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3 years ago

Help me ASAP please (Determine if the function below is continuous)

Mathematics

1 answer:

yaroslaw [1]3 years ago

7 0

Answer:i think it is C

please mark as brainliest

Step-by-step explanation:

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PLEASE HELP ASAP!!!!!<br><br> Rewrite the expression 20x + 25 as the product of two factors.

GaryK [48]

Answer:

That is the answer

5 is a factor if 20 and 25 and 4x + 5 cannot be furthor be simplified.

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2 years ago

Solve mathematics problem in photo please!

laila [671]

Hello,

8/(x-7)=7/2
==>(x-7)*7=8*2
==>7x-49=16
==>7x=65
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Answser A

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3 years ago

A research scientist wants to know how many times per hour a certain strand of bacteria reproduces. The mean is found to be 13.6

dimaraw [331]

Answer:

The confidence interval is $13.4< \mu < 13.8$

Step-by-step explanation:

From the question we are told that

The sample mean is $\= x = 13.6$

The standard deviation is $\sigma = 1.9$

The sample size is $n = 189$

given that the confidence level is 85% then the level of significance is mathematically represented as

$\alpha = (100 - 85 )\%$

$\alpha = 0.15$

Next we obtain the critical value of $\frac{\alpha }{2}$ from the normal distribution table the value is

$Z_{\frac{\alpha }{2} } = 1.44$

Generally the margin of error is mathematically represented as

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

=> $E = 1.44* \frac{1.9}{\sqrt{189} }$

=> $E = 0.1990$

The 85% confidence interval is mathematically represented as

$\= x - E < \mu$

=> $13.6- 0.1990 < \mu < 13.6+ 0.1990$

=> $13.4< \mu < 13.8$

5 0

3 years ago

PLEASE HELP The perimeter of a square is directly proportional to the length of one of its sides. The perimeter is 28 when the l

Varvara68 [4.7K]

28/7=4. As a result, the constant of proportionality is 4. Hope it help!

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3 years ago

Help pls :)

nataly862011 [7]

a or d dont read this heiejebdyueneidyebjwow isi ehbr

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2 years ago