Mathematics High School

√−100 = ___+ ___i

what is this?? the lesson is called simplifying square roots of negative numbers.

Answers

Answer 1

Answer:

√−100 = 0 + 10i

Step-by-step explanation:

i is equal to the square root of -1

change sqrt(-100) to sqrt(-1) * sqrt(100)

i * 10

10i

Related Questions

6-8(x+3)+5x>6x-(2x-5)+12​

Answers

If you are solving for x

Isolate the variable by dividing each side by factors that don't contain the variable.
Inequality Form:
x<−5
x<-5
Interval Notation:
(−∞,−5)

Pls helpppp what’s the y in the solution

Answers

Answer:

Y axis

Step-by-step explanation:

Answer:

Y axis

Step-by-step explanation:

Round to the nearest hundredth O(5x + 2) = 2(9x - 6) Type your answer...​

Answers

Answer:

Solving the expression and round to the nearest hundredth

[tex]0(5x+2)=2(9x-6)[/tex] we get [tex]\mathbf{x=0.67}[/tex]

Step-by-step explanation:

We need to solve the expression and round to the nearest hundredth

[tex]0(5x+2)=2(9x-6)[/tex]

Solving:

[tex]0(5x+2)=2(9x-6)[/tex]

We know that multiplying anything by zero we get zero

[tex]0=2(9x-6)[/tex]

Switching sides

[tex]2(9x-6)=0[/tex]

Multiplying 2 with terms inside the bracket

[tex]18x-12=0[/tex]

Adding 12 on both sides

[tex]18x-12+12=0+12\\18x=12[/tex]

Divide both sides by 18

[tex]\frac{18x}{18}=\frac{12}{18}\\x=0.666[/tex]

Rounding to nearest hundredth we get:

[tex]x=0.67[/tex]

So, solving the expression and round to the nearest hundredth

[tex]0(5x+2)=2(9x-6)[/tex] we get [tex]\mathbf{x=0.67}[/tex]

Find the measures of the angles in a triangle with the ratio of 2:7:9

Answers

Answer:  20, 70, 90

====================================================

Work Shown:

Let x be some positive real number.

Multiply each part of the given ratio by x to get 2x:7x:9x

So we have the three angles 2x, 7x, and 9x.

For any triangle, the three angles must add to 180

2x+7x+9x = 180

18x = 180

x = 180/18

x = 10

This leads to

2x = 2*10 = 207x = 7*10 = 709x = 9*10 = 90

The three angles of this triangle are: 20, 70, 90

This is a right triangle due to the 90 degree angle.

Three different bags of pretzels are sold at the store. Which bag of pretzels is the best buy?
Bag A:10 ounces for $1.10
Bag B:12 ounces for $1.38
Bag C: 6 ounces for $0.84
A. Bag A
B. Bag B
C. Bag C
D. Bag A and Bag B are equally good values

Answers

Answer:

A: 11 cents per ounce

B: 11.5 cents per ounce

C: 14 cents per ounce

Bag A would be the best buy

7th grade math , help me pleasee :(

Answers

Answer: translate 10 units down, then reflect across the y axis

Step-by-step explanation:

Answr unit is 10


Step by step explanation

Jackson biked k kilometers. Maria biked 8 more kilometers than Jackson. Peter biked 2 fewer kilometers than Jackson.

Drag and drop the expressions into the boxes to write an expression that represents the total number of kilometers Jackson, Maria, and Peter biked in all.

k
8
12
k+2
k+8
k+10
k-2
k-8

Answers

Answer:

Step-by-step explanation:

The expression for the total distance covered.

k + (k + 8) + (k - 2)

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

Distance biked:

Jackson = k

Maria = k + 8

Peter = k - 2

Now,

The total distance biked.

= k + k + 8 + k - 2

= 3k + 6

= 3 (k + 2)

Thus,

The total distance covered is 3 (k + 2).

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ2

Line passes through ( 2,4 ) with slope = 3

Answers

Answer:

the slope intercept-form of an equation of a line is y=mx+b

Given that the slope is 3 and a point on the line is P(-2, 4), then

m=3 and from the point (-2, 4), x=-2 and y=4.

