The number of particles the compound consists of is 7.65 × 10²⁴.
It is given that
Number of moles n = 12.7
As we know the formula for the number of particles:
N=n× Nₐ
Where Nₐ is Avogadro's Number, n is the number of moles.
What is Avogadro's Number?Avogadro's Number is the number of units in one mole of any substance (defined as its molecular weight in grams), equal to 6.02214076 × 10²³.
So, the number of particles:
N= 12.7 × 6.02214076 × 10²³.
N=7.65 × 10²⁴
Therefore, the number of particles the compound consists of is 7.65 × 10²⁴.
To get more about the Avogadro's number refer to the link,
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221x3 + 154x2 + 228x + 41) / (17x + 4)
help?
Anna selects a positive multiple of 4 that is less than forty, and Becky selects a positive multiple of 3 that is less than sixty. What is the probability that they pick the same number?
I will mark brainliest!
Answer:
3/171
Step-by-step explanation:
The problem can be simplified into finding probability that Anna and Becky select 12 or 24 or 36 which are less than 40 and multiples of 3 and 4.
Probability of Anna selecting 12 = 1/9
Probability of Becky selecting 12 = 1/19
Probability of Anna and Becky selecting 12 = 1/9 * 1/19 = 1/171
Probability of Anna and Becky selecting 12 or 24 or 36 = 3* 1/171 = 3/171
The length of a rectangle is 2 centimeters longer than its width.
If the perimeter of the rectangle is 64 centimeters, find its length and width.
Answer: 15
Step-by-step explanation:
Let the length of the width = w.
Then, the length of the length is w + 2.
The perimeter of a rectangle is 2*length + 2*width.
Therefore, 2*(w+2) + 2*w = 64
2w + 4 + 2w = 64
4w + 4 = 64
4w = 60
w = 15
If chicken costs 10¢ per ounce and grain costs 1¢ per ounce, how many ounces of each should
Ruff use in each bag of dog food to minimize cost?
The cost of the chicken and the grain are illustrations of linear programming
The minimized cost is 12¢
How to determine the minimized costRepresent the number of chicken with x and the number of grain with y.
So, the objective function is
Min Z = 10x + y
The constraints are not given.
So, the function cannot be minimized.
However, assume the minimum feasible values of x and y are (1,2), the minimized cost would be:
Z = 10 * 1 + 2
Z = 12
Hence, the minimized cost is 12¢
Read more about linear programming at:
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The length of a rectangle is 5 more than the width. The perimeter is 120. What is the length, width, and area? Please HELP
Answer:
l = 32.5 units, w= 27.5 units, A = 893.75 units²
Step-by-step explanation:
width is w
length is l = 5+w
P = 2( l+w) , substitute l for 5+w
P = 2(5+w+w)
P = 2(5+2w)
P = 10 +4w
P = 120
10 +4w = 120
4w = 120-10
4w = 110
w= 110/4
w= 27.5 units
l = 5+w = 5+ 27.5 = 32.5 units
A = l*w = 27.5 * 32.5 = 893.75 units ²
by rounding each number to 1 significant figure, estimate the answer to 623 - 14.71 ÷ 0.54.
623 to 1 significant number = 600
14.71 to 1 significant number = 10
0.54 to 1 significant number = 0.5
answer:
[tex]\tt \dfrac{600-10}{0.5}=1180[/tex]
PLS PLS PLS HELP ME...
Answer:
10
Step-by-step explanation:
Take the bottom number from the smaller triangle and multiply by 10 (just like they did for the 3 which is how they turned it into 15)
Solve the system of equations x - 4y = 7
2x + y = 5
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6 The system of equations shown below has no solution.
Change one number in one of the equations so that the
system has one solution. Graph your new system on
the coordinate grid to support your answer.
y= 2x – 1
y = 2x + 1
Answer:
its b
Step-by-step explanation:
Thabo rounded the number to the nearest 5. His answer was 340. Write down 2 possible number for the actual number of marbles
Answer:
Two possible values: 339 and 341.
