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Katena32 [7]
3 years ago
7

What is the derivative of this

Mathematics
1 answer:
skelet666 [1.2K]3 years ago
7 0
\bf r(x)=\cfrac{3x-2}{2x+5}\implies \cfrac{dr}{dx}=\stackrel{quotient~rule}{\cfrac{3(2x+5)~~-~~(3x-2)2}{(2x+5)^2}}
\\\\\\
\cfrac{dr}{dx}=\cfrac{\underline{6x}+15\underline{-6x}+4}{(2x+5)^2}\implies \cfrac{dr}{dx}=\cfrac{19}{(2x+5)^2}
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Solve this equation: 4y + 228 = 352. <br> A. y = 31<br> B. y = – 31<br> C. y = 3<br> D. y = 145
V125BC [204]
To let the variable alone you can follow these steps: 1) subtract 228 from both sides 2) divide both sides by 4. This is the solution: 1) 4y + 228 - 228 = 352 - 228 => 2) 4y = 124 => 3) (4y)/4 = 124/4 => 4) y = 31. Then, <span>the answer is the option A. y = 31. </span>
3 0
2 years ago
Can you plz solve this ​
Lesechka [4]

Answer:

a) acute angle

b) obtuse angle

c) right angle

d) reflex angle

e) straight line angle

f) acute angle

Step-by-step explanation:

Acute angle

  • angle that is smaller than 90°
  • 0° < θ < 90°

Right angle

  • angle that is 90°
  • shaped of a "L"

Obtuse angle

  • angle that is greater than 90° but smaller than 180°
  • 90° < θ < 180°

Straight line angle

  • angle that is 180°
  • drawn in a straight line

Reflex angle

  • angle than is greater than 180°
  • θ > 180°
8 0
3 years ago
A fish tank at a pet store has 8 zebra fish. in how many different ways can Nikki choose 3 zebra fish? A.512 B. 336 C. 24 D. 56
STALIN [3.7K]
<span>56 is the answer because
8*7*6/3*2</span>
7 0
3 years ago
Help me for this question ASAP
Ugo [173]

Answer:

Cube

Step-by-step explanation:

The cubed root of 8 = 2 because 2³ = 8.

So 8 is perfect cube.

6 0
3 years ago
NEED HELP ASAP!!!!!!!!!!!!!!!!
FromTheMoon [43]

Answer:

6:8 and 9:12

Step-by-step explanation:

As long as you do the same thing to both parts of the ratio, it's the same ratio

5 0
3 years ago
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