1. This must be greater than or equal to 0 (there can't be any negatives!)
8 - .5t ≥ 0.
8 ≥ .5t
t ≤ 16
D.
2. 4(2x-1) = 2x + 35
8x - 4 = 2x + 35
6x = 39
x = 6.5
H.
3. c = .8(x-15) = .8x-12
A.
4. m = number of marble cupcakes
s = number of strawberry shortcake cupcakes
6m + 8.5s = 391
m = 1/2s
6(.5s)+8.5s = 391
11.5s = 391
s = 34
m = 17
F.
5. B
6. Use substitution
2x + 3x = 10
5x = 10
x = 2
7. (sorry I'm not sure!)
8. G
9. L = number of balls
B = number of bats
L + B = 100
B = 100 - L
4.5L+20B = 822
4.5L + 20(100-L) = 822
4.5L -20L + 2000 = 822
1178 = 15.5L
L = 76
10. J
Answer:
(3x-2)(x+4y)
Step-by-step explanation:
3x^2-2x+12xy-8y
3x^2+12xy=3x(x+4y)
-2x-8y=-2(x+4y)
3x^2-2x+12xy-8y=3x(x+4y)-2(x+4y)
(3x-2)(x+4y)
Answer:
P= positive N=negative P x N = N N x P = N P x P = P N x N = P Hope that helps!?!?!
Step-by-step explanation:
Answer:
Step-by-step explanation:
Last Wednesday it was 90 degrees Fahrenheit.
Today it is 15 degrees Fahrenheit colder than it was last Wednesday.
So, today's temperature will be the difference of the temperatures of last Wednesday's and today's temperature. We have to find the difference as it is colder today means it is a lower temperature than last Wednesday's.
Today's temperature is
Range= difference between highest and lowest number. 9-1=8. Range is 8
Mode = number that occurs the most. 3 occurs once, 4 occurs 5 times, nine occurs once, and 1 occurs twice. Thus, the mode is 4