What is the value of (7 +21)(3 - i)?

Answers

Answer 1
(7+21)=28

28(3-I)=

28•3 =84

28•I=28i

28/84=3,5

3,5=I

Related Questions

A four-person relay team completed a race in 60.4 seconds. On average, what was each runner's time?

Answers

Answer:

Each person did 15.1 seconds.

Step-by-step explanation: Just divide 60.4 seconds by 4 for the number of runners.

Marking people as brainlist are the triangles congruent?

Answers

Answer:

congruent by S.A.S. hope it helps if you could give me brainliest it would help. THANKS

Step-by-step explanation:

Nathan rolls a number cube and records the result of each roll in the table.

Number Cube
Number Rolled
Frequency
1
11
2
16
3
14
4
20
5
12
6
17

Which statements below represent the situation? Selet three options.
The relative frequency of rolling a 4 is StartFraction 2 over 9 EndFraction.
The experimental probability of rolling a 3 is greater than the theoretical probability of rolling a 3.
The experimental probability of rolling a 2 is greater than the theoretical probability of rolling a 2.
The relative frequency of rolling a 5 is StartFraction 2 over 13 EndFraction.
The experimental probability of rolling a 1 is less than the experimental probability of rolling a 6.

Answers

The relative frequency of rolling a 4 will be 2/9. Then the correct option is A.

How to find the relative frequency?

Relative frequency is the ratio of the considered subgroup's count to the total count.

Nathan rolls a number cube and records the result of each roll in the table.

                     Number Rolled                         Frequency

                               1                                               11

                              2                                               16

                              3                                               14

                              4                                              20

                              5                                               12

                              6                                               17

                                                                  Total = 90

Then the relative frequency of rolling a 4 will be

P = 20 / 90

P = 2/9

Then the correct option is A.

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Answer:

its A, C, D

Step-by-step explanation:

tested for really

2x + 8 = 2(x + 4)
(Variables Vanish)
show stepss! due in 5 min!<3​

Answers

Answer:

0

Step-by-step explanation:

2x+8=2(x+4)

2x+8=2x +8

2x-2x=8-8

0=0

Merritt is driving to Mount Shasta. On her map, she is a distance of 7 inches away. The scale of the map is 2 inches is to 50 miles. How far must Merritt travel to reach her destination?

Answers

Answer:

7 inches on the map is 175 miles.

Step-by-step explanation:

2 inches equals 50 miles.  Use 50 divided by 2 to find the 1-inch scale which is 1:25 ( one inch to 25 miles)

What is the domain and range of the equation y = 6/(x+2) + 4?

Answers:

Real numbers except x = -2 and Real numbers except y = 6

Real numbers except x = 2 and Real numbers except y = 4

Real numbers except x = -2 and Real numbers except y = 4

Answers

Answer:

.2 sdfgghh 45

Step-by-step explanation:

a number is 2/3 of another number. if the sum of the two numbers is 30, find the smaller number.

Answers

Answer: The numbers are 4 and 6.

Step-by-step explanation:

Let one number be represented as

x

and the other as

y

.

According to the problem:

x

=

2

3

y

and

x

+

y

=

10

From the second equation we get:

x

+

y

=

10

y

=

10

x

(subtracting

x

from both sides)

Replacing the value of

y

in the first equation we get:

x

=

2

3

y

x

=

2

3

(

10

x

)

Multiplying both sides by

3

we get:

3

x

=

2

(

10

x

)

Opening the brackets and simplifying we get:

3

x

=

20

2

x

Add

2

x

to both sides.

5

x

=

20

Divide both sides by

5

.

x

=

4

Since from the second equation we have:

x

+

y

=

10

substituting

x

with

4

we get:

4

+

y

=

10

Subtract

4

from both sides.

y

=

6

Answer: The smaller number is 12.

Step-by-step explanation:

Just took the test

If u answer correctly I will give brailiest
For any number n>1, is
|([frac{7}{25} + frac{24}{25}i)^n|
A) Greater than 1
B) Less than 1
C) Equal to 1

Answers

Answer:

$\mathrm{Since\:the\:denominators\:are\:equal,\:combine\:the\:fractions}:\quad\ frac{a}{c}\pm\frac{b}{c}=\frac{a\pm\:b}{c}$ Since the denominators are equal ...

