Answer:
6
Step-by-step explanation:
3/4 = 6/8
Fritz can build a bookcase in 8 hours and Holly can build the same bookcase in 10 hours. After working together for 3 hours, Fritz leaves how long will it take holly to finish the bookcase by herself?
Holy will take 13/5 or 2.6 hours to finish the bookcase.
What is relation between time and work?The relation between time and work is
Work Done = Time Taken × Rate of Work ·
or, Rate of Work = 1 / Time Taken ·
or, Time Taken = 1 / Rate of Work ·
Now it is given that,
Time taken by Fritz to build a bookcase = 8 hours
So, Bookcase build by Fritz in 1 hour = 1/8
Similarly,
Time taken by Holly to build a bookcase = 10 hours
So, Bookcase build by Holly in 1 hour = 1/10
So, bookcase build in 3 hours
Fritz = 3/8
Holly = 3/10
Total bookcase build in 3 hours = 3/8 + 3/10 = 27/40
So. remaining work = 1 - 27/40 = 13/40
Thus, Time taken by Fritz to complete the bookcase = 8 * (13/40) hours
= 13/5 or 2.6 hours
Thus, Holy will take 13/5 or 2.6 hours to finish the bookcase.
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What is the solution to 0.4x - 4 < 2.4?
Answer:
x=16
Step-by-step explanation:
Simplifying
0.4x + -4 = 2.4
Reorder the terms:
-4 + 0.4x = 2.4
Solving
-4 + 0.4x = 2.4
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '4' to each side of the equation.
-4 + 4 + 0.4x = 2.4 + 4
Combine like terms: -4 + 4 = 0
0 + 0.4x = 2.4 + 4
0.4x = 2.4 + 4
Combine like terms: 2.4 + 4 = 6.4
0.4x = 6.4
Divide each side by '0.4'.
x = 16
Simplifying
x = 16
Find the slope of a line parallel to each given line
Find the total surface area of this cylinder. Give your answer to one decimal place first correct answer will get brainliest and 5 stars!!!
Answer:
The surface area formula is 2πr (h + r) where r and h are the radius and height respectively. Since π = 3.14, r = 7, h = 15 the answer is:
2 * 3.14 * 7 * (15 + 7) = 43.96 * 22 = 967.6
What is the forecast for May using a five-month moving average?(Round answer to the nearest whole number.) Nov. 39 Dec. 27 Jan. 40 Feb. 42 Mar. 41 April 47
A. 43 B. 47 C. 52 D. 38 E. 39
The forecast for May using a five-month moving average is 39 (Option E).
Moving average is used for smoothing out time series data to find any trends or cycles within the data. A five-month moving average is the average of the past five months. To calculate the moving average, add up the sales for the previous five months and divide it by five.
According to the question, the sales for the previous five months are: Nov. 39 Dec. 27 Jan. 40 Feb. 42 Mar. 41 April 47
We have to add the sales of these five months, which gives:
27 + 40 + 42 + 41 + 47 = 197
To find the moving average for May, we divide this sum by 5:
197 / 5 = 39.4
Since we have to round the answer to the nearest whole number, we round 39.4 to 39, which is option E.
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In 1995, an earthquake in Mexico registered 8. 0 on the Richter scale. In 2001, an earthquake of magnitude 6. 8 shook Washington state. Approximately how many times more intense was the 1995 earthquake than the 2001 earthquake? Use the Formula, log 11 = M1 - M2
The earthquake in Mexico was approximately 15.85 (10^1.2) times more intense than the earthquake in Washington State, in terms of the energy released. This can be written as:15.85 times more intense. Thus, the answer is 15.85.
The formula for log is log 11 = M1 - M2Here,M1 = magnitude of earthquake 1M2 = magnitude of earthquake 2Given, an earthquake in Mexico in 1995 had a magnitude of 8.0 and an earthquake in Washington in 2001 had a magnitude of 6.8.We have to find how many times more intense the earthquake in Mexico was than that of Washington.So, we can use the formula as:log (11) = M1 - M2log (11) = 8 - 6.8log (11) = 1.2We know that if the difference in magnitude of earthquakes is 1, the energy released by them would be different by a factor of 10.So, if the difference in magnitude is 1.2, then the energy released by them would be different by a factor of 10^1.2.
