7/10-(-5/3) find the difference

Mathematics

2 answers:

Alex777 [14]3 years ago

5 0

7/10+5/3
=21/30+50/30
=71/30

SOVA2 [1]3 years ago

5 0

To subtract fractions, you first need to find a common denominator. The common denominator should be a multiple of both denominators. We can use 30 because it is a multiple of both 10 and 3.

Now that we have 30 on the bottom, we need to multiply the numerators by the same amount we multiplied the denominator by to keep the fractions proportional.

First 7/10... To turn 10 into 30 we had to multiply by 3. Do the same to the 7. We now have 7*3 = 21.

Then -5/3... To turn 3 into 30 we had to multiply by 10. So -5*10 = -50.

Now subtract the numerators.

21 - (-50) = 21 + 50 = 71.

So the answer is 71/30

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What is square root of 5x^4-6x^5+x^6+16x^3-8x^2-8x+4 ? <br>help me pleasee !

Natali5045456 [20]

Answer:

y = (x + 1)(x - 0.586) ( x - 3.414)

Step-by-step explanation:

I sure wouldn't recommend doing this by trial and error.

I made a graph of which you can see. Every time this monster touches the x axis and speeds away upward is two equal roots of y. So the square root would be one of each of them.

y = (x + 1)^2 (x - 0.586)^2 (x - 3.414)^2

are the listed roots.

The square root is

y = (x + 1)(x - 0.586) ( x - 3.414)

Do I know that this is right? I don't. But I can tell you this: if you multiply 1^2 * (-0.586)^2 * (- 3.414)^2

you get 4 just as you should. Amazing that we have tools that do that sort of thing.