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
Olin [163]
3 years ago
13

Multiplying complex number I need help on 7 & 8

Mathematics
1 answer:
Alexxandr [17]3 years ago
3 0

Answer:

7.  35i^2 - 46i + 15

8. -15i^2-i -40

Step-by-step explanation:

hope this helps. :)

You might be interested in
The graph shows the velocity f(t) of a runner during a certain time interval:
omeli [17]

Answer:

Option B

Step-by-step explanation:

  • (0,2)
  • (6,8)
  • (8,0)

Slope

  • m=8-2/6
  • m=6/6=1

And

  • m=0-8/8-6
  • m=-8/2
  • m=-4

These are acceleration

Y intercept is (0,2) as x coordinate is 0

This is initial velocity 2m/s

The runner stopped at 8s

8 0
2 years ago
Larry has read 31 pages of his library book. The book contains p total pages.
OLEGan [10]

Answer:

31 u jest read it

Step-by-step explanation:

6 0
2 years ago
For what value of "a" will the product shown below have a purely imaginary value? (Show work please)
MakcuM [25]
If you expand out the brackets you get this,

(4+5i)(a+2i) = 4a + (5a)i + 8i - 10

The -10 comes from 5i * 2i.
Squaring i becomes -1.

Let's group the real stuff together,
and imaginary separately,

(4a - 10) + (5a + 8)i

For this to be purely imaginary,
the real part needs to be zero.

Therefore 4a - 10 = 0

Solve for a.
5 0
3 years ago
I need help with this problem
vitfil [10]

Answer:

all of the triangles are right triangles

6 0
2 years ago
Two cell phone companies have different rate plans. Runfast has monthly charges $10 plus $4 per gig of data. B A &D’s monthl
leva [86]
Let x be the number of gb used.

Question (1):
Runfast = 10 + 4x
<span>BA&D= 6 + 6x

Question (2):
</span> 10 + 4x = 6 + 6x
2x = 4
x = 2

Both companies will cost the same if you use 2 Gb of data.
BA&D will be cheaper if you use less than 2 Gb of data.
Runfast will be cheaper if you use more than 2 Gb of data.

4 0
3 years ago
Other questions:
  • From the beginning of the day the temperature rose 15° so that by 4 pm it was 87°. What was the temperature at the start of the
    12·2 answers
  • Which parent function has a range of (-∞,∞)? (there are 4 answers)
    5·1 answer
  • a varies directly as b and inversely as the square of c. If a = 197 when b = 5 and c = 5, find a if b = 3 and c = 3
    15·1 answer
  • The Kamp family has twins, Rob and Rachel. Both Rob and Rachel graduated from college 2 years ago, and each is now earning $50,0
    9·1 answer
  • Write this decimal as a fraction. 0.45 repeating
    5·2 answers
  • A rectangle is 6 centimeters long and 4 centimeters wide. What is the area of the rectangle?
    15·2 answers
  • Is A triangle with side lengths 24,32, 42 a right angle?
    7·1 answer
  • Help a girl out plzz:( im confused
    12·1 answer
  • PLEASE NEED HELP ASAP
    11·1 answer
  • Please help me with this question
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!