I think I can bravely ignore the Freudian slip and solve this one.
-- If the mean of 5 tests is 90, then all 5 scores add up to (5 x 90) = 450
-- The sum of her first 4 scores is (95+ 90 + 85 + 95) = 365
-- If she has one more test to average 90, then she needs
to score (450 - 365) = <u>85</u> on it.
That looks like choice 'G '.
Answer:
470 balls
Step-by-step explanation:
Let the number of tennis balls Kerns have be x and the number of tennis balls Hardy has be 3x. We want to find their difference: 3x-x = 2x
Total no. of balls = Kerns + Hardy
= x + 3x
= 4x
4x = 940
2x = 
× 940
= 470
Answer:
It should be B- an=3n+1 because it seems to be adding one every time
Step-by-step explanation:
Answer:
She shaded area?
12 x 10 = 120
6 x 7 = 42
42 divided by 2 = 21
Now we subtract both areas:
120 - 21 = 99 of the shaded region.
Answer:
adults : 0 children: 600
Step-by-step explanation:
x + y = 600
6x＋4y = 2400
4×(x + y = 600) = 4x＋4y = 2400
(6x＋4y = 2400) － (4x＋4y = 2400) = x=0
so y=600
