I need this algrba hw done by tonight! It’s easy 40 points!

1 answer:

8 0

Answer:

1) 21 2) 100 3) 36 4) 15 6) -4 7) 56

8) 52 9) -49 10) -2 11) 1.5 12) 81 13) -80 14) 7

15) -324 16) 625 17) 35 18) 31 19) 14 20) 1 21) 1.125

Step-by-step explanation:

You might be interested in

bezimeni [28]

Answer:

z would be your radius

Step-by-step explanation:

Equation: (x - h)² + (y - k)² = r²

Simply take √r² to find r, your radius.

7 0

3 years ago

Colt1911 [192]

Answer:

99.7% of customers have to wait between 8 minutes to 30 minutes for their food.

Step-by-step explanation:

We are given the following in the question:

Mean, μ = 18 minutes

Standard Deviation, σ = 4 minutes

We are given that the distribution of amount of time is a bell shaped distribution that is a normal distribution.

Empirical Formula:

Almost all the data lies within three standard deviation from the mean for a normally distributed data.
About 68% of data lies within one standard deviation from the mean.
About 95% of data lies within two standard deviations of the mean.
About 99.7% of data lies within three standard deviation of the mean.

Thus, 99.7% of the customers have to wait:

$\mu -3\sigma = 18-3(4) = 6\\\mu +3\sigma = 18+3(4) = 30$