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mestny [16]
2 years ago
6

Verify the -(-x) = x for x= -21/31​

Mathematics
1 answer:
aliina [53]2 years ago
6 0

Answer:

-3

Step-by-step explanation:

because of the root

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How would I do this? Solve for q. –10 + 10q = 9q
DerKrebs [107]

Answer:

q=10

Step-by-step explanation:

-10+10q=9q

-10=-q

q=10

4 0
3 years ago
Solve for u<br> 3u = 78<br> Simplify your answer as much as possible.
scZoUnD [109]
You simply divide 78 by 3, so the answer will be 26.
8 0
3 years ago
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The number of typing errors made by a typist has a Poisson distribution with an average of seven errors per page. If more than s
Aleks [24]

Answer:

0.599  is the probability that a randomly selected page does not need to be retyped.

Step-by-step explanation:

We are given the following in the question:

The number of typing errors made by a typist has a Poisson distribution.

\lambda  =7

The probability is given by:

P(X =k) = \displaystyle\frac{\lambda^k e^{-\lambda}}{k!}\\\\ \lambda \text{ is the mean of the distribution}

We have to find the probability that a  randomly selected page does not need to be retyped

P(less than or equal to 7 mistakes in a page)

P( x \leq 7) = P(x =1) + P(x=1) +...+ P(x=6) + P(x = 7)\\\\= \displaystyle\frac{7^0 e^{-7}}{0!} + \displaystyle\frac{7^1 e^{-7}}{1!} +...+ \displaystyle\frac{7^6 e^{-7}}{6!} + \displaystyle\frac{7^7 e^{-7}}{7!} \\\\= 0.59871\approx 0.599

Thus, 0.599  is the probability that a randomly selected page does not need to be retyped.

4 0
3 years ago
Can someone please explain to me how I'm supposed to solve 2x+y=12? Like step by step solving?
Ne4ueva [31]
Well, first put the function in slop-intercept form (y = mx + b). 2x + y = 12, y - 2x = 12 - 2x, y = -2x + 12. So y = -2x + 12 is the slope-intercept form. Then graph the function to solve for all possible solutions to the function. In y = mx + b, m is the slope and b is the y intercept. In y = -2x + 12, m equals -2, so the slope is -2, and b equals 12, so 12 is the y intercept. Make a point on the y intercept at y = 12. The slope is -2, or -2/1. The graph will be sloping downward. From the point at y = 12, move down two units and to the right one unit and make another point. Then from this new point move down two units and to the right one unit and make another point, and so on. Then to extend the graph in the other direction, start at the point y = 12 and move two units up and one unit to the right and make a point there. Then from this new point move two units up and one unit to the right and make another point there, and so on.
3 0
3 years ago
Please help solve this
notsponge [240]

Answer:

1/6

Step-by-step explanation:

so what you want to do first to create a common denominator:

1. multiply 2/3 by 2 to get a denominator of 6

2. Now you have 4/6, to solve for x you subtract 4/6 from the total

\frac{5}{6} - \frac{4}{6} = \frac{1}{6}

thats how you get your answer!

Hope this helped :)

5 0
3 years ago
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