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3 years ago

Mrs. Kemsley’s family always travels to a relative's

Mathematics

1 answer:

Gnoma [55]3 years ago

3 0

1h 35min + 1h 35min = 3h 10min

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Divide (-2x-3+8x^2) by (1 + 4x)

Strike441 [17]

Answer:

8x^2-2x-3/1+4x

Step-by-step explanation:

It doesn't say any of your answers but i just used a calculator and that's what i got

Sorry if its wrong

8 0

3 years ago

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 the total cost of the menu? The total cost of the menu is $______ (approximately 2 decimal places)

stiks02 [169]

Answer:

4.67

Step-by-step explanation:

0.25 + 0.50 + 0.75 + 1.25 + 1.875 = 4.675

5 0

2 years ago

3x+8y=15 , 2x−8y=10

faltersainse [42]

I think is should be (5,0)

3 0

3 years ago

Read 2 more answers

What is the solution to the equation?

Lisa [10]

$3q + 5 = -2q + 20$

add 2q to both sides.

$5q + 5 = 20$

subtract 5 to both sides.

$5q = 15$

divide 5 to both sides.

$q = \frac{15}{5}$

the answer is: $q = 3$

5 0

3 years ago