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3 years ago

Given the distance between (x,1) and (-2,5) is 2 root 7, find the the value of x. Leave your answer in simplified exact form

Mathematics

1 answer:

Neporo4naja [7]3 years ago

8 0

Answer:

Step-by-step explanation:

Distance = the square root of (x2-x1)2 + (y2-y1)2Added:Distance Formula: Given the two points (x1, y1) and (x2, y2), the distance between these points is given by the formula:square root of x2-x1 squared +y2-y1 squared

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An 8- pound bag of apples costs $17.50.What is the unit price?

hammer [34]

To find the answer to this we will set up a proportion. Lets do it:-

$\frac{8}{17.50} = \frac{1}{x}$

Now we will cross multiply:-

7.50 · 1 = 17.50

Next we will divide:-

17.50 ÷ 8 = x

x = 2.18

So, $2.18 per pound of apples.

Hope I helped ya!!

3 0

3 years ago

Read 2 more answers

Solve the inequality<br> Z-2>2<br> Z > 2?

Troyanec [42]

Answer:

Z> 4

So Z> 2 is true

Step-by-step explanation:

Given that:

Z-2>2

Adding 2 on both sides

Z-2 + 2 >2 + 2

Z > 4

hence the equation Z > 2 is true

i hope it will help you!

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3 years ago

A recent survey showed that among 100 randomly selected college seniors, 20 plan to attend graduate school and 80 do not. determ

Temka [501]

The confidence interval would be (0.122, 0.278).

We first find our z-score. We want a 95% confidence interval:

0.95/2 = 0.475

Looking this up in the z-table, (http://www.statisticshowto.com/tables/z-table/) we see the z-score is 1.96.

The formula we will use is:

$p \pm z\sqrt{\frac{p(1-p)}{n}}$

In this problem, p = 20/100 = 0.2, and n=100:

$0.2 \pm 1.96\sqrt{\frac{(0.2)(0.8)}{100}}
\\
\\0.2\pm 0.0784
\\
\\(0.2-0.0784, 0.2+0.0784)
\\
\\(0.1216,0.2784)$

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4 years ago

Karl records the number of city blocks from his house to each of his friends houses. which statement is supported by the data?

Musya8 [376]

Answer:

Step-by-step explanation:

I think option 4 is the correct answer

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3 years ago

Enter <, >, or = to make the<br> statement true.<br> .320 [?] .051

koban [17]

Answer: .320 is greater than .051 (use the > sign)

Step-by-step explanation:

too lazy to explain, but yes

3 0

3 years ago