Trying to finish khan academy. I need to simplify. How do I do it?

Trying To Finish Khan Academy. I Need To Simplify. How Do I Do It?

Answers

Answer 1

Answer:

-5+5k-8k-20

-3k-25

-(3k+25)

Answer 2

Answer:

Step-by-step explanation:

(-5 - -25k) - (8k + 20) =

-(18k - 15)


Related Questions

find the LCM of denominator 3/8 and 3/4​

Answers

Answer:

Step-by-step explanation:

Actually, it is 8.

3/8: nothing need be done.

3/4: Multiply top and bottom of the fraction by 2.

3*2 / 4*2 = 6/8

So the lowest common multiple is 8.

The factions become 3/8 and 6/8

The distance from earth to the moon is about 3.84 times 10^6 meters. what is one fourth of this distance

Answers

3.84 x 10^6 = 3,840,000

3,840,000 / 4 = 960,000

If the distance from the earth to the moon is about 3.84 x 10⁶.One-fourth of this distance will be 960,000

What is an arithmetic operation?

It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has basic four operators that are +, -, ×, and ÷.

It is given that, the distance from the earth to the moon is about 3.84 x 10⁶.

One-fourth of this distance is found by dividing the total distance by 4.

We'll apply division by Splitting into equal halves or groups, the division may be used to decide how to distribute a dish of cookies evenly among a group.

Suppose the one-fourth of this distance will be x,

(1/4)× 3.84 x 10⁶ =x

x=(3.84 x 10⁶)/4

x=960,000

Thus, if the distance from the earth to the moon is about 3.84 x 10⁶. One-fourth of this distance will be 960,000

Learn more about the arithmetic operation here:

brainly.com/question/20595275

#SPJ5

Instructions: Find the value of the trigonometric ratio. Make sure to simplify the fraction if needed. 50 Points!!

Answers

Tan = opp/adj

Opp of C = 36

Adj of C = 15

Tan = 36/15 simplified = 12/5

hope this helps :)

Answer:

tanC = [tex]\frac{12}{5}[/tex]

Step-by-step explanation:

tanC = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{AB}{BC}[/tex] = [tex]\frac{36}{15}[/tex] = [tex]\frac{12}{5}[/tex]

WILL GIVE BRAINLIEST HELP HELP HELP

Answers

Answer:

Divide y by x. The answer is 8

For example 252 divided by 30 equals 8.4

Round it out to 8.

Answer:

The answer is A

Step-by-step explanation:

you divide the Y by the X

x over 6 space equals space 10 over 12 ; x

Answers

Let's break this problem down in a few steps

x over 6 ⇒ x divided by 6 ⇒ [tex]\frac{x}{6}[/tex]10 over 12 ⇒ 10 divided by 12 = [tex]\frac{10}{12}=\frac{2*5}{2*6} =\frac{5}{6}[/tex]

Since these two fractions are equal to each other, let's solve for x

  [tex]\frac{x}{6}=\frac{5}{6} \\6x=30\\x = 5[/tex]

Thus x = 5

Hope that helps!

Answer:

[tex]x = 5[/tex]

Step-by-step explanation:

Step 1:  Convert to an expression

x over 6 equals 10 over 12

[tex]\frac{x}{6}=\frac{10}{12}[/tex]

Step 2:  Cross multiply

[tex](x * 12) = (6 * 10)[/tex]

[tex]12x = 60[/tex]

Step 3:  Divide both sides by 12

[tex]\frac{12x}{12} = \frac{60}{12}[/tex]

[tex]x = 5[/tex]

Answer:  [tex]x = 5[/tex]

What do a rectangle and a kite have in common?

Answers

Answer:

- Both are quadrilaterals.

- Both have two pairs of side of equal length.

I hope my answer helps you.

Answer: 2 pairs of congruent sides

Hope this helps!

have a nice day!

Find the gradient of the line segment between the points (1,2) and (3,-8)?

Answers

Answer:

-5

Step-by-step explanation:

[tex]gradient=\frac{y_{2}-y_{1} }{x_{2}-x_{1}}[/tex]

              =[tex]=\frac{-8-2 }{3-1}[/tex]

             =-5

Hope it helps:)

Solution:-

[tex]\textsf{The gradient of a line passing through two}[/tex][tex]\sf{given \: points \:(x_1,y_1) \:and \:(x_2,y_2) \: is \:given \: by - }[/tex]

[tex]\green{ \underline { \boxed{ \sf{ Gradient =\frac{y_2-y_1}{x_2-x_1}}}}} [/tex]

Here,

[tex]\sf{x_1= 1}[/tex][tex]\sf{y_1=2}[/tex][tex]\sf{x_2=3}[/tex][tex]\sf{y_2= -8}[/tex]

Putting Values:-

[tex]\begin{gathered}\begin{gathered}\\\implies\quad \bf Gradient =\frac{-8-2}{3-1} \\\end{gathered} \end{gathered} [/tex]

[tex]\begin{gathered}\begin{gathered}\\\implies\quad \bf \frac{\cancel{-10}}{\cancel{2}} \\\end{gathered} \end{gathered} [/tex]

