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kiruha [24]
4 years ago
8

Evaluate the expression. 50 points!!

Mathematics
2 answers:
3241004551 [841]4 years ago
8 0

Answer:

2+2+2

Step-by-step explanation:

32+2+23

Zina [86]4 years ago
7 0

Answer:

C

Step-by-step explanation:

If you notice, this is what the tangent-difference identity resembles. The tangent-difference identity is:

\tan(\alpha-\beta)=\frac{\tan(\alpha)-\tan(\beta)}{1-\tan(\alpha)\tan(\beta)}

We have the expression:

\frac{\tan(\frac{\pi}{7})-\tan(\frac{\pi}{8})}{1-\tan(\frac{\pi}{7})\tan(\frac{\pi}{8})}

So, our α is π/7 and our β is π/8. Therefore:

\frac{\tan(\frac{\pi}{7})-\tan(\frac{\pi}{8})}{1-\tan(\frac{\pi}{7})\tan(\frac{\pi}{8})}=\tan(\frac{\pi}{7}-\frac{\pi}{8}})

Simplify:

\frac{\tan(\frac{\pi}{7})-\tan(\frac{\pi}{8})}{1-\tan(\frac{\pi}{7})\tan(\frac{\pi}{8})}=\tan(\frac{8\pi}{56}-\frac{7\pi}{56}})

Subtract:

\frac{\tan(\frac{\pi}{7})-\tan(\frac{\pi}{8})}{1-\tan(\frac{\pi}{7})\tan(\frac{\pi}{8})}=\tan(\frac{\pi}{56})

So, our answer is C.

And we're done!

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12345 [234]

Answer:

- 6 - 2 + 3 + 3 - 4 \\   =  >  - 6 - 2 + 6 - 4 \\  =  >  - 6 - 8 - 4 \\  =  >  - 14 - 4 \\  =   - 18

7 0
3 years ago
During Samuel’s experiment, the experimental probability was 0.25. What else must be true about the experiment?
Zanzabum

Answer:

The experimental probability of the outcome is 1/4

Step-by-step explanation:

-kitkat- i am going to say that every time lol

8 0
3 years ago
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A circle has a radius of 4 meters and a central angle AOB that measures 120°. What is the length of the intercepted arc AB? Use
Valentin [98]
<span>120 degs --> 1/3 of the circumference :) hope i helped!</span>
6 0
3 years ago
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The standard diameter of a golf ball is 42.67 mm. A golf ball factory does quality control on the balls it manufactures. Golf ba
sergiy2304 [10]

THE ANSWER IS A:

This is the function:

f(x)=|42.67-x|.

42.670 -.002 =42.668

42.668 mm to 42.670

Explanation:

Production will be stopped if the difference in diameter is greater than 0.002 mm.

This difference can mean that the golf ball has a diameter more than 0.002 larger than 42.67 mm, or a diameter more than 0.002 smaller than 42.67. This is the reason for using an absolute value function.

 Absolute value represents the distance a number is from 0. For this function, we would want only the values where the function is less than 0.002.

4 0
3 years ago
What else would need to be congruent to show that triangle EFG=~ triangle HIJ by SSS?
Anuta_ua [19.1K]

Answer:

C

Step-by-step explanation:

In order to prove congruency using SSS, we need to prove that all three pairs of sides are congruent.

We are already given that EF ≅ HI and that FG ≅ IJ.

Therefore, the last bit of information we need to prove congruency using SSS is that EG ≅ HJ.

Hence, our answer is C.

8 0
3 years ago
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