How do you write square root of -20 using the imaginary i

Answers

Answer 1

Answer:

Step-by-step explanation:

i² = (-1)

[tex]\sqrt{-20} =\sqrt{20i^{2}}\\\\=\sqrt{2*2*5*i^{2}}\\\\=2i\sqrt{5}[/tex]


Related Questions

Try solving this: (5 3/4) (2)

Answers

Answer:

11 1/2

Step-by-step explanation:

Please last question need help! Will give Brain

Answers

I got 15 but that isn’t an option. When the triangle is scaled down the angles should stay the same. 180-(50+115)=15

What is the measure of angle TMS? Pls explain your answer and I will mark brainliest!

Answers

Answer:

38 degrees

Step-by-step explanation:

If the line is tangent that means it forms a 90 degree angle. The angle measure of the inside of a triangle is equal to 180 degrees. If you add 52 and 90 you get 142. Subtract this amount from 180 and you will get the measure of m TMS

Select all tables that represent a proportional relationship between x and y.​

Answers

Answer:

1 and 2

Step-by-step explanation:

that is the answer

Lunch is 7.95 the tax is 10% what’s the total cost

Answers

Answer: ($)8.75

Step-by-step explanation:

To calculate the tax, simply do 10%(0.1)*7.95 to get 0.795, rounding up to 0.80(money typically rounds up).

To calculate the total cost, simply do 7.95+0.80 to get 8.75.

Hope it helps <3

The answer is : 8.745

In an animal shelter, the ratio of dogs to cats is 5 to 3. There are 25 dogs. Write and solve a proportion to find
the number of cats at the shelter.

Answers

Answer:

15 cats

Step-by-step explanation:

the sum of three times a number (x) and −23 is 28

Answers

Answer:

x=17

Step-by-step explanation:

3x-23=28

3x-23+23=28+23

3x=51

x=17

The park is a rectangular park with an area of 20 square miles. The park is 4 miles wide. What is the length in miles?

Answers

Answer:

5 miles.

Step-by-step explanation:

Because area is just length times width so in that sense 20/4 is 5 :)

While parasailing. Ryan spots a dolphin on the water below. If Ryan is 228 feet above the
water and the angle of depression to the dolphin is 15, what is the horizontal distance
between Ryan and the dolphin?

Answers

Answer:

850.9 feet

Step-by-step explanation:

The horizontal distance between Ryan and the dolphin is 850.907 feet.

What is Trigonometry?

One area of mathematics known as trigonometry examines the relationship between the sides and angles of a right triangle. The relationship between sides and angles is defined for 6 trigonometric functions.

We have,

Ryan is 228 feet above the water and the angle of depression to the dolphin is 15.

Using trigonometry

tan 15 = 228/ x

x= 228/ tan 15

x= 228 / 0.26794919243

x = 850.907  feet

Learn more about Trigonometry here:

https://brainly.com/question/29002217

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How many points did Deven score in his 6th game?

Answers

Answer:

2 is the answer thanks pls give brainliest

1 point
In the previous question you found 13% of £270. Now use your answer to
decrease £270 by 13%. *



Sorry for posting again

Answers

Answer:

£234.90

Step-by-step explanation:

270(1-13/100)

lets break it down:

step 1=  13/100=0.13

step 2= 1-0.13=0.87

step 3= 270 x 0.87=234.9

final answer=£234.90

i hope it helps

what is the distance from L to M?

A. 100 units
B. 14 units
C. 2 units
D. 10 units

Answers

The anwser is 14 units

Answer:

D. 10 units

Step-by-step explanation:

Using the distance formula:

d = √(x2 – x1)² + (y2 – y1)²

Plug in the values of the points:

d = √(3 – (-5))² + (-2 – 4)²

d = √(8)² + (-6)²

d = √64 + 36

d = √100

d = 10

The sum of a number and two times a smaller number is 62 .Three times the bigger number exceeds the smaller number by 116 .
What is the biggest number and the smallest number??

Answers

Answer:

42,10

Step-by-step explanation:

let the numbers be x and y and x>y

x+2y=62

3x-y=116

multiply  by 2

6x-2y=232

add the first

7x=294

x=42

from first

42+2y=62

2y=62-42=20

y=20/2=10

HELP!!BC=
Round your answer to the nearest hundredth.
C
A
50
3
B

Answers

Answer:

answer is 2.30 using sine =opp/hyp



True or false;
The x-intercept of a function ALWAYS occurs where y is equal to zero.
True
False

Answers

I think the answer is (true)
Have a great day!

The x-intercept of a function always occurs where y is equal to zero is true.

Given,

The x-intercept of a function always occurs where y is equal to zero.

We need to find whether the given statement is True or False.

What is x-intecept and y-interept?

The x-intercept is the point where the line passes through the x-axis.

We need to put y = 0.

The y-intercept is the point where the line passes through the y-axis.

We need to keep x = 0.

Check the statement.

The x-intercept of a function always occurs where y is equal to zero.

