2 years ago

Solve the equation formed when f(x) = g(x). f(x) = 2.5x − 4 g(x) = −2x + 10 a. x=1 b.x=2 c. x=3 d. x=4

Mathematics

2 answers:

san4es73 [151]2 years ago

7 0

(1+1/2+1/4) divided by

Hitman42 [59]2 years ago

3 0

Substitute the numbers for f(x) and g(x).
F(x)=g(x)
2.5x-4=-2x+10
Collect like terms
2.5x+2x=10+4
4.5x=14
Divide both sides by 4.5
4.5x/4.5=14/4.5
X=3.1111
Therefore, X=3, option C

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Samantha reports that 60% of the first year students at her university think they should be able to bring a car to campus. She a

Nostrana [21]

Answer:

D) the standard error for her sample is 15

Step-by-step explanation:

Samantha is 95% certain that between 50% and 70% of the first year students agree that they should be able to bring a car to campus.

Here

95% is the confidence level.
The range between 50% and 70% indicates 95% confidence interval.
60% is the average proportion of the first year students at her university think they should be able to bring a car to campus.
10% (0.1) is the margin of error from the mean

Since standard error can be obtained by dividing margin of error by the z-statistic of the confidence level which is 1.96. The standard error for her sample $\frac{0.1}{1.96}$ does not equal to 15.