Adding fractions 5 over 10 + 1 over 3

Mathematics

2 answers:

Mashcka [7]2 years ago

8 0

Answer:

5/6

Step-by-step explanation:

5/10 can be simplified as 1/2

1/2 + 1/3 = 3/6 + 2/6 = 5/6

N76 [4]2 years ago

6 0

Answer:

5/6

Step-by-step explanation:

Find the greatest common factor which is 30. Divide the GCF by the denominator. Whatever the quotient is, is how much you need to multiply the numerator by. Simplify 25/30 by dividing by 5.

Hope this helps!

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Write the following quotient in the form a+bi.<br> -7i/2-7i

Helga [31]

Answer:

$\large\boxed{\dfrac{49}{53}-\dfrac{14}{53}i}$

Step-by-step explanation:

$\text{Use}\\\\i=\sqrt{-1}\to i^2=-1\\\\(a-b)(a+b)=a^2-b^2\to(a-bi)(a+bi)=a^2+b^2\\\\\text{distributive property}\ a(b+c)=ab+ac\\---------------------\\\\\dfrac{-7i}{2-7i}=\dfrac{-7i}{2-7i}\cdot\dfrac{2+7i}{2+7i}=\dfrac{-7i(2+7i)}{2^2+7^2}=\dfrac{(-7i)(2)+(-7i)(7i)}{4+49}\\\\=\dfrac{-14i-49i^2}{53}=\dfrac{-14i-49(-1)}{53}=\dfrac{-14i+49}{53}\\\\=\dfrac{49}{53}-\dfrac{14}{53}i$