Mathematics, 31.01.2020 12:01 zack66828
Craig uses a ruler to determine the length of two pieces of metal. he records the length of each piece of metal as a rational number. which statement best explains whether the sum of the two lengths craig recorded must also be a rational number?
a. when adding two rational numbers a/b and c/d, the numerators a and c do not have to be integers. therefore, the sum does not have to be a rational number.
b. when adding two rational numbers a/b and c/d, the common denominator bd does not have to be an interger. therefore, the sum does not have to be a rational number.
c. when adding two rational numbers a/b and c/d, the sum is ac/bd, and both the numerator and denominator are integers. therefore, the sum must be a rational number.
d. when adding two rational numbers a/b and c/d, the sum is ad+bc/bd, and both the numerator and denominator are integers. therefore, the sum must be a rational number.
Answers: 3
Mathematics, 21.06.2019 15:30
Match each equation with the operation you can use to solve for the variable. 1 subtract 10 2 divide by 10 3add 18 4add 10 5 subtact 18 6multiply by 5. 7multiply by 10. a 5 = 10p b p + 10 = 18 c p + 18 = 5 d 5p = 10
Answers: 3
Mathematics, 21.06.2019 20:00
The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212
Answers: 1
Mathematics, 21.06.2019 20:30
Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?
Answers: 1
Craig uses a ruler to determine the length of two pieces of metal. he records the length of each pie...
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