$x + 2x + a + 90 \degree = 360\degree \\ x + 2x + 132\degree + 90 \degree = 360\degree \\ 3x + 222\degree = 360\degree \\ 3x = 360\degree - 222\degree \\ 3x = 138\degree \\ x = \frac{138\degree}{3} \\ \boxed{ x = 46\degree}$

7 0

2 years ago

You randomly select one card from a 52-card deck. Find the probability of selecting a black three or a red jack ) The probabilit

matrenka [14]

1/13

2 black 3s and 2 red Jacks, 4 cards out of 52.

8 0

3 years ago

F(x) = 2(x + 6), find x if f(x) = 22

Ksivusya [100]

F(x) = 2(x + 6) Plug in 22 for x
F(22) = 2(22 + 6) Use the Distributive Property
F(22) = 44 + 12 Add
F(22) = 56

7 0

2 years ago

Read 2 more answers

Nancy put new insulation in her attic and discovered that her heating bill for December decreased from $160 to $100. What is the

WINSTONCH [101]

Answer:

37.5% decrease

Step-by-step explanation:

To find a relative percentage you generally follow the rule of part divided by whole.

$100 / $160 = .625 (62.5%)

So $100 is 62.5% of $160

To find the decrease we need to subtract 62.5% from 100%

100 - 62.5 = 37.5

4 0

2 years ago