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2 years ago

What is the distance between point C (-4,-6)and point D(1,6)

Mathematics

1 answer:

-BARSIC- [3]2 years ago

8 0

Answer:

the distance between the CD points is 5

Step-by-step explanation:

(-4,-6) (1,6)

it takes 4 to get from -4 to 0 plus 1 to get to 1

so 4+1=5

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The point (4/3,0) is a solution of 3x-y>4 <br> True or false ?

Strike441 [17]

Answer:

false

Step-by-step explanation:

let the point (x,y) be (4/3,0)

3*(4/3)-0>4

4>4 false

7 0

4 years ago

Kari thinks, "x is the difference between 87 and 34.25 is this true or not?

Pavlova-9 [17]

This is true because it is an unknown number so it is replaced by a variable.

4 0

3 years ago

A machine that manufactures automobile pistons is estimated to produce a defective piston 1% of the time. Suppose that this esti

GenaCL600 [577]

Answer:

Mean: 0.9 pistons

Standard deviation: 0.944 pistons

Step-by-step explanation:

Either a piston is defective, or it is not. This means that for either piston, there can only be two outcomes. This means that we can solve this problem by the binomial distribution.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and each trial can only have two outcomes, with probabilities $\pi$ and $1 - \pi$ .

For an experiment with n repeated trials and a probability of success $\pi$ , we have that:

The mean is: $\mu_{x} = n*\pi$

The standard deviation is: $\sigma_{x} = \sqrt{n*\pi*(1-\pi)}$

In this problem

There are 90 pistons, so $n = 90$ .

There is a 1% probability that a piston is defective, so $\pi = 0.01$ .

Estimate the number of pistons in the sample that are defective by giving the mean of the relevant distribution:

$\mu_{x} = n*\pi = 90(0.01) = 0.9$

Quantify the uncertainty of your estimate by giving the standard deviation of the distribution.

$\sigma_{x} = \sqrt{n*\pi*(1-\pi)} = 0.944$

6 0

3 years ago

A city has a population of 370,000 people. Suppose that each year the population grows by 6.5%. What will the population be afte

Flauer [41]

Answer:

I think the answer is 787765.609372 which rounds to 787766.

I hope this helped

8 0

2 years ago

Read 2 more answers

A hiker is walking down a mountain. She walked 5,978 feet in 17 minutes. In that time, she descended 1,024 feet from the top

Karo-lina-s [1.5K]

First walk=descend of 1024 feet in 17 minutes
second walk=descend of 500 feet in 7 minutes

so in total she descended 1024+500=1524 feet in 7+17=24 minutes
as an average rate this equals 1524/24=63.5 feet/minute descended
or an average rate of -63.5 feet/minute in altitude (note the minus)

5 0

3 years ago