Therefore, the earthquake in Mexico was approximately 15.85 (10^1.2) times more intense than the earthquake in Washington State, in terms of the energy released. This can be written as:15.85 times more intense. Thus, the answer is 15.85.
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awnser these if u want there from google
Answer:
4. 6.6
1. 9043
2. 0.52
Step-by-step explanation:
3+2.24+1.36=6.6
10000-957
1.3-0.78
Write the prime factorization of 21. Use exponents when appropriate and order the factors from least to greatest (for example, 2235).
The prime factorization of the number 21 is:
21 = 3*7
How to write the prime factorization?We want to write the prime factorization of 21.
To do so, we just need to divide the number by prime numbers.
The first prime number we can try is 2, if we divide by 2 we get:
21/2 = 10.5
This is not an integer, so 2 is not a factor.
The next one is 3:
21/3 = 7
Now we can rewrite:
21 = 3*7
Where 3 and 7 are prime numbers, so that is the prime factorization.
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consider a standard normal random variable z. what is the value of z if the area to the right of z is 0.4404?
The value of z if the area to the right of z is 0.4404 is; 0.15
How to find the probability of the z-score?To find the value of z if the area to the right of z is 0.4404 is expressed as; P(Z > z) = 0.4404
Now, this means we have to go and trace the value of this area on the standard normal distribution table to know that z-score that it represents.
Now, by looking at the table of standard normal distribution, we can trace that the z-score area to the right of z is 0.4404 is;
z = 0.15
Thus, we conclude that the z-score above is the required one for the given area.
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3.) Find the measure of the missing angle X:
Xº
120°
70°
Answer:
x=50
Step-by-step explanation:
Let's look at the red angle. if a flat line makes the angle 180, and the outer angle is 120, subtract 120 from 180. This will give you 60. Now every angle of a triangle added together will give you the sum of 180. So you already have 60 and 70, which make 130 all together. Subract 130 from 180 - (180-130) - and you'll get the result of 50.
The solution is : the measure of the missing angle X is x=50.
What is an angle?In Plane Geometry, a figure which is formed by two rays or lines that shares a common endpoint is called an angle. The two rays are called the sides of an angle, and the common endpoint is called the vertex.
here, we have,
from the given diagram, we get,
Let's look at the red angle.
if a flat line makes the angle 180, and the outer angle is 120,
subtract 120 from 180.
This will give you 60.
Now every angle of a triangle added together will give you the sum of 180.
So you already have 60 and 70,
which make 130 all together.
Subtract 130 from 180
i.e. (180-130) = 50
and we get the result of 50.
Hence, The solution is : the measure of the missing angle X is x=50.
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01
3
In 2007 the population of the world was 6 000 000 000
A study found that 4.5% of the population had severe water shortage.
Calculate how many people had severe water shortage.
Give your answer in standard form.
Number of people (in standard form) =
[3 marks]
The number of people who had severe water shortage in standard form is 2.7 × 10⁸.
What is Percentage?Percentage, denoted by the symbol '%', is defined as the parts of a number per fraction of 100. We have to divide a number with it's whole and then multiply with 100 to calculate the percentage of any number.
So the percentage actually means a part per 100.
Given,
Population of the world in 2007 = 6 000 000 000 = 6 × 10⁹ = 6 billion
Percentage of people who had severe water shortage = 4.5%
Number of people who had severe water shortage = 4.5% × 6 billion
= (4.5/100) × 6 billion
= 0.045 × 6 × 10⁹
= 0.27 × 10⁹
= 2.7 × 10⁸
Hence the people who had severe water shortage is 2.7 × 10⁸.
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prove that 9^3/2 -3 *5^0 -(1/81)^-1/2 = 15
Pls help, correct answer, I’ll mark as brainliest
Answer:
\(9^{3/2}-3\times 5^0-(\dfrac{1}{81})^{-1/2}=15\)
Step-by-step explanation:
The given expression is :
\(9^{3/2}-3\times 5^0-(\dfrac{1}{81})^{-1/2}=15\)
We need to prove that LHS is equal to RHS.
Taking LHS,
\(=9^{3/2}-3\times 5^0-(\dfrac{1}{81})^{-1/2}\)
\(=(3)^{2\times\dfrac{3}{2}}-3-(\dfrac{1}{9})^{2\times \dfrac{-1}{2}}\\\\=27-3-9\\\\=15\\\\=RHS\)
Hence, LHS = RHS.
