The equation that is true is 3
Boys to girls ratio is 3:4 so for every 7 students 3 are boys and 4 are girls bc 3+4 is total students in the ratio. boys are 3/7 so out of 28 students there are 12 boys and girls are 4/7 so out of 28 students 16 are girls
12/28 are boys
16/28 are girls
Answer:
I’m doing a really big test right now too go to Desmos Scientific Calculator and put the expression its should give it simplified
Step-by-step explanation:
Hello,
1) draw [AB]
2) draw mes (BAB')=78° (|AB|=|AB'| (distance))
draw the circle center B' passant by A.
3)C=middle [BB']
4) draw the half circle with [BB'] as diameter.
5) Intesection of cercle =>D
explain: any right triangle is inscribed in a semicircle
Rem: 78+90=168 and 360-168=192
5(2z + 4) = 0
10z + 20 = 0
10z = -20
z = -20/10
z = -2