Step-by-step explanation:
Any number that satisfies 335<x<345
Write the inequality:
Two less than twice a number is less than a half.
Answer:
2x-2<1/2
Step-by-step explanation:
when the problem says "two less than" it means we are subtracting 2 from something, in this case, that something is "twice a number" as the problem states. So we would write 2x where x is a variable that represents any number so we have 2x-2<1/2.
Rearrange each of the following formula so the pronumeral in the bracket becomes the subject of the equation
9x+3y-27=0
(Y)
Answer:
y = 9 - 3x
Step-by-step explanation:
9x + 3y - 27 = 0 ( add 27 to both sides )
9x + 3y = 27 ( subtract 9x from both sides )
3y = 27 - 9x ( divide through by 3 )
y = 9 - 3x
16.) The population of Wolf County was 12,390 in 2000 and 13,090 in 2010. Assuming that population growth in this county is linear, find the following:
b.) When will the population reach 21,000 people?
c.) When did the first settlers arrive in Wolf County?
What is the y-intercept of the graph of y = 2.5'?
a. 2.5
b. 1
a
C.
0
d. -1
PESERVED
Answer:
a. 2.5..... I believe but you should get other answers
solve for brainliest please
Answer:
136 = 9x+10 (alternate interior angles for parallel lines m and n)
9x = 126
x = 14
Step-by-step explanation:
Stop by my you tube channel "Sciency Sergei". You may suggest a topic to discuss or problem to solve.
Malaya creates a password as follows: letter, number, letter, special character, number Assuming that there are 12 special characters, if you were trying to guess Malaya’s password, what is the most guesses that you would have to make? a. 702,000 b. 811,200 c. 205,476,480 d. 254,803,968.
Answer:
✅ B. 811,200edgen
Answer:
B
Step-by-step explanation:
got it right on edge
Un club de football decide de vendre des tee-shirts
Answer:
1) the purchase price
(4.30+1.45)*2000
5.75*2000
11500€
2) the profit
(1750*10.50+(2000-1750)*8.50)-11500
18375+2125-11500
9000€
Step-by-step explanation:
Could someone explain to me how to solve these questions?
Answer:
you combine the numbers that are the same and see the signs if it's positive with the negative, it's going to be negative
HELLLLPPPPPLPPOOLL no fake answers pls
Answer:
x = 11
Step-by-step explanation:
(3x + 28) + (5x + 52) + ( 2x - 10) = 180
(3x + 5x + 2x) + (28 + 52 - 10) = 180
10x + 70 = 180
10x = 180 - 70
10x = 110
x = 11
Answer:
x= 11
Step-by-step explanation:
(3x + 5x) + (5x+52) + (2x-10)= 180 (sum of anglea in a triangle)
10x+80-10= 180
10x+70=180
10x=180-70
10x=110
x=110÷10
x=11
16. Which of the following ordered pairs is found in the solution of inequality 3x + 5y ≤ 10?
a. (0,0)
b. (0,3)
c. (1,2)
d. (2,1)
17. Which of the following ordered pairs cannot be found in the solution of the inequality x + y ≥ 7?
a. (1,5)
b. (3,4)
c. (4,4)
d. (5,5)
18. Which of the following region represent the point in the solution of the inequality y > 1?
a. Above the line y = 1
b. Below the line y = 1
c. On and above the line y = 1
d. On and below the line y = 1
19. Which of the following regions represent the points in the solution of the inequality x ≤ 1?
a. Left of the line x = 1
b. On and left of the line x = 1
c. On and right of the line x = 1
d. Right of the line x = 1
20. although represent the boundary line of the graph of the inequality 2x + y < 5?
a. Dashed line
b. Solid line
c. None of the above
d. Cannot be determine
Help me please
Answer:
1 a
2 a
3 a
4 a
5 a
Step-by-step explanation:
All answers are A
Joe's total bill for pizza and soft drinks was $27.50. He left a
20% tip for their server. How much tip did he leave?
