Answer:
Step-by-step explanation:
Substitute x = 2 into both h(x) and f(x)
h(2) = = 1 ⇒ (h(2))² = 1
f(2) = 2 + 2 = 4
Hence
when x = 2
=
F(t) = 2t + 8
If t stands for the number of minutes she has been selling tickets, then we know that we must have 2t in the equation since she sells 2 tickets per minute. And since the only two left are either f(t) = 2t - 8 or f(t) = 2t + 8, the answer must be
f(t) = 2t + 8 because she is 8 tickets, not -8.
Answer:
Step-by-step explanation:
GIVEN: Suppose that the weight (in pounds) of an airplane is a linear function of the amount of fuel (in gallons) in its tank. When carrying gallons of fuel, the airplane weighs pounds. When carrying gallons of fuel, it weighs pounds.
TO FIND: How much does the airplane weigh if it is carrying gallons of fuel.
SOLUTION:
Let the fuel be represented along and weight of plane along
two coordinates are
now, equation of linear function is
putting values we get
Now when fuel is
Airplane weighs
Answer:
3xyz
Step-by-step explanation:
The required sum = 7xyz+(−5xyz)+9xyz+(−8xyz)
=7xyz–5xyz+9xyz–8xyz
=(7–5+9–8)xyz
=(16–13)xyz
=3xyz
Using the z-distribution, the estimate for how much the drug will lower a typical patient's systolic blood pressure is:
<h3>What is a z-distribution confidence interval?</h3>
The confidence interval is:
In which:
- is the sample mean.
- is the standard deviation for the population.
In this problem, we have a 80% confidence level, hence, z is the value of Z that has a p-value of , so the critical value is z = 1.28.
The other parameters are given by:
Then the bounds of the interval are:
Hence the interval is:
More can be learned about the z-distribution at brainly.com/question/25890103
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