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seraphim [82]
2 years ago
6

9a+4b+4(-4a+2b)-7 What the answer

Mathematics
1 answer:
Harman [31]2 years ago
3 0
My work to your question.

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What percent of 100 is 25? Show you work.
ANEK [815]
.25 its a quarter of 100!
4 0
3 years ago
Read 2 more answers
Determine the value of x for which a || b if m<30=80-x and m<7=90-2x.
abruzzese [7]
D. 10

m<3 = 80 - (10) = 70
m<7 = 90 - (20) = 70
8 0
2 years ago
The scheduled arrival time for a daily flight from Boston to New York is 9:35 am. Historical data show that the arrival time fol
Lady_Fox [76]

Answer:

The mean is 11.5 minutes and the standard deviation is of 6.64 minutes

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 is:

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

The standard deviation is:

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

Arrival time of 9:18 am and a late arrival time of 9:41 am.

9:41 is 23 minutes from 9:18. So the time is uniformily distributed between 0 and 23 minutes, so a = 0, b = 23.

Mean:

M = \frac{a+b}{2} = \frac{0+23}{2} = 11.5

Standard deviation:

S = \sqrt{\frac{(b-a)^{2}}{12}} = \sqrt{\frac{(23 - 0)^{2}}{12}} = 6.64

The mean is 11.5 minutes and the standard deviation is of 6.64 minutes

8 0
2 years ago
bills father bought a clothes dryer for $240, if he paid $60, cash and arranged to pay off the reminder in 6 equal payments, wha
Ostrovityanka [42]

The answer is $30.

$240 - $60 = $180

$180 / 6 = $30

5 0
3 years ago
Read 2 more answers
4n + 1= 25 how do I solve this and show my work?​
Ipatiy [6.2K]

Answer:

n=6

Step-by-step explanation:

4n + 1= 25

Move constant to the right

4n=25-1

Calculate

4n=25-1

Then divide on both sides

6 0
2 years ago
Read 2 more answers
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