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3 years ago

Is d y / d x the exact same as f ' ( x ) ? If yes, which is more commonly used?

1 answer:

7 0

It's dependent on the context. A book may ask you to find the f'(x) of a function and you may have to use a u sub in your problem which requires you to find the dy/dx of what you substitute. So in this case both would be used.

You might be interested in

Find M A. 17 B. 16 C. 18 D. 20

mixas84 [53]

Answer:

A. 17

Step-by-step explanation:

using the cosine rule (also see attached for reference):

AB² = BC² + AC² - 2·AC·BC cos C

2·AC·BC cos C = BC² + AC² - AB²

Given that AC = 18, AB = 12 and BC = 18, substituting these into the formula

2(18)(28) cos C = 28² + 18² - 12²

1008 cos C = 964

cos C = 964/1008

cos C = 0.9563

C = cos⁻¹ 0.9563

C = 16.99 ( = 17° rounded to nearest degree)

7 0

3 years ago

Answer these please tell me 1. What the error was 2. How can U check ur answer

emmainna [20.7K]

Answer:

The first one: the error was that the 3 shouldn’t have been moved but the 5 should have. The correct answer is k=-8

The second one: the error was that they added the 6 and 4, you would only get -10 if the 4 was - the correct answer is -2

You can check your answer by plugging in your answer to the variable and making sure both side equal each other

Step-by-step explanation:

The first one: the 5 should be - from both side so you get k=-8

The second one: the 4 should be + to both sides. And the -6 and +4 should be added together to get n=-2

Remember you always want to get the variables by themselves.

Sorry that was a lot. Hope it helps!

8 0

3 years ago

NEED DESPERATELY. PLEASE!!! A BIG REWARD IS AT STAKE. BRAINLIEST WILL BE GIVEN. (Keep out for more problems with rewards from me

Rom4ik [11]

Answer:

My total savings was = $58.33

Step-by-step explanation:

Given:

12% of my savings was = $7.00

To find my total savings.

Solution:

Let the total savings in dollars be = $x$

12% of the total savings will be = $12\%\ of\ x$

12% of my savings was = $7.00

So, we have:

$12\%\ of\ x=7$

$0.12x=7$

Solving for $x$ to get my total savings.

Dividing both sides by 0.12

$\frac{0.12x}{0.12}=\frac{7}{0.12}$

∴ $x=58.33$

Thus, my total savings was = $58.33

7 0

3 years ago

Please help me!!!!!

chubhunter [2.5K]

Answer:

y = - $\frac{2}{5}$ (x - 5)² + 7

Step-by-step explanation:

The equation of a quadratic in vertex form is

y = a(x - h)² + k

where (h, k ) are the coordinates of the vertex and a is a multiplier

Here (h, k ) = (5, 7 ) , then

y = a(x - 5)² + 7

To find a substitute (10, - 3 ) into the equation

- 3 = a(10 - 5)² + 7 ( subtract 7 from both sides )

- 10 = 5²a = 25a ( divide both sides by 25 )

$\frac{-10}{25}$ = a , that is

a = - $\frac{2}{5}$

y = - $\frac{2}{5}$ (x - 5)² + 7 ← in vertex form

8 0

3 years ago

Is this graph linear or exponential

barxatty [35]

Its a graph linear i believe

3 0

3 years ago