[tex]\begin{gathered}\begin{gathered}\\\implies\quad \bf -5 \\\end{gathered} \end{gathered} [/tex]

>>The gradient of the line segment is -5

Find the center and radius of the circle represented by the equation below.
(x + 5)² + (y – 5)² = 225
1
Center:
Radius:

Answers

Answer: the center is (-5, 5) and the radius is 15

Step-by-step explanation:

the standard form of a circle is

(x-h)^2 + (y-k)^2 = r ^2 where h is the x coordinate and k is the y coordinate of the center of the circle

(h,k) = the center of the circle

r = radius

therefore,

(x+5)^2 + (y-5)^2 = 225 means that x has to be -5 since subtracting a negative creates a positive and y must be 5 as it is negative in the equation

think of it as making the sum/difference 0 within the parentheses:

(x+5) -5+5 = 0 so x=-5

(y-5) 5-5 = 0 so y =5

so the center of the circle is (-5,5)

the radius is simply 225 square rooted which is 15

hope this helps :)

What is the y-intercept of the line shown? A. 2 B. -2 C. 4 D. -4

Answers

The y-intercept will be where it crosses the y-axis. The y-axis is the line that goes up and down also know a vertically.

find the value of x to the nearest tenth

Answers

Answer:

27

Step-by-step explanation:

So in the triangle, we've got the angle as 64°. And, there's only an opposite value and the hypotenuse value therefore the trig function is sin.

  According to SOHCAHTOA,

sin=opp/ hyp

sin 64°=x / 30

Cross- multiply, then

x= 30 × sin 64°

x= 26.963

x= 27.0(nearest tenth)

PLS HELP ASAP FIRST CORRECT ANSWER GETS BRAINLIEST​

Answers

Answer:

9.7

Step-by-step explanation:

sqrt(12^2-7^2) = sqrt(95) or 9.7

HELP HELPP! GIVING LOTS OF POINTS!!!! nonsense-report

Answers

We can organize the data by making a board (i can't draw one so i'll do it in another way)

First, we have to see how many different values are there :
19 ; 21 ; 22; 23 ; 24 ; 25 ; 26 ; 27 ; 28 ; 29 ; 30 ; 31 ; 32 ; 34 ; 35 ; 36 ; 37 ; 39 ; 40 ; 43 ; 44 ;45 ; 46

Frequency :
19 : 1 time
21 : 3 times
22 : 1 time
23 : 1 time
24 : 5 times
25 : 3 times
26 : 2 times
27 : 4 times
28 : 3 times
29 : 2 times
30 : 2 times
31 : 3 times
32 : 2 times
34 : 2 times
35 : 4 times
36 : 2 times
37 : 1 time
39 : 1 time
40 : 1 time
43 : 2 times
44 : 1 time
45 : 1 time
46 : 1 time
47 : 1 time

(that was so long, now you can construct the board yourself right xd)

Find the surface area of this figure.

Answers

Answer:

760 in^2

Step-by-step explanation:

2(22*10)+2(22*5)+2(5*10) = 760in^2

Make a number line and mark the points that represent the following
values of x
2x <6

Answers

If we solve this inequality 2x > 6
We get x > 3

So it’s any points from 3 onwards (to the right side)

Select an expression that is equivalent to 10n4. Mark all that apply. A. 10nn B. 10+ C. 10n?n? D. 5(2n") E. 10-10 F. 10(n x n x n x n)​

Answers

Answer:

the answer is simple 4

Step-by-step explanation:

10n4 simple just like 10 to the 4th power

1. 17 + × = 56

2. × - 11 = 23

and for 1 the answer is not 39 ​

Answers

Answer:

2. x = 34 and 1. x = 39

Step-by-step explanation:

1. 39 is the right answer because x = 56 - 17 equals 39 which means you have to subtract.

Which of the following proves these triangles are congruent

Answers

Answer:

ASA

Step-by-step explanation:

ASA rule states that: If two angles and a non-included side of one triangle are equal to two angles and a non-included side of another triangle, then the triangles are congruent.

The image below shows the answer/explanation⬇️

Alissa has purchased land for $42,000. Its value is increasing at a rate of 1.75% per year. What will be
the approximate value of the land in 12 years?

Answers

Answer:

42000(1.0175)^12 = $51720.45

Step-by-step explanation:

PLEASE HELP W BOTH PRECALC QUESTIONS!!!

