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2 years ago

The binomial expression (x+2) (x+3) can be rewritten by using the distributive laws as x(x+3) + 2(x-3)

Mathematics

1 answer:

stepan [7]2 years ago

5 0

Answer:

my answer is x(x+3) + 2(x - 3)

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if a certain aircraft can travel 1330 with with the wind in 5hrs and travel the same distance against the wind in 7hrs. what is

Arlecino [84]

190mph

I used speed calculator with advanced mode

HTTP://www.omnicalculator.com/everyday-life/speed

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2 years ago

If two of the four expressions x + y, x + 5y, x – y, and 5x – y are chosen at random, what is the probability that their product

storchak [24]

Answer:

1/6

Step-by-step explanation:

The product will only be of the required form if the two chosen factors are of the form (x +by) and (x -by).

For the factor (x+y), there is also a factor (x-y) on the list. For the factor (x+5y), there is no factor (x-5y) available.

So, of the (4·3)/2 = 6 possible ways to choose two expressions from the four given expressions, only one pair of the 6 will have a product of the required form.

The probability is 1/6.

8 0

3 years ago

What is the slope of line B?

N76 [4]

Answer:

3. do rise over run to get 3/1 and that simplifies to 3!

Step-by-step explanation:

4 0

3 years ago

Select the correct answer.

Julli [10]

Answer:

Your answer for the above equation is D

3 0

2 years ago

See question in attached photo.

statuscvo [17]

9514 1404 393

Answer:

(a, b) = (-2, -1)

Step-by-step explanation:

The transpose of the given matrix is ...

$A^T=\left[\begin{array}{ccc}1&2&a\\2&1&2\\2&-2&b\end{array}\right]$

Then the [3,1] term of the product is ...

$(A\cdot A^T)_{31}=\left[\begin{array}{ccc}a&2&b\end{array}\right]\cdot\left[\begin{array}{ccc}1&2&2\end{array}\right]=a+2b+4$

and the [3,2] term is ...

$(A\cdot A^T)_{32}=\left[\begin{array}{ccc}a&2&b\end{array}\right]\cdot\left[\begin{array}{ccc}2&1&-2\end{array}\right]=2a-2b+2$

Both of these terms in the product matrix are 0. We can solve the system of equations by adding these two terms:

(a +2b +4) +(2a -2b +2) = (0) +(0)

3a +6 = 0

a = -2

Substituting for 'a' in term [3,1] gives ...

-2 +2b +4 = 0

b = -1

The ordered pair (a, b) is (-2, -1).

8 0

2 years ago