Mental measurements of children are often made by giving them
blocks and asking them to build a tower as tall as possible. One experiment was repeated one month later with the same children and the times are listed in the table below. Is there sufficient evidence to support the claim that there is a difference between the two times? Test the claim at the .05 = level of significance.

Fractions can be added and subtracted only if they're fractions. a. like b. proper c. improper d. unlike

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12