Answers
5r-2 = 4r+4
subtract 4r from both sides
r-2 = 4
add 2 to both sides
r = 6
r = 6
Related Questions
How many liters of water are in a tank with a volume of 4,500 cm3
1 L = 1,000 cm
04.0L
0 4.5 L
0 45 L
0 0.45 L
Answers
Another statement is, "Volume is directly proportional to the number of moles."
The volume increases as the number of moles increases. It does not depend on the sizes or the masses of the molecules.
V
∝
n
, where
V
is the volume, and
n
is the number of moles.
V
n
=
k
, where
k
is a proportionality constant.
We can rewrite this as
V
1
n
1
=
V
2
n
2
Equal volumes of hydrogen, oxygen, or carbon dioxide contain the same number of molecules.
STP is 0 °C and 1 bar.
One mole of an ideal gas occupies 22.71 L at STP. Thus, its molar volume at STP is 22.71 L
Example Problem
A 6.00 L sample at 25.0 °C and 2.00 atm contains 0.500 mol of gas. If we add 0.250 mol of gas at the same pressure and temperature, what is the final total volume of the gas?
Solution
The formula for Avogadro's law is:
V
1
n
1
=
V
2
n
2
V
1
=
6.00 L
;
n
1
=
0.500 mol
V
2
=
?
;
m
m
l
n
2
=
0.500 mol + 0.250 mol = 0.750 mol
V
2
=
V
1
×
n
2
n
1
V
2
=
6.00 L
×
0.750
mol
0.500
mol
=
9.00 L
Factor.
Z^2-9z+20
BOX METHOD WITH STEPS PLZ!!
Answers
Answer:
(z−4)(z−5)
Step-by-step explanation:
We need two numbers that...
Add together to get -9
Multiply together to get 20
-4 and -5 do just that!
So you fill in the blanks and get (z−4)(z−5)
Hope this helps :)
You guys get 100 points by just typing m on this question
Answers
Answer:
Typing M on this question
Answer:m
Step-by-step explanation:
Norma and Albert both clean pools. Each charges a flat fee to clean a pool. Norma cleans 12 pools in 8 hours and earns $270. Albert cleans 9 pools in 7.5 hours and earns $195.75. 1.) Identify and describe the ratio that compares the number of pools Norma cleans per hour to the number of pools Albert cleans per hour. *
Answers
Answer:
1.5 per hour : 1.2 per hour
Step-by-step explanation:
The computation of the ratio is shown below:
For norma, the one pool would be
= 12 pools ÷ 8 hours
= 1.5 per hour
And for albert, the one pool would be
= 9 pools ÷ 7.5 hours
= 1.2 per hour
So the ratio between them is
1.5 per hour : 1.2 per hour
Find the value of each variable.
Answers
Step-by-step explanation:
4x+23= 10x-1
14x= 24
x= 1.714
the measure of the two sides is 16.143
Pls help me out... :)
Answers
Answer:I think the answer is 112
Step-by-step explanation:
Which equations matches the graph shown below ?
Answers
Answer:
its y= -0.3(x-2)^2-5
Step-by-step explanation:
Evelyn bought 60 tickets for rides at an amusement park. Each ride costs 3 tickets, and Evelyn has been on x rides so far. Select all the expressions that show the number of tickets that Evelyn has left.
Answers
Answer:
I believe your answer will be E, A, and C
Step-by-step explanation:
If she has 60 tickets and each ride is 3 tickets but she has been on x rides you would do 3x and subtract that from 60.
Answer:
a,c,e
Step-by-step explanation:
60 is the total number of tickets, so b and d are wrong because you are no adding to the total number of tickets.
Find the area of this composite figure.
Answers
Answer: 279.36 cm
Step-by-step explanation: if you split the shape into 2 different shapes and do 6x 6x 7.2 =25.92 and then 2.8 x 7.2=20.16 then you add then together and get 279.36
Answer: 63.2 cm²
All work is shown in the picture below.
PLSSSSSS HELPPPPPPP FAST WILL GIVE BRAINLIEST ITS IREADY!!!!!!!!!!! PLSSSSS HELPPPPPPPPPPPPPP
Answers
2 yellow paint, 6 blue paint
Answer:
put the blue paint to 6 and the yellow to 2
PLEASE HELP ME!!!!!
Max lost 23 pounds while on a diet. He now weighs 185 pounds. Write an equation that represents this scenario. Use the variable m . What does the variable represent?
