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3 years ago

What is the answer ?

Mathematics

1 answer:

Brums [2.3K]3 years ago

3 0

Answer:

https://www.khanacademy.org/math/basic-geo/basic-geo-coord-plane/quadrilaterals-on-plane/v/finding-coordinates-of-missing-vertex-example

Step-by-step explanation:

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Claim: Most adults would erase all of their personal information online if they could.A software firm survey of 453 randomly sel

Anit [1.1K]

Answer:

The value of the test statistic is 4.26.

Step-by-step explanation:

In this case a hypothesis test is performed to determine whether most adults would erase all of their personal information online if they could.

A random sample of n = 453 adults were selected and it was found that 60% of them would erase all of their personal information online if they could.

Assume that the population proportion is, p = 0.50.

A z-test for single proportion would to used to perform the test.

Compute the value of the test statistic as follows:

$z=\frac{\hat p-p}{\sqrt{\frac{p(1-p)}{n}}}$

$=\frac{0.60-0.50}{\sqrt{\frac{0.50(1-0.50)}{453}}}\\\\=\frac{0.10}{0.0235}\\\\=4.25532\\\\\approx 4.26$

Thus, the value of the test statistic is 4.26.

3 0

3 years ago

If f(x)=x²+2x then find f(2) and f(8)

kobusy [5.1K]

Answer:

f(2) = 8, f(8) = 80

Step-by-step explanation:

$f(x)=x(x+2)$

$f(2)=2(2+2)=2(4)=8\\f(8)=8(8+2)=8(10)=80$

5 0

3 years ago

In ΔFGH, the measure of ∠H=90°, the measure of ∠F=36°, and HF = 5.3 feet. Find the length of FG to the nearest tenth of a foot.

natita [175]

Answer: 6.6

Step-by-step explanation:

8 0

3 years ago

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Downloading music costs $0.99 per song, plus a registration fee of $25. Which expression represents the total cost to download x

s2008m [1.1K]

$25.99x

Step-by-step explanation:

As, for 1 song = $0.99 + $25

So, 1 song = $25.99

So, x song = $25.99 multiplied by x

Which is = $25.99x

So answer = $25.99x

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3 years ago

HELP THIS IS DUE IN 5 MINUTES!

lawyer [7]

Answer:

the first one is right, the second is less than or equal to (the second to last sign) and the last one is greater than or equal to( the last sign)

Step-by-step explanation:

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3 years ago