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wlad13 [49]
3 years ago
13

In general, why is a common denominator necessary to add and subtract fractions?

Mathematics
2 answers:
gogolik [260]3 years ago
5 0

Answer:

Step-by-step explanation:

makes it easier.

Lera25 [3.4K]3 years ago
4 0

Answer:

The denominator of a fraction tells you the relative size of the pieces. ... Therefore, the reason fractions need a common denominator before adding or subtracting is so that the numbers of pieces you are adding/subtracting are all the same size.

Step-by-step explanation:

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Can Anyone please solve this? Will mark brainiest!!!!
sergey [27]

Answer:

  (a) see attached

  (b) CD = 29

Step-by-step explanation:

<h3>(a) </h3>

See the attachment for a diagram.

In the diagram, we have shown point E on the plane so that BE is parallel to AC.

__

<h3>(b)</h3>

Triangle BDE is a right triangle with hypotenuse BD = 25 and leg BE = AC = 15. The length DE is given by the Pythagorean theorem as ...

  DE = √(BD^2 -BE^2) = √(625 -225) = 20

Triangle CDE is a right triangle with hypotenuse CD and legs CE = 21 and DE = 20. The length of the hypotenuse is also given by the Pythagorean theorem as ...

  CD = √(CE^2 +DE^2) = √(21^2 +20^2) = √841

  CD = 29

8 0
2 years ago
Do you have a cat and if so how old is he or she
stepladder [879]
To be honest in my opinion, without offending anyone or being condescending, and without triggering anyone, I just want to say I got nothing to say but I have none
4 0
2 years ago
Write −1/2x+y=10 in slope-intercept form.
Varvara68 [4.7K]

Answer:

y=\frac{1}{2} x+10

Step-by-step explanation:

-\frac{1}{2} x+y=10\\

<em>Add </em>\frac{1}{2} x<em> to both sides</em>

y=10+\frac{1}{2} x\\\\y=\frac{1}{2} x+10

6 0
4 years ago
Hey puddin could ya help me !?- What is the length of segment AB?
ycow [4]

Answer:

AB = 4\sqrt{5}

Step-by-step explanation:

Calculate AB using the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = A(6, 2) and (x₂, y₂ ) = B(0, 10)

AB = \sqrt{(0-6)^2+(10-2)^2}

     = \sqrt{4^2+8^2}

    = \sqrt{16+64}

    = \sqrt{80} = 4\sqrt{5} ← exact length

4 0
3 years ago
Help again...
Natali [406]

A: 25.12 (26 if your rounding)

B: You have to multiply R by 2 then by pi (3.14)

C: 10.5 (11 if your rounding)

Step-by-step explanation:

For a: A circle's circumference is its diameter multiplied by pi (3.14) To get the diameter you would multiple the radius by 2. Therefore your answer being 25.12 (Round to 26 if you want)

For c: Divide 65 by pi then that answer by two.

3 0
3 years ago
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