Need some help pls. Amanda needs 3 quarters for the washing machine and 2 quarters for the dryer for a complete load at the laun
1 answer:
You might be interested in
Refer to the diagram shown below.
BE = 2x² - x
DE = x² + 6
The intersecting diagonals bisect one another.
Therefore BE = DE, so that
2x² - x = x² + 6
x² - x - 6 = 0
Factorize.
(x + 2)(x - 3) = 0
x = -2, or x = 3.
When x = -2,
BE = 2(-2)² - (-2) = 10
DE = (-2)² + 6 = 10
Therefore BD = 20
When x = 3;
BE = 2(3²) - 3 = 15
DE = 3² + 6 = 15
Therefore BD = 30
Answer: Either 20 or 30.
BE = 2x² - x
DE = x² + 6
The intersecting diagonals bisect one another.
Therefore BE = DE, so that
2x² - x = x² + 6
x² - x - 6 = 0
Factorize.
(x + 2)(x - 3) = 0
x = -2, or x = 3.
When x = -2,
BE = 2(-2)² - (-2) = 10
DE = (-2)² + 6 = 10
Therefore BD = 20
When x = 3;
BE = 2(3²) - 3 = 15
DE = 3² + 6 = 15
Therefore BD = 30
Answer: Either 20 or 30.
Answer:
is the required probability.
Step-by-step explanation:
Total number of Marbles = Blue + Red
Probability of getting blue
Probability of not getting a blue
To get exactly one blue in two draws, we either get a blue, not blue, or a not blue, blue.
<u>First Draw Blue, Second Draw Not Blue:</u>
1st Draw:
2nd Draw: (since we did not replace the first marble)
To get the probability of the event, since each draw is independent, we multiply both probabilities.
<u>First Draw Not Blue, Second Draw Not Blue:</u>
1st Draw:
2nd Draw: (since we did not replace the first marble)
To get the probability of the event, since each draw is independent, we multiply both probabilities.
To get the probability of exactly one blue, we add both of the events: