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andrew-mc [135]
3 years ago
13

the legs of a right triangle have lengths of 27 meters and 36 meters. the hypotenuse has a length of 5x meters what is the value

of x
Chemistry
1 answer:
LuckyWell [14K]3 years ago
5 0
Hi there!

We can use pythagorean theorem to solve this problem here. The easiest way to go about solving this problem is to use the theorem to find the hypotenuse, then dividing it by 5 to find the value of x, since the hypotenuse is 5x.

WORK:
27^2 + 36^2 = h^2     (plugging into theorem)
729 + 1296 = h^2     (squaring the numbers)
h^2 = 2025              (adding the numbers together)
hypotenuse = 49    (taking the square root of 2025)
49/5 = x                 (dividing 49 by 5 to find x)
x = 9.8                  (dividing)

Hope this helps!! :)
If there's anything else that I can help you with, please let me know!
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6 0
3 years ago
(Numerical problems) A car is running with the velocity of 72km/h. What will be it's velocity after 5s if it's acceleration is -
kodGreya [7K]

The car's velocity after 5s : 10 m/s

<h3>Further explanation</h3>

Given

velocity=v=72 km/h=20 m/s

time=t = 5 s

acceleration=a = -2 m/s²

Required

velocity after 5s

Solution

Straight motion changes with constant acceleration

\tt v_f=v_i+at

vf=final velocity

vi = initial velocity

Input the value :

\tt v_f=20+(-2).5\\\\v_f=20-10\\\\v_f=10~m/s

The car is decelerating (acceleration is negative) so that its speed decreases

4 0
3 years ago
Which of the following measurements is expressed to three significant figures? 7.30 × 10–7 km 0.007 m 7077 mg 0.070 mm
Sonbull [250]

7.30 x 10^-7 km. the others have 4 significant figures.

4 0
2 years ago
How are radioisotopes different from the standard form of an element
meriva

Answer:

Different isotopes of the same element have the same number of protons in their atomic nuclei but differing numbers of neutrons. Radioisotopes are radioactive isotopes of an element. They can also be defined as atoms that contain an unstable combination of neutrons and protons, or excess energy in their nucleus.

6 0
3 years ago
Which two statements describe what happens to the nuclei of atoms during a fusion reaction? O A. Large nuclei break apart into t
pashok25 [27]

Answer:

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B. A small amount of mass in the nuclei that combine is converted to energy

Explanation:

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According to this question, the following are true of a fusion reaction:

- Nuclei with small masses combine to form nuclei with larger masses.

- A small amount of mass in the nuclei that combine is converted to enormous energy.

3 0
2 years ago
Read 2 more answers
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