3 years ago

Im solving variables -4y + 7 = -10y+37

Mathematics

2 answers:

Ulleksa [173]3 years ago

8 0

Answer:

Step-by-step explanation:

move the terms

collect like terms

calculate

divide both side

qwelly [4]3 years ago

4 0

Answer: y = 5

Step-by-step explanation:

(step 1) -4y + 7+ 10y = -10y + 37 + 10y

6y + 7 = 37

(step 2) 6y + 7 - 7= 37 - 7

6y = 30

(step 3) Divided both sides by 6.

6y/6 = 30/6

so the answer is y = 5

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yarga [219]

Answer:

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Step-by-step explanation:

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3 years ago

At Melville High School 20% of the girls and 50% of the boys went to a basketball game. Since 40% of all the students were girls

Dafna11 [192]

Answer:

$38\%$

Step-by-step explanation:

$Let\ total\ number\ of\ students=x\\\\Number\ of\ Girls=40\%\ of\ x\\\\Number\ of\ girls=\frac{40}{100}\times x=0.4x\\\\Number\ of\ boys=x-0.4x=0.6x\\\\$

Students went to game:

$Girls\ went\ to\ game=20\%\ of\ 0.4x\\\\Girls\ went\ to\ game=\frac{20}{100}\times 0.4x=0.2\times 0.4x=0.08x\\\\Boys\ went\ to\ game=50\%\ of\ 0.6x\\\\Boys\ went\ to\ game=\frac{50}{100}\times 0.6x=0.3x\\\\Students\ went\ to\ game=Girls\ went\ to\ game+Boys\ went\ to\ game\\\\Students\ went\ to\ game=0.3x+0.08x=0.38x\\\\Percentage\ of\ students\ went\ to\ game=\frac{0.38x}{x}\times 100=38\%$