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V125BC [204]
3 years ago
7

Which set of lengths are the side lengths of a right triangle? (9,15,17) (14,23,25) (20,30,40) (15,36,39)

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
6 0

Answer:

(15, 36, 39)

Step-by-step explanation:

Using pythagoreas formula: A^2 * B^2 = C^2

so a=15, b=36, c=39

15^2+36^2=39^2

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A perpendicular bisector, CD is drawn through point C on AB. 
STALIN [3.7K]

<u>Answer</u>

B(18/5,0)


<u>Explanation</u>

First we find the coordinates of C;

C (x, y) = [(-3+7)/2, (2+6)/2]

           = (2, 4)

Find the equation of CD.

slope = (6-2)/(7--3)

         = 4/10  = 2/5

slope of CD = -5/2

-5/2 = (y - 4)/(x - 2)

-5/2(x - 2) = y - 4

(-5/2) x + 5 = y - 4

y = (-5/2)x + 9

For the x-intercept y = 0

∴ y = (-5/2)x + 9  

 0 = (-5/2)x + 9  

5/2 x = 9

x = 2/5 × 9

  = 18/5

x-intercept  = (18/5, 0)


3 0
3 years ago
Read 2 more answers
Lines k and n are perpendicular.if the slope of line k is -6,what is the slope of line n?
aleksley [76]

Answer:

1/6

Step-by-step explanation:

Well perpendicular lines are reciprocals of each other,

meaning if like k has a slope of -6 then line n will have a slope of positive 1/6.

<em>Thus,</em>

<em>line n has a slope of 1/6.</em>

<em />

<em>Hope this helps:)</em>

3 0
3 years ago
Read 2 more answers
What is the axis of symmetry for y = -x^2 –4 x – 5?Write your answer as an equation
eimsori [14]

Answer:

hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

7 0
3 years ago
I'll Give brainliest too! I need help with these.
Ann [662]

This is not seeing me clearly so that's why I can't able to help u.

3 0
3 years ago
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zahra earns $80 each day plus a 6% commission on her sale at an appliance store. on friday zahra has $900in sales.how much does
goldenfox [79]
<h3>Zara earned $ 134 on friday including commission</h3>

<em><u>Solution:</u></em>

Given that,

zahra earns $80 each day plus a 6% commission on her sale at an appliance store

zahra has $900 in sales

<em><u>Find the commission amount</u></em>

commission amount = 6 % of 900

commission\ amount = \frac{6}{100} \times 900\\\\commission\ amount = 54

Zara earnings including commission amount = 80 + 54 = 134

Thus Zara earned $ 134 on friday including commission

3 0
3 years ago
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