Answer:
Step-by-step explanation:
People in building ---- x (men, women and children)
children --- y
men + women + children = x
(3/7)x + (5/8)(4/7)x + y = x
3x/7 + 5x/14 + y = x
times 14
6x + 5x + 14y = 14x
14y = 3x
y + 220 =x
sub into the other one
14y = 3(y+220)
11y = 660
y = 60
then 14(60) = 3x ---> x = 280
So we have 280 people in the building.
check: 3/7 of 280 are men = 120
leaving 160 women and children
5/8 of these ot 100 are women
so we have 120 men, 100 women and 60 children!
hope this is right! have a great. day
Answer:
30% of 90
30% x 90
30/100 =3/10
3/10 x 90 = 270/10
270 = 27
90 - 27 = 63
Keisha has to read 63 more minutes to reach her goal.
Answer:
B(-2,5)
Step-by-step explanation:

Hope that this is helpful.
Have a nice day.
Answer:
ben daha küçük olduğum için özür dilerim yapamam 4. sınıfa gidiyorum
Step-by-step explanation:
VE puan kazanmam gerek