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irina [24]
4 years ago
11

14.  

Mathematics
1 answer:
Tpy6a [65]4 years ago
5 0
Its C. 113 ft because the height and the perimider of the trinagle
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How do you find the equation that is perpendicular to 2x-5y=20, passing through the point (7,-8)?
IrinaK [193]
To find a perpendicular line you first need to see the equation in slope intercept form. To do that you need to solve for y. 

2x - 5y = 20 ---> subtract 2x from both sides
-5y = -2x + 20 ---> divide by -5
y = 2/5x - 4

Now that you have this, note that a perpendicular line has opposite and reciprocal slope. Since the slope in our equation is 2/5, that means the new line will have -5/2 slope. So we use the point given and the slope to find the y intercept. 

y = mx + b
-8 = -5/2(7) + b ---> multiply
-8 = -35/2 + b ---> add 35/2 to both sides
19/2 = b

Now use our new slope and new y intercept to write the new equation. 

y = -5/2x + 19/2
8 0
3 years ago
I rlly need helpppp
Anit [1.1K]
???? more info needed
5 0
3 years ago
Factor 2x2 − 4x − 30 completely. (5 points) 2(x − 5)(x + 3) 2(x − 3)(x + 5) (2x + 3)(x − 5) (2x − 5)(x + 3)
balandron [24]

Answer:

The answer is

<h2>2( x + 3)(x - 5)</h2>

Step-by-step explanation:

To factor the expression

2x² - 4x - 30

<u>First factor 2 out of the expression</u>

That's

2( x² - 2x - 15)

<u>Next write - 2x as a difference</u>

2( x² + 3x - 5x - 15)

<u>Factor out x from the expression</u>

That's

2 [ x( x + 3) - 5x - 15 ]

<u>Factor out </u><u>-</u><u>5 from the expression</u>

2 [ x ( x + 3) - 5( x + 3) ]

<u>Factor out x+3 from the expression</u>

We have the final answer as

<h3>2( x + 3)(x - 5)</h3>

Hope this helps you

4 0
3 years ago
You bought a $7.00 meal and 3 cookies. You spent a total of $10.00. How much did each cookie cost?​
nadya68 [22]

Answer:

A dollar

Step-by-step explanation:

7+3 is 10

3 divided by 1 is 3

3 0
3 years ago
Read 2 more answers
Drag each tile to the correct box. Not all tiles will be used
Anni [7]

Acceleration: a=\frac{2(vt-s)}{t^2}

Step-by-step explanation:

For an object in uniformly accelerated motion, we can use the so-called SUVAT equations.

One of them is:

s=vt-\frac{1}{2}at^2

where

s is the displacement

v is the final velocity

t is the time

a is the acceleration

Here we want to re-arrange the equation to find the acceleration. We start by adding -vt on both sides of the equation:

s-vt=-\frac{1}{2}at^2

Now we change sign on both sides:

\frac{1}{2}at^2=vt-s

And finally we multiply by 2 and divide by t^2 on both sides, so we get:

a=\frac{2(vt-s)}{t^2}

Learn more about accelerated motion:

brainly.com/question/9527152

brainly.com/question/11181826

brainly.com/question/2506873

brainly.com/question/2562700

#LearnwithBrainly

4 0
4 years ago
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