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2 years ago

Multiply. Write your answer as a fraction in simplest form. 8 X 9

Mathematics

1 answer:

Kamila [148]2 years ago

6 0

Answer:

40/54 = 20/27

Step-by-step explanation:

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How to find the derivative 5x²-2x+1

slamgirl [31]

What you need to know:

$y=k{ x }^{ n }\\ \\ \ln { y } =\ln { \left( k{ x }^{ n } \right) }$

$\\ \\ \ln { y } =\ln { k } +\ln { \left( { x }^{ n } \right) } \\ \\ \ln { y } =\ln { k } +n\ln { x }$

$\\ \\ \frac { 1 }{ y } \cdot \frac { dy }{ dx } =\frac { n }{ x } \\ \\ y\cdot \frac { 1 }{ y } \cdot \frac { dy }{ dx } =\frac { n }{ x } \cdot y$

$\\ \\ \frac { dy }{ dx } =n{ x }^{ -1 }\cdot k{ x }^{ n }\\ \\ \frac { dy }{ dx } =kn{ x }^{ -1+n }$

$\\ \\ \frac { dy }{ dx } =kn{ x }^{ n-1 }$

If this is the case, when:

$y=5{ x }^{ 2 }-2x+1$

dy/dx is...

$\\ \\ \frac { dy }{ dx } =5\cdot 2{ x }^{ 2-1 }-2\cdot 1{ x }^{ 1-1 }\\ \\ \frac { dy }{ dx } =10x-2\cdot { x }^{ 0 }$

$\\ \\ \frac { dy }{ dx } =10x-2$

6 0

4 years ago

Read 2 more answers

Q is the midpoint of segment pr. pq=2x+1 and qr= 3x-5. what is the length of segment pr

viva [34]

I’m not positive this is right but try 26. I set 2x+1 and 3x-5 equal to each other and solved for x. I got x=6 then plugged it into both of the equations then added the equations together.

8 0

3 years ago

Could you please solve this? I do not understand it.

oksano4ka [1.4K]

#2
Change mixed numbers to improper fractions. Then change division to multiplication by the reciprocal.
1 1/2 divided by 3/5=
(3/2) * (5/3) = 5/2 = 2 1/2
#3
(5/9) divided by (5/3)
(5/9) * (3/5) =3/9 = 1/3

3 0

4 years ago

What is the distance between the points M (-3, 7) and N (a, b)?

gavmur [86]

Answer: $\sqrt{ (-3-a)^2 + (7-b)^2 }$

Explanation:

We plug the given coordinates into the distance formula

$d = \sqrt{ (x_1-x_2)^2 + (y_1-y_2)^2 }\\\\$

There isn't much we can do from there since we don't know the values of 'a' or 'b'. You could expand out each binomial, but it's more simplified being factored like that.

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4 years ago

fifty student in the seventh grade are trying to raise at least $2,000 for sports supplies. They have already raised $750. How m

levacccp [35]

Each student should make at least $25 to reach their goal.

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3 years ago