Step-by-step explanation:

Addition and subtraction of complex numbers works in a similar way to ... Example 1- Addition & Subtraction. a. ... (6+3)+(7−5)j=9+2j ... 25 + 30j + 9(-1)` ... our final answer is real only (it does not contain any imaginary terms. ... above - we multiply top and bottom of the fraction by the conjugate of the bottom.

.Damian wrote the number five and thirty-eight thousandths as 5.38. Was he correct or not? if so, what was the error

Answers

Answer:

he is incorrect.

Step-by-step explanation:

It would be 5 and 38 HUNDRETHS because the first number after the decimal is the tenths.

Which line on the graph below has an undefined slope?

○ P
○ Q
○ R
○ S​

Answers

Answer:

R

Step-by-step explanation:

Answer:

R

Step-by-step explanation:

What is the slope of the graph?

Answers

1
1/1
Or 1
Rise 1
Run 1
The slope is 1. It’s positive so it goes upwards

Maya's final score is 298.Which dancer has the greater final score?

Answers

Answer:

the question

Step-by-step explanation:

because it litterly has dancer and in the question it has the greater final score.

If cos O =-2/5 and tan O > 0 what is the value of sin O

Answers

Answer:

negative square root 21 over 5.

Step-by-step explanation:

mathGiven that for an angle ,

We are to find the value of  

We know that

Cosine is negative in Quadrant II and Quadrant III.

Tangent is positive in Quadrant 1 and Quadrant III.

So, the given angle  lies in the Quadrant III.

We will be using the following trigonometric identity:

We have

Since the angle  lies in Quadrant III and sine is negative in that quadrant, so

Thus, option (B) is correct.

if you give me the correct answer i will give you brainliest

Answers

Answer:

no

Step-by-step explanation:

pretty sure it’s a sorry if i’m wrong

On god I will mark you as brainliest

Answers

SAS = equal triangle
x - 4 = 19
Solve the equation
Solution: x = 23

which point is closer to the x-axis (0.7, 21) or (0.77, 10)

Answers

Answer:

As

[tex]d_A=21[/tex][tex]d_B=10[/tex]

Therefore, point B is closer to the x-axis.

Please check the attached graph.

Step-by-step explanation:

We know that:

x-coordinate of any point P(x, y) gives its distance of that point from the y-axisy-coordinate of  any point P(x, y) gives its distance of that point from the x-axis

Given the points

(0.7, 21)(0.77, 10)

Let us say

A(0.7, 21)B(0.77, 10)

FOR POINT A(0, 7)

As the y-coordinate of point A(0.7, 21) ⇒ y = 21

We know that the y-coordinate of  any point P(x, y) gives its distance of that point from the x-axis

Thus, the distance of point A(0.7, 21) from the y-axis is 21 units.

i.e.

[tex]d_A=21[/tex]

FOR POINT B(0.77, 10)

As the y-coordinate of point A(0.77, 10) ⇒ y = 10

We know that the y-coordinate of  any point P(x, y) gives its distance of that point from the x-axis

Thus, the distance of point B(0, 7) from the y-axis is 10 units.

i.e.

[tex]d_B=10[/tex]

As

[tex]d_A=21[/tex][tex]d_B=10[/tex]

Therefore, point B is closer to the x-axis.

Please check the attached graph.

Answer:

a=10

b=20

Step-by-step explanation:

Simplify 12x-24 into simplest form

Answers

Factor out 12
12(x-2)

Solve 3/4x = 7 28/ 3​

Answers

3/4x=728/3

x=728/3×4/3

x=32.556

HOPE IT HELPS YOU OUT PLEASE MARK IT AS BRAINLIEST AND FOLLOW ME PROMISE YOU TO FOLLOW BACK ON BRAINLY.IN

BUT I'M NOT SURE IF IT IS CORRECT

WILL GIVE BRAINLIEST

Which of the following is the function rule for the graph of the sin function from 0 to 2pi if the amplitude is 1.5 and the period is (pi/2)?
A. 1.5sin(pi /4)x
B. 1.5sin2x
C. 1.5sin4x

please help fast, will give brainliest

Answers

Answer:

1.5sin4x

Step-by-step explanation:

I just answered this question and got it right.

