All categories

2 years ago

Find the value of cos[cos^-1(sqrt 2/2)-n/2]

Mathematics

2 answers:

Dmitrij [34]2 years ago

8 0

Answer:

I highly think it's D. $\frac{\sqrt{2} }{2}$

Step-by-step explanation:

SCORPION-xisa [38]2 years ago

4 0

Answer:

Closest choice would be D.

Step-by-step explanation:

You might be interested in

How do you do elimination in systems of equations?

VMariaS [17]

Well, for solving system of equations, we can use either substitution where we plug one equation into the other, or elimination where we combine the equations.

- Using elimination, you would to eliminate one variable from both equations, so you automatically would get one equation with one variable!

4 0

2 years ago

Divide 48 in the ratio 3 : 6:7

Marina CMI [18]

Answer:

$48 \times \frac{3}{16} \\ 9$

$48 \times \frac{6}{16} \\ 18$

$48 \times \frac{7}{16} \\ 21$

9:18:21

7 0

2 years ago

Read 2 more answers

Y=x+2 4x+3y= -36 system of equation

Free_Kalibri [48]

Answer:

(-6, -4)

Step-by-step explanation:

Use substitution.

Since y is already isolated, substitute it into the y of: 4x+3y=-36.

You should get: 4x+3(x+2)=-36

Simplify this and you'll get:

4x+3x+6=-36

Add both of the variables:

7x+6=-36

Add -6 to both sides, (because there is a -36 on one side, and a 6 on the other, you have to add a negative to eliminate the 6 whilst adding to the -36)

7x=-42

Divide both sides by 7:

x=-6

Now substitute this into y=x+2

y=-6+2

y=-4

4 0

3 years ago

Read 2 more answers

What is the relationship between 962 meters and 0.962 kilometers

dem82 [27]

1 meter is equal to 0.001 kilometers so if we multiply 962 by 0.001 we would get .962 kilometers...so with that said what would the relationship be?

8 0

3 years ago

olice response time to an emergency call is the difference between the time the call is first received by the dispatcher and the

yan [13]

Answer:

0.7823 = 78.23% probability that the response time is between 3 and 9 minutes.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean of 7.2 minutes and a standard deviation of 2.1 minutes.

This means that $\mu = 7.2, \sigma = 2.1$