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3 years ago

The matrices shows the number of dance students enrolled in each type of class for two different years.

Mathematics

2 answers:

just olya [345]3 years ago

7 0

Answer:

The correct answer is C.

Step-by-step explanation:

In order to find the answer, we need to subtract the corresponding areas. In order to find the change, we subtract the first matrix from the second. If we look at the numbers in the top right we see.

9 - 21 = -12

Since C is the only one with -12 in the top right corner, it must be the correct matrix.

Scorpion4ik [409]3 years ago

3 0

Answer:

n54

Step-by-step explanation:

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a box of socks contain 5 white socks 3 grey socks 4 black socks and 1 blue sock. is Sophie closes her eyes and randomly pick two

pantera1 [17]

Answer:

3 out of 13 chance of getting grey socks

5 0

3 years ago

Mrs. Ishimitsu is installing a rubber bumper around the edge of her coffee table. The dimensions of the rectangular table are (2

ollegr [7]

Answer:

$2x^2+8x-30$ represents the total perimeter of the table, and if x = 3 the lentgh of entire rubber bumper is 12 feet.

Step-by-step explanation:

Perimeter is defined as the sum of sides.

For a rectangle having dimension length 'L' and breadth 'B' Since, rectangle has two sides equal.

Perimeter of rectangle = 2 ( length + breadth )

Here, given rectangle has dimension

Length = $2x^2-16$ and breadth = $-x^2+4x+1$

Thus, perimeter of rectangle = $2(2x^2-16+(-x^2+4x+1))$

$=2(2x^2-16-x^2+4x+1)$

$=2(x^2+4x-15)$

$=2x^2+8x-30$

Thus, perimeter of rectangle is $2x^2+8x-30$ ........(1)

Perimeter of rectangle , when x = 3,

Put x= 3 in (1) ,

$2x^2+8x-30\Rightarrow 2(3)^2+8(3)-30 \Rightarrow 18+24-30=12$

Thus, $2x^2+8x-30$ represents the total perimeter of the table, and if x = 3 the lentgh of entire rubber bumper is 12 feet.

5 0

3 years ago

Read 2 more answers

Write a linear equation in standard form that crosses (4, -3) and (-2, 9):

kirill115 [55]

Slope =(9+3)/(-2-4) = 12/-6 = -2
Y+3 = -2 (×-4) => y=-2×+5
D is the line asked
Slope: -1/3
D: y-6 = -1/3 (×-3) or y= -1/3× + 7

8 0

3 years ago

Solve for x: 7x = 63

elena55 [62]

Answer:

x = 9

Step-by-step explanation:

7x = 63

Divide each side by 7 to isolate x

7x/7 = 63/7

x = 9

4 0

3 years ago

Read 2 more answers

Differentiate the function:<br> y=x^3+2x-1

RUDIKE [14]

Answer:dy/dx=3x^2 + 2

Step-by-step explanation:

y=x^3 + 2x - 1

dy/dx=3x^2 + 2

7 0

3 years ago