The function is 1.5sin(4x).

What is sin function?

The ratio of the length of the opposite side to that of the hypotenuse in a right-angled triangle is the sine function in trigonometry. A right triangle's sides or unknown angles can be found using the sine function.

Given the sine function from (0, 2π), and amplitude is 1.5, the period is π/2

sine function in general form

y = a sin (b (x – h)) + d

where a = amplitude, b= period

h is the phase shift, and

d is the vertical displacement.

according to question, This function currently has no phase shift, since

h = 0, and  no vertical displacement, since d = 0

equation is  y = a sin b x

and b is ratio of normal period to desired period

b = 2π/(π/2)

b = 4

substitute the value of a and b in equation we get,

y = 1.5 sin (4x)

Hence the sin function from 0 to 2pi is y = 1.5 sin (4x).

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Rachel packed supplies for the sixth grade picnic. For every 11 forks she packed, she packed 8 spoons. Rachel packed a total of 110 forks. How many spoons did she pack?

Answers

Answer:

80

Step-by-step explanation:

The ratio is 11:8 multiply it by 10 it turns into 110:80

Answer:

80

Step-by-step explanation:

because that's the answer

The Jones family was one of the first to come to the US. They had 5 children. Assuming that the probability of a child being a girl is .5, find the probability that the Jones family had:

a)at least 2 girls

b)at most 4 girls

Answers

I’d say it’s A because I just do

Donavon and Joshua are both weight lifting to gain weight. Donavan weighs 120 lbs and he gaining 10 lbs each month and Joshua weighs 150
Ibs and is gaining 4 lbs each month. How many months will it take for Donavan to weigh the same as Joshua?

Answers

Answer:

4 months

Step-by-step explanation:

Joey and Krysta are at the Richmond Fair and are waiting in line to ride on the Ferris Wheel. They are trying to figure how long they will need to wait before they get to the front of the line. The more people in the line ahead of them, the longer they will need to wait.

p = the number of people in line ahead of Joey and Krysta
w = the length of time Joey and Krysta will need to wait

Which variable is the independent variable?

Answers

Answer:

P, the number of people in line ahead of Joey and Krysta is the independent variable.

Step-by-step explanation:

i need help with some unanswerd Qs on my profile

Answers

Answer:

I will help

Step-by-step explanation:

Answer:

i can help you

Step-by-step explanation:

what do you need done

Given the point A(3,4) find the coordinates of three other point to create a parallelogram ABCD that isnt a rectangle or square

Answers

Answer:

Iloveyou ayeeeeeeeeei

❤️❤️❤️

A (3,4)
B (7,4)
C (2,1)
D (6,1)

Peter, Henry & Angad share some money in the ratio 1 : 5 : 4.
In total, Peter and Angad receive £75.
How much does Henry get?​

Answers

Answer:

75

Step-by-step explanation:

1+4=5

75=75

Lin runs 5 laps around a track in 4 minutes. How many minutes per lap is that?

Answers

Answer:

1.25 minutes per lap

Step-by-step explanation:

PLEASE HELP WILL GIVE 15 POINTS!!!!

Answers

Answer:

130

Step-by-step explanation:

HELPP! I need an explanation an answer quicck

Answers

Answer:

C. -1,-2

Step-by-step explanation:

the answer is -1 , -2

What is the product of twenty hundredths and sixty-five thousandths

Answers

Answer:

0.013

Step-by-step explanation:

The product of twenty hundredths and sixty-five thousandths is 0.013.

Given that, the product of twenty hundredths and sixty-five thousandths.

What is the product of two fractions?

The product of two fractions is the product of the numerators and the product of the denominators.

Product of two fractions = Product of their denominators / Product of their numerators.

Twenty hundredths = 20/100

Sixty-five thousandths = 65/1000

Product = 20/100 × 65/1000

= 2/10 × 65/1000

= 130/10000

= 13/1000

= 0.013

Therefore, the product of twenty hundredths and sixty-five thousandths is 0.013.

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