What is the slope of (0,-8) and (-4,9)
2 answers:
Answer:
Step-by-step explanation:
We are asked to find the slope of (0, -8) and (-4, 9). We use the following formula to calculate slope.
In this formula, (x₁, y₁) and (x₂, y₂) are the points given. We have the points (0, -8) and (-4,9). If we match the given value with the corresponding variable we see that:
- x₁= 0
- y₁= -8
- x₂ = -4
- y₂= 9
Substitute the values into the formula.
Solve the numerator. Remember that 2 back to back negative signs become a positive sign.
- (9)- (-8)= 9--8 = 9+8 = 17
Solve the denominator.
- (-4)- (0) = -4-0= -4
This fraction cannot be reduced, so -17/4 is the slope.
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Answer:
Multiple answers
Step-by-step explanation:
The original urns have:
- Urn 1 = 2 red + 4 white = 6 chips
- Urn 2 = 3 red + 1 white = 4 chips
We take one chip from the first urn, so we have:
The probability of take a red one is : (2 red from 6 chips(2/6=1/2))
For a white one is: (4 white from 6 chips(4/6=(2/3))
Then we put this chip into the second urn:
We have two possible cases:
- First if the chip we got from the first urn was white. The urn 2 now has 3 red + 2 whites = 5 chips
- Second if the chip we got from the first urn was red. The urn two now has 4 red + 1 white = 5 chips
If we select a chip from the urn two:
- In the first case the probability of taking a white one is of:
= 40% ( 2 whites of 5 chips)
- In the second case the probability of taking a white one is of:
= 20% ( 1 whites of 5 chips)
This problem is a dependent event because the final result depends of the first chip we got from the urn 1.
For the fist case we multiply :
x
=
= 26.66% (
the probability of taking a white chip from the urn 1,
the probability of taking a white chip from urn two)
For the second case we multiply:
x
=
= .06% (
the probability of taking a red chip from the urn 1,
the probability of taking a white chip from the urn two)