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mylen [45]
3 years ago
14

How do you work out 2/5 of 10

Mathematics
2 answers:
Tatiana [17]3 years ago
7 0
A simple way is to work out 1/5 first. To work out 1/5 of something you divide it by 5. So 10 divided by 5 is 2. So this means 1/5 is 2. However we want 2/5 not 1/5. To get 2/5 we just double 1/5. 1/5*2 is 4. This means 2/5 is the same as 4. Your answer is 4.
lesya [120]3 years ago
4 0
This is an example of multiplication of fractions.
2/5 of 10 means (2/5)*10. It can also be written as (2/5)*(10/1)In order to multiply fractions, just multiply the numerators which are 2 and 10 and the product is 20. And multiply also the denominators which are 5 and 1 and the product is 5. The result would be written as 20/5. The final answer should be written in simplified form which is 4.
Solution: (2/5)*10 = (2/5)*(10/1) = 20/5 = 4
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(a) Use the fundamental theorem of algebra to determine the number of roots for 2x^2 + 4x + 7
zysi [14]

Answer:

Step-by-step explanation:

A 2nd order polynomial such as this one will have 2 roots; a 3rd order polynomial 3 roots, and so on.

The quadratic formula is one of the faster ways (in this situation, at least) in which to find the roots.  From 2x^2 + 4x + 7 we get a = 2, b = 4 and c = 7.

Then the discriminant is b^2 - 4ac, or, here, 4^2 - 4(2)(7), or -40.  Because the discriminant is negative, we know that the roots will be complex and unequal.

Using the quadratic formula:

       -4 ±√[-40]         -4 ± 2i√10

x  = ------------------ = ------------------

                4                       4

                                       -2 ± i√10

Thus, the roots are x = ------------------

                                               2

4 0
3 years ago
Does anyone know how to do this?
xeze [42]

Answer:

Step-by-step explanation:

6 0
3 years ago
Mr. Hollins determines that he gives away $800 each month. If he gives away 16% of his budget, then how much is his overall budg
Fynjy0 [20]

Answer:

5000 dollars

Step-by-step explanation:

Let his budget be x

16% of x is 800 dollars

.16 * x = 800

Divide each side by .16

.16x/.16 = 800/.16

x=5000

His budget is 5000 dollars

6 0
2 years ago
Is non-traditional musical notation, like a body percussion composition, considered music?
kykrilka [37]

Answer:

Music is an art form that means individuals can consider what is music to them.

Music in the dictionary describes music as any sound or voice that produces beauty or form. What shapes body percussion in any percussion would be therefore its form or beauty, to be considered music.

If it fails to provide that quality then it is just considered sound or at best notation to music like a short sound can provide would also be notation to music.

5 0
3 years ago
I need help on my math
shtirl [24]

Answer:

y = -5/4x - 4

Step-by-step explanation:

The equation they give you is in slope intercept form.  y=mx+b.  The m is the slope (-5/4).  Since they want a parallel line you keep the same slope for point slope form.  Point slope formula is y-y1=m(x-x1). the y1 and x1 are where you plug in the coordinates they give you.

y - 1 = -5/4x (x + 4)

y - 1 = -5/4x - 5

y = -5/4x - 4

4 0
3 years ago
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