Find the standard deviation of the dа ta: 10, 8, 15, 20, 6, 14, 11, 12, 9

R=1/6 the problem is 3r2

On a coordinate plane, a parabola opens up. Solid circles appear on the parabola at (negative 6, 6), (negative 4.5, 2.25), (negative 3, 0), (negative 1.5, negative 0.75), (0, 0), (1,5, 2.25), and (3, 6).

What is exspanded notation for 3.6 and 4

What is the solution to the inequality d/7 + 4 ≤ 0?] (-∞, - 28) (-∞, - 28] (28, ∞) [28, ∞)

The measure of angle b is three times the measure of angle a. the sum of the angle measures is 128°. find the value of x.

129 is 43% of what amount?

In a class of 160 students, 90 are taking math, 78 are taking science, and 62 are taking both math and science. What is the probability of randomly choosing a student who is not taking science? 69% 44% 51% 49%

Does a parallelogram have to have an acute angle

The owner of an audio store recived a shipment of portable stereos at a cost of $102.30 each. If he sells the stereos for 181.99 each, what is the percent of markup? Round to the nearest whole percent

A pair of boots has an original price of $95. They are on sale for 35 percent off. What number can you multiply $95 by to equal the discounted price of $61.75?