All categories

1 year ago

Help Equation in the screenshot

Mathematics

1 answer:

Mama L [17]1 year ago

7 0

The value of point A21 in the matrix will be 6. The correct option is A.

<h3>What is a matrix?</h3>

A matrix, which is used to represent a mathematical object or an attribute of one, is a rectangular array or table containing numbers, symbols, or expressions that are organized in rows and columns.

The given matrix is:-

$A=\left[\begin{array}{cccc}10&4&11&12\\6&3&2&8\\\end{array}\right]$

The position of the numbers in the matrix is represented by the element Aij, where i is the number of the rows and j is the number of the columns.

For A₂₁ the position is the second row and the first column. At position A₂₁ the number is 6.

Therefore, the value of point A21 in the matrix will be 6. The correct option is A.

To know more about matrix follow

brainly.com/question/11989522

#SPJ1

You might be interested in

Solve for u -2/9u=10

Nata [24]

Answer:

$u = -45$

Step-by-step explanation:

<u>Step 1: Multiply both sides by -9/2</u>

<u /> $-\frac{2}{9}u = 10$

$-\frac{9}{2} *-\frac{2}{9}u = 10 * -\frac{9}{2}$

$u = -\frac{90}{2}$

$u = -45$

Answer: $u = -45$

8 0

3 years ago

Show that sec^2x+csc^2x/sec^2xcsc^2x

professor190 [17]

Answer:

$\frac{1}{csc^{2}(x)}+\frac{1}{sec^{2}(x)}$

Step-by-step explanation:

The image below shows step-by-step on how to solve it.

<em>Hope this helps! </em>:)

4 0

2 years ago

Mixed numbers greater than 6 but less than 7 use an interval of 1/6 between each pair of numbers

GaryK [48]

Answer:

$[6\frac{1}{6},6\frac{1}{3},6\frac{1}{2},6\frac{2}{3},6\frac{5}{6}]$

Step-by-step explanation:

we have the compound inequality

$6 < x < 7$

where

x is a mixed number

The solution for the compound inequality are the numbers

$[6\frac{1}{6},6\frac{2}{6},6\frac{3}{6},6\frac{4}{6},6\frac{5}{6}]$

Simplify the numbers

$[6\frac{1}{6},6\frac{1}{3},6\frac{1}{2},6\frac{2}{3},6\frac{5}{6}]$

5 0

2 years ago

A sphere is inscribed in a cube with a surface area of 216 square centimeters. What is the volume of the sphere

pentagon [3]

Answer:

$V=298.5cm^3$

Step-by-step explanation:

To find the volume of the sphere we need to know its radius.

And the radius can be found with the information we have about the surface area.

The formula for the surface area is as follows:

$SA=4\pi r^2$

from this formula we clear the radius r:

$r^2=\frac{SA}{4\pi}\\ \\r=\sqrt{\frac{SA}{4\pi} }$

and we substitute the known value of the surface area, and also the value of $\pi$ :

$r=\sqrt{\frac{216cm^2}{4(3.1416)} }\\ \\r=\sqrt{\frac{216cm^2}{12.5664} }\\ \\r=\sqrt{17.1887cm^2}\\ \\r=4.146cm$

and now that we know the radius we find the volume:

$V=\frac{4\pi r^3}{3} \\\\V=\frac{4(3.1416)(4.146cm)^3}{3}\\ \\V=\frac{895.521cm^3}{3}\\ \\V=298.5cm^3$

the volume of the sphere is $298.5cm^3$

7 0

2 years ago

Please help. I don't understand anything.

alina1380 [7]

Answer:

Step-by-step explanation:

The area of figure=Area of rectangle+Area of triangle

Area of figure=(x+2)(x-3)+1/2*(x)*(x+2)

Area of figure=x^2-x-6+0.5*x^2+x

Area of figure=(3/2)x^2-6

7 0

2 years ago

Read 2 more answers