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3 years ago

Identify the coordinate of the variable shown on the number line. point h

Mathematics

1 answer:

belka [17]3 years ago

6 0

Can you please be more specific. And I see no diagrams or numberline at all.

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There is a proportional relationship between y and x. When x=2, y=-9.

suter [353]

They just told me to answer a bunch of questions sorry i dont know this best of luck tho !

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2 years ago

A piano teacher charges students $20.25 each month, plus $5.25 per hour for lessons.

Tomtit [17]

Answer:

99$

Step-by-step explanation:

you take the 5.25$ per hour and multiply it by the 15 hours, and then you add the 20.25$ per month

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3 years ago

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What slope would a line have to be perpendicular to a line with a slope of 1/4 ?

denpristay [2]

Answer:

A line perpendicular to another has a slope that is the negative reciprocal of the slope of the other line. The negative reciprocal of the original line is –2, and is thus the slope of its perpendicular line.

Step-by-step explanation:

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2 years ago

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Which ratio it's less then 7/9 I need help ASAP

diamong [38]

Answer:

7/9

Step-by-step explanation:

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2 years ago

A major department store chain is interested in estimating the mean amount its credit card customers spent on their first visit

sergiy2304 [10]

Answer:

95% Confidence interval: (39.43, 61.58)

Step-by-step explanation:

We are given the following in the question:

Sample mean, $\bar{x}$ = $50.50

Sample size, n = 15

Alpha, α = 0.05

Sample standard deviation = 20

95% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 14 and}~\alpha_{0.05} = \pm 2.1447$

$=50.50 \pm 2.1447(\dfrac{20}{\sqrt{15}} ) \\\\= 50.50 \pm 11.0751 \\= (39.4249,61.5751)\\\approx (39.43, 61.58)$

95% Confidence interval: (39.43, 61.58)

8 0

3 years ago