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Travka [436]
2 years ago
8

PLEASE HELP ME!!! I AM FAILING AND NEED THE ANSWERS!!! I WILL GIVE BRAINLIEST, PLEASE!!!!!

Mathematics
1 answer:
Ivan2 years ago
4 0

Answer:

14.7 mph

Step-by-step explanation:

s = (18d)^.5

Plug in 12 for d and solve

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Need help asap please
Bezzdna [24]

Answer:

4.77*10^5<7.47*10^5

Step-by-step explanation:

4.77*10^5=477000

7.47*10^5=747000

7 0
3 years ago
A random sample of 87 eighth grade students’ scores on a national mathematics assessment
Finger [1]

There is not enough evidence to support the administrator’s claim and the true mean is not significantly greater than 280.

<h3>What is a statistical hypothesis?</h3>

A hypothesis to test the given parameters requires that we determine if the mean score of the eighth graders is more than 283, thus:

The null hypothesis:

\mathbf{H_o \leq 283}

The alternative hypothesis:

\mathbf{H_i > 283}

From the population deviation, the Z test for the true mean can be computed as:

\mathbf{Z = \dfrac{\hat X - \mu _o}{\dfrac{\sigma}{\sqrt{n}}}}

\mathbf{Z = \dfrac{283 -280}{\dfrac{37}{\sqrt{87}}}}

Z = 0.756

Note that, since we are carrying out a right-tailed test, the p-value for the test statistics is expressed as follows:

P(z > 0.756)

P = 0.225

Since the P-value is greater than the significance level at α = 0.14, we can conclude that there is not enough evidence to support the administrator’s claim and the true mean is not significantly greater than 280.

Learn more about hypothesis testing here:
brainly.com/question/16251072

#SPJ1

8 0
1 year ago
Indigo Depot is having a clearance sale of their summer items. A swimsuit that originally cost $120 before any discount is on sa
gtnhenbr [62]

Answer:

20

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
What is the slope????
murzikaleks [220]

Answer:

-6

Step-by-step explanation:

is that quizzes join lol

8 0
3 years ago
Find the inverse of function f<br> f(x)9x+7
kap26 [50]

The inverse of function f(x) = 9x+7 is f-1(x) = x/9 - 7/9

<h3>How to determine the inverse of the function?</h3>

The function is given as:

f(x) = 9x + 7

Express f(x) as y

y = 9x + 7

Swap the positions of x and y in the above equation

x = 9y + 7

Subtract 7 from both sides

9y = x - 7

Divide through by 9

y = x/9 - 7/9

Express as an inverse function

f-1(x) = x/9 - 7/9

Hence, the inverse of function f(x) = 9x+7 is f-1(x) = x/9 - 7/9

Read more about inverse functions at:

brainly.com/question/14391067

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5 0
1 year ago
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