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
Anestetic [448]
3 years ago
11

Check each true statement about the number 7- square root 3i

Mathematics
2 answers:
kumpel [21]3 years ago
8 0

Answer:

option-A

option-D

Step-by-step explanation:

We are given a complex number as

7-\sqrt{3}i

we know that whenever we have

a+bi

where

a is the real number

b is imaginary number

now, we can verify each statement

option-A:

we can see that

a=7

and

a is the real number

so, 7 will be real number

so, this is TRUE

option-B:

we know that

b=-\sqrt{3}

so, imaginary number is -\sqrt{3}

while it is mentioned square root 3 is the imaginary part of the number

so, this is FALSE

option-C:

We can see that coefficient of  i is b

and

b=-\sqrt{3}

so, this is FALSE

option-D:

we know that

'a' and 'b' are sum of real and imaginary number

so, this is TRUE

Doss [256]3 years ago
5 0

Answer:

the answers are A B D

Step-by-step explanation:

You might be interested in
Mr. Smith built a rectangular-shaped sandbox for his children, measuring 4 feet by 4 feet by 6 inches. Sand has a density of app
ehidna [41]

Answer:

To completely fill the sandbox will cost $56

Step-by-step explanation:

First, we calculate volume of the rectangular-shaped sandbox:

V=long*with*height\\V=4feet*4feet*0.5feet\\V=8cubicfoot

We know that density of sand is 100 pounds per cubic foot. Then, to fill the sand box that has a volume of 8 cubic foot, we calculate by rule 3:

1cubic foot..............100 pounds

8 cubic foot.............x pounds

x=\frac{8*100}{1}

x=800 pounds

We will need 800 pounds of sand to fill the sandbox, then we can calculate by rule 3 the number of bags needed and next the total cost of them:

50 pounds.......1bag

800 pounds.....x bags

x=\frac{800*1}{50} \\x=16

To calculate the cost:

1 bag ..................$3.50

16 bags.................$x

x=16*3.50\\x=$56

To completely fill the sandbox will cost $56

4 0
4 years ago
Nick borrowed $7150, to be repaired at an annual simple interest rate of 6.25%. How much interest will be due after 5 years? How
Soloha48 [4]
$2,234.38 after 5 years and he will have to repay $9,384.38.
7 0
3 years ago
how many solutions does the graph above show? <br> a. one <br> b. none<br> c. infinite
dmitriy555 [2]

Answer:

infinite

Step-by-step explanation:

The line can be represented by the equation y=-2/3x-2 since there are no other lines it would be infinite. if there was a line with the same slope and a different y-intercept the answer would be none as the lines never intersect.  for the equation there are ifinitly many!  

     for example any point that that lone touches is a solutions so there is not one but many answers.

           

5 0
3 years ago
What’s is part A?? .....
bixtya [17]

Answer:

A. 3

B. 4

C. 1

D. 2

Step-by-step explanation:

Consider all equations:

A. y=x^2 -6x+8

This is the equation of parabola with vertex at point

x_v=\dfrac{-b}{2a}=\dfrac{-(-6)}{2\cdot 1}=3\\ \\y_v=3^2-6\cdot 3+8=9-18+8=-1

The y-intercept is at point

x=0\\ \\y=0^2-6\cdot 0+8=8

Since

x^2 -6x+8=x^2-4x-2x+8=x(x-4)-2(x-4)=(x-2)(x-4),

the x-intercepts are at points (2,0) and (4,0)

The leading coefficient is 1 > 0, then the parabola opens upwards.

Hence, the graph of this parabola is 3.

B. y=(x-6)(x+8)

This parabola has two x-intercepts at points (6,0) and (-8,0).

The leading coefficient is 1 > 0, then the parabola opens upwards.

The only possible choice is parabola 4.

C. y=(x-6)^2+8

This parabola has the vertex at point (6,8), opens upwards, therefore does not intersect the x-axis.

The graph of this parabola is 1.

D. y=-(x+8)(x-6)

This parabola has two x-intercepts at points (6,0) and (-8,0).

The leading coefficient is -1 > 0, then the parabola opens downwards.

The only possible choice is parabola 2.

4 0
3 years ago
Read 2 more answers
what can you erase with a eraser and your finger answer this correctly and you get 25 points and brainly
Leno4ka [110]

My     will     to     live.                                  

..................................................

6 0
3 years ago
Other questions:
  • List the next 3 pattern
    12·2 answers
  • I have a value that is 35% of the total value. I want to know what the total value is and what formula is used to work this out?
    11·1 answer
  • An experimenter has prepared a drug dosage level that she claims will induce sleep for 80% of people suffering from insomnia. Af
    6·1 answer
  • TELL ME WHERE THESE GO PLEASE?
    15·1 answer
  • Skeleton practices playing spooky music on his piano he practice 60 minutes every single day how many hours does skeleton play i
    13·1 answer
  • Solving radical equations<br>check for extraneous solutions<br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B2x%20%2B%2030%7D%2
    12·2 answers
  • 6.2 yd
    5·1 answer
  • PLEASE HELP FAST<br><br> bx = -5
    14·1 answer
  • The number of fish in a lake is growing exponentially. The table shows the values, in thousands, after different numbers or year
    15·1 answer
  • Write each decimal as a fraction in simplest terms
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!