Expression: Answer (as integer):
Interpretation:
Answers
Answer:
[tex]m-23=185[/tex], with [tex]m[/tex] representing Max's original weight
[tex]m=208[/tex]
Max weighed [tex]208[/tex] pounds before he went on his diet
Step-by-step explanation:
plz mark me brainliest. ;)
This box is 3/4 inch long 1/2 inch wide and 1/4 inch deep what is the volume of the box ?
Answers
Answer:
v = l * w * h
v = 3/4 * 1/2 * 1/4 = 3/32 or 0.09375
7. Find mDBC.
6. Find mŁABD.
Answers
DBC: 109
they are congruent angles
What is 92% of 680 kg
Answers
Step-by-step explanation:
92% of (680 kilograms) =
625.6 kilograms
How much sand is needed to fill a pit that
is 10m deep and 8m wide and 12m long?
Answers
Answer:
The answer is 960cm3
Step-by-step explanation:
you multiply all the numbers
A building manager
needs to order 9 replacement panes that are
all the same size, each similar to the window
itself. At what angles should each pane be cut
in order to fit in the window? What are the
dimensions of each pane? Explain.
96°
40.5 ft
42°
60 ft
Answers
Answer:
42,42,96
Step-by-step explanation:
The angles of each plane that must be cut to fit are 42°, 42°, and 96°.
The dimension of each plane is 13.4 ft, 13.5 ft, and 20 ft.
What is a triangle?It is a two-dimensional figure which has three sides and the sum of the three angles is equal to 180 degrees.
We have,
Two angles of the figure are:
96 and 42.
The sum of the angles in a triangle is 180°.
So,
The other angle.
= 180 - (96 + 42)
= 180 - 138
= 42
Now,
The angles of each plane must be cut in 42°, 42°, and 96°.
Now,
The side opposite to the equal angles is equal.
So,
The dimensions of the triangles are 40.5 ft, 40.5 ft, and 60 ft.
The dimensions of each plane.
= 40.5/3, 40.5/3, and 60/3
= 13.4 ft, 13.5 ft, and 20 ft.
Thus,
The angles of each plane are 42°, 42°, and 96°.
The dimension of each plane is 13.4 ft, 13.5 ft, and 20 ft.
Learn more about triangles here:
https://brainly.com/question/25950519
#SPJ5
Find the diameter of the circle shown: 7 in
Answers
Answer:
huh paki ayus p ung tanong dattebao
Answer:
The answer would be 14in
Step-by-step explanation:
This is the answer because the formula is d=2r
so ur looking for the diameter
plug in the "radius" (7in) in the formula
7 times 2 is 14
14in is ur answer!!!
En la comunidad de San Lucas tiene 565 pobladores de los cuales 4/12 son mujeres cuántas mujeres hay en San lucas
Answers
Answer:
188.33333333 habitantes
Step-by-step explanation:
En la comunidad de San Lucas hay 565 habitantes de los cuales 4/12 son mujeres, cuantas mujeres hay en San Lucas
El número total de mujeres en San lucas se calcula como :.
4/12 × 565 habitantes.
= 188.33333333 habitantes
Which statement is not true in the
equation
y = 0.5x?
Answers
Answer:
Are there set answers? Ill edit my answer after.
Step-by-step explanation:
Part A: You have $0.80 in your backpack in dimes and quarters. Let x represent the number of dimes and y represent the number of quarters. Write an equation in standard form that represents the situation
____x+____ y=____
Part B: You have $0.80 in your backpack in dimes and quarters. Let x represent the number of dimes and y represent the number of quarters. If you have 2 quarters in your backpack, how many dimes do you have?
______
Answers
Part B: Plug in what you DO know and solve the one you DON’T:
0.10x + 0.25(2) = 0.80
0.10x + 0.50 = 0.80. Subtract 0.50 from both sides:
0.10x = 0.30 (Divide both sides by 0.10)
x = 3
Therefore you have 3 dimes
Beth goes on holiday to Spain.
The exchange rate is £1 = €1.13
She changes £350 into Euros (€).
(a) Work out how many Euros she receives.
When Beth returns from holiday she changes €120 back into pounds.
The exchange rate is now £1 = €1.16
(b) Work out how many pounds (£) Beth receives.
Give your answer to the nearest penny
Answers
Answer:
A
Step-by-step explanation:
Pls hurry it’s urgent!!!!!!
