Inequality match up lab

2x + 3 < -3 =
-3x < -6 =
-5x < 5 =
5 - 2x < 11 =
x + 2 < 5 =
2 - 3x < 5 =
1 > x - 1 =
-1 < x =
2x < -2 =
8 < 4x =
15 < -5x =
1 - x> 4=
-9> x-6=

1. 2x+3<-3 = x<-3

You get this by subtracting 3 from both sides, which gives you -6. Then divide 2 from both sides.

2. -3x<-6 = x>2

You divide -3 from both sides. You must switch the sign because any time you multiply or divide a negative integer from both sides of an inequality the sign is switched.

3. -5x<5 = x>1

See number 2

4. 5-2x<11 = x>-3

Subtract 5 from both sides to get -2x<6. Then, divide both sides by -2 and switch the sign.

5. x+2<5 = x<3

Subtract 2 from both sides

6. 2-3x<5 = x>-1

Subtract 2 from both sides to get -3x<3. Then, divide -3 from both sides and switch the sign.

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

~

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.