21 = 4x - 9 - x
what is x?

Answers

Answer 1

Answer:

x = 10

Step-by-step explanation:

21 = 4x - 9 - x

21 = 3x - 9

30 = 3x

10 = x

Answer 2

Answer:

x = 10

Step-by-step explanation:

Given

21 = 4x - 9 - x, that is

21 = 3x - 9 ( add 9 to both sides )

30 = 3x ( divide both sides by 3 )

10 = x


Related Questions

A recipe requieres 1/2 cup of flour for every batch of cookies. How many full batches of cookies can be made with 5 1/2 cups of flour?
(Hint: How many 1/2's are in 5 1/2?)

Answers

ANSWER: 11

EXPLANATION:

Because 5 1/2 divided by 1/2 = 11

Hope this helps!! :)) Maybe consider brainliest?

PUZZLE: six wolves catch six lambs in six minutes. How many wolves will be needed to catch sixty lambs in sixty minutes?

no, the answer is not sixty!!

Answers

six i think cause it take each wolf 6 minutes to catch a lamb so it should still be six


A line passes through the point (-8, -1) and has a slope of
-5/4.
Write an equation in slope-intercept form for this line.

Answers

Answer:

y=-5/4x-11

Step-by-step explanation:

Plug in (-8,-1) into the equation

Get -1=-40/4

b=-11

Final equation: y=-5/4x-11

Answer:

y= -5/4x-11 is the Correct

Pls help me with #18 it has to be in simplest form 10 points

Answers

Answer:

-2p + 4

Step-by-step explanation:

7p - 1 - 9p + 5

7p - 9p + 5 - 1

-2p + 4

Stephen can deliver 14 newspapers in 20 minutes. How many HOURS will it take him to deliver 126 papers?
A) 88.2 hours
B) 180 hours
C) 3 hours
D) 1.47 hours

Answers

20 minutes is 1/3 of an hour

14 x 3 = 42

He delivers 42 papers per hour

126 / 42 = 3 hours

The answer is c

I need help with these questions

Answers

Answer:

i really dont know to be honest

A cafe is open for six days a week. There was a mean number of 86 customers for five days. On the next day there were 122 customers. What is the mean number of customers over the six days?

Answers

Answer:

92

Step-by-step explanation:

The mean is calculated as

mean = [tex]\frac{sum}{count}[/tex]

The sum of customers over the 5 days is

[tex]\frac{sum}{5}[/tex] = 86 ( multiply both sides by 5 )

sum = 430

Thus mean over the 6 days is

mean = [tex]\frac{430+122}{6}[/tex] = [tex]\frac{552}{6}[/tex] = 92

Danny has 38 coins consisting of quarters and dimes worth $6.95.How many dimes does he have

Answers

Answer:

would that be 264.1

Step-by-step explanation:

−2y−8+4y using distributive property

Answers

Hello

-2 y - 8 + 4y

= -2y + 4y -8

= 2y -8

or

2(y-4)

good day

Answer:

hope this is what you wanted

Step-by-step explanation:

simplified=2y-8

factored=2(y-4)

The Candle Company is having its seminual sale. All items are 40 percent off. If the original price of a candle basket is $120, what is the sale price

Answers

$120 - 100% $x - 40% 40 * 120 / 100 = 48 $120 - $48 = $72 The Candle Company is having its semiannual sale. All items are 40 percent off. If the original price of a candle basket is $120, the sale price is $72.

Answer:

the sale price would be $48

Step-by-step explanation:

To get the sale price you would have to find the decimal form of 40 which is 0.40. Then you multiply 0.40 by 120. And that is 48.00. So than the $48.00 becomes the sale price.

Hope that helps :)

Cual es el tiempo que debe transcurrir para que un préstamo de $ 160.000 genere un interés de $ 15.000 a una tasa del 5,5% de interés simple.

Answers

Answer:

2 años.

Step-by-step explanation:

De la pregunta anterior, se obtuvieron los siguientes datos:

Principal (P) = $ 160,000

Intereses (I) = $ 15,000

Tasa (R) = 5,5%

Tiempo (T) =?

Así, podemos obtener el tiempo que tarda el préstamo de $ 160.000 en generar un interés de $ 15.000 a una tasa de interés simple del 5,5% de la siguiente manera:

I = PRT / 100

15000 = 160000 × T × 5.5 / 100

15000 = 880000 × T / 100

15000 = 8800 × T

Dividir ambos lados por 8800

T = 15000/8800

T = 1,7

T ≈ 2 años

Por lo tanto, tomará aproximadamente 2 años.