Answer:
$5.50
Step-by-step explanation:
100% of the total bill was $27.50
10% will be 100% divided by 10
10% = $27.50 ÷ 10
10% = $2.75
20% will be double 10%
20% = £2.75 × 2
20% = $5.50
Find the value of x. Leave your answer in simplest radical form.
Answer:
First you need to find at least two dimensions of the triangle containing a side length of x. The triangle of the top can be used for that. The hypothenuse for the 7,3 triangle is [tex]\sqrt{58}[/tex].
Now we can use the other triangle with sides of x,[tex]\sqrt{58}[/tex], and a hypothenuse of 9 to find x.
x^2 + [tex]\sqrt{58}^2[/tex] = 9^2
simplify
x^2 + 58 = 81
subtract 58 from both sides
x^2 = 23
x = [tex]\sqrt{23\\}[/tex]
and since this radical cannot be simplified further that is your answer.
Step-by-step explanation:
Step-by-step explanation:
Pythagoras.
c² = a² + b²
c being the Hypotenuse (the side opposite of the right angle).
so, the length of the rectangle is the Hypotenuse of the right-angled triangle on the top :
length² = 7² + 3² = 49 + 9 = 58
length = sqrt(58)
the diagonal of the rectangle is again the Hypotenuse of the right-angled triangle of length (sqrt(58)), width (x) and diagonal (9) of the rectangle.
so, we have
9² = sqrt(58)² + x² = 58 + x²
81 = 58 + x²
23 = x²
x = sqrt(23)
The width of a rectangle is 4 inches, and the length is 9 inches, what is the length of a side to a square that has the same area as a rectangle
Answer:
36
Step-by-step explanation:
9x4=36
In a scale drawing, a sofa is 3 inches long, if the actual length of the sofa is 5 feet long, find the scale factor.
Answer:
Whats the square unit???
Step-by-step explanation:
The perimeter of a square window is 148 inches. How long is each side?
Michael buys a pair of jeans that regularly costs $62. The jeans were discounted 30%. How much money did Michael pay for the jeans?
Plss help
Answer:
$43.40
Step-by-step explanation:
First, you would have to find out how much was discounted. To find this, you multiply $62.00 (the total) by 30% (the discount sale). You will end up getting $18.60. Finally, you can subtract $18.60 from the original total which was $62.00 to get $43.40 after the discount.
I need help please help me !!!!
Answer:
C
Step-by-step explanation:
hope this helps :)))))
Evaluate the expression
−1+(4/2(6−1))2
Answer:19
Step-by-step explanation:
−1+(
4
2
(6−1))(2)
=−1+2(6−1)(2)
=−1+(2)(5)(2)
=−1+(10)(2)
=−1+20
=19
Find the geometric mean of 8 and 253.
Answer:
2√506
Step-by-step explanation:
√8x253 = √2024 = √4x506 = 2√506
The average annual salary of a professional football player has increased exponentially, according to the data in the
table.
Professional Football Player
Year Average Salary
2000 $1,116,000
2005
$1,400,000
2010 $1,900,000
2015 $2,447,000
2020 $3,193,000
What is the best prediction of the average annual salary of a professional football player in 2025?
$4,166,000
$3,400,000
$4,696,000
$3,712,000
The best prediction of the average annual salary of a professional football player in 2025 is $4,166,000
Exponential functionAn exponential function is in the form:
y = abˣ
Where y,x are variables, a is the initial value of y and b is the multiplication factor.
Let y represent the average annual salary, x years since 2000, hence, from table:
At (2000, 1116000), that is (0, 1116000):
1116000 = ab⁰
a = 1116000
At (20, 3193000):
3193000 = 1116000(b)²⁰
b = 1.05
The salary in 2025 ( x = 25) is:
y = 1116000(1.05)²⁵ = 4152719.5
The best prediction of the average annual salary of a professional football player in 2025 is $4,166,000
Find out more on exponential function at: https://brainly.com/question/12940982
