11-03-2016
Mathematics

contestada

Forty students are In Science club. Of those 45% are girls. This percent increase 56% after new girls join the club. How many new girls joined?

Respuesta :

11-03-2016

45% of 40 is 0.45×40=18 girls
if x girls join then 56% of 40+x is 0.56(40+x)=18+x
22.4+0.56x=18+x
put together like terms
4.4=0.44x
x=10 girls joined

Answer Link

Otras preguntas

what news does president washton share with hamilton.

Determine which integers in the set S:{-24, -6, 12, 24) will make the inequality (m-3) s(m-12) false. OS:{-24, 24} OS:{-24, -6} OS:{-6, 12} OS:{12, 24}

1. Explain what is meant by the sub-heading, "The Native Americans had a mighty culture when the English arrived 400 years ago. Soon after, there was conflict."

how to get to meausre density, volume or mass

I want someone I can talk to and is in 7th or 8th grade and replies fast

Find the solution of the systems of equations 10x-2y=44 -2x-9y=10

Given that r is a vector 125 km due north, and s is a vector 164 km due south, what are the hr magnitude and direction of the sum r + s?

Solve for x 5x+7>-13

which is not a way for carbon dioxide to reach the atmosphere

URGENT!! ILL GIVE BRAINLIEST!!!! AND 100 POINTS!!!!!