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Kobotan [32]
3 years ago
12

Simplify square root of 5 open parentheses 10 minus 4 square root of 2 close parentheses

Mathematics
1 answer:
Helga [31]3 years ago
4 0
The answer is none of the above
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I put this but idk how to do it
Inessa05 [86]
D ( AC ) = 6  ( because A and C have the same y-coordinate )
d ( AB ) = √[(x2 - x1)² + (y2 - y1)²],  
where A ( x1, y1 ) = ( -3, 1 )   and B ( x2, y2 ) = ( -1, 3 )
d ( AB ) = √[(-1 -(-3))² + (3 - 1 )²] = √[(-2)² + 2²] = √8 = 2√2
d ( BC ) = √[(3-(-1))² + (1-3)² =√[4² + (-2)²]= √20 = 2√5
The perimeter of ΔABC:
6 + 2√2 + 2√5 = 6 + 2 · 1.41 + 2 · 2.24 = 
= 6 + 2.82 + 4.48 = 13.30
 
3 0
3 years ago
8. Tell whether the system has one solution, infinitely many solutions, or no solution. 6y=-5x+24
Sophie [7]
The correct answer is B

7 0
3 years ago
Please help so I cna graduate !
Effectus [21]

Answer: 0.76, -0.76

Step-by-step explanation:

4 0
3 years ago
Find X.<br> Round to the nearest tenth.<br><br> Law of Cosines : c2 = 22 + b2 - 2ab cos C
fiasKO [112]

Answer:

70.5°

Step-by-step explanation:

22² = (20)²+(18)² - 2(20)(18) cos X

484 = 400 + 324 - 720 cos X

-240 = -720 cosx

1/3 = cos X

cos^{-1}(\frac{1}{3}) = X

X = 70.52877937

7 0
3 years ago
Kala has been offered two 40 hour a week jobs. One job pays an hourly wage of $25 and 10% of all sales. The other job pays $20 a
bazaltina [42]
(40 * 25) + 0.10x = (40 * 20) + 0.20x
1000 + 0.10x = 800 + 0.20x
1000 - 800 = 0.20x - 0.10x
200 = 0.10x
200/0.10 = x
2000 = x <=== weekly sales must be $ 2000
3 0
3 years ago
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