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Jet001 [13]
3 years ago
8

Can you help me! ln this question .and explain it in step by step​ (optional math)

Mathematics
1 answer:
photoshop1234 [79]3 years ago
8 0

Answer:

\frac{6}{ \sqrt{3 } }  - 2 \sqrt{2}  -  \frac{5 \sqrt{3} }{4}  = 6 - 2 \sqrt{6}  -  \frac{15}{4}  =  \frac{9}{4}  - 2 \sqrt{6}

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PLEASE HELP ...Select the correct answer.
bearhunter [10]

Answer:

A

Step-by-step explanation:

The graph cuts each other at x≈5.5 and x≈-0.75

5 0
3 years ago
After going trick-or-treating, Cheyan is trying to
Mice21 [21]

Answer:

16

Step-by-step explanation:

All you have to do is add 14+34 which is 48. Since you know that she averaged 3 pieces of candy you have to divide 48 and 3 which is 16

3 0
3 years ago
Read 2 more answers
Let V be the vector space P3[x] of polynomials in x with degree less than 3 and W be the subspace
Pepsi [2]

By definition, the span of two vectors is the set of all possible linear combinations of said vectors. So, any element in W is obtaining by choosing two numbers a,b and building

a(7-8x-8x^2)+b(x^2-(5+6x)) = -8ax^2-8ax+7a+bx^2-6bx-5b

(a)

So, you can show a nonzero polynomial in W by choosing any values of a and b, as long as they're not both zero. To keep it as simple as possible, we can choose for example a=1, b=0 and we obtain one of the base vectors of W:

7-8x-8x^2

(b)

Factoring the powers of x, we see that a generic polynomial in W looks like

(b-8a)x^2-(8a+6b)x+7a-5b

So, we must build a polynomial

dx^2+ex+f

such that it is not possible that

\begin{cases}d=b-8a\\e=8a+6b\\f=7a-5b\end{cases}

For example, let's try the polynomial x^2+x+1

We should solve the system

\begin{cases}b-8a=1\\8a+6b=1\\7a-5b=1\end{cases}

And you can check that it has no solutions. So, the polynomial x^2+x+1 does not belong to W. On the other hand, it surely belongs to V, because it is a polynomial with degree less than 3. So, the polynomial x^2+x+1 belongs to V/W.

7 0
4 years ago
What are the formulas for trigonometry and pythagoras?
jasenka [17]
That's not a good question at all.  It's a lot like asking
"What are the statements for News and President Obama ?"

There are at least a hundred formulas that are useful in trigonometry.
One of the most useful is:

       In a right triangle, the square of the length of the hypotenuse
       is equal to the sum of the squares of the two short sides.

Pythagoras is the name of the ancient Greek mathematician who
discovered that formula.  The formula is so useful that it's known
by his name, in his honor.
7 0
3 years ago
47. Nitrogen makes up approximately 3 of the earth's atmosphere, and oxygen makes up about of the atmosphere. How much of the at
sladkih [1.3K]

Answer:

about 98 percent

Step-by-step explanation:

about 78.09% of the atmosphere is nitrogen and 20.95% of oxygen so when we add 78 and 20 we get 98% .Therefore about 98%of the earth is composed of nitrogen and oxygen

5 0
3 years ago
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