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
Anastaziya [24]
3 years ago
8

I NEED HELP ASAP PLEASE

Mathematics
1 answer:
Olenka [21]3 years ago
6 0
You have to use the geometric mean of right triangles here.  Your ratio is set up like this:  \frac{3}{y} = \frac{y}{12+3}.  That gives you  y^{2} =45 and that y =3 \sqrt{5}.  To find z in the second part, use the Pythagorean Theorem.  z^{2} =(3 \sqrt{5} ) ^{2} -(3) ^{2} and z = 6.  In the third part, the student should have had the length of the hypotenuse as the denominator in the second ratio, which is 8.  So your answer there is the second one down.  In order to do that last one you need to find the hypotenuse in the triangle that has legs of 4 and 10.  Using Pythagorean's theorem we find that that length is \sqrt{116}.  Now set up your geometric mean:  \frac{4}{ \sqrt{116} }= \frac{ \sqrt{116} }{x+4}.  Cross multiply to get 4x + 16 = 116 and that 4x = 100.  Solve for x to get x = 25
You might be interested in
There are 841,726 people living in a city in Africa. What is the order of magnitude of this number?
Lina20 [59]

Answer:

6

Step-by-step explanation:

There  6 digits in this number so its of magnitude 6.

8 0
3 years ago
A line parallel to a triangle's side splits AB into lengths of x - 7 and x - 3. The other side, AC, is split into lengths of x a
Nesterboy [21]

Answer:

Step-by-step explanation:

6 0
3 years ago
How many years is tween 1844 to2015
STatiana [176]
To find the number of years between 1844 to 2015 you have to subtract.

Lets say that x is the # of years in between 1844 and 2015

Then we have:
\sf{2015 - 1844 =x}

After doing the subtraction using a calculator or a pencil and paper, you get that:

\huge{\boxed{\bf{x=171}}}

So 171 years have passed from 1844 to reach to 2015.
4 0
3 years ago
Read 2 more answers
The original price of an audio jukebox was 280 it is on sale for 220 what percent discount does this represent
solong [7]

Answer:

The answer would be 12%

Step-by-step explanation:

250-220=30 and 30 is 12% of 250

4 0
2 years ago
Read 2 more answers
Help me this is my question:
creativ13 [48]

Answer:

(.2)(15.75)=3.15

Step-by-step explanation:


8 0
3 years ago
Other questions:
  • An element with mass 640 grams decays by 7.3% per minute. How much of the element is remaining after 8 minutes, to the nearest 1
    15·2 answers
  • What is the measure of D?
    9·2 answers
  • Write sentence as inequality. Plz help<br> A number x is less than 5 and greater than 3.
    10·1 answer
  • A. $24.28<br> B. $30.35<br> C. $20.23 <br> D. $16.19
    7·1 answer
  • X - y = 4<br><br> 2x + y = -4<br><br> x = y =
    15·1 answer
  • Help?? Giving Brainly
    7·2 answers
  • In a triangular prism area of rectangular surface is twice the area of traingular surface if tsa 3000. Find the area of triangul
    10·1 answer
  • Stuck on this question. Please Help!
    13·1 answer
  • HELP
    7·1 answer
  • Hellllllllllllllllllllllllpppppppppppppppppppppppp
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!