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4 years ago

Choose which of the following are true statements regarding matrices:

2 answers:

6 0

<span>b) If two rows are identical in a matrix then there are infinitely many solutions
c) A 3-by-2 matrix and a 2-by-3 matrix have the same number of elements</span>

Brilliant_brown [7]4 years ago

6 0

C A 3-by-2 matrix and a 2-by-3 matrix have the same number of elements because on the periodic table it show the both combinations as elements... so 3+2= 5 and 2+3=5 so they both have 5 elements!

Hope this helps! B-)

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HELP URGENT STEP FUNCTIONS!!!!!!! Used books cost $2.25 each. Which expression represents the total number of books that can be

irinina [24]

Answer:

A. $\left \lfloor \frac{10}{2.25} \right \rfloor$

Step-by-step explanation:

We are given,

The cost of one book = $2.25

Since, it takes $2.25 to buy 1 book.

The, for $10, we can get $\frac{1}{2.25}\times 10$ i.e. $\frac{10}{2.25}$ = 4.44

Since, number of books cannot be in decimals.

So, the closest integer to 4.44 is 4.

Hence, we can buy 4 books from $10.

Now, according to the options:

A. $\left \lfloor \frac{10}{2.25} \right \rfloor = \left \lfloor 4.44\right \rfloor = 4$

B. $\left \lceil \frac{10}{2.25} \right \rceil = \left \lceil 4.44 \right \rceil=5$

C. $\frac{10}{\left \lceil 2.25\right \rceil} =\frac{10}{3} =0.33$

D. $\frac{10}{\left \lfloor 2.25\right \rfloor} = \frac{10}{2} = 5$

Hence, we see that from the options, A is correct.

3 0

3 years ago

Read 2 more answers

3 points

stich3 [128]

Step-by-step explanation:

2x + 100 = 90

x = -5

Angle A = 45 - 5 = 40.

6 0

3 years ago

A square has an area of 256 square meters. How long is each side?<br><br> _Meters by _ meters

Lorico [155]

Hello!

First, let's write an equation for the problem.
$\sqrt{256}$

Now, all you have to do is solve it.
$\sqrt{256}$ = 16

Each side is 16 meters.

I hope this helps!

7 0

3 years ago

Lost all factor pairs of 50

Genrish500 [490]

Answer:

(5, 10 ) ( 2, 25 )

Step-by-step explanation:

6 0

3 years ago

Please help me with this question!

BigorU [14]

The answer is 8.8

You have to use SohCahToa to figure out the length of AB