Answer:
Both a = −4 and a = −1 are true solutions
Step-by-step explanation:
Given
Required
The true statement about the solutions
We have:
Square both sides
Collect like terms
Expand
Factorize
Factor out a + 4
Split:
Solve:
It says only 20 points so I'm not helping
Answer:
56
Step-by-step explanation:
Because the angle is past the 55 mark by one and 55 + 1 is 56.
Answer:
We want to find the probability that a randomly selected freshman from this college does not take an introductory statistics class, so then we can use the complement rule given by:
Where A is the event of interest (a freshman at a certain college takes an introductory statistics class) and A' the complement (a freshman at a certain college NOT takes an introductory statistics class) and then replacing we got:
Step-by-step explanation:
For this problem we know that the probability that a freshman at a certain college takes an introductory statistics class is 0.21, let's define of interest as A and we can set the probability like this:
We want to find the probability that a randomly selected freshman from this college does not take an introductory statistics class, so then we can use the complement rule given by:
Where A is the event of interest (a freshman at a certain college takes an introductory statistics class) and A' the complement (a freshman at a certain college NOT takes an introductory statistics class) and then replacing we got:
Answer:
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Step-by-step explanation: