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storchak [24]
3 years ago
6

In calculus, we went over the subject of implicit differentiation. I feel pretty solid on how to do it, except when they give th

e problem with \frac{dx}{dt} or \frac{dx}{dy} instead of your standard \frac{dy}{dx}
How do you do these kinds of problems?
Mathematics
1 answer:
babymother [125]3 years ago
7 0
The same way.

\dfrac{dy}{dx} means it's derivative of function y with respect to x

\dfrac{dx}{dt} means it's derivative of function x with respect to t

\dfrac{dx}{dy} means it's derivative of function x with respect to y


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I need your help on these questions. Please explain each of them. Thank you for your support
kodGreya [7K]

Answer:

Gemma

9 X 150 = 1350

61000/100 X 2 =1220

add together $2570

Fred

14350/100x2=287

200 + 287 = $487

Erik

4 X 160 = 640

153000/100 X 2.5 = 3825

3825 + 640 = $4465

Allison

510000/100x0.5 = $2550

4 0
3 years ago
What is the discriminant in the quadratic equation x2 + 11x + 121 = x + 96? <br>      A. 0 B. 100 C. 20 D. 200
Maurinko [17]
Given:
x² + 11x + 121 = x + 96

First, we need to convert it into a quadratic equation.

x² + 11x - x + 121 - 96 = 0
x² + 10x + 25 = 0

a = 1 ; b = 10 ; c = 25

Quadratic formula:

x = (-b <u>+</u> (√b² - 4ac)) ÷ 2a

The discriminant is under the radical sign

discriminant ⇒ b² - 4ac ⇒ 10² - 4(1)(25) ⇒ 100 - 100 = 0

Correct answer is A. 0
7 0
3 years ago
Read 2 more answers
I cant solve this can i get some help? <br> 2 cos x + √ 2 = 0
Alexandra [31]

Answer:

Step-by-step explanation:

2 cos x + √ 2 = 0

2 cos x = -√ 2

cos x = -√ 2  / 2

x = arcCos(  -√ 2  / 2 )

so to solve we have to use  "co-terminal " angles .. do you know what I'm saying?  do you understand the words coming out of my mouth :DDDDD OKay back to math and not movie lines .. :P

x = arcCos(  √ 2  / 2 )

x = 45 °

now find the "co terminal" angle that is on 45 ° but in the correct quadrant... since the  -√ 2   is negative.. we now that we go down the y axis.. but also positive on the x axis.. soooo.. that put the angle in the 4th quadrant... so this is an angle of 315° if we go in the CCW  ( counter clock wise )  direction but it's also -45°  in the CW  (clock wise )  direction

below is the table to remember the trig special angles

notice how it's  1,2,3,4    .. so it's super easy to remember.. the trig books don't show you this "trick"   :P

copy and paste this to your computer some where handy

Sin(0) = 0/2      =0  

Sin(30)= \sqrt{1}/2   = 1/2  

Sing(45) =\sqrt{2}/2 =\sqrt{2}/2  

Sin(60)=\sqrt{3}/2   = \sqrt{3}/2  

Sin(90)=\sqrt{4}/2   = 1  

Cos is exactly the same but counts backwards from 90°

Cos(90) = 0/2       = 0

Cos(60) = \sqrt{1} /2   = 1/2

Cos(45) = \sqrt{2}/2    =\sqrt{2}/2

Cos(30) = \sqrt{3}/2   =\sqrt{3}/2

Cos(0) = \sqrt{4}/2    = 1

8 0
3 years ago
Help I don't wanna get a bad grade
solmaris [256]

Answer:

The answer would be B)

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Please help me. i will mark you as most brilliance and give you 5 stars! Please be specific when answering. thank you! :)
serg [7]

Step-by-step explanation:

5x+52=9x+20

subtract 5x on both sides

subtract 20 on both sides

32=4x

divide by 4 on both sides

x=8

plug in x to the equations for A, D, and C

A and D are 92°

C is 56°

B and C will add up to 90, so

90-56=34°

13y-6=34

add 6 on both sides

13y=40

divide by 13

y=40/13 (I don't wanna calculate that)

7 0
3 years ago
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