Answer:
(i) 2² · 3 · 7
(ii) 3024
(iii) k = 16
(iv) 12 cm
Step-by-step explanation:
Part (i)The first few prime numbers are: 2, 3, 5, 7, 11, 13, 17, ...
To find which prime numbers multiply together to make 84, start by dividing 84 by the first prime number, 2:
⇒ 84 ÷ 2 = 42
As 42 is not a prime number, we need to divide again:
⇒ 42 ÷ 2 = 21
As 21 is not a prime number, we need to divide again.
21 is not divisible by 2, so let's try dividing by the next prime number, 3:
⇒ 21 ÷ 3 = 7
As 7 is a prime number, we can stop.
Therefore, 84 is the product of:
⇒ 84 = 2 · 2 · 3 · 7
As 2 appears two times, we can write this using exponents:
⇒ 84 = 2² · 3 · 7
Part (ii)Lowest Common Multiple (LCM): The lowest multiple shared by two or more numbers.
Prime Factors Method of finding LCM
Step 1
Find the prime factorization of each number.
From part (i): 84 = 2² · 3 · 7
Given in part (ii): 432 = 2⁴ · 3³
Step 2
Write each number as a product of primes, matching primes vertically where possible:
\(\begin{array}{ r c c c c c c c ccccccccc}84&=& 2 & \cdot & 2 & \cdot & & & & & 3& \cdot & & & && 7\\\\432 &=& 2 & \cdot & 2 &\cdot & 2& \cdot & 2& \cdot & 3& \cdot & 3& \cdot & 3\\\\\cline{1-17} \\\sf LCM & = & 2 & \cdot & 2 &\cdot & 2& \cdot & 2& \cdot & 3& \cdot & 3& \cdot & 3 &\cdot & 7\end{array}\)
Step 3
Bring down the primes in each column then multiply the factors to get the LCM:
⇒ LCM = 2 · 2 · 2 · 2 · 3 · 3 · 3 · 7
⇒ LCM = 2⁴ · 3³ · 7
⇒ LCM = 3024
Part (iii)From part (ii) we know that the prime factorization of 432 is:
432 = 2⁴ · 3³
A perfect cube is a number multiplied by itself three times.
One of the factors of 432 is a perfect cube → 3³.
Therefore,
\(\begin{aligned}432 & = 2^4 \cdot 3^3\\\\\implies \dfrac{432}{2^4} & = 3^3\\\\\dfrac{432}{16} & = 3^3\end{aligned}\)
So we need to divide 432 by 2⁴ to get the perfect cube 3³.
Therefore,
⇒ k = 2⁴
⇒ k = 2 · 2 · 2 · 2
⇒ k = 16
Part (iv)To find the largest possible length of the side of the square, we need to find the greatest common factor of 432 and 84.
Prime Factors Method of finding GCF
Step 1
Find the prime factorization of each number.
From part (i): 84 = 2² · 3 · 7
Given in part (ii): 432 = 2⁴ · 3³
Step 2
Write each number as a product of primes, matching primes vertically where possible:
\(\begin{array}{ r c c c c c c c ccccccccc}84&=& 2 & \cdot & 2 & \cdot & & & & & 3& \cdot & & & && 7\\\\432 &=& 2 & \cdot & 2 &\cdot & 2& \cdot & 2& \cdot & 3& \cdot & 3& \cdot & 3\\\\\cline{1-17} \\\sf GCF & = & 2 & \cdot & 2 & \cdot & & & & & 3& & & & && \end{array}\)
Step 3
Bring down the primes in the columns where both numbers have the factor, then multiply the factors to get the GCF:
⇒ GCF = 2 · 2 · 3
⇒ GCF = 12
Therefore, the largest possible length of the side of the square is 12 cm.
what’s the perimeter
Answer:
the answer is 10
Step-by-step explanation:
the other shape is half of all the degreed of the first one
Answer: 10
Step-by-step explanation:
AB: 3.0/2 = 1.5 = EF
BC: 5.0/2 = 2.5 = FG
CD: 4.0/2 = 2.0 = GH
DA: 8.0/2 = 4.0 = EH
1.5+2.5+2.0+4.0 = 10
a _______________ is a graph showing the differences in frequencies or percentages among categories of a nominal or an ordinal variable.
