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Marrrta [24]
3 years ago
5

Write a number sentence that tells what the model represents

Mathematics
2 answers:
Alexxx [7]3 years ago
4 0
5X3=15 i think is the answer
nataly862011 [7]3 years ago
3 0
Can you say more details
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What is 0.277 rounded to the nearest hundredth?
poizon [28]
It's  0.28 because 7 is greater than 4 so you round the number before that up by 1
7 0
3 years ago
Read 2 more answers
A particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it needs to be replaced. From past
Minchanka [31]
<h2><u>Answer with explanation</u>:</h2>

Let \mu be the distance traveled by deluxe tire .

As per given , we have

Null hypothesis : H_0 : \mu \geq50000

Alternative hypothesis : H_a : \mu

Since H_a is left-tailed and population standard deviation is known, thus we should perform left-tailed z-test.

Test statistic : z=\dfrac{\overlien{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}

where, n= sample size

\overline{x}= sample mean

\mu= Population mean

s=sample standard deviation

For n= 31,\ \sigma=8000,\ \overline{x}=46,800\ \&\ s=46,800, we have

z=\dfrac{46800-50000}{\dfrac{8000}{\sqrt{31}}}=-2.23

By using z-value table,

P-value for left tailed test : P(z≤-2.23)=1-P(z<2.23)   [∵P(Z≤-z)=1-P(Z≤z)]

=1-0.9871=0.0129

 Decision : Since p value (0.0129) < significance level  (0.05), so we reject the null hypothesis .

[We reject the null hypothesis when p-value is less than the significance level .]

Conclusion : We do not have enough evidence at 0.05 significance level to support the claim that t its deluxe tire averages at least 50,000 miles before it needs to be replaced.

4 0
3 years ago
Frank and Latoya each ran every day as part of an exercise routine. Frank ran
salantis [7]
3 miles each day for x days is 3x
5 miles each day for y days is 5y
Frank ran at least as many miles as Latoya is 3x >/= 5y
5 0
3 years ago
Maya collected data about the number of ice cubes and milliliters of juice in several glasses of juice and organized the data in
Alex_Xolod [135]

Answer: B. 89

Step-by-step explanation:

-29.202x7= -204.414

-204.414+293.5= 89.086

So the answer is B. 89

5 0
3 years ago
Complete the similarity for the two triangles shown. <br><br> Triangle ABC
gizmo_the_mogwai [7]

Answer:

triangle EFD

Step-by-step explanation:

5 0
3 years ago
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