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blsea [12.9K]
2 years ago
10

Help me i dont really understand

Mathematics
1 answer:
xenn [34]2 years ago
3 0

Answer:

73

Step-by-step explanation:

12(6) + 1/4 • 2^2

Square the 2 first.

12(6) + 1/4 • 4

Then multiply from left to right.

72 + 1

Lastly, add.

73

The parenthesis around the 6 mean multiplication, not the Parenthesis that are grouping symbols if you are learning PEMDAS. So your question has no grouping symbol parenthesis. Next comes Exponents, that's why we squared the 2. Multiply and Divide come next IN THE ORDER THAT THEY APPEAR FROM LEFT TO RIGHT. Then the same method with adding and subtracting. That's called the order of operations.

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125 centimeters to 87.5 cenitimeters
Artemon [7]

Answer:

30

%

d

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r

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Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
What is arcsin(cos3/5)<br><br> Giving brainliest please help
quester [9]

Answer:

(cos(3°) / 5) = 0.201078184 radians

Step-by-step explanation:

8 0
2 years ago
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The distribution of the average amount of sleep per night gotten by college students is roughly bell-shaped with mean 412 minute
kirza4 [7]

Answer:

P(X

P(z

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the scores of a population, and for this case we know the distribution for X is given by:

X \sim N(412,68)  

Where \mu=412 and \sigma=68

We are interested on this probability

P(X

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(X

And we can find this probability using the normal standard table or excel and we got:

P(z

4 0
3 years ago
When 23 is subtracted from the square root of three times a number, the result is 16. find the number?
gizmo_the_mogwai [7]
(√3n)-23=16

Put all of the numbers without a variable on the right side of the equation
(√3n)=39

Simplify 
<span>1.732051n</span>=<span>39
</span>
Divide 39 by 1.732051
n=<span>22.516658

Round
n=22.5</span>
8 0
3 years ago
Select the correct vectors.
Paha777 [63]

In the case above, the correct vectors are:

  • <25.98, -15>.
  • <1.71, 4.7>.

<h3>What is the ship vector about?</h3>

The solution for the Ship's vector are:

Note that the Horizontal aspect = 30 cos 30  

                                                   = 25.98.

For the  Vertical aspect = 30 sin(-30)

                                        = -15.

Hence it will be  <25.98, -15>.

In regards to the current's vector:

The Horizontal aspect=  5 sin 20

                                       = 1.71.

The Vertical aspect = 5 cos 20

                                     = 4.7.

Hence it will be <1.71, 4.7>.

Therefore, In the case above, the correct vectors are:

  • <25.98, -15>.
  • <1.71, 4.7>.

Learn more about vectors from

brainly.com/question/23973576

#SPJ1

4 0
1 year ago
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