Answer: 30 boys
Step-by-step explanation:
Boys:Girls
3 : 1
Let no. of girls =x
⇒ no. of boys =3x.
⇒ no. of students in class =4x
=
4/3×3x
= 4
/3 ×no. of boys
40=4/3* no.of boys
40* (3/4)=no.of boys
30=no of boys
Answer:
50⁰
Step-by-step explanation:
Add 130 plus 50 to get 180.
Answer:
616 cm²
Step-by-step explanation:
To find the area of a circle you use the formula A = π · r²
So we know that the diameter is 28 cm, to find the radius we would divide this in half, because d = 2r, giving us 14. Now we can do 14² which is 196, and then times that by pi or in this case 22/7.
196 × (22/7) = 616
2 quarters,4 nickels, and 7 dimes 50+20+70=140 she has 1.40$"