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3 years ago

In which of the following expressions is 5 a coefficient?

Mathematics

2 answers:

Fed [463]3 years ago

8 0

Answer:

The first one, 5y +42

Step-by-step explanation:

A coefficient is a variable with a number multiplied to it. Ex. 3y

Only in the first one is 5 a coefficient.

Gelneren [198K]3 years ago

4 0

Answer:

The first one

Step-by-step explanation:

I hope this helps with your answer :)

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Rama09 [41]

It would be 5 because 5+4=9 and 9>8 (9 is greater than 8)

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3 years ago

Seven eighths times 2 please help

Anna007 [38]

7/8 × 2 = 14/8

14 / 8 = 1.75

17.5 is the Answer

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3 years ago

Read 2 more answers

A sample of 5 buttons is randomly selected and the following diameters are measured in inches. Give a point estimate for the pop

Helen [10]

Answer:

$s^2 = \frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}$

But we need to calculate the mean with the following formula:

$\bar X = \frac{\sum_{i=1}^n X_I}{n}$

And replacing we got:

$\bar X = \frac{ 1.04+1.00+1.13+1.08+1.11}{5}= 1.072$

And for the sample variance we have:

$s^2 = \frac{(1.04-1.072)^2 +(1.00-1.072)^2 +(1.13-1.072)^2 +(1.08-1.072)^2 +(1.11-1.072)^2}{5-1}= 0.00277\ approx 0.003$

And thi is the best estimator for the population variance since is an unbiased estimator od the population variance $\sigma^2$

$E(s^2) = \sigma^2$

Step-by-step explanation:

For this case we have the following data:

1.04,1.00,1.13,1.08,1.11

And in order to estimate the population variance we can use the sample variance formula:

$s^2 = \frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}$

But we need to calculate the mean with the following formula:

$\bar X = \frac{\sum_{i=1}^n X_I}{n}$

And replacing we got:

$\bar X = \frac{ 1.04+1.00+1.13+1.08+1.11}{5}= 1.072$

And for the sample variance we have:

$s^2 = \frac{(1.04-1.072)^2 +(1.00-1.072)^2 +(1.13-1.072)^2 +(1.08-1.072)^2 +(1.11-1.072)^2}{5-1}= 0.00277\ approx 0.003$

And thi is the best estimator for the population variance since is an unbiased estimator od the population variance $\sigma^2$

$E(s^2) = \sigma^2$

3 0

3 years ago

A fish tank is 9 feet long how many inches is this?

Gnoma [55]

1feet = 12 incches so 12times by 9=108 inches

4 0

3 years ago

Yesterday, between noon and midnight, the temperature dropped by 25.8°F. If the

SVEN [57.7K]

15.1 f

Step-by-step explanation:

-13.4+25.8= 15.1 F

8 0

2 years ago