Answer:
99
Step-by-step explanation:
110% × 90 = 99
<em>OR</em>
110/100 × 90 (Simplify this)
11/10 × 90 (Divide 10 into 90 / Cross multiply)
11 × 9 = 99
Answer:
131
Step-by-step explanation:
khan academy
The key to word problems like this is to turn them into an equation, then they are much simpler to solve.
The first angle is is double the second, so it will be 2x and the second angle will be x. The third angle is 19 more than double the measure of the first angle. that means its 4x +19.
Answer:
Step-by-step explanation:
R = 3x + 9y
They told us that R = 7, y = 6
So you can rewrite the equation as:
R = 3x + 9y
7 = 3x + 9(6)
7 = 3x + 54
Subtract 54 from both sides.
7 - 54 = 3x
-47 = 3x
To find x, you need to divide both sides by 3
3x = -47
x = -47/3
Divide 18/4
You get roughly 4.5 minutes 4 minutes 30 seconds
