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
Maksim231197 [3]
3 years ago
12

What type of number is -16.2i

Mathematics
2 answers:
azamat3 years ago
8 0

Answer:

Complex and imaginary number

Step-by-step explanation:

First, let's write the number-16.2i in the form of a+bi.

0+ (-17)i

Since -16.2i can be written in the form of a + bi, where a and b are real numbers, it is a complex number.

Also, since a=0, it is also an imaginary number.

-16.2i is complex and imaginary.

Gelneren [198K]3 years ago
3 0
Complex and imaginary number
You might be interested in
Please help me answer this question genius
kolbaska11 [484]

Answer:

  x ∈ {-0.465, 1.014}

Step-by-step explanation:

The equation can be cast in the form f(x) = 0, and solved easily using a graphing calculator. That shows x ≈ -0.465 and x ≈ 1.014. The same calculator can iterate the roots to full calculator precision.

__

The equation can be made a quadratic by the substitution ...

  z = e^(2x)

Then we have ...

  2\cosh(2x)-\sinh(2x)=4\\\\2\cdot\dfrac{e^{2x}+e^{-2x}}{2}-\dfrac{e^{2x}-e^{-2x}}{2}-4=0\qquad\text{use exponential identities}\\\\2z+2z^{-1}-z+z^{-1}-8=0\qquad\text{multiply by 2, substitute z}\\\\z^2 -8z+3=0\qquad\text{multiply by z}\\\\z=\dfrac{8\pm\sqrt{(-8)^2-4(1)(3)}}{2(1)}=4\pm\sqrt{13}\\\\x=\dfrac{\ln(z)}{2}=\dfrac{\ln(4\pm\sqrt{13})}{2}\approx\{-0465133,1.014439\}

7 0
2 years ago
The radius of a circle with centre O is 5 cm. The lengths of the chords AB and BC are 6 cm and 8 cm respectively. The midpoints
Katen [24]

Refer to the attachment

6 0
3 years ago
Need help fast!!! Algebra question!!!
ddd [48]
AVERAGE between 90 and 100%
means not including 90 and 100% but not including 90 or 100%


average=(sum of values in set)/(how many values in the set)

so
4 exams, so there are 4 values
average=(sum)/4

the sum is the known+unknwon
sum=76+99+86+x

so
90<span><</span>average and average <span><</span>100
or
90<span><</span>average<span><</span>100


lets say average=a

a=sum/number
a=(76+99+86+x)/4

90<(76+99+86+x)/4<100
90<(76+99+86+x)/4 and (76+99+86+x)/4<100

solve each for x and find intersection

90<span><</span>(76+99+86+x)/4
times 4 both sides
360<span><</span>261+x
minus 261 both sides
99<span><</span>x


(76+99+86+x)/4<u><</u>100
times 4 both sides
261+x<u><</u>400
minus 261 both sides
x<u><</u>139


so

99<u><</u>x<u><</u>139
since max score is 100
99<u><</u>x<u><</u>100

interval notaion is
[99,100]


answer is 2nd one


3 0
3 years ago
Read 2 more answers
∡C and ∡D are supplementary angles. If m∡D is nine less than twice m∡C, find m∡D.
Gala2k [10]

Answer:

D is 117

Step-by-step explanation:

Let the measure of angle C be x

The measure of D is 9 less than twice C

Mathematically that is 2x-9

If both are supplementary, they add up to be 180

Thus;

x + 2x - 9 = 180

3x = 180 + 9

x = 189/3

x = 63

Recall;

D = 2x-9= 2(63) -9 = 126 -9 = 117

6 0
3 years ago
Identify horizontal or vertical compression stretch of the function g(x) = 6x
nexus9112 [7]

Answer:

dhjfydhftb7cuvdihcdjxuihy

5 0
3 years ago
Other questions:
  • What are the orders of 3,7,9,11,13,17 and 19(mod20)?does 20 have primitive roots?
    11·1 answer
  • 2 less than one-third of the points that the Panthers scored
    11·1 answer
  • Need help on this question
    5·1 answer
  • -2(2n+4)=10 solve the equation
    10·2 answers
  • A recycling center pays 2 cents per aluminum can and 5 cents per glass bottle. The equation 2x+5y=100 describes the number of ca
    13·1 answer
  • A line passes through (2, −1)(2, −1) and (4, 5)(4, 5).
    15·1 answer
  • Determine whether the relation is a function.<br> {(-9, 2), (-9, 5), (2, 7), (4, -1), (9, 4)}
    12·2 answers
  • Solve using substitution:<br> 2x - 3y = -1<br> y = x - 1
    12·1 answer
  • Please see the picture <br><br> LiNE <br><br> A , B , C , D ?
    8·1 answer
  • A diagonal line labelled CD intersects a horizontal line labelled AB at point E forming an angle AEC. 
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!