1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
valentina_108 [34]
3 years ago
9

Simplify the expression (-2+4i)-(2+7i) I am not great at these--

Mathematics
2 answers:
e-lub [12.9K]3 years ago
8 0

( - 2 + 4i) - (2 + 7i) \\ ( - 2 + 4i) + ( - 2 - 7i) \\  - 2 + ( - 2) =  - 4 \\ 4i + ( - 7i) =  - 3i \\  - 4 - 3i
Gre4nikov [31]3 years ago
3 0
(-2+4i)-(2+7i)
-2+4i+(-2-7i)
Remove ( )
-2+4i+-2-7i
-4+4i-7i
-4-3i Is the answer. Nope this helps.
You might be interested in
Help I need help with this one
andrey2020 [161]
THE CORRECT ANSWER IS D 1/6
8 0
3 years ago
There are 207 students in 9 classes at this rate how many are in 6 classes
soldi70 [24.7K]
There would be 138 students in 6 classes because first you'd divide 207 from 9 and get 23 then you'd multiply 23 to 6 and get 138.
5 0
3 years ago
Read 2 more answers
Write the equation of a line Parallel to the given line and passes through points (-4, -3); (2, 3). Hints find the slope by usin
julia-pushkina [17]

First, we obtain the gradient (slope) of the first parallel line

\text{gradient, m}_1\text{ = }\frac{y_2-y_1}{x_2-x_1}\text{ = }\frac{3-(-3)}{2-(-4)}=\frac{6}{6}\text{ = 1}

Recall that since both lines are parallel, we have that,

m_1=m_2

Thus

m_2\text{ = 1}

Hence, we can find the equation of the parallel line given that it passes through the points (-4, -3)

Using

\begin{gathered} y\text{ = mx + c} \\ \text{where m = m}_2\text{ = 1} \\ \text{and x = -4 ,  y = -3, we have} \\ -3\text{ = 1(-4) + c} \\ -3\text{ = -4 + c} \\ 4\text{ - 3 = c} \\ c\text{ = 1} \\ \text{Thus, the equation of the line is y = (1)x + 1} \\ y\text{ = x + 1} \end{gathered}

5 0
1 year ago
A group of friends equally split the dinner bill shown. If each person paid $16, how many friends paid?
Akimi4 [234]

Answer:

16/y = x

Step-by-step explanation:

You cannot solve for the question yet. However, you can create an equation!

we know that each person paid 16 dollars.

We don’t know how much the bill was or how many people were there.

So out equation looks like;

z/y = x

or

z * x = y

z = how much each person paid.

y = how much each person paid.

x = how many people paid.

Substitute with what we know.

16/y = x

16 * x = y

Now you will be able to substitute for either x or y to find either answer.

7 0
3 years ago
Read 2 more answers
If mark can make 42 cakes in 7 days how many can he make in 5 days
ipn [44]
42%7=6. 6 times 5 is 30. 30 cakes in 5 days.
6 0
4 years ago
Other questions:
  • The formula for the volume of a cone is V =1/3 pi*r^2h. If the radius (r) is doubled and
    8·1 answer
  • Kelly plans to take juice on her camping trip. Which will hold more juice, 8 cans or 2 bottles? How much more?
    11·1 answer
  • Biking at 12 mph, it takes Kristen hour to reach the train station to go to work. Kristen then takes the train to work, and it t
    5·1 answer
  • Dwayne hikes 60 miles in 3 days. At that rate, how many days does it take him to hike a total of 240 miles
    9·2 answers
  • What is 125 - (5-9)^3÷2
    9·1 answer
  • CAN SOMEONE PLEASE HELP FIND WHAT X IS PLEASE AND THANK YOu
    6·1 answer
  • Select the correct answer.
    13·2 answers
  • What are 2 or more fractions of each of these??
    5·2 answers
  • Pls help me with this!
    13·1 answer
  • How do you turn 2x+3y=20 into slope intercept form?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!