All categories

3 years ago

Which of these is equal to sin 58°?

Mathematics

1 answer:

forsale [732]3 years ago

7 0

Answer:

C Cos32

Step-by-step explanation:

You might be interested in

For this you are subtrating polynomial expressions

slava [35]

Hi, The answer is 2x^2-8x+12, because when you subtract the polynomial with the answer you will get x^2-4

3 0

3 years ago

Elis [28]

Answer: 151 books

Step-by-step explanation: 243-65-59+32=151

4 0

3 years ago

Read 2 more answers

Rebecca measured herself and she was 52 in tall how many feet tall was she

Drupady [299]

Hi there!☺

52 inches in feet would be about 4.3 feet.

~Elisabeth

8 0

3 years ago

Please answer fast!!!!!!!!!!!

DaniilM [7]

Should be the fourth answer.
$\frac{ - 5}{1} \frac{13}{0}$

5 0

3 years ago

Read 2 more answers

Two researchers conducted a study in which two groups of students were asked to answer 42 trivia questions from a board game. Th

denpristay [2]

Answer:

(1) Correct option is B.

(2) Correct option is C.

Step-by-step explanation:

The information provided is:

$n_{1}=200,\ \bar x_{1}=22.7,\ s_{1} = 4.5\\n_{2}=200,\ \bar x_{2}=19.7,\ s_{2} = 4.3$

The (1 - <em>α</em>)% confidence interval for the difference between two mean is:

$CI=\bar x_{1}-\bar x_{2}\pm t_{\alpha/2, (n_{1}+n_[2}-2}\sqrt{\frac{s_{1}^{2}}{n_{1}}+\frac{s_{2}^{2}}{n_{2}} }$

The critical value of <em>t</em> is:

$\alpha /2=0.05/2=0.025$

degrees of freedom $=n_{1}+n_{2}-2=200+200-2=398$

$t_{\alpha/2, n_{1}+n_{2}-2}=t_{0.025, 398}=1.96$

Compute the 95% confidence interval for the difference between two mean as follows:

$CI=22.7-19.7\pm 1.96\sqrt{\frac{4.5^{2}}{200}+\frac{4.3^{2}}{200} }\\=3\pm0.8624\\=(2.1376, 3.8624)\\\approx(2.14, 3.86)$

Thus, the 95% confidence interval, (2.14, 3.86) implies that the true mean difference value is contained in this interval with probability 0.95.

Correct option is B.

The null value of the difference between means is 0.

As the value 0 is not in the interval this implies that there is a difference between the two means, concluding that priming does have an effect on scores.

Correct option is C.

4 0

3 years ago