Please answer these!I will mark the brainiest!!

Answers

Answer:

Step-by-step explanation:

i dont have paper with me rn so i cant actually write the equations, but slope intercept is y=mx+b form so all you have to do is find the slopes (y2-y1/x2-x1) and plug a coordinate into point slope form. simplify and rearrange to y=mx+b form. hope this helped

A circle has a circumference of 5 π. What would the area of the circle be?

Answers

5pi = 15.707
So around 15.707

En una tienda se venden dulces nacionales y extranjeros en una proporción de 7:3.
Si en total se vendieron 450 dulces en un día. ¿Cuántos dulces nacionales y
extranjeros se vendieron?

Answers

315 dulces nacionales y 135 dulces extranjeros

7 x 45 = 315
3 x 45 = 135
315 + 135 = 450
315 dulces yessir I got u man go at it

jhony has ten apples he eats 1 how many does he have left

Answers

its odd you're in high school and you're asking this but its 9

Write an equation of the line in point-slope form that passes through the given points.
(5,5) and (6,7)
An equation of the line is

Answers

Answer:

Step-by-step explanation:

point - slope  formula:  y - y1 = m(x-x1)

we need to find the slope ... or what is m ?

m = rise / run  

m = y2 - y1  / x2 - x1    

where the given points are  (x1,y1)  and (x2,y2)

m= 7-5 / 6-5

m = 2 / 1

m =2

now use either point and plug the slope and the point into the point-slope formula

y-5 =2(x-5)     :)

^^^^^^^^^^^^^^^^^^..!!!!!!

Answers

Answer:

Step-by-step explanation:

[tex]\sqrt{40x^{3} }[/tex]

rewrite

[tex]\sqrt{4*10*x^{2} *x}[/tex]

pull out the 4 and the [tex]x^{2}[/tex]

2x[tex]\sqrt{10x}[/tex]

a looks good

Akira is folding a piece of paper that is 0.2 millimeters thick in half. The thickness of the paper doubles with each fold.
Let n represent the fold number and t (n) represent the thickness of the paper.
Which exponential function represents this scenario?
A t(n) = 1/2 (0.2)"
B
t(n) = 0.2(2)”
с
t(n) = 0.2()"
D
t(n) = 2(0.2)”
( the " are n)

Answers

Answer:

B. t(n) = 0.2(2)ⁿ

Step-by-step explanation:

Initial value is 0.2 and increase rate is powers of 2 as it doubles with each fold.

Correct one is:

t(n) = 0.2(2)ⁿ

PLZZZZZZZZZ HELP!!!
Select the correct answer.
In 14 days, the daily high temperature in Cedar Hills dropped by 16.8 degrees Fahrenheit. What is the average daily rate of change in the high temperature in degrees Fahrenheit?
A.
+2.2
B.
+1.2
C.
+1.1
D.
-1.2
E.
-2.2

Answers

the answer choice is B.

When you isolate the variable, the goal is to get the variable
A
to equal 1.

B
on both sides of the equal sign to show they are equal.

C
by itself on one side of the equal sign and a value on the other.

D
by itself on one side of the equal sign and zero on the other side .

Answers

Answer:

C

Step-by-step explanation:

Answer:

C.

Step-by-step explanation:

You isolate the variable on one side to see what number it is equal to.

Answer: C.

tape<33333333333333333333333333333333333333333333
:) :) :) :) :) :) :) :) :) :) :) :) :) :0 :) :) :) :) :) :) :) :) :) :) :) :) : ): : )

Answers

I like tape because tape is tape

Answer:

tape

Step-by-step explanation:

tape is tape

subtract: 5/8 - 1/4
A. 1/4
B. 3/8
C. 1/2
D. 3/4​

Answers

Answer:

B

Step-by-step explanation:

I checked it and it is right hope this helps!

Answer:

Step-by-step explanation:

Anyone knows how to do this? Pls help

Answers

Answer:

E1488

Step-by-step explanation:

Since its E1200,

we find the total.

Total= time times money times interest.

1200*0.08 ( thats 8%) *3.

So, we multiply 1200*0.08*3.

the answer is 288.

1200+288 is 1488.

