3 years ago

Please help!!! Questions above

Mathematics

1 answer:

alexgriva [62]3 years ago

4 0

The answer for this is (-2,-4) because the x axis is horizontal so it on the other side ( see picture )

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If EF = 4x-15, FG=3x-7, and EG =20, find the value of x, EF and FG. The drawing is not to scale.

Andrej [43]

Step-by-step explanation:

EF = 4x - 15

FG = 3x - 7

EG = EF + FG = 20

so,

4x - 15 + 3x - 7 = 20

7x - 22 = 20

7x = 42

x = 6

EF = 4×6 - 15 = 9

FG = 3×6 - 7 = 11

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3 years ago

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iVinArrow [24]

I can’t see the pic , im so sorry

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3 years ago

The national weather service keeps records of rainfall in valleys. Records indicate that in a certain valley the annual rainfall

Setler79 [48]

Answer:

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Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this question:

Population:

Mean 95, Standard deviation 12

Samples of size 36:

By the Central Limit Theorem,

Mean 95

Standard deviation $s = \frac{12}{\sqrt{36}} = 2$

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3 years ago

Suppose two rectangles are similar with a scale factor of 2. What is the ratio of their areas?

nikklg [1K]

<span>Similar means their sides have the same ratio but don't have to be the same length. So if two rectangles are similar with a scale factor of 2 then the ratio of their areas would be 4:1</span>

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4 years ago

The classroom that collected 197 5/8 pounds of canned food for a food drive last year has collected 72 3/4 pounds so far this ye

vlabodo [156]

Answer:

6644

Step-by-step explanation:

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3 years ago

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