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4 years ago

Which expression is equivalent to x+11A.11x B. 11+xC 11-xD.-x+11

Mathematics

2 answers:

Ksju [112]4 years ago

6 0

Answer:

B. 11+x

Explanation:

Its the answer because in B it's the same as x+11 but in an opposite way.

11+x

x+11

Galina-37 [17]4 years ago

3 0

Hey there!

Your answer is:

$\boxed{B. 11+x}$

Both terms x and 11 are positive, so we can't have C or D. They both subtract something, have negative signs.

11x is x times 11, not x plus 11. It's 11 x's, not x and 11. So A is incorrect.

B is correct. It is two separate terms, both positive, added together.

Hope this helps!

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What is the product?

ZanzabumX [31]

Answer:

The product is:

$\left[\begin{array}{cc}15 & 14\\-1 & 9\end{array}\right]$

Step-by-step explanation:

For this problem you need to multiply the first row only for the two first column of the others matrix and get the desired result:

$\left[\begin{array}{ccc}1&3&1\\-2&1&0\end{array}\right] \times \left[\begin{array}{cc}2&-2\\3&5\\4&1\end{array}\right]$

$1 \times 2 + 3 \times 3 + 1 \times -2 = 15$

So the value of the element in the position $a_{11}$ is 15

$1 \times -2 + 3 \times 5 + 1 \times 1 = 14$

So the value of the element in the position $a_{12}$ is 14

Then with these two values you can determinate the result matrix.

$\left[\begin{array}{cc}15 & 14\\-1 & 9\end{array}\right]$

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Which expression is equivalent to x+11A.11x B. 11+xC 11-xD.-x+11​

Which expression is equivalent to x+11A.11x B. 11+xC 11-xD.-x+11