Mathematics High School

What is the sum of the square root of 2 and the square root of -18?
O 42
0 421
O 52
O 5ſi

Answers

Answer 1

Answer:

4 ·2i

Step-by-step explanation:

√2 + √-18

√2 + √9·-2

√2 + 3√-2  

(3 +1 )(√2 ·√-2) = 2i

4 · 2i

Related Questions

If a²+b²=74 and ab=10 find the value of (a-b)²​

Answers

Answer:

54

Step-by-step explanation:

(a -b)²

= a² -2ab +b²

= a² +b² -2ab

= 74 -2(10) (subst. value of a²+b² and ab)

= 74 -20

= 54

72x–16y=1,440 write in slope intercept form

Answers

Answer:

y=9/2x -90

Step-by-step explanation: I know allLlLLLlLLLllLll...jk i dont (:

Answer:

Answer Below

Step-by-step explanation:

Hope this helps! <3

Write in the name of the molecular geometry for each molecule described below.

A molecule with two atoms and no lone pairs around the central atom has a
shape.
A molecule with four atoms and no lone pairs around the central atom has a
shape.
A molecule that has two atoms and two lone pairs around the central atom has a
shape.
A molecule that has five atoms and no lone pairs around the central atom has a
shape.

Answers

Answer:

linear

tetrahedral

bent

trigonal-bipyramidal

Step-by-step explanation:

lineartetrahedralbenttrigonal-bipyramidalWhat is molecular geometry?

Molecular geometry, also known as the molecular structure, is the three-dimensional structure or arrangement of atoms in a molecule.

a) A molecule with two atoms and no lone pairs around the central atom has a shape -Linear.

b) A molecule with four atoms and no lone pairs around the central atom has a shape- Tetrahedral

c) A molecule that has two atoms and two lone pairs around the central atom has a shape - Bent.

d) A molecule that has five atoms and no lone pairs around the central atom has a shape- Trigonal-bipyramidal.

Learn more about molecular geometry here:

https://brainly.com/question/21939862

#SPJ2

Find the range of each function when the domain is {-3, -2, 2, 3}
f(x)=5x-6​

Answers

Answer:

-21, -16, 4, 9

Step-by-step explanation:

-3: f(-3) = 5(-3)-6 = -15-6 = -21

-2: f(-2) = 5(-2)-6 = -10-6 = -16

2: f(2) = 5(2)-6 = 10 - 6 = 4

3: f(3) = 5(3)-6 = 15 - 6 = 9

In the diagram below, DE is parallel to Y. What is the value of x

Answers

180-115=65 (just writing this because my answer has to be over 20 characters)

Please help im stuck wjiesdGREE

Answers

Answer:

13/90

Step-by-step explanation:

Find the next three term of this sequence 3.2,4.3,5.4,

Answers

Answer:

6.5, 7.6, 8.7

Step-by-step explanation:

It increases by 1.1 each time.

6.5, 7.6, 8.7

This pattern is to add 1.1 each time.

Ten times a number, x, is one-half the sum of the number and three.

Which answer represents this situation?

10x=12(x+3)

10x+12x+3

10x=12x+3

10x+12(x+3)

Answers

Answer:

10x=1/2(x+3)

If you substitute numbers and characters in for words you would get this equation.

(6.-12) & (15,-3)
Need to find slope

Answers

Answer:

i look it up

Step-by-step explanation:

1. A recipe says that 4 cups of dry rice will serve 8 people. Complete the table as you answer the
questions. Be prepared to explain your reasoning.
cups of rice
number of people
o
How many people will 10
cups of rice serve?
4
8
o
6
12
How many cups of rice are
needed to
serve 42 people?
10
42

Answers

Answer:

How many cups will 10 cups of rice serve? 20

How many cups of rice needed to serve 42 people?21


WILL MARK BRAILYIST hellllpppp plzzzz

Answers

The answer is: 58 degrees

Which of the following are ordered pairs for the equation y = 1/3x + 1?
O (1,0) (2,3) (3,6)
O (0,1) (3,2) (6,3)
O (0,1) (1,4)(2,7)
O (1,0) (3,2) (6,3)

Answers

Answer:

The second answer choice; (0,1) (3,2) (6,3) is your answer.

Step-by-step explanation:

I don't know how to explain this but here's a picture of the line; y=1/3x+1

I hope this helps! :)

SOMEONE PLEASE HELP I CANT GET IT

Answers

Answer:
y=3x+9

Explanation:
To answer this question, we first have to understand a few key concepts.

1) The equation given (y=3x+9) is written in slope-intercept form, which is y=mx+b.

Heres what the variables mean:
Y=the coordinate
M=the slope
X=the x coordinate
B=the y-intercept (the point on the line that intercepts the y-axis)

2) Parallel lines have the same slope. Using the given equation, we now know that the slope of line s is 3. Therefore, the slope of line t is also 3 (because they are parallel).

