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3 years ago

Helppp plzzz solve them

Mathematics

1 answer:

Airida [17]3 years ago

5 0

2. y=12000(.06)4x<span>
3. y=300(.08)5x
Hope this helps</span>

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kevin and some college friends are hiking on a trail that is 70 feet above sea level they hike into a canyon that is about 14 fe

Fiesta28 [93]

84 feet because you would just add the 70 and 14 together

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3 years ago

Assume that 13% of people are left-handed. If we select 10 people at random, answer the following questions:

Anastasy [175]

Answer:

0.099, 0.969,0.87,8.3.1.063

Step-by-step explanation:

Let X be the left handed people in the sample of 10 people selected.

X is binomial with n=10 and p = 0.13

a) the probability that there are exactly 3 lefties in the group

= $P(x=3) = 10C3 (0.13)^3 (0.87)^7\\= 0.09945\\=0.099$

b) the probability that there are at least 3 lefties in the group

= $P(X\geq 3) =0.9687\\=0.969$

Now Y number of right handers is binomial with n =10 and p = 0.87

c) the expected number of right-handers in the group.

$=E(Y) = np\\= 10(0.83)\\=8.3$

d) the standard deviation of the number of right-handers in the group

= $\sigma Y = \sqrt{npq} \\=1.063485\\=1.063$

5 0

3 years ago

1 2 3 4 5 6 7 8 9 10

Ksju [112]

In a linear functions, f(x)=mx+b, your y-intercept is b. So any function that is any number times x plus 3 is going to give you a y intercept of 3.

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4 years ago

Find the point estimate of the proportion of people who wear hearing aids if, in a random sample of 855 people, 47 people had he

Mrrafil [7]

<span>The point estimate of the proportion of people who wear hearing aids if, in a random sample of 855 people, 47 people had hearing aids is , p=47/855 p= 0.054 thus the point of estimation p= 0.054</span>

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3 years ago

What is the length of the line segment with end points (5, -7) and (5, 11)

Law Incorporation [45]

Answer:

Step-by-step explanation:

The formula of a distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

We have the points (5, -7) and (5, 11). Substitute:

$d=\sqrt{(5-5)^2+(11-(-7))^2}=\sqrt{0^2+18^2}=\sqrt{18^2}=18$

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3 years ago