Determine whether the graphs of the given equations are parallel, perpendicular, or neither.
y= 4x-2
-x+4y=0
A. Parallel
B. Perpendicular
o. Neither
Answers
Answer:
I'm pretty sure they're perpendicular, so B.
hope it's correct!
Step-by-step explanation:
i have no idea how to do geometry plz help!
Answers
Answer:
42
Step-by-step explanation:
136-94=42
Sometimes life is tricky.
Sometimes things go wrong.
Sometimes you feel out of place
Or like you don't belong.
Sometimes bed things happen.
Sometimes you'll feel scared.
But focus on the positives;
Seek them, they'll be there.
When your brain won't stop whirring,
And you can't sleep at night,
Step out of the darkness
And look into the light.
The awful things won't vanish
Like thin air
But don't let them consume
That just makes you miserable
And intensifies the gloom.
So focus on your blessings
And let them shine through.
Don't let the negatives
Be what defines you :)
An amazing thing happens when you get honest with yourself and start doing what you love, what makes you happy. You stop merely looking forward to special events. You begin to live in each moment and you start feeling like a human being. You just ride the wave that is life, with this feeling of contentment and joy. You move fluidly, steadily, calm and grateful.
Hope this helps :)
Have a great day.
Answers
thanks for the message !!
Answer: ^-^ This is nice thanks. But here's something for you! -Lily ^-^
Step-by-step explanation:
────(♥)(♥)(♥)────(♥)(♥)(♥) __ ɪƒ ƴσυ'ʀє αʟσηє,
──(♥)██████(♥)(♥)██████(♥) ɪ'ʟʟ ɓє ƴσυʀ ѕɧα∂σѡ.
─(♥)████████(♥)████████(♥) ɪƒ ƴσυ ѡαηт тσ cʀƴ,
─(♥)██████████████████(♥) ɪ'ʟʟ ɓє ƴσυʀ ѕɧσυʟ∂єʀ.
──(♥)████████████████(♥) ɪƒ ƴσυ ѡαηт α ɧυɢ,
────(♥)████████████(♥) __ ɪ'ʟʟ ɓє ƴσυʀ ρɪʟʟσѡ.
──────(♥)████████(♥) ɪƒ ƴσυ ηєє∂ тσ ɓє ɧαρρƴ,
────────(♥)████(♥) __ ɪ'ʟʟ ɓє ƴσυʀ ѕɱɪʟє.
─────────(♥)██(♥) ɓυт αηƴтɪɱє ƴσυ ηєє∂ α ƒʀɪєη∂,
───────────(♥) __ ɪ'ʟʟ ʝυѕт ɓє ɱє.
(x+3) 2 = 4
( I had an equation and I wanted to share this meme thing)
Answers
Answer:
x = - 5, x = - 1
Step-by-step explanation:
Given
(x + 3)² = 4 ( take the square root of both sides )
x + 3 = ± [tex]\sqrt{4}[/tex] = ± 2 ( subtract 3 from both sides )
x = - 3 ± 2
Then
x = - 3 - 2 = - 5
x = - 3 + 2 = - 1
Hurry please.
Which linear equations does the graph show the solution to? Select all that apply.
A. y = 2x + 13
B. y = –x – 2
C. y = 3x – 5
D. y = negative one-half x + 6
E. y = –2x – 2
Answers
Answer:
B
Step-by-step explanation:
When you plot B on a graph it intersects at the given point which is (-5,3)
Answer:
A y = 2x+13
B y = -x -2
Step-by-step explanation:
Took it on edge.
Solve for X: -2(6x+4)=88. Answer fast please
Answers
Answer:
√x+2=2
Step-by-step explanation:
What is the simplest form of this expression?
Answers
Answer:
c
Step-by-step explanation:
9x^2-9x^2=0
10x-5x=5x
4-(-1)=5
5x+5
hope this helps (:
Find the mean of 65, 67, 69, 67, 63, 60,60
Answers
Answer:
64.428
Step-by-step explanation:
well to find the mean we add all of the numbers up and then divide it by the amount of numbers in the sequence
so if we add all of the numbers up it will give us
451
then if we divide that by the number of numbers in the sequence which is 7 then that will leave us with
around 65 or exactly it would be
64.428
a printer costs $28 to manufacture and is sold for $56, what is the percentage markup
Answers
Answer:
100% increase
Step-by-step explanation: