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KIM [24]
3 years ago
5

Hi. I need help wih this question (see image). Please show workings.​

Mathematics
1 answer:
Kipish [7]3 years ago
4 0

Answer:

\frac{dy}{dx} = 12x³ - 6x² - 7

Step-by-step explanation:

Differentiate each term using the power rule

\frac{d}{dx} (ax^{n} ) = nax^{n-1}

Given

y = 3x^{4} - 2x³ - 7x + 5, then

\frac{dy}{dx} = 4.3x^{4-1} - 3.2x^{3-1} - 7x^{1-1} + 0

   = 12x³ - 6x² - 7

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An artist created the sculpture shown with concrete. The radius of the bottom hemisphere is double that of the top hemisphere. F
klemol [59]

<u>Answer:</u>

Vt = 4071.5 ft^3

<u>Step-by-step explanation:</u>

Givens:

  • R = 12
  • R = 2r => r = 6

Equations

  1. V = (4/3)(pi)r^3

Find: Vt (Total Volume)

Vt = (1/2)V1 + (1/2)(V2)

Vt = (1/2)(V1 + V2)                 <em>[Factor out (4/3) and (pi) from volumes]</em>

Vt = (1/2)(4/3)(pi)(R^3 + r^3)  <em>[Sub in Values]</em>

Vt = 4071.5 ft^3

5 0
3 years ago
If ST=19 and S lies at -4 , where could T be located?
Natasha2012 [34]

Answer:

15 or -23

Step-by-step explanation:

I think you probably already turned this in but in case you haven't:

ST = 19 means that line segment ST is 19 units long. If we know that S is at -4, then T has to be 19 units away from -4, right?

So there's two directions we could go.

Add 19 to -4 to get 15, so T could be at 15. (If there's a line drawn between -4 and 15, it would be 19 units long.)

But the line could go left, towards negative infinity, too. So if we subtract 19 from -4, we'd get -23. T could also be at -23. (If there's a line drawn between -4 and -23, it would also be 19 units long. There's no such thing as a negative length.)

Please mark as Brainliest! :)

8 0
3 years ago
Three fourths of the fruit in a refrigerator
VashaNatasha [74]

Answer:32 fruits

Step-by-step explanation:

3/4=24/?

24÷3=8

8×4=32

4 0
3 years ago
What’s (3b-5c)(2x+5y) squared
lukranit [14]
Answer: In your problem, you said that they are squared. However, it is not written as squared. We just have to multiply them.

We can use the FOIL method.

(3b - 5c)(3x + 5y)

6bx + 15by - 10cx - 25cy

There are no like terms, so that expression is our final answer.
8 0
3 years ago
Creatividad a división problem with a 2 digit divisor. Using more then 1 set of compatible numbers, observe what happens when yo
Burka [1]
180/10=18 is one but the easitest way is with tens or hundreds

8 0
3 years ago
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