Answers
now, since the Level III one does it in 15 hours, in 1 hour alone, how much has it done? well, it only has done 1/15 of the whole work.
the Level II has 1 hour done only 1/25 of the whole work then, and the Level I has only done 1/34 of the whole work.
now, say they all do it in "t" hours, so how much have they edited in 1 hour altogether then? well, they have only done 1/t.
[tex]\bf \stackrel{\textit{Level III rate}}{\cfrac{1}{15}}+\stackrel{\textit{Level II rate}}{\cfrac{1}{25}}+\stackrel{\textit{Level I rate}}{\cfrac{1}{34}}~~=~~\stackrel{\textit{total work done}}{\cfrac{1}{t}} \\\\\\ \textit{doing a quick prime factoring, we end up with an LCD of }\underline{2550}~thus[/tex]
[tex]\bf \cfrac{1}{15}+\cfrac{1}{25}+\cfrac{1}{34}=\cfrac{1}{t}\implies \cfrac{170~+~102~+~75}{2550}=\cfrac{1}{t}\implies \cfrac{247}{2550}=\cfrac{1}{t} \\\\\\ 247t=2550\implies t=\cfrac{2550}{247}\implies t=10\frac{80}{247}\implies t\approx 10hrs,~19min[/tex]
Related Questions
Graph the system of equations below on a piece of paper. What is the solution?
y = x – 1
y = 3x + 1

A. (2, 1)

B. (1, –2)

C. (–1, –1)

D. (–1, –2)
Answers
Answer:
Option D is correct
Solution = (-1, -2)
Step-by-step explanation:
Given the equation:
y = x – 1 ....[1]
y = 3x + 1 ....[2]
Equate equation [1] and [2] to solve for x.
[tex]x-1=3x+1[/tex]
Subtract x from both sides we have;
[tex]-1=2x+1[/tex]
Subtract 1 from both sides we have;
[tex]-2=2x[/tex]
Divide both sides by 2 we have;
x = -1
Substitute the value of x = -1 in [1] we have;
y=-1-1 = -2
Graphically:
Graph the system of equations as shown below.
The intersection point of these lines is the solution for the given system of equation
⇒ (-1, -2)
Therefore, the solution for the given system of equation is, (-1, -2)
Ronald is saving money to buy a bicycle. He has $37.80 in his savings account and saves 20% of his paper route
Answers
[tex]37.80 \times \frac{1}{5} = \frac{37.80 \times 1}{5} = \frac{37.80}{5} = 7.56[/tex]
A recipe uses 6 cups of cheese to serve 30 people. How much cheese is needed for 50 people
Answers
Which step could be used to solve x + 3.6 = -1.7 for x in one step? Check all that apply.
[ ] add 3.6 to both sides
[ ] add -3.6 to both sides
[ ] add 1.7 to both sides
[ ] add -1.7 to both sides
[ ] subtract 3.6 from both sides
[ ] subtract 1.7 from both sides
Answers
Answer: Option (2) and (5) are the correct options.
Step-by-step explanation:
Since, the given expression, x+3.6= -1.7
If we add -3.6 in both sides then we get x+3.6+(-3.6)=1.7-3.6⇒x= -1.9
while,
If we subtract 3.6 from both sides then we get x+3.6-3.6=1.7-3.6⇒x= -1.9
Thus, In the above by adding -3.6 and by subtracting 3.6 we get the value of x in one step.(because after this only x remains in LHS of the given expression)
Therefore, Option (2) and (5) are correct.
Note: Except these two options we can not get x in one step. (we can not get single x in LHS of the given expression by the other options.)
Answer:
b e
Step-by-step explanation:
What is the unit rate for 4543.08 km in 52.4 h? Enter your answer, as a decimal, in the box. km/h
Answers
hope this helps :)
Final answer:
The unit rate, or average speed, for traveling 4543.08 km in 52.4 hours is calculated by dividing the distance by the time, resulting in an average speed of 86.70 km/h.
Explanation:
The question asks for the unit rate of 4543.08 km traveled in 52.4 hours, which is essentially asking for the average speed in kilometers per hour (km/h). To find this, you would divide the total distance traveled by the total time taken.
Mathematically, this is expressed as:
Distance (km) / Time (h) = Speed (km/h)Substituting the given values:
4543.08 km / 52.4 h = 86.70 km/hTherefore, the unit rate or average speed is 86.70 km/h. It's important to note that when calculating such problems, it's essential to maintain consistency in the units (in this case, km for distance and hours for time) to ensure the accuracy of your result.
If f(x) = 9 cos2(x), compute its differential df. df = (−18cos(x)sin(x))dx correct: your answer is correct. approximate the change in f when x changes from x = π 6 to x = π 6 + 0.1. (round your answer to three decimal places.) δf = .738 incorrect: your answer is incorrect. approximate the relative change in f as x undergoes this change. (round your answer to three decimal places.)
Answers
Given: f(x) = 9 cos (2x)
The differential equation is df = - 18 sin(2x) dx
When x contrasts from π/6 to π/6 + 01, then dx = 0.1.
