A company that makes hair-care products had 4,000 people try a new shampoo. Of the 4,000 people, 28 had a mild allergic reaction. What percent of the people had a mild allergic reaction?

Two adjacent angles form a right angle. What type of angle pair do they form?

12 is 2% of what? How?

Which number is not in scientific notation? A) 9 ⋅ 10 to the power of 19 B) 7.8 ⋅ 10 to the power of 6 C) 1.45 ⋅ 10to the power of - 7 D) 0.33 ⋅ 10 to the power - 15

Find the geometric mean of the pair of numbers below. If necessary, give the answer in simplest radical form. 5 and 18

Which function in the vertex form is equivalent to f (x) = 4+x2-2x

You walk 1 and 1/4 miles in 45 minutes. How many miles per hour do you walk?

The first term of a geometeic series is 1/27, the common ratio is 1/3, find the explicit formula geonetric series?

11/6 as a mixed number

If an item is marked $520 during a 20% off sale, what is the regular price

A gardener buys a plant that is 12cm in height. Each week after that the plant grows 10cm. Note: The plant is 12cm high at the beginning of the week. what is the formula and value for t10 and t12 in an arithmetic sequence?