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3 years ago

Find the difference 7 7/8- 3 1/4

1 answer:

8 0

The mixed number have to become a improper fraction and then you have to subtract like this.

so 7 7/8 you have to multiply 7 times 8 and then add it by 7 .
You do the same thing with the other mixed number 3 times 4 plus 1

So the first one is 63/8 - 13/4 =

first the 4 in the 13/8 have to become 8 . so you do 4 times 2 = 8 and multiply the 13 by 2 = 26 .
so equal

63/8 - 26/8 = then you have to do 63 - 26 = 37 so is 37/8 and then simplify or divide .

when you divide you suppose to get 4 5/8

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3 years ago

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Option given in the top right.

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3 years ago

What is the perimeter of the rectangle shown on the coordinate plane, to the nearest tenth of a unit?

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Answer:

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Step-by-step explanation:

Let the rectangle ABCD

so, co-ordinate of A= (-6,4) = (x1,y1)

co-ordinate of B= (4,2) = (x2,y2)

co-ordinate of C= (3,-3) = (x3,y3)

co-ordinate of D= (-7,-1) = (x4,y4)

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AB = CD ( opposite sides of rectangle are equal)

and, AD = BC ( opposite sides of rectangle are equal)

Now, using distance formula

AB = √(x2-x1)² + (y2-y1)²

=√(4-(-6))²+ (2-4)²

=√(4+6)² + (-2)²

=√(10)² + (4)

=√100+4

=√104

=2√26 units

so,AB = CD = 2√26 units

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BC = √(x3-x2)² + (y3-y2)²

=√(3-4)² + ( -3-2)²

=√(-1)² + (-5)²

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