All categories

3 years ago

What is the value of (-7 + 3i) - (2-6i)?

Mathematics

1 answer:

BigorU [14]3 years ago

4 0

First you must distribute the minus sign to the number bolded bellow:

(-7 + 3i) - (2 - 6i)

(-7 + 3i) + (-2 + 6i)

-7 + 3i - 2 + 6i

Now you must combine like terms. Imaginary numbers can only combine with imaginary and real number can only be combined with real numbers:

(-7 + (-2) ) + (3i + 6i)

-9 + 9i

I hope this helped! Let me know if you have any questions :)

~ Just a girl in love with Shawn Mendes

You might be interested in

5 1/2 divided by 1 3/8

GrogVix [38]

Answer:

Step-by-step explanation:

1. Convert from mixed number to fraction

$5\frac{1}{2} =\frac{5(2)+1}{2} =\frac{11}{2}$

$1\frac{3}{8}=\frac{(1)(8)+3}{8} =\frac{11}{8}$

2. Divide fractions

$\frac{\frac{11}{2} }{\frac{11}{8} } =\frac{(11)(8)}{(11)(2)} =\frac{8}{2} =4$

Hope this helps

8 0

1 year ago

A lake covers a surface area of about 20,000 square miles.

trapecia [35]

Step-by-step explanation:

2×1000¹⁰

hope this helps

4 0

3 years ago

Help this is trigonometry I think 35 points!!

kolezko [41]

Answer:

y = 16.3

Step-by-step explanation:

We would apply the formula for altitude of a right triangle which is given as:

h = √(xy)

Where,

h = 14

x = 12

y = y = ?

Plug in the values

14 = √(12*y)

14² = (√(12*y) (squaring both sides)

196 = 12*y

196/12 = 12y/12 (division property of equality)

16.3 = y (nearest tenth)

y = 16.3

4 0

3 years ago

A phone company has a monthly data plan where a customer pays flat monthly fee of

NeTakaya

A- 1gb=3$ 30$+(3*gb used)= total

B- 30$+(3*10)= 60$

3 0

3 years ago

Please Simplify 5(x - 6)

nordsb [41]

Our equation looks like:

$5(x-6)$

This means that we will need to distribute. This means that we need to multiply everything inside the parenthesis by the number outside of the parenthesis. (<em>Note: you only distribute when variables are involved.)</em>

$(5 \cdot x)-(5 \cdot 6)$

Simplify:

$5x-30$

We cannot simplify any further, so we know that our equation, until we know what x equals, is $5x - 30$ .

4 0

3 years ago

Read 2 more answers