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maksim [4K]
2 years ago
11

Simplify: (13/4)x - 8y- (5/4) x + 7y + 5

Mathematics
1 answer:
Natali5045456 [20]2 years ago
4 0

\dfrac{13}4 x -8y-\dfrac54 x +7y +5\\ \\=\dfrac{13x-5x}{4} -y+5\\\\=\dfrac{8x}{4}-y+5\\\\=2x-y+5

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Prove, cotx -tanx= 2 cot2x
ra1l [238]

Step-by-step explanation:

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<em>L.H.S</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>cosx</em><em>/</em><em>sinx-</em><em> </em><em>sinx</em><em>/</em><em>cosx</em><em> </em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>(</em><em>cos</em><em>²</em><em>x-</em><em> </em><em>sin</em><em>²</em><em>x</em><em>)</em><em>/</em><em> </em><em>sinxcosx</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>[</em><em> </em><em>cos</em><em>²</em><em>x-</em><em>(</em><em>1</em><em>-cos</em><em>²</em><em>x</em><em>)</em><em>]</em><em>/</em><em>sinxcosx</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>(</em><em> </em><em>2cos</em><em>²</em><em>x-1</em><em>)</em><em>/</em><em>sinxcosx</em>

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4 0
3 years ago
HURRY!!
ankoles [38]

Answer: A. 8x+13

Step-by-step explanation:

9+4(2x-1)+8

Use distributive property

9+8x-4+8

Combine like terms

8x+13

4 0
3 years ago
Read 2 more answers
Can u plzz help me with my homework
schepotkina [342]
The unit rate for Hakim's car is traveling 30 feet per second (I just simplified 600/20). Then the unit rate for Andre's motorcycle would be 25 feet per second (I simplified 300/12). So in conclusion, Hakim's car is traveling faster. So then, 30 > 25.
6 0
3 years ago
Simplify the following expression. 12a + 2a
mamaluj [8]

Answer:

14a

Step-by-step explanation:

Combining like-terms gives us 12a+2a=14a

Hope this helped!

6 0
3 years ago
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A factory purchased a machine for $35,000. The value of the machine depreciates at a rate of 10% each year. Complete the followi
Olegator [25]
Inital value= 35,000
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