3 years ago

Solve the system of equations using the substitution method. 2x+8y=4 x=−3y+5

1 answer:

7 0

Since x=-3y+5, substitute x for -3y+5.

2(-3y+5)+8y=4

Distribute.

-6y+10+8y= 4

2y+10= 4

Subtract 10 on both sides.

2y=-6

Divide by 2.

y=-3

Plug in y=-3.

x=-3(-3)+5
x= 9+5
x=14

(14,-3)

We can check this.

2(14)+8(-3)=4
28-24=4
4=4 <== this works

I hope this helps!
~kaikers

You might be interested in

Determine the net pay if gross pay was $546.54 and the following deductions were taken out. Federal tax $66.00, state tax

kirill115 [55]

Answer:

416.87, you subtract all from gross pay.

Step-by-step explanation:

546.54-66-21.86-33.89-7.92=416.87

3 0

2 years ago

F(x) =-6-3x/2. g(x)=2x+4

Advocard [28]

Answer:

correct

Step-by-step explanation:

my brain be smart

7 0

2 years ago

What is the equivalent of 243 to the power of (2/5)

nasty-shy [4]

<span>(243)^(2/5) = ?
---
The 5 in the denominator means "take the 5th root".
The 2 in the numerator means "square".

---

</span><span>Taking the 5th root first you get:
(243)^(2/5) = 3^2
Now squaring gives you
3^2 = 9

So the answer is 9.

Hope this helps :)
~Davinia.
</span>

6 0

2 years ago

Graph -7x+5y=35. khan acadmy forms of linear equations question. pls show work (10 points)

a_sh-v [17]

Answer:

Below

Step-by-step explanation:

● -7x + 5y = 35

Add 7x to both sides

● -7x +7x + 5y = 35+7x

● 5y = 7x + 35

Divide both sides by 5

● 5y/5 = (7x+35)/5

● y = 1.4x + 7

The graph of the function:

8 0

3 years ago

Read 2 more answers

Solve : x/3-2/5 = 2x/15-3/5

svetoff [14.1K]

Step-by-step explanation:

x/3-2/5=2x/15-3x

5x-6=2x-9

5x-2x=-9+6

3x=-3

3x/3=-3/3

x=-1

6 0

2 years ago