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Mice21 [21]
3 years ago
15

Which of the following is equivalent to  (3x-1)(5x+4) ? Select all that apply.

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
8 0
The answer is 15x^2+7x-4

because:

1) 15x^2+12x-5x-4
2) 15x^2+7x-4
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Answer: (A) H0: μ = 140 mg vs. H1: μ ≠ 140 mg

Step-by-step explanation:

Usually null hypothesis represents the claim that the values associated to the groups being tested have no statistical difference but alternative hypothesis supports the claim that there is statistical difference.

Let \mu be the population mean .

We are given that the mean potassium content of a popular sports drink is listed as 140 mg in a 32-oz bottle.

i.e. Null hypothesis :H_0:\mu=140

Alternative hypothesis for two tail hypothesis has sign (≠).

i.e. Alternative hypothesis : H_1 : \mu\neq140

∴ The hypotheses for a two-tailed test of the claimed potassium content:

H0: μ = 140 mg vs. H1: μ ≠ 140 mg

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3 years ago
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Answer:

5.5

Step-by-step explanation:

y = 0.5x + 5

Use the slope-intercept form to find the slope and y-intercept.

Slope: 0.5

y-intercept: 5

Any line can be graphed using two points. Select two x values, and plug them into the equation to find the corresponding values.

To find the y intercept using the equation of the line, plug in 0 for the x variable and solve for y.

y = 0.5(0) + 5

y = 5

To graph the y intercept using the equation of the line, plug in 1 for the x variable and solve for y.

y = 0.5(1) + 5

y = 5.5

Which means when x is 0, y intercept at 5 and when x is 1 y intercept at 5.5. Graph the line using the slope and the y-intercept, or the points.

This tells us, in practical terms, that, for every one unit that the x-variable increases (that is, moves over to the right), the y-variable increases (that is, goes up) by 50% of a unit.

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Answer:

Step-by-step explanation:

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Step-by-step explanation:

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