Ten times two is equal to twenty.
X will equal 7.
4(5x-2)=2(9x+3)
20x-8=18x+6
20x-18x=8+6
2x=14
x=7
Step-by-step explanation:
25)
(x + 96) + (x + 96) = 180° (interior angles)
2x + 192 = 180°
2x = 180° - 192°
2x = - 12°
x = - 12°/2
x = - 6°
Therefore
x + 96 = - 6+96 = 90°
26)
(20x + 5) + (24 x - 1) = 180° (interior angles)
44x + 4 = 180°
44x = 180° - 4°
44x = 176°
x = 176°/44
x = 4°
Therefore
20x + 5 = 20*4+5 = 80+4 =84°
27)
6x = 5x + 10 (corresponding angles)
6x - 5x = 10
x = 10
Therefore
6x = 6* 10 = 60°
28)
(x + 109) + (x + 89) = 180° (interior angles)
2x + 198 = 180°
2x = 180° - 198°
2x = - 18°
x = - 18°/2
x = - 9°
Therefore
x + 89 = - 9+96 = 87°
Isolating variables mean to get the variable, or the letter all by itself by doing something to get rid of the number/numbers that are on the same side. That way you can solve for that missing variable.
7.1% subtract the final price by the original price to find the increase and then divide the increase by the original price.
Explanation:
Find the increase
3.75−3.50=.25
Then divide the increase by the original amount
.253.50=.0714285
To change to a percent multiply by 100 and round off to significant numbers
# .0714285 = 7. 14285% or 7.1% or just 7%
