y = 19    (2)

To solve these equations

eq (1) * 4  ⇒   28x - 12y =180  (3)

eq (2) * 7 ⇒    28x + 35y = 133   (4)

eq(3) - eq(4) ⇒   0x - 47y = 47

y = -47/47 = -1

eq(1) ⇒ = 7x - 3*-1 = 45

7x + 3 = 45

7x = 45 - 3 = 42

x = 42/7 = 6

Therefore x = 6 and y = -1

he spend 5.1 minutes chatting with his friends.

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5.1

the answer is the option b

the range is all real numbers

step-by-step explanation:

we know that

the absolute value parent function is equal to

see the attached figure to better understand the problem

so

a. it is v-shaped > is true

b. the range is all real numbers > is not true

because the range is the > [0,∞)

all real numbers greater than or equal to zero

c. it goes through the origin > is true

d. the domain is all real numbers > is true

step-by-step explanation: