Answer:
x = 20
Step-by-step explanation:
7x° + (x + 20)° = 180° (linear pair)
Solve for x
7x + x + 20 = 180
Add like terms
8x + 20 = 180
8x + 20 - 20 = 180 - 20
8x = 160
8x/8 = 160/8
x = 20
The first step that should occur first is (3-9).
Answer:
6.25 inches
Step-by-step explanation:
3/4 inches = 0.75 inches
If 0.75 inches is the map's scale for 3 miles, then:
0.75 inches / 3 miles = 0.25 inches per 1 mile
Multiply 0.25 inches inches per mile * 25 miles:
0.25 * 25 = 6.25 inches
OR:
0.75/3 = x/25
Multiply 25 by both sides:
x = (0.75/3)*25
x = 6.25 inches
Answer:
x=126
x-30=96
Step-by-step explanation:
(x-30) +(x-30) + (x-30) + x + x =540
5x-90=540
5x=630
x=126
<span>Solve for x: −3|x + 7| = −12
</span><span>−3|x + 7| = −12
</span>
x= -3, -11