A bar chart is a graph that shows the differences in frequencies or percentages among categories of a nominal or an ordinal variable.
A bar chart is a commonly used graphical representation to display the distribution of data in different categories. It is particularly useful when working with nominal or ordinal variables, where the categories are distinct and unordered or have a specific order.
In a bar chart, each category is represented by a rectangular bar whose length corresponds to the frequency or percentage associated with that category. The height of the bar represents the magnitude or count of the variable in each category, allowing for easy visual comparison between the categories.
The bars in a bar chart can be arranged horizontally or vertically, depending on the preference or nature of the data. The chart may also include labels or annotations to indicate the category names or additional information.
By examining the lengths or heights of the bars in a bar chart, it becomes easy to identify the categories with the highest or lowest frequencies or percentages, as well as to compare the relative magnitudes among the different categories. This graphical representation aids in visualizing and interpreting the distribution of a nominal or an ordinal variable effectively.
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Find the volume of the cylinder.
Either enter an exact answer in terms of " or use 3.14 for T.
2
units3
Answer:
56.52
Step-by-step explanation:
pi×r²h
=3.14×3²2
=3.14×9×2
=3.14×18
= 56.52³
Which statements are correct about the table? Check all that apply.
Hours (h)
Dollars (d)
1
42
2
84
3
126
4
168
5
?
Multiply h by 42 to get d.
Multiply d by 42 to get h.
The missing value in the last row is 169.
The missing value in the last row is 210.
m
real world cituation that in
1000
H
Answer:
Add 42 to itself from h to get the corresponding answer at d
42+42=84
84+42=126
126+42=168
168+42=210
A case of soda costs $3.50 with tax. Mr. Gardner has $30 he can spend on soda for the Mountaineer Market. How many cases can he buy? cases of soda
Answer:
he can buy 8!
Step-by-step explanation:
Answer:
8
Step-by-step explanation:
I don't know if this is mathematically correct ways to solve this but here's how I did it: I divided 30 by 3.50 and got 8.57... so then I just mentally concluded that he can buy 8
any point on the perpendicular bisector of a segment is
It is correct to say that any point on the perpendicular bisector of a segment is equidistant from the endpoints of the segment.
Any point on the perpendicular bisector of a segment is equidistant from the endpoints of the segment. What is a perpendicular bisector? A perpendicular bisector is a line that intersects a line segment and forms a 90-degree angle. It divides the line segment into two equal halves.Each point on the perpendicular bisector of a line segment is equidistant from the endpoints of the segment. This means that the distance from any point on the line to one endpoint of the segment is the same as the distance to the other endpoint of the segment.
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Which one?
A. B. C. or D?
Answer: C
brainliest plz? ty!!
Answer:
C ez
Step-by-step explanation:
Write the transformation matrix and the resultant matrix that will translate the triangle, (-2, 4), given the triangles vertices are at A(-1, 3), B(0, -4) and C(3, 3).
The new vertices of the triangle after the translation are A'(-3, 7), B(-2, 0), and C(1, 7), which form the resultant matrix:
|-3 -2 1 |
| 7 0 7 |
| 1 1 1 |
Define translationIn mathematics, a translation refers to a geometric transformation that moves every point in a figure or a space by the same distance in a given direction. In other words, it involves sliding a figure or a point to a new location without changing its size, shape, or orientation.