The variation in f is δf = - 18 sin(π/3) *(0.1) = -1.5588 ≈ -1.559
The computation in the change in f directly:
f(π/6) = 9 cos(π/3) = 4.5
f(π/6 + 0.1) = 9 cos(π/3 + 0.2) = 2.6818
δf = 2.6818- 4.5 = -1.6382 ≈ -1.638
Direct computation of δf is near to the real value but in error.
The two outcomes will be closer as dx gets smaller.
Answer would be:
δf = -1.559 (correct answer)
δf = -1.638 (approximate answer)
Answer:
a
Step-by-step explanation:
To make 112 dozen muffins, a recipe uses 312 cups of flour.
How many cups of flour are needed for every dozen muffins made?
Answers
Ryan earned $376 by working for 4 days. If he earned the same amount each day, how much could he earn working 5 days?
Answers
Solve the system by elimination
2x+6y= -12
5x-5y= -10
Answers
1st equation has all multiples of '2'. Divide by 2
---> x +3y = -6
2nd equation has multiples of 5. Divide by 5.
---> x - y = 2
Now elimination part is easier.
Eliminate 'x' variable by subtracting 2nd equation from 1st.
x + 3y = -6
-(x - y = 2)
----------------------
4y = -8
Solve for 'y'
4y = -8
y = (-8)/4 = -2
Substitute value for 'y' back into 2nd equation:
x - (-2) = 2
x + 2 = 2
x = 0
Solution to system is:
x=0, y =-2
An aircraft travels with the wind for 120 miles in 0.75 of an hour. The return trip is flown against the wind and takes exactly 1 hour.
Which system of linear equations represents x, the speed of the plane in miles per hour, and y, the speed of the wind in miles per hour? Recall the formula d = rt.
Answers
Answer:
its A
Step-by-step explanation:
Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or approximately 5,880,000,000,000 miles. Suppose a star is 13.6 light-years from Earth. In scientific notation, how many miles away is it?
Answers
Answer:
The distance traveled in 13.6 light year is [tex]7.9968\times 10^{13}\text{ miles}[/tex]
Step-by-step explanation:
Given : Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or approximately 5,880,000,000,000 miles. Suppose a star is 13.6 light-years from Earth.
To find : In scientific notation, how many miles away is it?
Solution :
According to question,
The distance can travel in 1 light year is
[tex]1 \text{ light year} = 5,880,000,000,000 \text{ miles}[/tex]
We have to find the distance traveled in 13.6 light-years.
[tex]13.6 \text{ light year} =13.6\times 5,880,000,000,000 \text{ miles}[/tex]
[tex]13.6 \text{ light year} =79,968,000,000,000 \text{ miles}[/tex]
In scientific notation,
[tex]13.6 \text{ light year} =7.9968\times 10^{13}\text{ miles}[/tex]
Therefore, The distance traveled in 13.6 light year is [tex]7.9968\times 10^{13}\text{ miles}[/tex]
what is equivalent to the square root of -27
Answers
First, identify that 9 x 3 = 27. To after taking the square root, you will get 3√3 (Since the square root of 9 is 3 and there's no square root of 3, so leave it in the √)
However, since it is a negative number, you will have to include the letter i in the answer. i represents the imaginary part of it since you can't have a negative number in the square root.
So your answer will look like 3i√3.
The perimeter of a church window is 80 inches. If the window is in the shape of a square.what is the length of each side of the window?
Answers
The length of each side of the church window is 20 inches.
Explanation:To find the length of each side, we need to determine the perimeter of the square. The perimeter is the sum of all four sides of the square. In this case, it is given that the perimeter is 80 inches. Since all sides of a square are equal in length, we can divide the perimeter by 4 to find the length of each side. So, each side of the church window will be 80 inches divided by 4, which is 20 inches.
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Maryam had to sail 4 2⁄3 miles to reach her destination. At the end of the day, she had sailed 3 1⁄3 miles. How far was she from her destination?
Answers
subtract the distance she traveled from the total distance she has to go
4 2/3 - 3 1/3 = 1 1/3 miles to go
it takes Joaquin 1/3 hours to walk to the library 3/4 miles away what is his walking pace in miles per hour
Answers
20 minutes = 3/4 of a mile
60 minutes = 3 * 3/4 of a mile = 2.25 miles
A chicken soup recipe calls for
9
cups of chicken stock. How much is this in quarts?
Answers
9 / 4 = 2.25
If $16,400 is deposited into a CD paying 5.1% annually, how much will be in the account after 20 years? Enter your answer rounded to the nearest cent.
Answers
16,400 x (1 + 0.051)^20 =
16400 x (1.051)^20 =
16400 x 2.70429659 =
$44,350.46
if f(x)=-x+8 and g(x)= x^4 what is (g°f)(2)?
Answers
so, a way to do it is, get the value of the first one, then insert that output into the second.
