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2 years ago

Genesis has a points card for a movie theater.

Mathematics

2 answers:

7nadin3 [17]2 years ago

8 0

'v' visits.... would get her 12.5v points

She needs at least 155 points... Meaning the least she needs is 155. Also meaning she needs 155 or More...

We would represent that with a "Greater than or Equal to Sign ≥"

12.5v + 70 ≥ 155

12.5v≥155-70

v= 85/12.5

v=6.8.

Our answer can't be in decimal. She can't make 6.8 visits... Rather

The answer would be 7 Visits.

She needs a Minimum of 7visits.

Kazeer [188]2 years ago

6 0

^^^^^^^^^^ that’s the answer, give them Bria lowest.

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2 years ago

A sample of students from an introductory psychology class were polled regarding the number of hours they spent studying for the

Anni [7]

Answer:

$8.68,13.16$

Step-by-step explanation:

Hint- First we have to calculate the mean and standard deviation of the sample and then applying formula for confidence interval we can get the values.

Mean of the sample is,

$\mu=\dfrac{\sum _{i=1}^{24}a_i}{24}=\dfrac{262}{24}=10.92$

Standard deviation of the sample is,

$\sigma =\sqrt{\dfrac{\sum _{i=1}^{24}\left(x_i-10.92\right)^2}{24-1}}=5.6$

The confidence interval will be,

$=\mu \pm Z\dfrac{\sigma}{\sqrt{n}}$

Here,

Z for 95% confidence interval is 1.96, and n is sample size which is 24.

Putting the values,

$=10.92 \pm 1.96\cdot \dfrac{5.6}{\sqrt{24}}$

$=10.92 \pm 2.24$

$=8.68,13.16$

Confidence interval is used to express the degree of uncertainty associated with a sample.

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3 years ago

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Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers

A line passes through the points (0, 4) and (1, 9). What is its equation in slope-intercept

Simora [160]

Answer:

y=5x+4

Step-by-step explanation:

First get slope:

(4-9)/(0-1) = -5/-1 = 5

The y-intercept is where the graph hits the y-axis. That is also the point on the graph where x = 0. We are already given that, with point (0,4).

The y-intercept is 4.

y = mx +b, m is slope and b is the intercept.

y = 5x +4

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3 years ago