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2 years ago

2-6² +4 2please help it's review for my finals

Mathematics

2 answers:

Ilia_Sergeevich [38]2 years ago

5 0

Answer:

Have an amazing day!

bonufazy [111]2 years ago

3 0

Answer: I don’t know :(

Step-by-step explanation:

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Y=5x+5 is the equation of a straight line graph. What is its gradient?

Nikolay [14]

Answer:

Step-by-step explanation:

The equation of a straight line is :

y=mx+c

where m is the gradient and c is the y-intercept

so if m equals 5 then the gradient is 5

6 0

2 years ago

Read 2 more answers

3.(08.01 MC)

nirvana33 [79]

Answer:

4 inches

Step-by-step explanation:

The formula is L=√((3×V)/h)

5 0

3 years ago

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

what is the altitude corresponding to the side of length 8.5 CM in a parallelogram whose area is 34 CM square

Crazy boy [7]

Area = length of base × altitude
34 = 8.5 × a
34 = 8.5a
a = 34/8.5
a = 4

The altitude of the corresponding side is 4 cm

4 0

3 years ago

How many terms are in this expression? d + 8c + 7

Fantom [35]

Answer:

Step-by-step explanation:

8 0

3 years ago

2-6² +4 2please help it's review for my finals ​

2-6² +4 2please help it's review for my finals