All categories

3 years ago

Sin 30*=square root 3/2 true or false

Mathematics

1 answer:

Sphinxa [80]3 years ago

5 0

Answer:

Step-by-step explanation:

Sin(30o) = 0.5 or 1/2

Sin(60o) = sqrt(3)/2

So the statement is false

You might be interested in

What is the median of this list of numbers? 22, 18, 23, 36, 26, 18, 29. A. 22 B. 18 C. 23 D. 36

7nadin3 [17]

Answer:

C. 23

Step-by-step explanation:

18 18 22 23 26 29 36

23 is in the middle

5 0

3 years ago

Find the function y = f(t) passing through the point (0,12)

Akimi4 [234]

Y=t+12 this is one the answers

7 0

3 years ago

Answers and step by step explanations please?(Just one example)

Allushta [10]

Answer is 4x x 3y >e3£

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

How do i find the unknown side length of #9?

Natali5045456 [20]

You can find the unknown side length by using pythagorean theorem. a²+b²=c²
Simply plug-in numbers into the formula. Your answer is 80.

4 0

3 years ago