Hope this helps plz hit the crown :D

Help needed ASAP! Please

Answers

Answer:

Infinite amount of solutions

Step-by-step explanation:

This is because 3(x+5) = 3x+15

so then it would be 3x+15=3x+15

Any number in the X place would make this statement true

Answer: Infinitely Many solutions

Step-by-step explanation:

you distribute the 3 to ‘x’ and ‘15’ getting 3x + 15 on the right side. All together the equation is:

3x + 15 = 3x + 15

so no matter what number you decided to add, it’ll be the same answer, therefore making it infinitely solutions.

3x – 17 = 4 X = whats the answer to this

Answers

Answer:

x=-17

Step-by-step explanation:

Answer:

[tex]3x - 17 = 4x \\ \\ 3x - 4x = 17 \\ \\ x = - 17[/tex]

what is the slope of a line that passes through (-1,4) and (4,9)

Answers

Answer:

1

Step-by-step explanation:

Use rise over run, (y2 - y1) / (x2 - x1)

Plug in the points:

(y2 - y1) / (x2 - x1)

(9 - 4) / (4 + 1)

5 / 5

= 1

So, the slope is 1.

scott Consider the table below that represents a function Which number(s) below can be placed in the empty cell so that the table continues to represent a function? Select all that apply. 1.-16 2.-12 3.-8 4.19 5.20 6.43 7.47

Answers

Answer:

so sorry about the other guy point stealing they did it to me too here is the real answer

Step-by-step explanation:

Answer:

-8, -3, 2, and 15

Step-by-step explanation:

It's because you cannot have two of the same input with two different outputs.

all credit to this goes to user:happymindcraftnerd

In ΔEFG and ΔYXZ, m∠F ≅ m∠X and m∠E ≅ m∠Y. If m∠E = 62° and m∠X = 80°, what is the measure of ∠Z?

Answers

Given:

In ΔEFG and ΔYXZ, ∠F ≅ ∠X and ∠E ≅ ∠Y. If m∠E = 62° and m∠X = 80°.

To find:

The measure of ∠Z.

Solution:

In ΔEFG and ΔYXZ,

∠F ≅ ∠X

m∠F = m∠X = 80°

∠E ≅ ∠Y

m∠E = m∠Y = 62°

Now, in ΔYXZ,

[tex]m\angle X+m\angle Y+m\angle Z=180^\circ[/tex]      [Angle sum property]

[tex]80^\circ+62^\circ+m\angle Z=180^\circ[/tex]

[tex]142^\circ+m\angle Z=180^\circ[/tex]

[tex]m\angle Z=180^\circ-142^\circ[/tex]

[tex]m\angle Z=38^\circ[/tex]

Therefore, the measure of ∠Z is 38°.

Answer:

∠Z=38°.

Step-by-step explanation:

Given: ∠E ≅ ∠Y, ∠F ≅ ∠X ≅ ∠∠X and ∠X = 80°.

Refer to the image below:

Since ∠E ≅ ∠Y and ∠F ≅ ∠X, this muse mean that  ∠G ≅ ∠Z. Now if ∠X = 80°, ∠F has to equal the same since the two are congruent. If you substitute the rest based off of the given, ∠Z=38°.

A music company offers lessons. They charge a registration fee $30 and the $40 per lesson. The equation y=40x+30 represents the total cost y of x lessons.

What is the y intercept and what does it represent in the context of the problem?

What is the slope and what does it represent in the context of the problem?

What is the total cost if 6 lessons where taken?

Answers

Answer:

The y-intercept is 30 and represents the registration fee

The slope is 40 and represents the cost per lesson

The total cost of 6 lessons is $270

Step-by-step explanation:

The form of the linear equation is y = m x + b, where

m is the slope of the line ⇒ rate of changeb is the y-intercept ⇒ initial value

∵ A music company charges a registration fee of $30 and $40 per lesson

∵ The equation y = 40x + 30 represents the total cost y of x lessons

→ By comparing it with the form of the linear equation above

m = 40

b = 30

∵ b represents the y-intercept

The y-intercept is 30

∵ The y-intercept is the initial value (value y at x = 0)

The y-intercept represents the registration fee

∵ m is the slope

The slope is 40

∵ The slope represents the rate of change

The slope represents the cost per lesson

∵ x represents the number of lessons

∵ The number of lessons is 6

x = 6

→ Substitute x by 6 in the equation to find the total cost of 6 lessons

∵ y = 40(6) + 30

∴ y = 240 + 30

y = 270

∵ y represents the total cost

The total cost of 6 lessons is $270

who can give me some extra points I need it please​

Answers

Answer: sometimes I do giveaways for free points on my page! I may do one later today!!

Step-by-step explanation:

Answer:

meeeee I want free points

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