2 years ago

One number is 4 less than 3 times another If the sum of the numbers is 36, what are the two numbers?

1 answer:

8 0

Let's start by assigning variables for each of the numbers. Let the first one be x, the second one be y.

x + y = 36

x = 3y - 4

Now we solve using substitution.

3y - 4 + y = 36

This simplifies into:

4y = 32

y = 8.

Now we need to solve for x.

36 - 8 = 28 (because x + y = 36)

x = 28

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3 years ago

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3 years ago

3+5i/-2+3i perform operation

melisa1 [442]

Answer:

$\dfrac{9}{13}-\dfrac{19}{13}i$

Step-by-step explanation:

Remember $i^2=-1$

You are given the fraction $\dfrac{3+5i}{-2+3i}$

First, multiply the numerator and the denominator by -2-3i:

$\dfrac{3+5i}{-2+3i}=\dfrac{(3+5i)(-2-3i)}{(-2+3i)(-2-3i)}=\dfrac{(3+5i)(-2-3i)}{(-2)^2-(3i)^2}=\dfrac{(3+5i)(-2-3i)}{4-9i^2}=\dfrac{(3+5i)(-2-3i)}{4+9}$