The following are weights (in pounds) for a sample of 11 baby girls at the age of 10 months:
17.2 18.4 18.8 20.3 20.6 21.1 22 23.5 24.6 25.4 26.8
The 80th percentile for these sample data is pounds. In the sample data, out of 11 observations are less than or equal to the 80th percentile, and out of 11 observations are greater than or equal to this value. For any data set, the first quartile is the percentile, the second quartile is the percentile and the third quartile is the percentile. The first quartile for the prior sample data is pounds.

answer: she must produce at least 9,000 windows in order to make a profit of $48,000

explanation:

48,000 - 12,000 = 36,000

36,000/4 = 9,000

so firstly, we need to isolate the y variables to be able to solve these inequalities. firstly, add 0.5x on both sides of the first inequality and subtract 1.5x on both sides of the second inequality:

now since the slope is positive for the first inequality, this means that the line going upwards belongs to the first inequality, and the line going downwards belongs to the second inequality.

next, since y ≥ in the first inequality, this means that the shaded region will be above the first inequality's line, thus shading regions a and b.

next, since y ≤ in the second inequality, this means that the shaded region is going to be below this line, thus shading regions a and c.

since both lines shade region a, this means that region a is the solution.

step-by-step explanation:

mark brainliest!

sorry i just need to anwers this to get points

step-by-step explanation:

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: