Answer:
31,41,51,71
Step-by-step explanation:
Answer:
B. -2.5
Step-by-step explanation:
-2.5 is not an integer
-8/4 = - 2 this is an integer
The answer would be 32.40$ given that 10% off is a total of 3.60$
Start with the x intercepts.
You need to factor the original function.
y = x^2 - 4x - 21
y = (x - 7)*(x + 3) These are the correct factors.
The two roots are
x = 7
x = - 3
So the two points you want are (7,0) and (-3,0)
That makes the answer C <<<<========
The vertex is a little harder. You need to complete the square to get it. (I take it you don't know any calculus yet.
y = x^2 - 4x - 21
y = (x^2 - 4x + ... ) - 21
y = (x^2 - 4x + 4) - 21 - 4
y = (x - 2)^2 - 25
The vertex is (2,- 25)
The answer is B <<<<<<=======
Answer:
Mean of the Population or The claimed population mean 'μ' = 5.5 hrs.
Mean of the sample 'x⁻' = 6.25 hours
Step-by-step explanation:
<u><em>Explanation</em></u>:-
Given data A recent article in a college newspaper stated that college students get an average of 5.5 hrs. of sleep each night
Discuss about total college students so
<em>Mean of the Population 'μ' = 5.5 hrs.</em>
Given random sample size 'n =25
Given data the sampled students slept 6.25 hours per night
<em>mean of the sample 'x⁻' = 6.25 hours</em>