Answer:
25 minutes
Step-by-step explanation:
Container A :
Container B:
y = final volume of water
x = number of minutes
Final volume is same so:
Answer:
Step-by-step explanation:
a + 2 = 3....a = 3 - 2.....a = 1
b + 20 = 30....b = 30 - 20.....b = 10
c + 200 = 300.....c = 300 - 200.....c = 100
d + 2000 = 3000....d = 3000 - 2000.....d = 1000
Answer:
y = x² + 6x + 8
Step-by-step explanation:
The zeros ( x- intercepts ) of the graph are x = - 4 and x = - 2, thus
the factors are (x + 4) and (x + 2) and the function is the product of the factors.
y = a(x + 4)(x + 2) ← a is a multiplier
To find a substitute (0, 8 ) the y- intercept into the equation
8 = a(0 + 4)(0 + 2) = a(4)(2) = 8a ( divide both sides by 8 )
a = 1, thus
y = (x + 4)(x + 2) ← expand using FOIL
= x² + 6x + 8
ratio of boys : girls : all students
7 : 5 : 12
multiply all by 13
91 : 65 : 156
there are 65 girls