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3 years ago

I need help with this question

Mathematics

1 answer:

Colt1911 [192]3 years ago

4 0

The answer is on that website right ?

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Shtirlitz [24]

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3 0

4 years ago

Lenox ironed 1/4 of the shirts over the weekend she splits the remandier of work equally over the next 5 day if she has 40 shirt

Sonja [21]

So she has monday-friday (5 days) to iron 40 shirts. 40 divided by 5 = 8. Lenox irons 8 shirts per day. Thursday and Friday are 2 days, so you multiply 8 by 2 which equals 16.

40 divided by 5 = 8. 8 x 2 = 16

Hope this helps :)

3 0

3 years ago

A factory fills bottles with a beverage, and each bottle is supposed to contain 500\text{ mL}500 mL500, start text, space, m, L,

Delicious77 [7]

Answer:

The test statistic for Norah's test is $t = -2$

Step-by-step explanation:

Norah is in charge of a quality control test that involves measuring the amounts in a sample of bottles to see if the sample mean amount is significantly different than 500 ml.

This means that at the null hypothesis we test if the sample mean is 500 ml, that is:

$H_0: \mu = 500$

At the alternate hypothesis, we test if it is differente than 500 ml, that is:

$H_a: \mu \neq 500$

The test statistic is:

$t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, s is the standard deviation of the sample and n is the size of the sample.

500 is tested at the null hypothesis:

This means that $\mu = 500$

She takes a random sample of 16 bottles and finds a mean amount of 497ml, and a sample standard deviation of 6ml.

This means that $n = 16, X = 497, s = 6$

Calculate the test statistic for Norah's test.

$t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}$

$t = \frac{497 - 500}{\frac{6}{\sqrt{16}}}$

$t = -2$

The test statistic for Norah's test is $t = -2$

4 0

3 years ago

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If the measure of arc DEF is 248°, what is the measure of ∡DEF?

HACTEHA [7]

The figure attached has <DEF which is an inscribed angle. An inscribed angle is an angle with its vertex on the circle which is formed by two intersecting chords. According to formulas, the measurement of arc DF is twice the measurement of ∡DEF. Arc DF is equal to 360-248 or 112. Hence <span>∡DEF is equal to 56 degrees.</span>

7 0

3 years ago

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Please help answer please

amid [387]

Answer:

x = 19

Step-by-step explanation:

x-42+x-32+180-x+17 = 180

3x +123 = 180

3x = 57

x=19

8 0

3 years ago

Read 2 more answers

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