1 year ago

(((20 POINTS)))

Mathematics

1 answer:

Vilka [71]1 year ago

3 0

Answer:

4.7 cm

Step-by-step explanation:

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The combined area of a pair of congruent rectangles can be represented, in square units, by the expression 18y^2-818y 2 −8. The

sveta [45]

Answer:

$Perimeter = 12y$

Step-by-step explanation:

Given

$Area = 18y^2 - 8$ -- two rectangles

Required

Determine the perimeter of one of the rectangles

First, calculate the area (A) of 1 rectangle

$A =\frac{1}{2}Area$

$A =\frac{1}{2}(18y^2 - 8)$

$A =9y^2 - 4$

Express as difference of two squares

$A =(3y - 2)(3y+2)$

Area is calculated as:

$A = Length * Width$

So, by comparison:

$Length = 3y - 2$

$Width = 3y + 2$

The perimeter is:

$Perimeter = 2 *(Length + Width)$

$Perimeter = 2 *(3y-2+3y+2)$

Collect Like Terms

$Perimeter = 2 *(3y+3y-2+2)$

$Perimeter = 2 *(6y)$

$Perimeter = 12y$

8 0

2 years ago

In the given diagram, which of the following can you use to prove that triangle ABC is an isosceles triangle?

docker41 [41]

The answer is D) I just went over this.

6 0

3 years ago

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Given: F(x) = x + 2 and G(x) = 3x + 5 (F - G) (x) = 1) 4 2) -3x - 3 3) -2x - 3

mamaluj [8]

This equation is telling you to subtract the value of f(x) from the value of g(x).

f(x)= x + 2
g(x) = 3x + 5

so x + 2 - 3x -5 = -2x-3

4 0

3 years ago

Solve the system of equations -2x-3y=48 and -x+2y=-11 by combining the equations to find x and y ( , )

adoni [48]

Answer:

the first one is x=-3(16+y/2

secone one is x=11+2y

Step-by-step explanation:

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2 years ago

¿Cuál de las siguientes fracciones es equivalente al decimal 0.18? ~= Ello

kow [346]

Answer:

? necesitamos más información.. ¿dónde están los fracciones?

Step-by-step explanation:

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3 years ago