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zimovet [89]
2 years ago
11

Write an equivalent expression for 5+2+2x+2 please help me ​

Mathematics
1 answer:
patriot [66]2 years ago
8 0

Answer:

2x+9

Step-by-step explanation:

You have to combine like terms. 2x stays the same because there are no other like terms, but 5, 2, and 2 can be added together to make 9

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Say that the national weather service claims the average number of tornados that occur in Ohio annually is 52. Your team of weat
g100num [7]

Answer: we would reject the null hypothesis that the mean was equal to 52 at a level of significance of alpha = 0.05.

Step-by-step explanation:

The null hypothesis is the hypothesis that is assumed to be true while the alternative hypothesis is the statement that is believed to be true if the null hypothesis is rejected.

From the given information, the null hypothesis is

µ = 52

The decision rule would be to accept the null hypothesis if the level of significance is lesser than the p value and reject the null hypothesis if the level of significance is greater than the p value

Since alpha, 0.05 > than the p value, 0.016, then we would reject the null hypothesis.

7 0
3 years ago
A pole that is 3.1 m tall casts a shadow that is 1.16 m long. At the same time, a nearby building casts a shadow that is 46.25 m
Blababa [14]

Answer:

124\text{ m}

Explanation:

Here, we want to get the height of the building

Firstly, we need a diagrammatic representation of the presented information

We have that as follows:

The structures and their shadows form right triangles

Right triangles are similar

When two shapes are similar, the ratio of their corresponding sides is equal

Thus, we have it that:

\begin{gathered} \frac{1.16}{3.1}\text{ = }\frac{46.25}{h} \\  \\ h\text{ = }\frac{46.25\times3.1}{1.16} \\  \\ h\text{ = 123.599 m} \end{gathered}

To the nearest m, this is 124 m

5 0
1 year ago
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