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3 years ago

What is an equation of the line that passes through the points -8,4 and -8,8

Mathematics

1 answer:

Vitek1552 [10]3 years ago

4 0

Answer:

8+8/-8-4

16/-12

4/-3

8=4/-3(-8)+b

8*3=12+b

24=12+b

12=b

y=-4/3+12

Step-by-step explanation:

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A car is traveling at a steady speed. It travels 2 1/3 miles in 3 1/2 minutes, how far will it travel in 32 minutes?

Mandarinka [93]

21 1/3 miles
Divide 32 by 3 1/2, and then multiply it by 2 1/3 to get this answer

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3 years ago

A scientist inoculates mice, one at a time, with a disease germ until he finds 3 that have contracted the disease. If the prob

UkoKoshka [18]

Answer:

The probability that 8 mice are required is 0.2428.

Step-by-step explanation:

Given : A scientist inoculates mice, one at a time, with a disease germ until he finds 3 that have contracted the disease. If the probability of contracting the disease is two sevenths.

To find : What is the probability that 8 mice are required? The probability that that 8 mice are required is nothing ?

Solution :

Applying binomial distribution,

$P(X=r)=^nC_r p^rq^{n-r}$

Where, p is the probability of success $p=\frac{2}{7}$

q is the probability of failure q=1-p, $q=1-\frac{2}{7}=\frac{5}{7}$

n is total number of trials n=8

r=3

Substitute the values,

$P(X=3)=^8C_3 (\frac{2}{7})^3 (\frac{5}{7})^{8-3}$

$P(X=3)=\frac{8!}{3!5!}\times \frac{8}{343}\times (\frac{5}{7})^{5}$

$P(X=3)=\frac{8\times 7\times 6}{3\times 2\times 1}\times \frac{8}{343}\times \frac{3125}{16807}$

$P(X=3)=0.2428$

Therefore, the probability that 8 mice are required is 0.2428.

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4 years ago

Enter the value of 3^3+4⋅(5^2−4^2).

Oduvanchick [21]

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3 years ago

Read 2 more answers

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Solnce55 [7]

Answer:

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Step-by-step explanation:

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which equals 169+b²=225 subtract 169 from both sides and we get b²=56

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3 years ago

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Crazy boy [7]

Answer:

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3 years ago