[tex]\bf \begin{cases} f(x)=-x+8\\ g(x)=x^4\\ (g\circ f)(x)=g(~~f(x)~~) \end{cases} \\\\\\ (g\circ f)(2)=g(~~f(2)~~) \\\\\\ f(2)=-(2)+8\implies \boxed{f(2)=6} \\\\\\ g(~~f(2)~~)\implies g\left(~~\boxed{6}~~ \right)\implies g(6)=(6)^4\implies g(6)=1296[/tex]
What is y-10=9(x+8) written in standard form?
Answers
Answer:
-9x+y=82
Step-by-step explanation:
hope this helped!
The equation y-10=9(x+8) can be transformed into standard form by distributing, simplifying, and rearranging terms to get 9x - y = -82.
Explanation:The given equation is y-10=9(x+8), and we're asked to change this slope-intercept form into the standard form. First, we'll start by distributing the 9 to both x and 8 which will result in y-10 = 9x + 72. Then, we'll bring terms involving x and y to one side of the equation, leading to -9x + y = 82. This is almost in standard form, but typically we want the leading coefficient (the coefficient of x) to be positive, so we'll multiply the equation by -1. This gives us 9x - y = -82, which is the equation in standard form.
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How many lines can be drawn through points j and k?
Answers
Anyone know how to do B? Help please do!
Answers
Let’s establish first that our result is going to be negative. That’s a non-negotiable. Now, we can turn our attention to the 25/7. What is “one whole” when we’re dealing with sevenths? Well, splitting one whole thing into sevenths is the same as splitting it into 7 equal pieces, so in any one whole, we’ll have 7/7.
So, finding the *whole* part of 25/7 is the same thing as finding out how many *whole 7s* fit in 25. We can fit 3 whole 7s into 25, so our whole part is 3. Dividing 25 by 7 leaves us with *4/7* (since 7 x 3 = 21 and 25 - 21 = 4), so our fractional part is 4/7. Putting that together:
Adding back on the negative sign from the beginning, we find that our mixed number is [tex]-3 \frac{4}{7} [/tex].
help asap need answer
Answers
A theatre contains 441 seats and the ticket prices for a recent play were $60 for adults and $16 for children. If the total proceeds were $14,800 for a sold-out matinee, how many of each type of ticket were sold?
Answers
x+y=441
that implies y=441-x so
14,800=60x+16(441-x)
14,800=60x+16*441-16x
14,800-16*441=44x
7744=44x
x=176 kids and 441-176 adults
What radius of a circle is required to inscribe an equilateral triangle with an area of 35.074 in2 and an altitude of 7.794 in? (round to nearest tenth)
Answers
Answer:
[tex]r[/tex]≈[tex]5.2 in[/tex]
Step-by-step explanation:
It is given that a circle is required to inscribe an equilateral triangle with an area of [tex]35.074 in^2[/tex] and an altitude of [tex]7.794 in[/tex],
Also, we know that the centroid divides the altitude into 2:1 form, thus
[tex]r=\frac{2}{3}(h)[/tex]
Substituting the value of an altitude, we have
[tex]r=\frac{2}{3}(7.794)[/tex]
[tex]r=5.196 in[/tex]
[tex]r[/tex]≈[tex]5.2 in[/tex]
Therefore, the radius of the circle is [tex]5.2 inches[/tex].
find x when y= 14, if y=7 when x=8
Answers
Answer: The required value of x is 16.
Step-by-step explanation: Given that the value of y is 7 when the value of x is 8.
We are to find the value of x when y is 14.
The ratio of y to x is given by
[tex]y:x=7:8.[/tex]
Therefore, when y = 14, we must have
[tex]14:x=7:8\\\\\\\Rightarrow \dfrac{14}{x}=\dfrac{7}{8}\\\\\\\Rightarrow x=\dfrac{14\times8}{7}\\\\\Rightarrow x=16.[/tex]
Thus, the required value of x is 16.
Jimmy ran 3 miles west and then 4 miles north. How far is he from his starting point if he went in a straight line? (It makes a right triangle.)
Answers
the straight line would be 3^2 + 4^2 = X^2
9+16 = x^2
25 = x^2
x = sqrt(25)
x = 5
it is 5 miles
you are looking for the hypotenuse. 3^2+4^2=c^2. which simplifies to 25=c^2. So your final answer is 5 miles
What is the probability that two people have a birthday on the same day of the same month?
Answers
If 40% is equal to the fraction x/30, what is the value of X?
Answers
The value of x is 12 and this can be determined by using the arithmetic operations and the given data.
Given :
40% is equal to the fraction x/30.
The following steps can be used in order to determine the value of 'x':
Step 1 - The arithmetic operations can be used in order to determine the value of 'x'.
Step 2 - According to the given data, the 40% is equal to the fraction x/30.
Step 3 - So, the value of X is calculated as:
[tex]\dfrac{40}{100}=\dfrac{x}{30}[/tex]
Step 4 - Simplify the above expression.
x = 12
For more information, refer to the link given below:
https://brainly.com/question/25834626
HELPPPPPPPPP STATTTSSSSS
Answers
15. 17+6=23
16.10-6=4 and 17 -6=11, 11+4=15.
A plane is traveling at a speed of 400 miles per hour.How far will the plane travel in 5 hours?
Answers
Answer:
Step-by-step explanation: