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Alexandra [31]
2 years ago
8

What are the dimensions of a rectangle with an area of 18 square inches and a perimeter of 18 inches? A) 9 in. x 2 in.B) 5 in. x

4 in.C) 6 in. x 3 in.D) 8 in. x 1 in.
Mathematics
2 answers:
kenny6666 [7]2 years ago
7 0

Answer:

C) 6 in. x 3

Step-by-step explanation:

  • area of rectangle: length * width
  • perimeter of rectangle: 2(length + width)

<u>using the formula</u>:

area:

6 * 3

18 in²

perimeter:

2( 6 + 3)

2(9)

18 in

Hence proved that C is the right answer.

Alina [70]2 years ago
4 0

Answer:

C

Step-by-step explanation:

Area: 6 \times 3 = 18

Perimeter: 2 \times (6  + 3) = 18

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3 years ago
What are the coordinates of each point after quadrilateral ABCD is reflected across the y-axis and then translated 2 units down?
zheka24 [161]

Answer:

A" =(-1,-1)    B" =(-2,1)

C" =(-4,1)    D" =(-5,-1)

Step-by-step explanation:

Given

A = (1,1)        B =(2,3)

C = (4,3)        D = (5,1)

Required

The new coordinates after reflected across y-axis and shifted 2 units down

When a point is reflected across the y-axis, the rule is:

(x,y)=>(-x,y)

So:

A = (1,1) => A' = (-1,1)

B =(2,3) => B' = (-2,3)

C = (4,3) => C' = (-4,3)

D = (5,1) => D' = (-5,1)

When a point is translated 2 units down, the rule is:

(x,y) => (x,y-2)

So:

A = (1,1) => A' = (-1,1) => A" =(-1,-1)

B =(2,3) => B' = (-2,3) => B" =(-2,1)

C = (4,3) => C' = (-4,3)=> C" =(-4,1)

D = (5,1) => D' = (-5,1) => D" =(-5,-1)

So, the new coordinates are:

A" =(-1,-1)    B" =(-2,1)

C" =(-4,1)    D" =(-5,-1)

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5x-4

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2 years ago
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