Step-by-step explanation:

y=mx+b.

4=3(-2)+b   Now solve for b.

4=-6+b

4+6=b

10=b

Now you know b=10 and you already know the slope m=3. Substitute these values into y=mx+b. When you do you will get y=3x+10. This is your answer in slope intercept form.

please answer a soon as possible
A gallon of paint can cover 75 square feet. Maddie is painting a wall that measures 12x8.How many square feet will be uncovered if she only has one gallon of paint ​

Answers

12 x 8 is 96. Since a bucket of paint can cover 75,you would subtract 96 from the 75.That gives you 21.So if she only has one gallon,only 21 will remain unpainted.

Hope this helps-Nea

Can someone find the factors of this equation I’ll mark u as brainlist

Answers

Answer:

x = -4 , x = -1

Step-by-step explanation:

x² + 5x + 4 = 0

1) write 5x as a sum

x² + 4x + x + 4 = 0

2) factor out x from the expression

x ( x + 4 ) + x + 4 = 0

3) factor out x + 4 from the expression

( x + 4 )( x + 1 ) = 0

4) the product of factors equals to 0

i) x + 4 = 0

x = -4

ii) x + 1 = 0

x = -1

Yards Feet Use the table to complete the work and find the missing value. 5 yards = 15 feet 2. CO 5 yards _15 yards 15 feet ? feet 5 15 15 yards = feet 7 21 15 ? plssssss help me plssss​

Answers

Answer:

45 i got it wrong twice and this is what it gave me

Step-by-step explanation:

what is Use the table to solve the inequality 2x<2.

x −1 0 1 2 3
2x

Answers

Answer:

x less than 1

Step-by-step explanation:

please please pleaseeeee help me!!

Answers

Answer:

wanna see my pokemon cards

Step-by-step explanation:

Seven students took a spelling test. The following represents each student’s score. What is the median score?

24, 25, 25, 33, 35, 36, 39

Answers

Answer:

33

Step-by-step explanation:

please mark me as brainliest!!<3

33 definitely agree

What is the ratio 28 : 35 written in lowest terms?
09:15
07:19
0 4:5
03:7

Answers

Answer:

4:5

[tex]28 : 35 = \frac{28}{35} = \frac{4}{5} = 4 : 5 [/tex]

04:5
Ndnndndnnsnsndbbdbdbdb

1.36 as a fraction help

Answers

Answer: 34/25

Step-by-step explanation:

(136÷4)(100÷4) = 34/25 when reduced to the simplest form. As the numerator is greater than the denominator, we have an IMPROPER fraction,

Answer:

The answer is 1 [tex]\frac{9}{25}[/tex]

Jonathan is buying 1 new iPhone for $659 and three new pairs of headphones for $25 each which equation can be used to find y the total price Jonathan must pay

Answers

Answer: 659+(3*25)=y

Step-by-step explanation:

Answer:

734

Step-by-step explanation:

multiply the 25 by 3

next you add what you get from 25 x 3 to the price of the iphone

Alex has a 48 -ounce sports drink. He drinks 16 ounces. What
percentage of ounces does Alex have left of his sports drink?

Answers

Answer:

32% or just 32

Step-by-step explanation:

Plot two points that are 8 units from Point B and also share the same x-coordinate as Point B. y​

Answers

Answer:

y

Step-by-step explanation:

Answer: I don't know I'm sorry

what is 45% of 7/10:)

Answers

Answer: 45% of 7/10 is 0.315

Abby wants to buy a new purse for $23.57. She gives the cashier a $20 bill and a $10 bill. How much change does she get back?​

Answers

Answer:

$ 6.43

Step-by-step explanation:

Answer:

She gets back $6.43 dollars as change

Step-by-step explanation:

If you add 20 and 10 you get 30, and if u subtract 23.57 from 30 like this, 30.00 - 23.57

       30.00                         29.99                  

    -  23.57                     -   23.57

                                     ------------------

                                          06 .42

Hope this help :)

