You would use the Distributive property to make the left side the same as the right side.
5(w+12) = 5w + 60
Multiply the 5 by each term inside the parenthesis.
5w +60 = 5w +60
48 2 96
—- • —- = —- 96/3 = 32 48-32 = 16
1 3 3
So her hair is 16 inches long now
Answer:
Step-by-step explanation:
UWV is a 30°-60°-90° triangle.
The sides of a 30°-60°-90° triangle are in the ratio 1:√3:2
The length of the side opposite the 90° angle is 10,
so the length of the side opposite the 30° angle is 5
and the length of the side opposite the 60° angle is 5√3
The usual margin of error we strive for is a 95% probability that our estimate is within the margin. Assuming a normal distribution (and that we have a big enough sample not to worry about t tests) that corresponds to between minus and plus two standard deviations of the mean (remember the 68-95-99.7 rule). So our margin of error is plus or minus two standard deviations.
Answer: ±2%