# 1) Find the value of two numbers if their sum is 12 and their difference is 4.

Numbers are 4 and 8

Step-by-step explanation:

Step 1:

Let the numbers be x and y. Given that their sum is 12 and difference is 4. Form equations for this data.

⇒ x + y = 12 ------ (1)

⇒ x - y = 4 -------- (2)

Subtract eq (2) from (1)

⇒ 2x = 8

⇒ x = 4

Step 2:

Find y.

⇒ y = 12 - x = 12 - 4 = 8

## Related Questions

Solve the equation below
3x—5(x+2)=-40

x = 15

Step-by-step explanation:

Step 1:  Distribute

3x - 5(x) - 5(2) = -40

3x - 5x - 10 = -40

Step 2:  Combine like terms

-2x - 10 = -40

Step 3:  Add 10 to both sides

-2x - 10 + 10 = -40 + 10

Step 4:  Divide both side by -2

-2x / -2 = -30 / -2

x = 15

If sales tax on a 16.00 DVD is \$1.32 find the sales tax on a \$120.00 DVD player

tax = \$1.32 / \$16.00 = 0.0825 = 8.25 %

tax ofr \$120.00 DVD = 0.0825 x \$120.00 = \$9.90
We know that,

A \$16.00 DVD player has a sales tax of \$1.32,

And \$120.00 divided by \$16.00 = \$7.50.

Since \$1.32 is the sales tax on a \$16.00 DVD,

We multiply \$1.32 by \$7.50, which is \$9.90.

So, the sales tax on a \$120.00 DVD player is \$9.90

Petra is asked to color 6/6 of her grid. she must use 3 colors; blue read and pink. there must be more blue sections than red sections or pink sections. what are the different way petra can color the sections of her grid and follow the rules

2 blues, 2 reads, 2 pinks
2blue, 1 red, 2 pink
2 red, 1 blue, 2 pink
2 blue, 1 pink, 2 red
hope this helps :D

If N = 34, what is 7 - N?