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den301095 [7]
4 years ago
7

Which equation correctly shows how to determine the distance between the points (9,-2) and (6.3) on a coordinate grid?

Mathematics
1 answer:
Nastasia [14]4 years ago
7 0

Answer:

d = \sqrt{(6 - 9)^{2}+ (3 - (-2))^{2} }

Step-by-step explanation:

The distance formula is d= \sqrt{(x_{2} - x_{1})^{2} + (y_{2} - y_{1})^{2}     }.

6 is x_{2}, 9 is x_{1}, 3 is y_{2}, and -2 is y_{1}.

When you plug these into the formula, you get d = \sqrt{(6 - 9)^{2}+ (3 - (-2))^{2} }

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melanie has 137 dollars to spend on 17 books. After buying them she had 11 dollars. How much did each book cost?
KIM [24]

Melanie has 137 dollars in total.

Let each book cost=x

No of books=17

So total cost of 17 books=17x

After buying books Melanie left with 11 dollars

According to question the required equation will be=

17x+11=137

17x=137-11=126

x=8

i.e Price of each book is 8 dollars. (Answer)

4 0
3 years ago
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Please provide explanation + answer :((((( im crying
Vladimir79 [104]

Answer:

1. Given

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6 0
3 years ago
The value of y when x=2
Igoryamba

Answer:

Step-by-step explanation:

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7 0
3 years ago
I need help but I need the correct answer everyone is giving me the wrong answer !!
Jlenok [28]

Answer:

y - 2 = 6 (x - 1)

Step-by-step explanation:

Slope intercept form equations look like this:

y - y1 = m (x - x1)

***m = \frac{y2-y1}{x2-x1}

Using the point (1,2), we know that x1 = 1 and y1 = 2. Let's sub these values into the slope intercept equation:

y - 2 = m (x - 1)

To complete this equation, we need to find slope. Pick out another point on the graph and plug into the slope equation. We can use point (2,8), where (1,2) = Point 1 and (2,8) = Point 2.

\frac{y2-y1}{x2-x1}=\frac{8-2}{2-1} =\frac{6}{1} =6

Now that we know m = 6, let's plug that back into the original equation to get our final answer:

<u>y - 2 = 6 (x - 1)  </u>          

I hope this helps!

6 0
2 years ago
The square root of the quotient of a number and 6 is 9. What is this number?
VARVARA [1.3K]
First, square both sides of equation so it ends up to be:
a/6=81
so 
a=27/2
4 0
4 years ago
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