apple1367

18.08.2019 • 

Mathematics

Mr. robinson has 20 students in his martial arts class. the ratio of boys to girls is 4: 1. how many boys and girls are in mr. robinson's class?
a. 15 boys, 5 girls
b. 5 boys, 15 girls
c. 16 boys, 4 girls
d. 4 boys, 16 girls
which of the following equations is an example of the distributive property?
a. (5)(3) = (3)(5)
b. 5+3 = 3+5
c. (5)(1+2) = (5)(1) + (5)(2)
d. 15=15

Ответ:

alexiannaa

30.12.2021

Mathematics

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1) Ratio - 4:1

thus, 4x + 1x = 20
5x = 20

thus, x = 20/5 = 4

thus, x = 4
and, 4x = 16

Thus, the answer is (C) 16 boys and 4 girls

2) According to distributivity, a(b+c) = ab + ac

Thus, the answer is (C)

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Ответ:

janayshas84

30.12.2021

Mathematics

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1.4x+x=20
5x=20
x=4 there are 16 girls and 4 boys

2.c

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Ответ:

miaglory3828

10.07.2022

Mathematics

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Step-by-step explanation:

7680 i think

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