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34kurt
3 years ago
7

What ratio is equivalent to 80:88

Mathematics
2 answers:
Maksim231197 [3]3 years ago
6 0

Answer:

40:44

20:22

10:11

Step-by-step explanation:

bazaltina [42]3 years ago
3 0

Answer:

5040 : 5544

Step-by-step explanation:

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-6x+7y=36 pls answer this
Andrei [34K]

Answer:

It’salreafu answers ??

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Laboratory experiment shows that the life of the average butterfly is normally distributed with a mean of 18.8 days and a standa
Leto [7]

Answer:

41.64% probability that a butterfly will live between 12.04 and 18.38 days.

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 = 18.8, \sigma = 2

Find the probability that a butterfly will live between 12.04 and 18.38 days.

This is the pvalue of Z when X = 18.38 subtracted by the pvalue of Z when X = 12.04. So

X = 18.38

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

Z = \frac{18.38 - 18.8}{2}

Z = -0.21

Z = -0.21 has a pvalue of 0.4168

X = 12.04

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

Z = \frac{12.04 - 18.8}{2}

Z = -3.38

Z = -3.38 has a pvalue of 0.0004

0.4168 - 0.0004 = 0.4164

41.64% probability that a butterfly will live between 12.04 and 18.38 days.

7 0
3 years ago
Find the value of 30^3+20^3-50^3
bearhunter [10]

Answer:

-90000

Step-by-step explanation:

30^3=30*30*30=27000

20^3=20*20*20=8000

50^3=50*50*50=125000

------------------------

27000+8000-125000

35000-125000

-90000

3 0
2 years ago
Abdul has a job transporting soft drinks by truck. his truck is filled with cans that weigh 14 ounces each and bottles that weig
Valentin [98]
If x is the number of cans, 870-x is the number of bottles

The weight of 1 can is 14oz, the weight of x cans is 14x
The weight of 1 bottle is 70oz, the weight of 870-x bottles is 70(870-x)

The weight in total is 14x+70(870-x)
5 0
3 years ago
If , which equation describes the graphed function? A. y = f(-x) − 3 B. y = -f(x) + 3 C. y = -f(x) – 3 D. y = f(-x) + 3
rewona [7]

Answer:

y=-f(x)-3

Step-by-step explanation:

when f is negative it is reflected over the x-axis and -3 means to translate 3 units down

3 0
2 years ago
Read 2 more answers
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