Answers

Answer:

Step-by-step explanation:

Use the formulas supplied in the picture attached. There's nothing to really learn here, it is just a plug-and-chug formula:

[tex]sin(3x)sin(2x)=\frac{1}{2} [cos(3x-2x)-cos(3x+2x)][/tex]

[tex]sin(3x)sin(2x)=\frac{1}{2} [cos(x)-cos(5x)][/tex]

Moving on to the second problem:

[tex]cos(a)sin(b)=\frac{1}{2}[ sin(a+b)-sin(a-b)][/tex]

Therefore:

[tex]2cos(a)sin(b)=sin(a+b)-sin(a-b)[/tex]

Where:

[tex]a+b=5x[/tex]

[tex]a-b=3x[/tex]

Solve for 'a' using the second equation to get:

[tex]a=3x+b[/tex]

Plug this into the first equation to get:

[tex]3x+b+b=5x[/tex]

[tex]3x+2b=5x[/tex]

[tex]2b=2x[/tex]

[tex]b=x[/tex]

Therefore:

[tex]a+x=5x[/tex]

[tex]a=4x[/tex]

Finally:

[tex]sin(a+b)-sin(a-b)=2cos(4x)sin(x)[/tex]

anyone single i am lonely and sad... contact me if you are im a male 15 years old live in alabama hope your ready to go on a date :) but any way i am gonna add a math question to this

what is 1284×342÷9×62×4÷98×2÷106?

Answers

Answer:

2329.69 is the answer......

give me a brainliest

Analyze the diagram below and answer the question that follows.

What is the value of cosA in the triangle above?

A. cosA = 0.5
B. cosA = 1
C. cosA ≈ 0.707
D. cannot be determined without side lengths

Answers

Answer:

C

Step-by-step explanation:

the cos of an angle of 45° is equal to √2/2~=0,7071

Do you want the full explanation?

can a parking lot be built at angle K. why or why not

Answers

Yea I can!! Yes it can !!!!!!

classfiy the raletionship between 7 and 2.

Answers

Answer:

they are both prime numbers

have a nice day

Hi.

The answer is below.

What do 2 and 7 have in common?Both prime numbersBoth can get to certain numbers.

2 and 7 can both get to..14

So, this is what they have in common.

#LearningWithBrainly

~NatLikesAnime!

Divide and simplify. − 8 15 ÷ − 3 5 A) − 3 25 B) − 4 5 C) 13 15 D) 8 9
A 100 points

Answers

Step-by-step explanation:

- will be cancel

then

815/35= 23.28

Four years from now, hozumi will be 2 years younger than 4 times her present age. which equation could be used to determine hozumi’s age ( h ) now, and what is her age?

Answers

Answer:

2

Step-by-step explanation:

Four years from now: h+4

Hozumi will be 2 years younger than 4 times her present age: 4h-2

h+4=4h-2

6=3h

h=2

Ben has a dog that has a mass of 9 kilograms. What is the mass of the dog in grams?

Answers

Answer:

9000 grams

Step-by-step explanation:

Keep in mind the conversion 1 kilogram = 1000 grams, as 1 kilo means 1000.

⇒ 1 kilogram = 1000 grams

⇒ Ben's dog = 9 kilogram = x kilograms = 1000x grams

⇒ x = 9

⇒ Ben's dog = 9 kilogram = 1000x grams

                                            = 1000(9) grams

                                            = 9000 grams

Answer:

Your answer is,

9000 grams

Step-by-step explanation:

Hope this helps you :)

pls mark brainliest <3

`

`

`

``Tori

Which inequality would result in the shaded solution on the unit circle to the right?

Answers

Answer: Choice B

Explanation:

Cosine is positive in quadrants I and IV, but quadrant IV isn't shaded in so we can rule out choice A.

Sine is positive in quadrants I and II. So far it looks like choice B could work. In fact, it's the answer because sin(pi/6) = 1/2 and sin(5pi/6) = 1/2. So if 0 ≤ sin(x) < 1/2, then we'd shade the region between theta = 0 and theta = pi/6; as well as the region from theta = 5pi/6 to theta = pi.

Choice C is ruled out because tangent is positive in quadrants I and III, but quadrant III isn't shaded.

Choice D is ruled out for similar reasoning as choice A. Recall that [tex]\sec(x) = \frac{1}{\cos(x)}[/tex]

Answer:

0 ≤ sin x < 1/2.

Step-by-step explanation:

sin π6 = 1/2

sin 5π/6 = 1/2

sin 0 and sin 180 = 0

The dotted line indicates that the value of the sine is less than 1/2 and the solid line indicates that value  is greater or equal to zero.

So the inequality is 0 ≤ sin x < 1/2

Part A Are squares also rectangles? Explain.​

Answers

Answer:

down below

Step-by-step explanation:

no squares and rectangles are not the same because a square has all 4 sides of the square are the same length while for rectangles have do not have same length for all four sides so therfore squares are not also rectangles

Josh’s web site had 805,289 visitors Diego’s site had 1,000,000 visitors. How many more visitors did Diego’s site have that josh’s

Answers

Answer:

194,711

Step-by-step explanation:

1,000,000 - 805, 289 = 194,711

Subtract in a calculator

Please help. this is beyond confusing. it’s stressing me out.

Answers

Answer:

D = 1120

Step-by-step explanation:

Given:

W = 70T = 4

Substitute the values into the equation:

⇒ D = WT²

[tex]\text{D = WT}^{2} \ \text{can also be written as D = (W)(T)(T)}[/tex]

⇒ D = (W)(T)(T)

⇒ D = (70)(4)(4)

Simplify the RHS:

⇒ D = 280(4)

D = 1120

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