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3 years ago

Please help now with homework

Mathematics

1 answer:

damaskus [11]3 years ago

5 0

The correct answer is 1.25 dollars per pound. You can check it by multiplying it with 4.16

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Sheila has five times as many markers as day together they have 18 markers how many markers does Sheila have

amid [387]

Is the answer 15? If not are there any options?

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3 years ago

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What is 70% of 40,000.

timurjin [86]

Answer:

x = 28,000

Step-by-step explanation:

"What" is our unknown, x; "is" is an equals sign; 70% expressed as a decimal is .70; "of" means to muliply.

Our equation, then, is

x = .70(40,000) so

x = 28,000

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3 years ago

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Alona [7]

Answer:

The lower limit is 75.04

The upper limit is 78.96

Step-by-step explanation:

From the question we are told that

The sample size is $n = 25$

The sample mean is $\= x = 77$

The standard deviation is $\sigma = 5$

Given that the confidence level is 95% then the level of significance is mathematically represented as

$\alpha = (100 - 95)\%$

$\alpha = 0.05$

The critical value for $\frac{\alpha }{2}$ obtained from the normal distribution table is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \frac{\sigma }{\sqrt{n} }$

=> $E = 1.96* \frac{5 }{\sqrt{25} }$

=> $E = 1.96$

The 95% confidence interval is mathematically represented as

$\= x -E < \mu < \= x +E$

=> $77 - 1.96 < \mu < 77 + 1.96$

=> $75.04 < \mu < 78.96$

7 0

2 years ago

3x + 6 =<br><br> plss help me with this

Y_Kistochka [10]

Answer:

3× + 6

3+6=9

9×3=3

Finish

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3 years ago

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Pls help due in 5 min

Ainat [17]

Answer:

Enlargement? or try Translation

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2 years ago