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n200080 [17]
3 years ago
10

I need help with 3 4 5

Mathematics
1 answer:
SCORPION-xisa [38]3 years ago
4 0
3 is 13
4 is 18
5 is 20
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What’s the approximate value of x?
drek231 [11]

Answer:

Option C: 4

Step-by-step explanation:

<u>Use the Pythagorean Theorem:</u>

a^2+b^2=c^2

3^2+b^2=5^2

9+b^2=25

b^2=16

b=4

Therefore, the value of x is 4.

4 0
2 years ago
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Whoever helps me with this I'll give brainliest and extra points! :)
Musya8 [376]

What are the options

6 0
3 years ago
Can someone help me on all of them I would appreciate it so much!
katovenus [111]
I hope this helps !!

3 0
2 years ago
Please help! Chapter test tomorrow!!<br>PLEASE i need to show the work, the equations.
Nana76 [90]

Answer:

x=6

Step-by-step explanation:

4x-15=2x-3

+15 +15

4x=2x=12

/2 /2 +12

2x=12

/2 /2

x=6

4 0
3 years ago
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How cos π/3=1/2?<br>having some problems learning continuity.
Bingel [31]

You can show that \cos\frac\pi3=\frac12 by constructing a triangle.

Take two points, O(0, 0) and A(1, 0), and let B be the point on the unit circle such that the angle between the line segments OA and OB is \frac\pi3 radians.

Since both A and B lie on the circle, the line segments OA and OB both have length 1 (same as the circle's radius). We finish constructing the triangle by connect A and B.

Since OB and OA have the same length, triangle OAB is isosceles, but more than that, it's also equilateral. Why? Because the interior angles of any triangle always add to \pi radians. We know one of the angles is \frac\pi3 radians, which leaves a contribution of \frac{2\pi}3 radians between the remaining angles A and B. Angles A and B must be congruent (because OAB is isosceles), which means they also have measure \frac\pi3 radians.

Next, draw an altitude of the triangle through point B, and label the point where it meets the "base" OA, C. Since OAB is equilateral, the altitude BC is also a perpendicular bisector. That means OC has length \frac12, and by definition of \cos we have

\cos\dfrac\pi3=\dfrac{OC}{OB}=\dfrac{\frac12}1=\dfrac12

3 0
3 years ago
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