If one side of a triangle is 87 and the other side is 52, what is the measurement of the other side?
Answer:
87+52=139 180-139 = 41
41 is the measurement of the other side
Step-by-step explanation:
Determine the percent of change----100 acres to 140 acres
Answer:
40
Step-by-step explanation:
We're going from 100 to 140 acres. So the change is 140 - 100 = 40.
Which sum represents the partial fraction decomposition of startfraction 8 x superscript 4 baseline + 3 x cubed minus 115 x squared minus 39 x + 200 over 3 x (x squared minus 10) squared endfraction?.
The given fraction can be rewritten as the sum of three smaller fractions. The first small fraction has a numerator of "8x² + 115" and a denominator of "3(x² - 10)". The second small fraction has a numerator of "3x^2 + 39" and a denominator of "3x(x² - 10)". The third small fraction has a numerator of "200" and a denominator of "3x(x² - 10)".
The given fraction can be rewritten as the sum of three smaller fractions.
The first small fraction is made up of a numerator that consists of the expression,
= 8x² + 115
divided by a denominator that consists of the expression,
= 3(x² - 10)
The second small fraction has a numerator of
= 3x² + 39
and a denominator of "3x(x² - 10)".
The third small fraction has a numerator of "200" and a denominator of = 3x(x² - 10)
When these three small fractions are added together, they equal the original fraction.
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We have four options for investing. The amount to be invested is $250,000. The four options are cash (Xc), bonds (Xb), stocks (Xs) or options (X6). Cash has a projected return of 1%, bonds 3%, stocks 10% and options 20%. A minimum of 20% of the total should be held in cash. Options cannot exceed stocks and bonds combined. Stocks should
be more than bonds.
Which of the following constraints ensures that options cannot exceed cash and stocks combined?
1) Xc <= Xo + Xs
2) Xo <= Xc+ Xs
3) Xc >= Xo + Xs
4) Xo >= Xc + Xs
The constraint that ensures options (Xo) cannot exceed cash (Xc) and stocks (Xs) combined is Xo <= Xc + Xs. The correct option is (2).
This constraint states that the amount invested in options (Xo) should be less than or equal to the sum of the amounts invested in cash (Xc) and stocks (Xs).
This ensures that the investment in options does not exceed the combined investment in cash and stocks.
Options are subject to this constraint because the problem statement specifies that options cannot exceed stocks and bonds combined.
By including cash in the constraint, it ensures that options are limited to the remaining amount after accounting for cash and stocks.
To summarize, the constraint Xo <= Xc + Xs ensures that options cannot exceed the combined investment in cash and stocks.
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5.676677666777 is a rational number because it is a decimal that goes on forever with a pattern is he correct?
Answer:
No, he is incorrect because a pattern is not a repeating decimal.
x^3=x^2-1 find all the real zeros
Answer:
ask this braslate which matirias
Two circles intersect at A and B. A common external tangent is tangent to the circles at T and U, as shown. Let M be the intersection of line AB and TU. If AB = 9 and BM = 3, find TU.
Two circles intersect at points A and B and have a common external tangent that is tangent to the circles at points T and U, M be the intersection of line AB and TU. If AB = 9 and BM = 3, then TU will be equal to 9.6.
In order to find the length of TU, We can use the Pythagorean theorem to find the length of TU. We know that AB = 9, and BM = 3, so the length of AM must be 6. We can then use the Pythagorean theorem to solve for TU:
TU = √(62 + 92) = √93 = 9.6.
Therefore, the length of TU is 9.6.
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Add 1/3 and 1/4 and work out 2/5 of 8
Adding 1/3 and 1/4 gives 7/12, and working out 2/5 of 8 gives 3.2. These calculations involve basic fraction arithmetic
To add 1/3 and 1/4, we need to find a common denominator. The least common multiple of 3 and 4 is 12, so we can rewrite 1/3 as 4/12 and 1/4 as 3/12. Then, adding these fractions gives:
1/3 + 1/4 = 4/12 + 3/12 = 7/12
So, 1/3 plus 1/4 equals 7/12.
To work out 2/5 of 8, we can multiply 8 by 2/5. Multiplying a fraction by a whole number is the same as dividing the whole number by the denominator of the fraction and then multiplying by the numerator. So, we have:
2/5 of 8 = 8 x 2/5 = (8 ÷ 5) x 2 = 1.6 x 2 = 3.2
Therefore, 2/5 of 8 is equal to 3.2.
