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seropon [69]
3 years ago
9

Which expression represents the sentence? Quadruple a number minus 17?

Mathematics
2 answers:
azamat3 years ago
3 0
It is B

4n is n multiplied by 4, which is quadrupled.

then, it is 4n - 17


kirill115 [55]3 years ago
3 0
The answer would be B because you are multiplying by 4 or quadrupling and subtracting 17 too like it says in the problem.
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Medicare would like to test the hypothesis that the average monthly rate for one-bedroom assisted-living facility is equal to $3
aliina [53]

Answer:

C) more than the absolute value of the critical value, we can conclude that the average monthly rate for an assisted-living facility is not equal to $3,300.

Step-by-step explanation:

Hello!

Interest hypothesizes is " the average monthly rate for one-bedroom assisted-living facility is equal to $3300" symbolically: μ = 3300

The study variable is:

X: Monthly rate for a one-bedroom assisted-living facility.

Since there is no information about the distribution of the variable, to be able to study the population mean, I'll assume that the variable has a normal distribution.

The hypothesis is:

H₀: μ = 3300

H₁: μ ≠ 3300

α: 0.05

The statistic to use, considering that there is no known population information and the sample size, is a Student t:

t= <u> X[bar] - μ </u> ~t_{n-1}

       S/√n

n= 12

X[bar]= $3690

S= $530

Using the sample data, calculate the statistic value:

t= <u> 3690 - 3300 </u> = 2.549

       530/√12

The rejection region for this test is two-tailed, with critical values:

t_{n-1; \alpha /2} = t_{11; 0.025} = -2.201

t_{n-1;1-\alpha /2} = t_{11; 0.975} = 2.201

The decision rule is:

Reject the null hypothesis if t ≤ -2.201 or if t ≥ 2.201

Not reject the null hypothesis if -2.201 < t < 2.201

Since the calculated value (2.549) is greater than the right critical value (2.201) the decision is to reject the null hypothesis.

With a signification level of 5%, there is enough evidence to reject the null hypothesis. This means that the population mean of the monthly rate for a one-bedroom assisted living facility is different from $3300.

I hope it helps!

7 0
3 years ago
Which set of transformations have been performed on triangle ABC to form triangle A′B′C′? (1 point)
Murrr4er [49]

Answer:

The answer is dilation by a scale factor of 2 followed by reflection about the y- axis.

Step-by-step explanation:

3 0
3 years ago
How can you determine is a math question is an equation or an expression?
Tatiana [17]

An equation will have an answer at the end like an equal sign. (Ex; 20+20=40)

An expression will NOT have an answer. (Ex; 20+20)

5 0
3 years ago
Read 2 more answers
Which table of ordered pairs represents a linear function? x y −6 26 0 3 6 26 12 101 x y −6 −3 0 3 6 1 12 2 x y −6 −3 0 3 6 9 6
Afina-wow [57]

In each table, the x-values differ by 6. A linear function will also have a constant difference of y-values. Only the 4th table has that.

(x, y) = (-6, -3), (0, 2), (6, 7), (12, 12)

_____

An increase in x by 6 produces an increase in y by 5. The slope of this linear function is 5/6. In slope-intercept form, the equation is y = (5/6)x + 2.

7 0
3 years ago
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Please help me!! Iv been stuck!
Sloan [31]

Answer:

7

Step-by-step explanation:

Because the leftmost triangle is a 45-45-90 isosceles right triangle, a = b =\frac{7\sqrt2}{\sqrt2} = 7\\

The rightmost triangle is a 30-60-90 triangle, and the side lengths are in the proportion 1:\sqrt3:2 from shortest to longest. Therefore, c = 7\cdot\frac{\sqrt3}{1} = 7\sqrt{3} \implies \boxed{7}

7 0
3 years ago
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