English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

one leg of the triangle is 14 feet longer than the other leg. find the lengths of the legs of the triangle

2006-08-11 05:25:39 · 11 answers · asked by corey c 1 in Science & Mathematics Mathematics

11 answers

Ah you just need to know how to set this question up.

Remember A^2 + B^2 =C^2

So use X as the length of one of the unknown sides.

X^2 + (x +14)^2 = 26^2

so you end up with 2x^2 +196 = 676

then solve it out

Hope that helps!

2006-08-11 05:31:26 · answer #1 · answered by misswolfish 2 · 1 1

Given: c = 26 feet, hypotenuse of a acceptable triangle a = x, length of one leg b = x + 14, length of the different leg discover: lengths of the legs answer: utilizing the Pythagorean Theorem: c^2 = a^2 + b^2 (26)^2 = x^2 + (x + 14)^2 676 = x^2 + x^2 + 28x + 196 x^2 + x^2 + 28x + 196 = 676 2x^2 + 28x + 196 - 676 = 0 2x^2 + 28x - 480 = 0 Divide with the help of two both left and acceptable of the equations.... x^2 + 14x - 240 = 0 Factoring: (x + 24)(x - 10) = 0 Equate each binomial aspect to 0.... x + 24 = 0 x = -24 overlook this answer because it truly is detrimental. x - 10 = 0 x = 10 ANS the different leg is, x + 14 = 10 + 14 = 24 ANS teddyboy

2016-11-24 20:14:28 · answer #2 · answered by ? 4 · 0 0

Let x= length of the smaller side of a triagle and
x+14= lengh ofthe other side of a trianle
It is given that the hypotenuse of a right triangle is= 26
Using pythogorian theorm
c^2=a^2 + b^2
(26)^2= (x)^2 + (x+14)^2
676 = x^2 +x^2 +28x+ 196
2x^2 +28x+ 196 -676 =0
2 (x^2 +14x- 240) =0
on factoring (x^2 +14x- 240) =0 we get
(x+24) (x-10) =0
Therefore x= -24 and x=10
Neglect the negative sign, because lenth cannot be negative
Therefore x=10 is the answer
Hence one side is 10 unit and the other side will be 10+14=24units

2006-08-11 11:14:43 · answer #3 · answered by Amar Soni 7 · 0 0

Let x be the length of the short leg. Then the long leg is x+14 and (from Pythagoreas Theorem)

x² + (x+14)² = 26² so that

2x² + 28x -480 = 0

(2x - 20)*(x + 24) = 0 So

x = 10 and x = -24 are solutions

Negative length is an extraenous root, so the lengths of the sides are 10 ft. and 24 ft.


Doug

2006-08-11 05:33:35 · answer #4 · answered by doug_donaghue 7 · 0 1

We have a right triangle which must form a pythagorean triplet as follows

(x,x+14,26)

So that 26^2 = x^2 + (x+14)^2

676 = x^2 + x^2 + 28x + 196

2x^2 + 28x -480 = 0

x^2 + 14x - 240 = 0

Factoring we get

(x + 24)(x-10) = 0

Which means our sides must be 10 and 24

x = -24 is not a valid solution since a length can not be negative

The the triplet is (10,24,26)

2006-08-11 05:32:32 · answer #5 · answered by Anonymous · 0 1

a = b + 14
c = 26

If this is a right triangle, then

a^2 + b^2 = c^2
(b + 14)^2 + b^2 = 26^2
((b + 14)(b + 14)) + b^2 = 676
(b^2 + 14b + 14b + 196) + b^2 = 676
b^2 + 28b + 196 + b^2 = 676
2b^2 + 28b + 196 = 676
2b^2 + 28b - 480 = 0
2(b^2 + 14b - 240) = 0
b^2 + 14b - 240 = 0

x = (-b ± sqrt(b^2 - 4ac))/(2a)

x = (-14 ± sqrt(14^2 - 4(1)(-240)))/(2(1))
x = (-14 ± sqrt(196 + 960))/2
x = (-14 ± sqrt(1156))/2
x = (-14 ± 34)/2
x = (-56/2) or (20/2)
x = -28 or 10

b = 10

a = 10 + 14 = 24

ANS : 24ft and 10ft

2006-08-11 12:55:12 · answer #6 · answered by Sherman81 6 · 0 0

(leg1)^2 + (leg2)^2 = (hypotenuse)^2
or
a^2 + b^2 = c^2

leg1 = leg2 + 14 feet
or
a = b + 14

(b + 14)^2 + b^2 = 26^2
b^2 + 28b + 196 + b^2 = 676
2b^2 + 28b - 480 = 0
2(b^2 + 14b - 240) = 0
b^2 + 14b - 240 = 0

b = [-14 +/- sqrt( (14^2) - (4)(1)(-240)) ] / 2
b = [-14 +/- sqrt( (196 + 960) ] / 2
b = [-14 +/- 34 ] / 2
b = -24 or 10 feet

Since length cannot be negative, b = 10 feet

leg 2 = 10 feet
leg 1 = 24 feet

2006-08-11 12:36:42 · answer #7 · answered by Anonymous · 0 0

x^2 + (x + 14)^2 = 26^2
x^2 + x^2 + 28x + 196 = 676
2x^2 + 28x = 480
x^2 + 14x = 240
x^2 + 14x + 49 = 240 + 49 = 289
(x + 7)^2 = sqrt(289) = +/-17
x = 17 - 7 = 10

Check:
10^2 + 24^2 = 100 + 576 = 676 = 26^2

2006-08-11 05:43:51 · answer #8 · answered by bpiguy 7 · 0 1

the legs are 10 ft and 24 ft as 24^2+10^6=26^2

2006-08-11 05:42:02 · answer #9 · answered by raj 7 · 0 1

x^2 + (x+14)^2 = 26^2

2x^2 + 28x -480 = 0

2( x^2 + 14x -240) = 0

10 and 24 are the answers

2006-08-11 05:32:31 · answer #10 · answered by Anonymous · 1 0

fedest.com, questions and answers