Answer:
45
Step-by-step explanation:
-5x^2 - y^3 when x = -4 and x = -5
~Substitute
-5(-4)^2 - (-5)^3
~Simplify
-5(16) - (-125)
-80 + 125
45
Best of Luck!
2/7 could be 8/28 giving you a common denominator. Or you could have 4/14 and 2/14.
Answer:
The answer to the expression is 9
Step-by-step explanation:
I only know the answer for b I don't know the answer for d. So here is the answer for b 9 time 9= to 18+11+8x4-1=60
A bag contains 15 blue marbles, 5 red marbles, and 11 green marbles. How many blue marbles must be removed
from the 31 marbles in the bag so that the probability of randomly drawing a blue marble is 1/3?
Answer:
7 blue marbles
Step-by-step explanation:
15 blue
5 red
11 green
Total = 31
Number of Blue marbles that must be removed to obtain a probability of :
P(blue) = 1/3
Probability = required outcome / Total possible outcomes
Let number of blue marble to be removed = x
Number of Blue becomes : 15 - x
Total becomes : 31 - x
P(blue) = 1/3
1/3 = (15 - x) / (31 - x)
1/3 * (31 - x) = 15 - x
(31 - x) / 3 = 15 - x
31 - x = 45 - 3x
-x + 3x = 45 - 31
2x = 14
x = 14 / 2
x = 7
