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3 years ago

Help! can someone help me out on this?

Mathematics

1 answer:

Fynjy0 [20]3 years ago

6 0

Answer:

solve by substitution method

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One fish is 4 feet below sea level. Another fish is 3 feet below sea level. Write each position as an integer. Which integer is

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Answer:

fish a has a great interest

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3 years ago

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4 over 25 as a decimal

BabaBlast [244]

Answer:

0.16

Step-by-step explanation:

Simply divide 4 by 25

4/25=0.16

Hope this helps : )

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3 years ago

Point P partitions the directed segment from A to B into a 1:3 ratio. Q partitions the directed segment from B to A into a 1:3 r

Georgia [21]

Answer:

Step-by-step explanation:

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4 years ago

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Lucy is using a one-sample t‑test based on a simple random sample of size n=27 to test the null hypothesis H0:μ=8.000 cm against

Mandarinka [93]

Answer: t= 0.866

Step-by-step explanation:

Formula to find t-test statistic :

$t=\dfrac{\overlien{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

where, n= sample size

$\overline{x}$ = sample mean

$\mu$ = Population mean

$s$ =sample standard deviation

Given : Null hypothesis : H0:μ=8.000 cm

Alternative hypothesis : H1:μ<8.000 cm , since alternative hypothesis is one-tailed , so the test is one-tailed test.

$n= 27\\ \overline{x}=8.137\ cm\\ s=0.822\ cm$

Then , the t‑statistic for this test will be :-

$t=\dfrac{8.137-8.000}{\dfrac{0.822}{\sqrt{27}}}$

$t=\dfrac{0.137}{0.15819}=0.86604715848\approx0.866$

Hence, the value of the t‑statistic for this test : t= 0.866

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4 years ago

A scientist measured the wavelength of an X-ray as 0.0000000065 meters.

ryzh [129]

Answer:

6.5 * 10 ^ -9

Step-by-step explanation:

0.0000000065

Scientific notation means a* 10 ^b

where a is number between 1 and less than 10

Move the decimal 9 places to the right which means the power of 10 is negative since we moved the decimal to the right

6.5

The power of 10 is -9

6.5 * 10 ^ -9

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3 years ago

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