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3 years ago

I need help answering these question please answer as many as you can

Mathematics

2 answers:

alexira [117]3 years ago

8 0

Picture is cropped. Can't see information.

Pavlova-9 [17]3 years ago

4 0

First i could see your image
sorry

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What is 0+0? Sayorana Tatake 2+2=?

VMariaS [17]

Answer:

0 and 4

Step-by-step explanation:

0+0=0

2+2=4

hope this helps

5 0

2 years ago

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A jacket is priced at $90.00 but has a discount of 40%. what is the sale price? show work!

alexdok [17]

Answer:

$36

Step-by-step explanation:

90*0.40=36

40%=0.40

8 0

3 years ago

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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

M thanks for th help

tangare [24]

Step-by-step explanation:

here's the answer to your question

4 0

2 years ago

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Solve.

OleMash [197]

Answer:

x< -1.8

Step-by-step explanation:

-12x+13>35

We leave the variable alone passing the 13 with opposite sign to the other side and subtracting it from 35.

-12x>22

We divide both by the variable, -12x, and it gives x > -1.8. Since the sign of x changed, we flip the sign and the final result is x < -1.8

4 0

3 years ago

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