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Zina [86]
3 years ago
15

The weight of tigers follow a normal distribution with a mean of 220 kg and a SD of 30 kg. 1) If we randomly select a tiger, wha

t is the probability that his weights is less than 258 kg
Mathematics
1 answer:
mylen [45]3 years ago
6 0

Answer:

0.89736

Step-by-step explanation:

We solve this question using z score formula

Z score = x - μ/σ

x = raw score

μ = population mean

σ = population standard deviation

Hence,

x = 258, μ = 220, σ = 30

Z = 258 - 220/30

=1.26667

Probability value from Z-Table:

P(x<258) = 0.89736

Therefore, the probability that his weights is less than 258 kg is 0.89736

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Ten people can dig 2 acres of land in 7 days. How long will 8 people working at half the rate of the first group take to dig 6 a
Fiesta28 [93]

Answer:

52.5 days

Step-by-step explanation:

Ten people can dig 2 acres in 7 days.

One person can dig 0.2 acres in 7 days.

Working at half the rate, one person can dig 0.1 acre in 7 days.

8 people can dig 0.8 acres in 7 days.

8 people can dig 6/0.8 * 0.8 acres in 6/0.8 * 7 days.

8 people can dig 6 acres in 52.5 days

5 0
3 years ago
What is the slope of the line that passes through the points (10,5)and (15,20)
kupik [55]

Answer:

<h2>The answer is 3</h2>

Step-by-step explanation:

The slope of a line given two points can be found by using the formula

m =  \frac{ y_2 - y _ 1}{x_ 2 - x_ 1}  \\

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

(10,5)and (15,20)

The slope is

m =  \frac{20 - 5}{15 - 10}   =  \frac{15}{5}  = 3 \\

We have the final answer as

<h2>3</h2>

Hope this helps you

8 0
3 years ago
the amount of time it takes to finish a race might be a function of which of the following A. the distance of the race B. the nu
Oksi-84 [34.3K]

Answer:

A

Step-by-step explanation:

this is a because the number of people does not involve the amount of time and the entry fee is just out of the question but the distance is going to affect the speed of the fish and that will affect the time

5 0
3 years ago
Read 2 more answers
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Answer:

Sarah multiplied the denominator by the denominator and the numerator by the numerator instead of finding the cross products. The equation should be 5x = 42, so the cost should be $8.40.

Step-by-step explanation:

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4 0
3 years ago
Plzz help me with this question.
salantis [7]
I think it’s -4, i may be wrong. i plugged in the -1 for x
6 0
3 years ago
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