1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
gtnhenbr [62]
3 years ago
15

Do you hypotenuse of a triangle is 1 foot more than twice the length of the shorter leg the longer leg is 7 feet longer than the

shorter leg find the dimensions of the triangle
Mathematics
1 answer:
Lera25 [3.4K]3 years ago
6 0

Answer:

Shorter leg: 8 units

Longer leg: 15 units

Hypotenuse: 17 units

Step-by-step explanation:

We are given h=1+2s where h is the hypotenuse and s is the length of the shorter leg.

We got this equation from reading that the "hypotenuse of a triangle is 1 foot more than twice the length of the shorter leg". I replaced the "hypotenuse of a triangle" with h, "is" with =, "1 foot more than" with 1+ and finally "twice the length of the shorter leg" with 2s.

We also have "longer leg is 7 feet longer than the shorter leg".

I'm going to replace "longer leg" with L.

I'm going to replace "is" with =.

I'm going to replace "7 feet longer than the shorter leg" with 7+s.

So we have the equation L=7+s.

So we have a right triangle since something there is a side being referred to as the hypotenuse. We can use Pythagorean Theorem to find a relation between all these sides.

So by Pythagorean Theorem, we have: s^2+L^2=h^2.

Let's make some substitutions from above:

s^2+(7+s)^2=(1+2s)^2

Let's expand the powers using:

(a+b)^2=a^2+2ab+b^2

Applying this now:

s^2+(49+2(7)s+s^2)=(1+2(1)(2s)+(2s)^2)

s^2+49+14s+s^2=1+4s+4s^2

Combine like terms on right hand side:

2s^2+49+14s=1+4s+4s^2

Subtract everything on left hand side to get 0 on that side:

0=(1-49)+(4s-14s)+(4s^2-2s^2)

Simplify:

0=(-48)+(-10s)+(2s^2)

Reorder into standard form for a quadratic:

0=2s^2-10s-48

Every term is even and therefore divisible by 2. I will divide both sides by 2:

0=s^2-5s-24

I'm going to see if this is factoroable.

We need to see if we can come up with two numbers that multiply -24 and add up to be -5.

Those numbers are -8 and 3.

So the factored form is:

0=(s-8)(s+3)

This implies that either s-8=0 os s+3=0.

The first equation can be solved by adding 8 on both sides: s=8.

The second equation can be solved by subtracting 3 on both sides: s=-3.

The only solution that makes sense for s is 8 since it can't the shorter length cannot be a negative number.

s=8

L=7+s=7+8=15

h=1+2s=1+2(8)=1+16=17

So the dimensions of the right triangle are:

Shorter leg: 8 units

Longer leg: 15 units

Hypotenuse: 17 units

You might be interested in
What is -1 = 5/8b + 3/8
andrew-mc [135]

Answer:

exact form - b = -11/5

decimal form - b = -2.2

Mixed number form - b = -2 1/5

4 0
3 years ago
Susie's bank account balance for January was -$100,$300,$475,-$200,-$250, and $500. What is the range of Susie's bank account ba
Vadim26 [7]

Answer: I think the answer might be 225 but I'm not sure I'm 100% percent correct

8 0
2 years ago
Read 2 more answers
Find the area please!!!!
Murrr4er [49]

Answer:

244

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Apply the distributive property and then combine like terms to write an equivalent expression
Norma-Jean [14]

x + 7(x + 1)

7x + 7

x + 7x + 7

8x + 7

x + 7(x + 1) = 8x + 7

8x + 7

3 0
3 years ago
Select the correct answer.
DerKrebs [107]
I’m pretty sure the answer is c
8 0
3 years ago
Other questions:
  • Which statements are true about these lines? Check all that apply. Line RS has a slope of 6. Line SW has an undefined slope. Lin
    8·2 answers
  • A hot air balloon is spotted simultaneously by a man and a woman 3 ½ miles apart. If the angle of elevation from the man to the
    9·1 answer
  • A triangle has a side lengths of 3 centimeters, 5 centimeters, and 4 centimeters. Abe used converse of the Pythagorean Theorem t
    14·1 answer
  • Whats the overall homework score ?
    8·1 answer
  • Stephanie sells 12 pretzels per hour. Robert sells 15 pretzels per hour. This week, Robert sold an additional 18 pretzels. Which
    11·1 answer
  • at a school there are 10 students taking only chemistry, 9 students taking only physics 5 students taking both, and 16 students
    8·2 answers
  • 180% is equivalent to what decimal value
    5·1 answer
  • Thomas thinks that 3 7/8 + 2 11/12 is pretty close to 5, but Lorinda thinks it is closer to 6. Todd disagrees with both of them
    9·1 answer
  • Simplify: √18 - √24 + √54
    8·2 answers
  • Given that a function, h, has a domain of -3 ≤ x ≤ 11 and a range of 1 ≤ h(x) ≤ 25 and that h(8) = 19 and h(-2) = 2, select the
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!