If a/b < c/d with b > 0, d > 0, prove that a+c / b+d lies between the two fractions a/b and c/d .​

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319

Fill in the table with whole numbers to make 430 in five different ways