In summary, adding 1/3 and 1/4 gives 7/12, and working out 2/5 of 8 gives 3.2. These calculations involve basic fraction arithmetic and can be useful in many situations, such as calculating proportions, proportions of mixtures, or determining the outcome of certain probability experiments.
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Pls explain and will mark as brainliest
Answer: x = -5
Step-by-step explanation: The green x's represent positive x's, the yellow 1s represent positive numbers, and the red 1s represent negative numbers. So if you count everything your equation should look like 5x + 4 = -21. First you want to do the opposite of the plus 4, which is subtracting 4. That way the x is by itself on the left side of the equal sign. But what you do to one side you have to do to the other. So then you subtract 4 from -21. But because 21 is already negative it would equal -25. Now your equation should look like 5x = -25. Just divide by 5 for both sides and your x equals -5.
What number can be substituted for y to make the statement? 2/5 x 7/8 = 7/8 x Y true?
Answer:
2/5
Step-by-step explanation:
2/5 x 7/8 = 7/8 x 2/5
14/40 = 14/40
Helping in the name of Jesus.
What is 1,009,748,000 x 1,000
Answer:
1.009748e+12
Step-by-step explanation:
-5-(-2) please help
A -30
B30
C-1
D1
Answer:
Step-by-step explanation:
-3
Answer:
b
Step-by-step explanation:
when I muiltply an and divide. if there are two negatives it makes a positive an if there jus one it's a negative
Please draw this: points a(2,3) and b(2,-3), c and d are collinear, but a,b,c,d, and f are not.
Here is a diagram of the points described:
(2,3) (2, -3)
| |
| |
c----------d
Based on the given points, let's consider the following:
Point A: A (2, 3)
Point B: B (2, -3)
Points A and B have the same x-coordinate, indicating that they lie on a vertical line. The y-coordinate of A is greater than the y-coordinate of B, suggesting that A is located above B on the y-axis.
Now, you mentioned that points C and D are collinear. Collinear points lie on the same line. Assuming that points C and D lie on the same vertical line as A and B, but at different positions.
The points A (2,3) and B (2, -3) are collinear, but the points A, B, C, D, and F are not. This is because the points A and B have the same x-coordinate, so they lie on the same vertical line. The points C and D also have the same x-coordinate, so they lie on the same vertical line. However, the point F does not have the same x-coordinate as any of the other points, so it does not lie on the same vertical line as any of them.
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describe fully the single transformation that maps A onto c
Answer:
They are different because they are not similar and they have different answer at the end
f(x)=-x^2-14 find f(9)
Answer:
Step-by-step explanation:
f(x) = -x² - 14
f(9) = -9² -14 = -81-14 = -95
A local restaurant advertises that the mode cost of their most popular meals is $8. If the costs of their most popular meals are $7, $8, $8, $15, $15, $16, $17, $18, and $20, which word or phrase best describes this kind of advertising?
accurate
inaccurate
inaccurate and misleading
accurate, but misleading
The word or phrase no which best describes this kind of advertising is inaccurate.
The correct answer option is option B
What is mode?Mode refers to a statistical data which occurs most in a given set of data.
Advertisement can be defined as a commercial solicitation by a producer to the public in order to buy his product.
Given data:
$7, $8, $8, $15, $15, $16, $17, $18, and $20
$8 appeared twice$15 appeared twiceHence, it can be said that the mode of the most popular meals is not $8
Therefore, using $8 as a kind of advertisement for the mode of most popular meals is inaccurate
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Determine whether or not the function is one-to-one, and if it is, determine its inverse function
Determine the conditions for when a function has an inverse. Use the horizontal line test to recognize when a function is one-to-one. Find the inverse of a given function.
What is a horizontal line test?It is simple to establish whether the inverse of a function is also a function using the horizontal line test.
Because it fails the vertical line test, a function's inverse might not actually be a function.
Graph of the line
f\left( x \right) = - x + 2
f(x)=−x+2.
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At the beginning of the month, Rachel's Used Car Dealership had 80 cars on
the lot. Today, there are 100 cars on thelot. What is the percent change in the
number of cars on the lot this month?"
Answer:
25%
Step-by-step explanation: