Mathematics: A. Three fifths of the students in the class are boys. If there are 15 boys in the class, how many students are there in all?

A. Three fifths of the students in the class are

Ответ:

hfleysher

18.03.2022

Mathematics

25 students.

Step-by-step explanation:

15 = 3/5

divide by 3 to find 1/5 of the class

5 = 1/5

multiply by 5 to find 5/5 (100%) of the class

25 = 1

There are 25 students in the class.

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Ответ:

terryhgivens5349

24.07.2021

Mathematics

$\huge\boxed{x\geq-9}$

Step-by-step explanation:

$\dfrac{-x}{3}-2\leq1\qquad|\text{add 2 to both sides}\\\\\dfrac{-x}{3}-2+2\leq1+2\\\\\dfrac{-x}{3}\leq3\qquad|\text{multiply both sides by 3}\\\\3\!\!\!\!\diagup\cdot\dfrac{-x}{3\!\!\!\!\diagup}\leq3\cdot3\\\\-x\leq9\qquad|\text{change the signs}\\\\x\geq-9$

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A. Three fifths of the students in the class are boys. If there are 15 boys in the class, how many students are there in all?

Ответ:

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