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slega [8]
3 years ago
5

Expand: x(3 + 9). please

Mathematics
1 answer:
Oksi-84 [34.3K]3 years ago
8 0

Answer:

x(3 + 9) = 3x + 9x = 12x

Step-by-step explanation:

...........

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Find the perimeter and area of each figure.​
Sergio039 [100]

Answer:

  1. A = 2x; P = 4x+2. A = 4; P = 10.

  2. A = y² +2; P = 4y +2. A = 27; P = 22.

Step-by-step explanation:

1. The area is the sum of the marked areas of each of the tiles:

  A = x + x

  A = 2x

__

The perimeter is the sum of the outside edge dimensions of the tiles. Working clockwise from the upper left corner, the sum of exposed edge lengths is ...

  P = 1 + (x-1) + x + 1 + (x+1) + x

  P = 4x +2

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When x=2, these values become ...

  A = 2·2 = 4 . . . . square units

  P = 4·2+2 = 10 . . . . units

_____

2. Again, the area is the sum of the marked areas:

  A = y² + 1 + 1

  A = y² +2

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The edge dimension of the square y² tile is presumed to be y, so the perimeter (starting from upper left) is ...

  P = y +(y-2) +1 +2 +(y+1) +y

  P = 4y +2

__

When y=5, these values become ...

  A = 5² +2 = 27 . . . . square units

  P = 4·5 +2 = 22 . . . . units

4 0
3 years ago
Tell whatever the ordered pair is a solution of the given system.
bagirrra123 [75]
1. No 2. Yes 3. No
I’m pretty sure
5 0
3 years ago
The person who signs the bottom of a check is known as the ___________.
Anon25 [30]
Its known as the signature line 
4 0
3 years ago
Read 2 more answers
The rectangle is the image after a dilation with the center of dilation at the origin of rectangle ABCD. The pre-image of A prim
lidiya [134]

9514 1404 393

Answer:

  (a)  The scale factor is 2.5 and the coordinates of point C are (–2.4, –0.8)

Step-by-step explanation:

We are given ...

  A(-4, 3.2) and A'(-10, 8)

  C'( -6, -2)

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The scale factor is the ratio of corresponding coordinates:

  A'x/Ax = -10/-4 = 2.5 . . . scale factor

Then the coordinates of C will be ...

  C' = 2.5C

  C = C'/2.5 = (-6, -2)/2.5

  C = (-2.4, -0.8)

5 0
2 years ago
Read 2 more answers
The distance on a numberline from -10 to 3 is equal to 5x-12.
Viefleur [7K]

Answer:

  1. 13
  2. x = 5

Step-by-step explanation:

To find the total distance, we can add.

10 + 3 = 13

Now, we can use 13 to solve for the equation that is the same.

5x - 12 = 13

5x = 25

x = 5

Best of Luck!

6 0
3 years ago
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