Answer:
75
Step-by-step explanation:
theres 100 girls
75 boys
add them and take away from 250= gives 75
Answer:
Step-by-step explanation:
Multiply: -4 and 5 which then equals X
Add Exponents: and then which finally equals to the answer,
P( two white) = 18/40 * 17/39 = 51/260
P( black then red) = 12/40 * 10/39 = 1/13
P( two black) = 12/40 * 11/39 = 11/130
P( white then black) = 18/40 * 12/39 = 9/65
Answer:
978
Step-by-step explanation:
y= -x²+ 78x - 543
y= ax²+ bx + c
a= -1, b= 78, c= -543
max = c -(b²/4a)
= -543 -(78²/-4)
= -543 + 1521
= 978