hector and maggie are having a typing test hector typed 25 words in 45 seconds maggie typed 32 words in 65 second who typed at a slower rate.

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

A bridge has a single lane and is 122 feet long. The weight limit for the bridge is 20 tons. Each car that might be on the bridge is 7.4 feet long and weighs 1.2 tons. Each truck is 16 feet long and weighs 2.8 tons.

On Wednesday Connor spent $65. On Thursday, he spent $130. Connor has $311 left. How much money did Connor have to start?

a. Show that the following statement forms are all logically equivalent. p → q ∨ r, p ∧ ∼q → r, and p ∧ ∼r → q b. Use the logical equivalences established in part (a) to rewrite the following sentence in two different ways.

How many degrees are there in a one quarter term?

What is the next fraction in 15/100,3/10,45/100,6/10,75/100

In January, Desmond begins saving $25 per month for a used car. Each month, he is able to save $5 more than the previous month. After how many months will Desmond first have enough money to purchase a $3,000 used car?

Can someone explain how $3.79 x 2 = $7.58 is equivalent to $7.58/2=$3.79

Three highways connect city A with city B. two highways connect city B with city C. during rush hours, each highway is blocked by a traffic accident with probability 0.2, independently of other highways.

The weights of laboratory cockroaches follow a normal distribution with mean 80 grams and standard deviation 2 grams. about what percent of the cockroaches have weights between 76 and 84 grams?