3 years ago

Can you answer theese 2 questions i got to redo a test.

Mathematics

1 answer:

Paladinen [302]3 years ago

8 0

Answer:

I think the first one is C, and the second one also seems to be C

Step-by-step explanation:

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Please answer this correctly

Dennis_Churaev [7]

Answer:

13 students

Step-by-step explanation:

At least 30 and fewer than 67 makes it 30-66

So,

30-66 => 13 students

6 0

3 years ago

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The sum of two consecutive even integers is 138. Write an equation and solve

Alexandra [31]

X+(x+2)=138
2x+2=138
2x=136
x=68
Final answers: 68,70

5 0

3 years ago

Please help me now I need the answer to this now please help me please help

Vadim26 [7]

Answer:

Too much please's

Step-by-step explanation:

Please stop begging people to help.

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3 years ago

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Mortgage rates: Following are interest rates (annual percentage rates) for a 30-year fixed rate mortgage from a sample of lender

andreev551 [17]

Answer:

98% Confidence interval: (4.144 ,4.498)

Step-by-step explanation:

We are given the following in the question:

4.751, 4.373, 4.177, 4.676, 4.425, 4.228, 4.125, 4.251, 3.951, 4.192, 4.291, 4.414

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{51.854}{12} = 4.321$

Sum of squares of differences = 0.5602

$s = \sqrt{\dfrac{0.5602}{11}} = 0.226$

98% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 11 and}~\alpha_{0.02} = \pm 2.718$

$4.321 \pm 2.718(\frac{0.226}{\sqrt{12}} ) = 4.321 \pm 0.1773 = (4.144 ,4.498)$

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4 years ago

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What fraction of the months begin with the letter "A"?

Anestetic [448]

2/12 because of April and August but in simplest form it would be 1/6

4 0

4 years ago

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