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Drupady [299]
3 years ago
5

Lucy started to run on a treadmill after setting its timer for 77 minutes. The display says that she has finished 79% of her run

. How many minutes have gone by? Round your answer to the nearest tenth.
Mathematics
1 answer:
max2010maxim [7]3 years ago
8 0

Answer:

60.8

Step-by-step explanation:

Step 1: Go on g oogle

Step 2: Type "79% of 77"

Step 3: Round your answer 60.83 to 60.8 because it said round to the nearest tenth.

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svetlana [45]

Answer:

its b

Step-by-step explanation:

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3 years ago
Which of the following is the graph of the quadratic function y=x^2-6x-16
stepladder [879]

Answer:

this is the graph to the equation :) hope this helps in all ways possible:)

Step-by-step explanation:

5 0
3 years ago
The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 330 grams and a standard deviati
just olya [345]

Answer:

Weights of at least 340.1 are in the highest 20%.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 330, \sigma = 12

a. Highest 20 percent

At least X

100-20 = 80

So X is the 80th percentile, which is X when Z has a pvalue of 0.8. So X when Z = 0.842.

Z = \frac{X - \mu}{\sigma}

0.842 = \frac{X - 330}{12}

X - 330 = 12*0.842

X = 340.1

Weights of at least 340.1 are in the highest 20%.

3 0
3 years ago
I got the answer nevermind
german

Okay good job my dood

5 0
3 years ago
Write 1/5 as a terminating decimal
borishaifa [10]

Answer: The answer is 0.2

Step-by-step explanation:

1 divided by 5 is 0.2 because 1 goes into 5 0.2 times.

Hope this helps!

5 0
3 years ago
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