To translate the triangle by a vector (x, y), we use the following transformation matrix:
|1 0 x|
|0 1 y|
|0 0 1|
For the given triangle with vertices at A(-1, 3), B(0, -4), and C(3, 3), let's assume we want to translate it by a vector (−2, 4). Then the transformation matrix for translation is:
|1 0 -2|
|0 1 4 |
|0 0 1 |
To apply this transformation matrix to each vertex of the triangle, we represent the vertices as column vectors and multiply them by the matrix:
| -1 | | 1 0 -2 | | -3 |
| 3 | -> | 0 1 4 | = | 7 |
| 1 | | 0 0 1 | | 1 |
| 0 | | 1 0 -2 | | -2 |
| -4 | -> | 0 1 4 | = | 0 |
| 1 | | 0 0 1 | | 1 |
| 3 | | 1 0 -2 | | 1 |
| 3 | -> | 0 1 4 | = | 7 |
| 1 | | 0 0 1 | | 1 |
So, the new vertices of the triangle after the translation are A'(-3, 7), B(-2, 0), and C(1, 7), which form the resultant matrix:
|-3 -2 1 |
| 7 0 7 |
| 1 1 1 |
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A 2-column table with 6 rows. The first column is labeled x with entries negative 4, negative 3, negative 2, negative 1, 0, 1. The second column is labeled f of x with entries negative 10, 0, 0, negative 4, negative 6, 0. Which is a y-intercept of the continuous function in the table? Group of answer choices (0, –6) (–2, 0) (–6, 0) (0, –2)
A y-intercept of the continuous function in the table is; (0, –6)
What is the y-intercept of the given function table?The y-intercept of a function is defined as the point where the graph intersects the y-axis. This means the point where the x-value is zero.
Now, from the function table given, we can see the coordinates of the function are given as;
(-4, 10)
(-3, 0)
(-2, 0)
(-1, -4)
(0, -6)
(1, 0)
Now, from the coordinates above , we can see that the only coordinate that has the x-value as zero is the one (0, -6) and as such by definition, it is the y-intercept.
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a manufacturer produces gears for use in an engine's transmission that have a mean diameter of 10.00 mm and a standard deviation of 0.05 mm. the lengths of these diameters have a normal distribution. what is the diameter that separates the smallest 14% of diameters from the rest?
The diameter that separates the smallest 14% of diameters from the rest is approximately 9.946 mm.
In a normal distribution, approximately 68% of the data falls within one standard deviation of the mean, about 95% within two standard deviations, and approximately 99.7% within three standard deviations. Since we want to find the diameter that separates the smallest 14% of diameters from the rest, we need to determine the value that corresponds to this cutoff point.
To calculate this, we'll use a statistical concept called the z-score. The z-score measures the number of standard deviations a particular value is from the mean. It can be calculated using the formula:
z = (x - μ) / σ
where:
z is the z-score
x is the value we want to find (diameter in this case)
μ is the mean diameter (10.00 mm)
σ is the standard deviation (0.05 mm)
To find the diameter that separates the smallest 14% of diameters, we need to find the z-score corresponding to the 14th percentile. Since the normal distribution is symmetric, the cutoff point will be a negative z-score.
Plugging in the values, we have:
x = (-1.0803) * 0.05 + 10.00
Calculating this expression, we find:
x ≈ 9.946 mm
Therefore, the diameter that separates the smallest 14% of diameters from the rest is approximately 9.946 mm.
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This is for now I need help pls !!!!!!!
Will mark brainliest
19
Answer:
p = 6
Step-by-step explanation:
All you have to do is use distributive property of the left side. Then, add like terms until you get p on one side and a constant on the other. Then just divide both sides by the number that is with the p. In the end you will reach the p = 6 answer.
PLEASE HELP ME =(((((((((((((((((((((((
Answer:
The answer is
\(y = - 5x - 2\)
Step-by-step explanation:
❃Incase you forgot what the linear equation formula is ☟
\(y = mx + b\)
❃Incase you also forgot, The is what the slope formula is ☟
\(m = \frac{y_2 - y_1 }{x_2 - x_1}\)
➊ First: We are going to be solving for the slope.
\(m = \frac{ - 2 - 3}{0 - ( - 1)} = \frac{ - 5}{ \: \: \: 1} = - 5\)
➋Second: We find the y-intercept.
\(y = mx + b \\ 3 = - 5( - 1) + b \\ 3 = 5 + b \\ \frac{ - 5 = - 5 \ \ \: \: \: \: \: \: }{ - 2 = b}\)
➌Third: Plug in.
