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3 years ago

4/7+1/3 = Enter your answer as a fraction in simplest form by filling in the boxes.

Mathematics

1 answer:

Evgen [1.6K]3 years ago

3 0

Answer:

Step-by-step explanation:

First, you need to find the GCF of both denominators.

That would be 21.

You would need to multiple the 7 in 4/7 by 3, to get to 21. That means you would also have to multiply 3 by the 4. You should get 12/21.

Do you same thing to 1/3.

After that you should get the 2 factions, 12/21 and 7/21

12/21 + 7/21 = 19/21

There isn't anyway to simplify it, meaning the final answer is 19/21.

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If you're creative, I need help. I am doing a math project where I need to define 20 words and include a picture and some facts

valentinak56 [21]

Answer:

Powerpoint

Step-by-step explanation:

I think that a powerpoint presentation would be best. With the first slide, put the picture and a title. With each slide, put more than one word and maybe an example. Make it colorful and maybe put some math puns in some of them.

Hope this helps.

6 0

4 years ago

f(x)=x^2-x-1 , average rate of change of f over interval -2 greater than or equal to x less than or equal to 1

SCORPION-xisa [38]

The average rate of change within the function f(x)= $x^{2} -x-1$ is -2.

Given The function f(x)= $x^{2} -x-1$

We have to search out the typical rate of change of function within the interval (-2,1).Interval is largely a variety between numbers lying on the quantity line which may be a line on which different numbers are plotted.

We know that average rate of change =f(b)-f(a)/(b-a)

we have to first know the values of function at different values of x.

f(x)= $x^{2} -x-1$

f(1)=1-1-1

=-1

f(-2)=4+2-1

b=-2

a=1

put within the formula:

A=-1-5/1+2

=-6/3

=-2

Hence average rate of change of the function within the interval (-2,1) is -2.

Learn more about average at brainly.com/question/20118982

#SPJ10

3 0

2 years ago

Is 2/5 grater than or less than or equal to 1/3

Vsevolod [243]

2/5 is greater than 1/3, because 2/5 = .4 and 1/3= .33333333..... Hope I was helpful.

4 0

3 years ago

Read 2 more answers

Suppose that v is an eigenvector of matrix A with eigenvalue λA, and it is also an eigenvector of matrix B with eigenvalue λB. (

galben [10]

Answer:

(a) Yes, $λ_{A}+λ_{B}$

(b) Yes, $λ_{A}λ_{B}$

Step-by-step explanation:

First, lets understand what are eigenvectors and eigenvalues?

Note: I am using the notation $λ_{A}$ to denote Lambda(A) sign.

$v$ is an eigenvector of matrix A with eigenvalue $λ_{A}$

$v$ is also eigenvector of matrix B with eigenvalue $λ_{B}$

So we can write this in equation form as

$Av=λ_{A}v$

So what does this equation say?

When you multiply any vector by A they do change their direction. any vector that is in the same direction as of $Av$ , then this $v$ is called the eigenvector of $A$ . $Av$ is $λ_{A}$ times the original $v$ . The number $λ_{A}$ is the eigenvalue of A.

$λ_{A}$ this number is very important and tells us what is happening when we multiply $Av$ . Is it shrinking or expanding or reversed or something else?

It tells us everything we need to know!

Bonus:

By the way you can find out the eigenvalue of $Av$ by using the following equation:

$det(A-λI)=0$