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otez555 [7]
3 years ago
6

Can anyone help??

Mathematics
1 answer:
skad [1K]3 years ago
3 0

make two triangles. make the bottom of one triangle 135 as the shadow and "x" as the height. the other traingle should have 9 at the bottom and 5.3 as the height. then make a proportion

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Strawberries are $3.99 per pound. If a customer bought $30 worth, how many pounds did he buy? $
lubasha [3.4K]

Answer:

7.5

Step-by-step explanation:

Divide 30 by 3.99

  • 30/3.99=7.5
3 0
2 years ago
Preliminary data analyses indicate that it is reasonable to use a t-test to carry out the specified hypothesis test. Perform the
Readme [11.4K]
<h2>Answer with explanation:</h2>

By considering the given information, we have

Null hypothesis : H_0: \mu=35.0

Alternative hypothesis : H_1: \mu\neq35.0

Since the alternative hypothesis is two-tailed , so the test is a two-tailed test.

Given : Sample size : n= 20, since sample size is less than 30 so the test applied is a t-test.

\overline{x}=41.0    ;    \sigma= 3.7

Test statistic : t=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}

i.e. t=\dfrac{41.0-35.0}{\dfrac{3.7}{\sqrt{20}}}=7.252112359\approx7.25

Degree of freedom : n-1 = 20-1=19

Significance level = 0.01

For two tailed,  Significance level =\dfrac{0.01}{2}=0.005

By using the t-distribution table, the critical value of t =t_{19, 0.005}=2.861

Since , the observed t-value (7.25) is greater than the critical value (2.861) .

So we reject the null hypothesis, it means we have enough evidence to support the alternative hypothesis.

We conclude that there is some significance difference between the mean score for sober women and 35.0.

3 0
3 years ago
–q + 23 + 11n + 7j + 20 – 13r<br> What are the coefficient in this expression
kobusy [5.1K]

Answer:

11,7,13

Step-by-step explanation:

coefficients come before the variable. so if it’s 13r, the variable is r. which makes the coefficient 13

4 0
3 years ago
Please help. Will select brainliest.
IrinaK [193]

Answer:

Heptagon: D

Spetagon: D

Nonagon: B

7 0
3 years ago
What is the average rate of change for the function over the interval (-6,-4)
kozerog [31]

Answer:

i believe it is -4 1/3 i may be wrong

Step-by-step explanation:

difficult, let me see....

1st slope:-4

2nd slope:4/6

3rd slope:-3

-2+4/7-3=-5+4/6=-4 2/6=

-4 1/3

5 0
2 years ago
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