This is a true statement because in order to find the x-intercept we need always keep y = 0.

Thus the given statement-

The x-intercept of a function always occurs where y is equal to zero is true.

Learn more about intercepts of a function here:

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round 59.6487 to 2 decimal places?

Answers

Answer:

Step-by-step explanation:

round 59.6487 to 2 decimal places=

59.65

Answer:

59.65

Step-by-step explanation:

59.6487 ≈ 59.65

what division problem equals 9/5

Answers

Answer:

9÷5=9/5

Step-by-step explanation:

Due very soon so if someone could answer soon-ish it would be very helpful and much appreciated <3<3<3
1) A straight line is perpendicular to y=2x+5 and passes through (0,3).
What is the equation of the line??
2) A straight line is perpendicular to y=0.5x+3 and passes through (3,5).
What is the equation of the line??
3) A straight line is perpendicular to y=4-5x and passes through (20,5).
What is the equation of the line??

Answers

Answer:

1) x+2y+15=0

only know that one soz

Step-by-step explanation:

9e + 4=5e + 14 + 13e

Answers

Answer:

e = -1

Step-by-step explanation:

1. 9e + 4 = 5e + 14 + 14e

2. 9e = 5e + 10 + 14e

3. 9e = 19e +10

4. -10e = 10

5. e = -1

Hope that helps

Answer:

e - 10

Step-by-step explanation:

1.) We need to manipulate the equation to get e by itself.

2.) To solve the equation, do the following steps;

9e + 4 = −5e + 14 + 13e

9e + 4 = 14 + 8e (Combine like terms)

9e + 4 − 8e = 14 + 8e − 8e (Subtract 8e from each side)

e + 4 = 14 (Combine like terms)

e + 4 - 4 = 14 - 4 (Subtract 4 from each side)

e = 10 (Combine like terms.

3.) Answer: e = 10.

Now lets check our work. To check your work, do the following steps;

9e + 4 = −5e + 14 + 13e

9e + 4 = 14 + 8e

9(10) + 4 = 14 + 8(10)

90 + 4 = 14 + 80

94 = 94

By doing those steps we can confirm the answer, e = 10, is true.

I WIL GIVE BRAINLIST IF CORRECT DON'T GIVE ME A NOT SMART ANSWER OR ILL REPORT IT
Which would be the BEST first step to use to solve this equation?
Problem: 0.15x=5
A. add 0.15 to both sides of the equation
B. divide both sides of the equation by 0.15
C.multiply both sides of the equation by 0.15
D. subtract 0.15 from both sides of the equation

Answers

D bc u are tryna to find x

Guys can you please HELP!!?

Answers

= 15 times 12 plus 8

The polynomial h(x) = (x+3)(x + 1)(x - 2)(.– 4) has the following zeros/roots:

Answers

Answer:

The roots(zeros) are :x=-3,-1,2,4

Step-by-step explanation:

The answer is A.

16, 6, 12, 5, 12
Find the mean and median number of hours for these students.
If necessary, round your answers to the nearest tenth.
Mean: hours
X Х
?
Median: hours

Answers

Answer:

mean: 10.2

median: 12

Step-by-step explanation:

The median is 12 Bbdhdhdb de dhdndbdbd

The ratio of the sides of a triangle is 2:4:9. If the perimeter is 165 inches, what is the length of the longest side?

Answers

Answer:

99inches

Step-by-step explanation:

The ratio of the sides of a triangle =2:4:9.

perimeter = 165 inches,

Total ratio= 2+4+9=15

perimeter = 165

Divide the perimeter by total ratio

165/15=11

Each of the sides

= (2×11) =22

(4×11) =44

(9×11)=99

the length of the longest side= 99inches

Find the value of 1.69x4.41

Answers

the value is 7.4529 ! hope this helps

1. Gina has a circular gold bracelet with a diameter of 3 inches. She wants
to cover the bracelet with a strip of lace. How long should the strip of lace
be to cover the bracelet entirely without any excess? Use 3.14 for tt
O a. 4.71 in
O b.7.065 in
O c. 9.42 in
O d. 15.22 in

Answers

C=2pier
C= 2 • 3.14 • 1.5 (radius if 1/2 of diameter)
C= 9.42

Hope that helps!

Answer:

C= 9.42

Step-by-step explanation: Usa test prep

Here's an interesting point on the graph.
What do these numbers (5 and 12.3) tell us about
Cannon Man?

Answers

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

In this triangle, what is sin 30°? What is sin 60°? What is the product of sin 30° and sin 60°?

Answers

Answer:

1800

Step-by-step explanation:

60.30= 1800

The correct answer is 1800

PLS HELP ITS DUE IN 3 MINUTES

Answers

Answer:

H 33 degrees

Step-by-step explanation:

WHat is 75x6-8+7-60+9/6x 1-8+8x0=?

Answers

It’ll be 0 cuz like u timings it by 0

Answer:

so basically it would be

Step-by-step explanation:

0

0

0

0

0

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