3 years ago

Classify the number by selecting which set or sets it belongs to.

Mathematics

1 answer:

Brrunno [24]3 years ago

5 0

Answer:

yes sir i can elp you let me just get you a dicktionary

Step-by-step explanation:

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Factor 4x^2+81 over the set of complex numbers.

Hunter-Best [27]

$Use:\\\\i=\sqrt{-1}\to i^2=-1\\\\a^2-b^2=(a-b)(a+b)\\--------------------\\\\4x^2+81=2^2x^2+9^2=(2x)^2-(-9^2)=(2x)^2-(-1)(9^2)\\\\=(2x)^2-(i^2)(9^2)=(2x)^2-(9i)^2=\boxed{(2x-9i)(2x+9i)}$

3 0

4 years ago

Can anyone help me please??

allochka39001 [22]

Answer:

-20x / (x-12) = y

Step-by-step explanation:

3/x - 5/y = 1/4

Multiply each side by 4xy to clear the fractions

4xy ( 3/x - 5/y = 1/4)

Distribute

12y - 20x = xy

Subtract 12y from each side

-20x = xy -12y

Factor out y

-20x = y(x-12)

Divide each side by (x-12)

-20x / (x-12) = y

4 0

4 years ago

Whats an equivalent fraction to 4/8=

padilas [110]

The fraction is equivalent to 1/2 since you can simplify 4/8 as (4/4)/(8/4) = 1/2.

7 0

3 years ago

Read 2 more answers

If Karen has 6 cups of oatmeal and she divides it into 3/4 cup servings, how many servings of oatmeal will she have?

djyliett [7]

8 servings of oatmeal

4 0

3 years ago

If I were to solve for x and there is x to the third power equals to 64. What would be my answer?

viva [34]

Answer:

x=4

Step-by-step explanation:

if you do $\sqrt[3]{64}$ you'll get that $4^{3}$ is 64.

6 0

4 years ago