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user100 [1]
3 years ago
15

Bert decided to start exercising. The first day he jogged for 25 minutes. The next day he wanted to jog for 4 minutes more than

the previous day. He wanted to continue increasing by the same amount like this for every one of the 30 days in April.
Write an explicit formula to find the number of minutes that Bert ran on any day in April.
Mathematics
1 answer:
vova2212 [387]3 years ago
8 0
25 + 4x where x equals the number of days
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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
How do you vibe check
ziro4ka [17]

Answer:

good question.... maybe by the way a person acts

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
twice the sum of a number and 2 is equal to three times the difference of the number and 3. Find the number
Lana71 [14]
2(x+2)=3(x-3)
2x+4=3x-9
2x=3x-13
-x=-13
x=13

The number is 13
3 0
3 years ago
The _____ in the hundreds place has a value ____ times as great as the _____ in the _____ place. 440
solong [7]

Answer:

The 4 in the hundreds place has a value 10 times as great as the 4 in the tens place.

Step-by-step explanation:

440 = 400 + 40 + 0

the hundreds place is worth 400 here

it is worth 10x the tens place (40 here)

5 0
3 years ago
Anyone know this one?
vodomira [7]

Answer:

yes

Step-by-step explanation:

draw 4 colors red..............your trun.............

5 0
3 years ago
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