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Finger [1]
4 years ago
9

a few calculus questions I need help with. ASAP! I already tried doing them but I need someone to check pls (there is a total of

four).

Mathematics
1 answer:
Mnenie [13.5K]4 years ago
5 0
1) Correct


2)  Incorrect
First statement is also True.
When y= 2, numerator becomes 0, then slope = 0 which is a horizontal line.
Answer:  C

3)  Incorrect
Coffee cannot become cooler than room temp, so options A and B are eliminated.  The coffee went from 100 to 80 in 1 min, this is half the difference to room temp of 60. In the next minute it would decrease half the distance again, from 80 to 70.  In the 3rd minute, from 70 to 65, 4th minute, 65 to 62.5
Answer: C


4)  Incorrect
Solve equation for dy/dx, you get a linear function.  The anti-derivative of a linear function is a quadratic function, which is a parabolic curve.
Answer: C
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What is the completely factored form of x4y – 4x2y – 5y? y(x2 – 5)(x2 1) y(x2 5)(x2 – 1) (x2y – 5)(x2 1) (x2y 5)(x2 – 1)
Gala2k [10]

Answer:

y (x² + 1) (x² - 5)

Step-by-step explanation:

<h3>Factorization:</h3>

   Take 'y' from each term.

x⁴y - 4x²y - 5y = y[x⁴ - 4x² - 5]

Now factorize x⁴ - 4x² - 5.

            Sum = -4

        Product = -5

        Factors =  -5 , 1  

When we add (-5) + 1, it gives (-4) and when we multiply (-5)*1, gives (-5).

x⁴ - 4x² - 5 = x⁴ + x² - 5x² - 5

                 = x²(x² + 1)  -5(x² + 1)

                 = (x²+ 1) (x² - 5)

x⁴y - 4x²y - 5y = y (x² + 1) (x² - 5)

7 0
2 years ago
Please answer fast this answer with image​
jarptica [38.1K]

Answer:

3/2

use a calculator to try it on your own

do the 1/4 - 4/9 (4/2/3-11/12) first

then times 9/17

then plus 1/1/8

at last divide by 9/16

4 0
3 years ago
How do i tell whether the given side length is a right angle
erica [24]

Answer:

The sum of the lengths of any two sides of a triangle is greater than the length of the third side. If you take the three sides of a triangle and add them in pairs, the sum is greater than (not equal to) the third side. If that is not true, then it is not possible to construct a triangle with the given side lengths.

Step-by-step explanation:

4 0
3 years ago
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Ep-8 if grounded aboard a small powerboat, which is a method to help free yourself?
andreyandreev [35.5K]
<span>Grounding on boats is something like a mystery to most of the people. They think that the factory hooked it up like that and therefore the installation must be correct. But that's something which will not work every time.</span>
Thus if you are grounded aboard a small powerboat then place everybody aboard in the center of the boat and<span> t</span>ry to kedge your boat off the obstruction. 

5 0
3 years ago
A number n is multiplied with —9 to give 63. Find the value of n.
FrozenT [24]

Answer:

n = -7

Step-by-step explanation:

63÷-9

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3 years ago
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