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2 years ago

Find the distance between the two points rounding to the nearest tenth (if necessary),

Mathematics

2 answers:

IRINA_888 [86]2 years ago

8 0

Answer: 13

Step-by-step explanation:

The distance formula between two points is:

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

Our points are as follows -

$x_2 = 0, x_1 = 5\\y_2 = 8, y_1 = -4$

If we plug them in:

$c = \sqrt{(0 - 5)^2 + (8 - (-4))^2}$

All we need to do now is simplify

$c = \sqrt{(-5)^2 + (12)^2}$

$c = \sqrt{25 + 144}$

$c = \sqrt{169} = 13$

Nastasia [14]2 years ago

3 0

Answer:

Step-by-step explanation:

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5 ( n - 7 ) = 2 ( n + 14 )

wariber [46]

Answer:

n=21

Step-by-step explanation:

We must find n.

Remember PEMDAS. First we must do the Parentheses. Lets do distributive property by multiplying a number that is immediately outside the parentheses with each number inside the parentheses. Lets do this one side at a time.

First lets do 5(n - 7). We get 5n - 35

Now 2(n + 14) is 2n + 28

Okay...... now we have $5n-35=2n+28$

Now lets do OPPOSITES!!!! We must do the opposite of each thing to both sides.

The opposite of -35 is positive 35. Lets add 35 to both sides. We get:

$5n=2n+63$

Now lets do the opposite of 2n which is -2n

$3n=63$

this is looking quite nice isnt it..........

The opposite of 3 times n is 3 DIVIDED BY n. So lets divide both sides by 3

$n=21$

amazing.......

8 0

2 years ago

Read 2 more answers

A polling organization asked a nation-wide random sample of 1600 new brides (those who got married in the past 2 years) the foll

iren [92.7K]

Answer:

It has millions of tickets. On each ticket is written a number a dollar amount. The exact average and SD are unknown but are estimated from the sample to be $20,000 and $5,000 respectively.

Step-by-step explanation:

Given that:

sample size n = 1600

sample mean $\overline x$ = 20000

standard deviation = 5000

The objective is to choose from the given option about what most closely resembles the relevant box model.

The correct answer is:

It has millions of tickets. On each ticket is written a number a dollar amount. The exact average and SD are unknown but are estimated from the sample to be $20,000 and $5,000 respectively.

However, if draws are made without replacement, the best estimate of the average amount for the bride will be $20,000

Similarly, the standard error for the sample mean = $\dfrac{s}{\sqrt{n}}$