samueljsmith200 samueljsmith200

15-12-2019
Mathematics

contestada

Algebra class has a total of 25 students. Twice the number of girls is equal to 3 times the number of boys. How many boys and girls are in the class

Respuesta :

24desmm 24desmm

15-12-2019

X= # of girls
Y= # of boys
X+Y=25
2X=3Y

Y=(-X+25) put into Y
2X=3Y

2X=3(-X+25)
2X= -3X+75
+3X
5X=75
X= 15

Plug X into one of the original equations

2(15)=3Y
30=3Y
Y=10

Ten boys and 15 girls (Solving Systems of Equations -Substitution)

Answer Link

Otras preguntas

find the image of (5,7) obtained by translating 3 units to the right, followed by a reflection over the x-axis

Name some activities that are conventional Description of conventional: People with Conventional interests like work that follows set procedures and routines. T

What are the bacterial transformation steps

sex cells are referred to as which of the following A.gametes B.ovaries C.zygotes

How does blood cycle from the heart to the lungs, back to the heart and out to the body? Use the terms heart, lungs, arteries, veins, capillaries, cells, oxygen

One of the major complications of diabetes is delayed wound healing. People with diabetes also often experience neuropathy—numbness or loss of sensation on the

) In the Deacon process for the manufacture of chlorine, HCl and O2 react to form Cl2 and H2O. Sufficient air (21 mole% O2, 79% N2) is fed to provide 35% excess

eight times the sum of 5 and some number is 104. What is the number

how would you deal with this hard headeness

the perimater of the triangle is 30cm. its sides are in the ratios 1:3:2, then find its sides