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3 years ago

Choose the correct simplification of the expression (−2x + 10y)(4x − 6y).

1 answer:

6 0

Well i have always gone by pemdas which is() exponits mulyiply or divide which ever comes first add subtract which ever comes first also

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.............................

Lynna [10]

Answer:

$\frac{18p-5}{30}$

Step-by-step explanation:

8 0

3 years ago

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Which of the following is equal to 7 1/4?

marysya [2.9K]

Answer:

Step-by-step explanation:

$7^{\tfrac 14} = \sqrt[4]{7}$

4 0

3 years ago

What is the solution to this system of linear equations 3x-2y=14 5x+y=32 brainly

xxTIMURxx [149]

Answer:

x = 6

y = 2

Step-by-step explanation:

7 0

3 years ago

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A= [2, 3; 2, 1], B=[3; 5]. Find AB & BA if possible

oksano4ka [1.4K]

Answer:

The value of AB is $\left[\begin{array}{ccc}21\\11\end{array}\right]$ and it's not possible to multiply BA.

Step-by-step explanation:

Consider the provided matrices.

$A=\left[\begin{array}{ccc}2&3\\2&1\end{array}\right]$ , $B=\left[\begin{array}{ccc}3\\5\end{array}\right]$

Two matrices can be multiplied if and only if first matrix has an order m × n and second matrix has an order n × v.

Multiply AB

Matrix A has order 2 × 2 and matrix B has order 2 × 1. So according to rule we can multiply both the matrix as shown:

$AB=\left[\begin{array}{ccc}2&3\\2&1\end{array}\right] \left[\begin{array}{ccc}3\\5\end{array}\right]$

$AB=\left[\begin{array}{ccc}2\times 3+3\times 5\\2\times 3+1\times 5\end{array}\right]$

$AB=\left[\begin{array}{ccc}6+15\\6+5\end{array}\right]$

$AB=\left[\begin{array}{ccc}21\\11\end{array}\right]$

Hence, the value of AB is $\left[\begin{array}{ccc}21\\11\end{array}\right]$

Now calculate the value of BA as shown:

Multiply BA

Matrix B has order 2 × 1 and matrix A has order 2 × 2. So according to rule we cannot multiply both the matrix.

We can multiply two matrix if first matrix has an order m × n and second matrix has an order n × v.

That means number of column of first matrix should be equal to the number of rows of second matrix.

Hence, it's not possible to multiply BA.

5 0

3 years ago

What is 4 hours and 39 mins before 7:53 p.m

Julli [10]

4 hours and 39 minutes before 7:53 p.m. Is 3:14 p.m.

5 0

3 years ago

Read 2 more answers