2 1/2 + 3 As a fraction or a mixed number in simplest form. please Thankss ;p

Mathematics

2 answers:

Romashka [77]3 years ago

7 0

2 1/2 +3

pretend that there is a denominator for 3 which is 1

2 1/2 +3/1

find the common denominator for 3/1 which is 2

multiply by 2 for 3/1

3(2)/1(2)=6/2

2 1/2 +6/2

make 2 1/2 into a fraction

multiply 2*2 first

2*2=4

add 4 with the numerator

4+1=5

2 1/2=5/2

5/2+6/2

=11/2

= 5 1/2

answer: 11/2 or 5 1/2

puteri [66]3 years ago

5 0

5 1/2 i think is the answer

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Midpoint formula = (x1 + x2)/2 + (y1 + y2)/2
Midpoint = (2 + 8)/2 + (3 + 1) / 2
Midpoint = 10/2 + 4/2
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Equation CD
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Equation y = 3x - 13

Using Distance to get D
d^2 = (x1 - x2)^2 + (y2 - y1)'^2
d^2 = (x2 - 5)^2 + (y2 - 2)^2
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10 = x2^2 - 10x2 + 25 + (3x2 - 13 - 2)^2
10 = x2^2 - 10x2 + 25 + (3x2 - 15)^2
10 = x1^2 - 10x2 + 25 + 9x^2 - 90x2 + 225
10 = 10x2^2 - 100x2 +250
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0 = x2^2 - 10x^2 + 24
0 = (x2 - 6)(x2 - 4)

x2 = 6 or
x2 = 4

Using y2 = 3x - 13
for x2 = 4
then y2 = 3(4) - 13
y2 = - 1

for x2 = 6
y2 = 3*6 - 13
y2 = 5

Possible Answers for D
D = (4,-1)
D = (6,5)

I've included a graph to show a graphical solution.

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