Two angles are complementary when their sum is equal to 90°.
So, ( 2x + 39 ) + ( 7x - 21 ) = 90°
9x + 18° = 90°
x = 8°
Putting value of x in the angles given :
( 2x + 39 )° = 2(8°) + 39° = 55°.
( 7x - 21 )° = 7(8°) - 21° = 35°.
Therefore, the angles are 55° and 35°.
Hence, this is the required solution.
Answer:
457/1000
Step-by-step explanation:
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Answer:
add a picture
Step-by-step explanation:
add a picture
Answer:
$14.98
Step-by-step explanation:
Answer:
The answer to your question is 2i
Step-by-step explanation:
![\sqrt[4]{-16}](https://tex.z-dn.net/?f=%5Csqrt%5B4%5D%7B-16%7D)
- Get the prime factors of -16
- 16 2
- 8 2
- 4 2
- 2 2
1
16 = 2⁴
- Express the -16 as a power
![\sqrt[4]{-2^{4}} or \sqrt[4]{2^{4}i^{2}}](https://tex.z-dn.net/?f=%5Csqrt%5B4%5D%7B-2%5E%7B4%7D%7D%20%20or%20%20%20%5Csqrt%5B4%5D%7B2%5E%7B4%7Di%5E%7B2%7D%7D)
Remember that -1 = i²
- Get the fourth root of -16
2i