All categories

2 years ago

Consider the Matrix shown below:

Mathematics

1 answer:

shepuryov [24]2 years ago

3 0

Answer:

The value of $B_{2,4}$ - $B_{3,2}$ is 3 ⇒ 2nd

Step-by-step explanation:

The dimensions of any matrix are (m × n), where

m is the number of its row
n is the number of its column

Ex: Matrix A of dimensions (2 × 3) has 2 rows and 3 columns, where

$A_{1,1}$ means the element in the 1st row and 1st column

$A_{1,2}$ means the element in the 1st row and 2nd column

$A_{1,3}$ means the element in the 1st row and 3rd column

$A_{2,1}$ means the element in the 2nd row and 1st column

$A_{2,2}$ means the element in the 2nd row and 2nd column

$A_{2,3}$ means the element in the 2nd row and 3rd column

Now lets solve the problem

∵ The matrix B has 3 rows

∴ m = 3

∵ The matrix B has 4 columns

∴ n = 4

∴ The dimensions of matrix B are (3 × 4)

∵ $B_{2,4}$ means the element in the 2nd row and 4th column

∴ $B_{2,4}$ = 9

∵ $B_{3,2}$ means the element in the 3rd row and 2nd column

∴ $B_{3,2}$ = 6

- Find the value of $B_{2,4}$ - $B_{3,2}$

∵ $B_{2,4}$ - $B_{3,2}$ = 9 - 6

∴ $B_{2,4}$ - $B_{3,2}$ = 3

You might be interested in

Need help asap please!!<br> This is the only one i don’t know i’m stuck!

lyudmila [28]

Answer:

Reminder that is this form a(b)^x where a > 0

When b > 0 but < 1 that is a decay function

When b > 1 than its a growth function

Step-by-step explanation:

So following this you can figure out the answer

g(x)=0.3(x)

this is neither since there is no exponent (linear)

H=72(56)^t

this is growth since b = 56

A=(43)^t

this is growth since b = 43 ("a" is understood as "1")

H=5.9(0.82)^t

this is decay since b = 0.82

y=0.8(3.6)^t

this is growth since b = 3.6

f(t)=0.72(15)^t

this is growth since b = 14

A=49(8)^t

this is growth since b = 8

6 0

2 years ago

How much is f(10) if f=x^2-2

dangina [55]

To find this value, simply substitute the number 10 in for x in your equation:

$f(x) = x^2 - 2$

$f(10) = 10^2 - 2 = \boxed{98}$

The answer is 98.

8 0

2 years ago

Write a real word problem for 55x = 1,045

Lady bird [3.3K]

Bob was selling some toys. Every toy cost 55 dollars and he made 1045 dollars in profit on that exact day. How many toys did Bob make on that day?

7 0

1 year ago

Read 2 more answers

Adam sleeps for nine hours each night, five nights a week, and 11 hours for two nights a week.

melisa1 [442]

Answer:

Step-by-step explanation:

3 0

2 years ago

(4x + 4)(ax – 1) – x2 +4

Oksana_A [137]

Answer:

b=-3

Step-by-step explanation:

If the expression simplifies to bx that means the $x^{2}$ terms and the constant terms must be cancel out.

Simplify it first.

$(4x+4)(ax-1)-x^{2} +4\\=(4ax^{2} -4x+4ax-4)-x^{2} +4\\=4ax^{2} -x^{2} -4x+4ax-4+4\\=4ax^{2} -x^{2} -4x+4ax$

We know –4 + 4 will cancel out. If we simplify this expression to only an x term, then the $x^{2}$ terms should be cancelled. Therefore, we say that 4ax^2 – x^2 = 0.

$4ax^{2} -x^{2} =0\\x^{2} (4a-1)=0\\4a-1=0\\4a=1\\a=\frac{1}{4}$

If we put a = ¼, then we can find the value of b:

$=4(\frac{1}{4} )x^{2} -x^{2} -4x+4(\frac{1}{4} )x\\=x^{2} -x^{2} -4x+x\\ (cancel out x^{2} terms)\\$

$=-3x$

$bx=-3x\\$ if the expression is equivalent to bx

Therefore, b = –3.

8 0

2 years ago