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3 years ago

A large rectangle has length a + b and width c + d. Therefore, its area is (a + b)(c + d).

Mathematics

1 answer:

melamori03 [73]3 years ago

6 0

Answer:

The area of four small rectangles are ac, bc, ad and bd.

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Find the point of intersection (if any) of the following pairs of lines: a) x – 2y +1=0 2x + 3y – 7 = 0 b) x-2y+11=0 -x+2y-13 =

pychu [463]

Answer:

a) (11/7, 9/7)

b) There's no point of intersection

Step-by-step explanation:

a) x - 2y + 1 = 0

2x + 3y - 7 = 0

To find the point of intersection, we need to solve the system of equations and the result will be the point of intersection (x,y)

$x-2y+1=0\\x= 2y-1$

Now we substitute x in the second equation:

$2x+3y-7=0\\2(2y-1)+3y-7=0\\4y-2+3y-7=0\\7y-9=0\\y=9/7$

Now we substitute y in our first equation.

$x-2y+1=0\\x-2(9/7)+1=0\\x-18/7+1=0\\x=18/7-1\\x=11/7$ .

The point of intersection is (11/7, 9/7)

b) x -2y +11 =0

-x + 2y - 13 =0

We are going to follow the same procedure:

$x-2y+11=0\\x=2y-11$

$-(2y-11)+2y-13=0\\-2y+11+2y-13=0\\0y=2\\0=2$

Since this system of equations doesn't have a solution, the system has no point of intersection.

5 0

3 years ago

2 times 2 times 13 what is the missing number

atroni [7]

The answer is 52 if you are looking for the answer to 2x2x13=? then it is 52. Otherwise idk what you are asking.

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3 years ago

What ides it mean by simplify?

MrRissso [65]

Putting it in simpler terms

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3 years ago

Guys I just went poop and there's no toilet paper please help what do I do oh my godddd

iogann1982 [59]

Answer:

Use water to clean yourself and than just wash your hands afterward lol

Step-by-step explanation:

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3 years ago

The square below represents a unit or a whole. What fraction is represented by the

Mkey [24]

20/28 or 10/14 or 5/7
You can keep reducing until both sides of the fraction can't be divided by the same number anymore.

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3 years ago