Answer:
Looks like <u>inverse property of addition </u>to me
Answer:
When graphing a linear inequality on a number line, use an open circle for "less than" or "greater than", and a closed circle for "less than or equal to" or "greater than or equal to". To CHECK an inequaltiy, it is not possible to test every value.
Step-by-step explanation:
Answer:
at least three are dimes
so we have 20 coins with a total of 3.50
if the rest are all quarters then there would be 4*3+2=14 but we need 20
so we are 6 short
we must have dimes in multiples of 5
12 q + 5 d=3.50 but only 17 coins
10q +10 dimes=3.50 with 20 coins
10 q +13 dimes total
algebraic solution
d+q=23
25q+10d=380
d=23-q
Answer:
18/95
Step-by-step explanation:
At first, there are 20 cubes, 9 of which are black. The probability that the first cube is black is P = 9/20.
After the first cube is selected, there are 19 cubes left, 8 of which are black. The probability that the second cube is black is P = 8/19.
The total probability is:
P = (9/20) (8/19)
P = 18/95
Answer: -2/7
Slope is change in Y over change in X
Change in y: 1-3 = -2
Change in x = 2-(-5) = 7
