Ask question

Ask question

All categories

sleet_krkn [62]

3 years ago

6

Convert each rate using dimensional analysis. Round to the nearest tenth, if necessary. 45 mi/h = ___ ft/s a. 66 c. 26.4 b. 15.6

d. 19.2

2 answers:

vovikov84 [41]3 years ago

8 0

I get A for this one.....66

Serjik [45]3 years ago

8 0

Here you need to make sure that your units cancel. You should end up with units of ft/sec. You should get 66 ft/sec so the correct answer is a

You might be interested in

A number and +7 is less than or equal to nine

pychu [463]

7 is less than nine

8 0

3 years ago

adoni [48]

Step-by-step explanation:

CCTV cameras in a bit more of the day I will have a great time and where is the only thing that has to do with it

7 0

2 years ago

Estimate the difference.<br><br> 9,136 - 3,572

olga2289 [7]

Answer:

5500..?

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

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

How many terms does the polynomial have?

ollegr [7]

Answer: 4

Step-by-step explanation:

There are 4 terms, $p^3,4pq^2,q^2,3q$

4 0

2 years ago