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enot [183]
3 years ago
8

Please help me with this question

Mathematics
1 answer:
hichkok12 [17]3 years ago
5 0
Easy math, % = number you multiply by when you MOVE the decimal TWICE to the LEFT. For example 56% would be .56 and 9% would be .09, and then you just multiply it with the 40 mins (.20) and all the other ones :)
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PLEASE I'm DESPERATE!. Find a, b, c, and d such that the cubic . f(x) = ax3 + bx2 + cx + d. satisfies the given conditions.. Rel
dimulka [17.4K]
We are given with the equation <span>f(x) = ax3 + bx2 + cx + d

Substituting, (3,11) 
</span><span>11= 27a + 9b + 3c + d
</span><span>@(5, 9) 
</span><span>9 = 125 a + 25 b + 5c + d
@</span><span>(4, 10)
</span><span>10 = 64 a + 16 b + 4c + d

@inflection point, second derivative is equal to zero
</span><span>f'(x) = 3ax2 + 2bx + c 
</span>f''(x) = 6ax + 2b = 0

when x is 4, 24 a + 2b = 0 or 12a + b = 0. 

There are 4 equations, 4 unknowns: answer is 
<span>0.5 x^3 - 6x^2 + 22.5 - 24 = 0</span>
4 0
3 years ago
Read 2 more answers
F(x)= x2<br> What is f(x) + f(x) + f(x)?
Irina18 [472]

Answer:

Step-by-step explanation:

You already have f(x)= x2

so

3(2x)=6x

I hope this help

6 0
2 years ago
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Daniel, Clarence, and Matthew split a $20.20 dinner bill so that Daniel pays half of what
Bingel [31]

Answer:

8.80$

Step-by-step explanation:

Total 20.20. 6.06 x 2=12.12. 20.20-12.12=8.80$

Mathew paid 8.80$

Clarence paid 12.12$

Daniel paid 6.06$

7 0
3 years ago
In the figure below, points M, P, H, J, and K lie in plane Z.
marishachu [46]

Answers:

  • (a) LN
  • (b) PHJ
  • (c) K
  • (d) HK

===================================================

Explanation:

Part (a)

Lines LN and PN have the point N in common. This is the intersection point.

-----------------

Part (b)

To name a plane, pick any three non-collinear points that are inside it. We cannot pick points H, J, K together because infinitely many planes pass through it. Imagine the piece of flat paper able to rotate around this axis (like a propeller). Having the points not all on the same line guarantees we form exactly one unique plane.

I'll pick the non-collinear points P, H and J to get the name Plane PHJ. Other answers are possible.

------------------

Part (c)

Points H, J and K are collinear as they are on the same line. Pick either H or K to fill out the answer box. I'll go with point K

------------------

Part (d)

Point P and line HK are coplanar. They exist in the same flat plane, or on the same sheet of flat paper together.

We can think of that flat plane as the ground level while something like point N is underground somewhere. So point N and anything on that ground plane wouldn't be coplanar.

Note: there are other possible names for line HK such as line JH or line JK. The order doesn't matter when it comes to naming lines.

4 0
3 years ago
3 + 5x - 10 = 13, Whats x?
Romashka [77]
Hi there, 3+-10=-7 so, -7+5x=13. First, we add -7 to both sides, which gives us 5x=13+7, 13+7=20, so 5x=20. Now, we divide both sides by 5, Therefore, x=4
5 0
3 years ago
Read 2 more answers
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