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leonid [27]
3 years ago
12

7.

Mathematics
1 answer:
Masteriza [31]3 years ago
5 0
Just really think about it
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Can the expression √7+2√10 be simplified using the distributive property?
Setler [38]

Answer:

Yes,  \sqrt{2}(\sqrt{3.5}  + 2\sqrt{5} )

Step-by-step explanation:

By roots property, the roots can be re-write as multiplications or division, like this:

\sqrt[n]{a} . \sqrt[n]{b} =\sqrt[n]{ab}

Here, we can re-write both roots:

\sqrt{7} = \sqrt{3.5*2} and \sqrt{10}=\sqrt{2*5}

Now we have:

\sqrt{3.5} * \sqrt{2}  + 2 * \sqrt{2} *\sqrt{10}

And we can take out the common expression:

\sqrt{2}(\sqrt{3.5}  + 2\sqrt{5} ) ⇒ Answer

6 0
3 years ago
What are the exact solutions of sin2x+sinx-2cox-1=0?
Alex_Xolod [135]

sin2x+sinx-2cox-1=0

As we know, Sin 2x =2sinx cosx

2Sinx Cosx+Sinx-2cosx-1=0

Sinx(2cos x+1)-1(2cosx+1)=0

(sinx-1)(2cosx+1)=0

So, either sinx-1=0 or 2cos x+1=0

Sin x=1 or cos x=\frac{-1}{2}

x=\frac{\pi}{2} or multiples of \frac{\pi}{2}

x=\frac{2\pi}{3} or multiples of \frac{2\pi}{3}

x=\frac{-2\pi}{3} or multiples of \frac{-2\pi}{3}

6 0
3 years ago
describe the shape Center and spread of data distribution. are ther any outliers numbers 12 10 11 9 9 10 12 9 8 7 9 10
Ludmilka [50]
No, there are not any outliers because all of the numbers are relatively close in value
3 0
3 years ago
3x-z+2x+3y+2x<———— Can you please help me with solving this expression please?
SVETLANKA909090 [29]

Answer:

7x+3y-z

Step-by-step explanation:

Starting off by separating the different variables, you should get:

(3x + 2x ) + (-z + 2z) + (3y)

Then you simplify in between the parentheses...

(5x) + (z) + (3y)

And you finally simplify the equation with only a single number of a certain variable to get your answer...

5x + z + 3y

4 0
3 years ago
Please help!! Thanks in advance!! NO links!!
Yuki888 [10]
I can’t really answer this because I don’t know how many numbers is on the first spiner and I don’t know how many coolers are on the other spiner
4 0
3 years ago
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