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Law Incorporation [45]
3 years ago
9

When you are doing math homework do u need to show your work for every problem?

Mathematics
2 answers:
Alex17521 [72]3 years ago
6 0

Yes, it is very important otherwise some teachers may count the problem wrong.


Y_Kistochka [10]3 years ago
3 0
If the question is only fill in the blank kind, then, no.
But for the word problems and calculation questions, you usually need to show your work. hope that helps :)
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Function or not a function?
Taya2010 [7]

Answer:Function

Step-by-step explanation:Because each x variable is pointing to a diffrent range

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3 years ago
The height of a triangle is 7m less than it’s base the area of the triangle is 30m^2 what is the length of the base what is the
Ksju [112]
If you know the base and area of the triangle, you can divide the base by 2, then divide that by the area to find the height. To find the height of an equilateral triangle, use the Pythagorean Theorem, a^2 + b^2 = c^2.
3 0
3 years ago
Suppose that lithium calculator battery with a charge of 3 volts, actually has a voltage with uniform distribution between 2.93
Dmitrij [34]

Answer:

b. E(X) = 3.015, STDEV(X)= 0.049, P (X ≤ 2.98) = 0.2941

Step-by-step explanation:

An uniform probability is a case of probability in which each outcome is equally as likely.

For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.

The mean of the uniform probability distribution is:

M = \frac{a + b}{2}

The standard deviation of the uniform distribution is:

S = \sqrt{\frac{(b-a)^{2}}{12}}

The probability that we find a value X lower than x is given by the following formula.

P(X \leq x) = \frac{x - a}{b-a}

Uniform distribution between 2.93 and 3.1 volts

This means that a = 2.93, b = 3.1. So

Mean:

M = \frac{2.93 + 3.1}{2} = 3.015

Standard deviation:

S = \sqrt{\frac{(3.1 - 2.93)^{2}}{12}} = 0.049

What is the probability that a battery has a voltage less than 2.98?

P(X \leq 2.98) = \frac{2.98 - 2.93}{3.1 - 2.93} = 0.2941

So the correct answer is:

b. E(X) = 3.015, STDEV(X)= 0.049, P (X ≤ 2.98) = 0.2941

6 0
3 years ago
HELPPPPPPP. Marie has two boxes of colored markers. Each box contains 3 markers. In
REY [17]

Answer: 16.6% percent chance she will pull out a blue or orange marker.

Hope this helps! :)

4 0
2 years ago
SOMEONE PLEASE HELP ME ASAP PLEASEEE!!!​
JulsSmile [24]

Answer:

m-9

Step-by-step explanation:

12-9= 3

14-9= 5

18-9= 9

27-9= 18

4 0
3 years ago
Read 2 more answers
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