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swat32
3 years ago
8

6) Which expression is equivalent to

Mathematics
1 answer:
vagabundo [1.1K]3 years ago
6 0
The answer to this question is A.
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Find the value of 3<img src="https://tex.z-dn.net/?f=%5Csqrt%7Bx%7D" id="TexFormula1" title="\sqrt{x}" alt="\sqrt{x}" align="abs
Alex

Answer:

The answer is

<h2>22</h2>

Step-by-step explanation:

3√x + 7

x = 25

Substitute the value of x into the expression

That's

3(√25) + 7

√25 = 5

So we have

3(5) + 7

= 15 + 7

<h3>= 22</h3>

Hope this helps you

8 0
3 years ago
How to get the answers?​
beks73 [17]

By inclusion/exclusion,

n(P' \cup Q) = n(P') + n(Q) - n(P' \cap Q)

We have

n(\xi) = n(P) + n(P') \implies n(P') = 28 - n(P)

so that

n(P'  \cup Q) = (28 - n(P)) + n(Q) - 2n(P) = 28 - 3n(P) + n(Q)

Now,

n(\xi) = 28 \implies n(P \cup Q) = 28 - 7 = 21

and by inclusion/exclusion,

n(P \cup Q) = n(P) + n(Q) - n(P \cap Q)

Decompose Q into the union of two disjoint sets:

Q = (P \cap Q) \cup (P' \cap Q)

Since they're disjoint,

n(Q) = n(P\cap Q) + n(P'\cap Q) \implies n(Q) = n(P\cap Q) + 2n(P)

\implies n(P \cup Q) = n(P) + (n(P\cap Q) + 2n(P)) - n(P \cap Q)

\implies 21 = 3n(P)

\implies n(P) = 7

From the Venn diagram, we see there are 3 elements unique to P - by the way, this is the set P \cap Q' - so n(P\cap Q) = 7-3 = 4, and it follows that

n(Q) = n(P\cap Q) + 2n(P) = 4 + 2\times7 = 18

Finally, we get for (a)

n(P' \cup Q) = 28 - 3n(P) + n(Q) = 28 - 3\times7 + 18 = \boxed{25}

For (b), we have by inclusion/exclusion that

n(P \cup Q') = n(P) + n(Q) - n(P \cap Q') = 7 + 18 - 3 = \boxed{22}

5 0
2 years ago
Define a matrix in words​
MrMuchimi

Answer:

<u>The rectangular array of data enclosed in large bracket [ ] or a round small ( ) bracket is called a matrix.</u>

According to order of matrix or value of elements, we can classify the matrices. Some of the types of matrices are as follows:

  • Column Matrix
  • Row matrix
  • Square matrix
  • Rectangular matrix
  • Null matrix (zero matrix)
  • diagonal matrix
  • Unit matrix
  • Scalar matrix
  • Triangular matrix
  • Symmetric matrix
  • Skew-symmetric matrix
  • Equal matrix

<h3>Read more on:</h3>

brainly.com/question/16990997

Hope this helps.

Good luck on your assignment..

5 0
3 years ago
Five divided by two multiplied by six
max2010maxim [7]
I think the answer is 15, because 5 divided by 2 is 2.5. 2.5 times 6 is 15

5 0
3 years ago
Read 2 more answers
5 mile equals what in yards
vagabundo [1.1K]
8800 that’s the right answer
7 0
3 years ago
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