⚠️⚠️FIND THE MISSING LENGTH OF THE TRIANGLE⚠️⚠️
⚠️⚠️HURRY PLEASE⚠️⚠️
⚠️⚠️DO QUESTIONS 5 AND 7⚠️⚠️

Answers

Answerlol

Step-by-step explanation:

1. Miranda is braiding her hair. Then she will attach
beads to the braid. She wants of the beads to
be red. If the greatest number of beads that will
fit on the braid is 12, what other fractions could
represent the part of the beads that are red?​

Answers

Complete question :

Miranda is braiding her hair then she will attach beads to the braids she wants 1/3 of the beads to be red if the greatest number of beads that will fit on the braid is 12 what other fraction could represent the part of the beads that are red?

Answer:

2 / 6

Step-by-step explanation:

Fraction of red beads on braid = 1/3

greatest number of braids = 12

Fraction of red beads = (1 /3) * 12 = 4 red beads

Thus implies that :

When greatest number of braids = 12

fraction of red beads) = (Number of red beads / greatest number of beads)

Fraction = 4 / 12

Divide by 2 = 2/6 (don't reduce to lowest term).

Least to greatest!
hope you have a good day​

Answers

7.083, 7.2, 7.21
hope I helped :)

Which of the following is not a right triangle?
Group of answer choices

3 in, 4 in, 5in

6 in, 11 in, 13 in

8 in, 15 in, 17 in

15 in, 20 in, 25 in

Answers

8 15 17 i think no clue really

What is the value of n in the equation below? 9 n − 24 = 4 n + 6 A. –3 B. –6 C. 5 D. 6

Answers

First you want to get n on the side by itself.

So 9n-24=4n+6 you want to add 24 to both sides so you get 9n=4n+30 than you want to subtract 4n from both sides to get 5n=30 than divide 5 from both sides to get n by itself and you will get n=6

Simplify to create an equivalent expression. 3n+2(−2n−1)

Answers

Answer:

3n+2(-2n-1)

3n+[-4n-2]

3n-4n-2

-n-2

If

-n-2=0

Answer:

-n - 2

Step-by-step explanation:

Please answer quickly


Given: sin(A) = 4/5, pi/2 < A < pi and sin(B) = -2root5/5, pi < B < 3pi/2 What is the value of cos(A – B)?

Answers

Answer:

-√5/5

Step-by-step explanation:

Given the following

sin(A) = 4/5

sinB - -2√5/5

SinA = 4/5 = opp/hyp

We can get cosA

opposite = 4

hypotenuse = 5

Adj = √5²-4² (pythagoras theorem)

Adj = √25-16

Adj = √9

Adj = 3

Cos A = Adj/hyp

Cos A = 3/5

Also

Sin B = -2√5/5 = opp/hyp

opposite = -2√5

hypotenuse = 5

Adj = √5²-(2√5)² (pythagoras theorem)

Adj = √25-20

Adj = √5

Cos B = Adj/hyp

Cos B =  √5/5

Evaluate cos (A-B)

cos (A-B) = cosAcosB + sinAsinB

cos (A-B) = 3/5(√5/5)+4/5(-2√5/5)

cos (A-B)  = 3√5/25 - 8√5/25

cos (A-B) = -5√5/25

cos (A-B) = -√5/5

Hence the value of cos (A-B) is -√5/5

I WILL GIVE YOU BRAINLY PLSS


Victor scored a 9, 7, and 10 on his first three math tests. What score must he get
on his fourth test to have a score of at least 34 points?
A. ≥ 8
B. 9
D. > 8


PLSS SHOW YOUR WORK PLSS

Answers

Answer:

9

Step-by-step explanation:

9+10+7=26. 9+26=35 so he has 35 points which is more than 34. hope this helps

The equation ey = 2x is equivalent to .

Answers

Answer: y=In 2x

Step-by-step explanation:

Answer:

The equation ey = 2x is equivalent to  

✔ y = ln 2x

.

Step-by-step explanation:

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