So now, this is our equation so far:
y=3x+b

All we need to do now is find b, which we can do by plugging in the coordinate (-6,-9) as the x and y variables.

y=3x+b
-9=3(-6)+b
-9=-18+b
Add 18 to both sides
-9+18=-18+b+18
9=b

And when we plug 9 into y=3x+b, we get:
y=3x+9

(And yes, they are pretty much the same line)

I hope this helps! Please comment if you have any questions.

Help please the picture is above.

Answers

The answer to this one is -64, again, just plug in -9 where the x values are (:
The answer is -136

Plug in 9 for x

f(9)= -(9)^2 - 4(9) - 19

f(9) = -81 - 36 - 19

f(9) = -136

convert to a mixed number in simplest form 82/6​

Answers

Answer:

13 4/6 or 13 and 2/3

Step-by-step explanation:

82/6

find multiples of 6 closest to 82

6*13=78

82-78 is 4

13 and 4/6 or 13 and 2/3 simplified

What is m Enter your answer in the box
m

Answers

Answer:

x = 30

Step-by-step explanation:

x + 2x + 3x = 180 (Add like terms)

6x = 180 (Divide both sides by 6)

x = 30

Therefore;

x = 30

2x = 60

3x = 90

X=30
3x=90
2x=60

If you are referring m as x then first we need to understand and realize how a triangle will ALWAYS equate to 180°.

With that being said a triangle will always have 3 angles, along with them all being able to be added up at equating 180. In this case all of our angles are related to x. We want to first add up all of our angles to equal 180 (x+2x+3x=180 OR 6x+180.) now that we have our equation, we want to solve for x so we need to isolate x first, in order to get 6 out of 6x we must divide by 6 on both sides of the equation which will then give us 180/6=30.

With x equating to 30 then we simply plug in our values for the angle. 3(30)= 90, 2(30)= 60 and x=30

Explain why 10 x 2 is equivalent to 10 ÷ 1/2??

Answers

Answer: Because multiplying or dividing by the reciprocal is the same.

2x+3y=-10 Solve for y

Answers

Answer: y= -10/3 - 2x/3

Step-by-step explanation:

move all terms that dont contain y to the right side and solve

Simplify:
(11x0q6)(7x0)
I need step by step too

Answers

Answer:

(11⋅7q^6)

Step-by-step explanation:

STEP 1:

11q^6 • 7

STEP 2:

Final result :

 (11•7q6)

find the product using suitable properties a, 38 × 55 + (-45) ×38​

Answers

Answer:

= 380

Step-by-step explanation:

(38*55) + (-45*38)

(2090) + (-1710)

2090 - 1710

= 380

380 is the correct answer I believe

what number of dots has “1 from 3” code 1021?

Answers

Answer:

4 is the answer is it right

If 7/9x - 4/9x = 1/4 +5/12
what is the value of x?

Answers

Answer:

x=2

Step-by-step explanation:

subtract 7/9x -4/9x

3/9x= 1/4 +5/12

first change 1/4 to 3/12

then add 3/12 + 5/12

3/9x = 8/12

change 3/9x to 1/3x then to 4/12x

4/12x = 8/12

then mulitiply by the reciprical 12/4 on both sides

x = 2

Kelly ran 3 miles fewer than twice as far as Jim. Jim ran
m miles. Which expression represents how far Kelly ran?

Answers

Answer:

2m - 3

Step-by-step explanation:

she ran 3 miles less than twice as far as Jim

What do u think about these fr?

Answers

Answer:

They are super good!! better than me tbh lol

Step-by-step explanation:

Answer:

Yes.

Step-by-step explanation:

I like them they arent over drawn i like the simplicity and cleaness of the images you managed to do.

Which equation represents the line of reflection for this graph?
3
12
2 3 4
5
6
-2
3
-5
A
O y=2
Ox=-2
© X=0
y=-1

Answers

Answer:

x= 0

Step-by-step explanation:

Because it scale factor

What are the x and y-intercepts of the line described by the equation? -6x + 3y = 12

Answers

Answer:

(-2,0)  (0,4)

Step-by-step explanation:

Is it cheaper to buy 10 single apples or buy them in a bundle of 10?



Plz help I’m not trying to fail

Answers

it's easy to by them Cheaper tbh  with you  

and it's a quiz Right??

Answer:

A bundle always cheaper than a single apple.

Step-by-step explanation:

Bundling helps to increase efficiencies and reduce marketing and distribution  as well as maintenance cost.

Look at image please help me I’m struggling

Answers

The unit rate is 2 cookies/ 1 dollar
You can get this by looking at the slope, it goes up by 2 and then to the right by 1.

PLEASE HELP, ITS SIMPLE WILL GIVE BRAINLIEST

Answers

Answer:

What part do u need help with?

Step-by-step explanation: kaknckndnkcksnjkjs

The answer is: x is choose your answer

Answers

Answer:

All real numbers

Let's find the critical points of the inequality.

−4x+7=17

−4x+7+−7=17+−7(Add -7 to both sides)

−4x=10

−4x−1=10−1

(Divide both sides by -1)

4x=−10

4x=−10(Solve Exponent)

log(4x)=log(−10)(Take log of both sides)

x*(log(4))=log(−10)

x=log(−10)log(4)

x=NaN

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