Mathematics, 28.10.2020 02:10 hillmarilyn70pe8sy6

Joanie believes that you cannot use cross products to solve the proportion StartFraction 50 over 3 EndFraction = StartFraction 75 over x EndFraction for x. She says that if you multiply both sides of the equation by x, you get StartFraction 50 x over 3 EndFraction = 75. Then, if you multiply both sides of the equation by 3, you get 50 x = 75, which is a different equation than you would get if you cross multiplied. What mistake did Joanie make in her reasoning?

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 14:50, ayoismeisalex

Name the most appropriate metric unit for each measurement like a length of an carrot

Answers: 2

continue

Mathematics, 21.06.2019 17:00, nelyanariba981p555ve

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

Answers: 1

continue

Mathematics, 21.06.2019 20:00, tessafargo

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

Answers: 1

continue

Mathematics, 21.06.2019 20:30, jon3232

If rt is greater than ba, which statement must be true ?

Answers: 1

continue

You know the right answer?

Joanie believes that you cannot use cross products to solve the proportion StartFraction 50 over 3 E...