\(y = - 5x - 2\)
Giselle bought a dress for $35 and three t-shirts. She used a coupon for $2. 50 off each t-shirt. The total cost can be modeled by the expression 35 + 3(n - 2. 5). What does n - 2. 5 represent?
n - 2.5 represent the Cost Price after a discount of 2.50
Given parameters,
Modeling of the total cost = 35 + 3(n - 2.5)
The general format of models like this is as follows;
Price + quantity (cost after coupon)
Coupon literally is a code that are used to obtain a discount on the current purchase
By comparison;
Price = 35 (i.e. current dress price).
Quantity = n (i.e. the number of shirts bought)
Lastly, cost after coupon = n - 2.5
It is stated that she applies a coupon on each T shirt
This can be interpreted to: removing a total discount of $2.50 from the three t-shirt.
By removing, the expression is given as negative $2.5
Hence,
n - 2.5 represent the total cost on each T shirt after coupon is applied
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Is the calculation for the question: Write an expression for the calculation. Double the number 6 and then subtract 36 divided by 12. Is the answer 6 x 2 - 36 ÷ 12?
Answer:
Yes
Step-by-step explanation:
Yes the answer is 6 x 2 - 36 ÷ 12 and it is correct. Although you could change this arithmetic expression by adding parenthesis to make it easier to read and know which operations come first, like so...
(6 x 2) - (36 ÷ 12)
This would make it easier to see that the 6x2 must be done first and then the 36/12 before doing the subtraction.
Which of the following is not the same as negative 18?
the opposite of the opposite of -18
-(-18)
-18
the opposite of 18
The value of the expression - (- 18) is not the same as negative 18.
What are algebraic sign conventions?When two equal or dissimilar signs are used in an operation, the law or sign rule specifies which sign wins.
Addition and subtraction sign rules
A positive sign will be included in the outcome when two positive integers are added. 3 + 5 = 8
The outcome will bear the sign of the larger number when two numbers with opposite signs—one positive and the other negative—are added or subtracted. 5 - 6 = - 1
The outcome will bear the sign of the larger number when two numbers with opposite signs—one negative and the other positive—are added or subtracted. - 7 + 4 = - 3
By subtracting two negative integers, the outcome will also be negative.
- 5 - 4 = - 9
For the expression - (- 18) using the sign conventions.
Negative time negative becomes a positive.
That is, - (- 18) = + 18.
Hence, the value of the expression - (- 18) is not the same as negative 18.
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a manufacturer of potato chips would like to know whether its bag filling machine works correctly at the 411.0 gram setting. it is believed that the machine is underfilling the bags. a 35 bag sample had a mean of 406.0 grams. a level of significance of 0.05 will be used. state the hypotheses. assume the standard deviation is known to be 25.0.
Using a 35-bag sample with a mean of 406.0 grams, a known standard deviation of 25.0 grams, and a level of significance of 0.05, you can perform a one-tailed Z-test to determine whether to reject or fail to reject the null hypothesis.
To test if the potato chip manufacturer's bag filling machine is working correctly at the 411.0-gram setting, we will state the hypotheses using the given terms.
Null Hypothesis (H0): The machine fills bags correctly, with a mean weight of 411.0 grams (µ = 411.0 grams)
Alternative Hypothesis (H1): The machine is underfilling bags, with a mean weight less than 411.0 grams (µ < 411.0 grams)
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THIS IS URGENT
Simplify 5^3/4 divided by 5^5/9 by substituting a numerical value for a in the expression.
5^a
Answer:
a=7/36...............
I WILL MARK BRAINIEST
please answer question 8
Answer:
c
Step-by-step explanation:
because it just moves to the right by 7 units. it does not change in shape or size, only location.
Answer:
C an equilateral triangle of exactly the same size
Jackrabbits are capable of reaching speeds up to 40 miles per hour. How fast is this in feet per second? (Round to the nearest whole number.)
A vector is in standard position, with its terminal point in the second quadrant and an x-coordinate of –5. The vector has a magnitude of StartRoot 61 EndRoot.Complete the statements describing the vector. The y-coordinate of the vector to the nearest tenth is . The direction angle to the nearest whole number is °.
a.
The y-coordinate of the vector with its terminal point in the second quadrant is 6.
The magnitude of the vector, r = √(x² + y²) where x = x-coorcinate of vector = -5 and y = y-coordinate of vector.
Since r = √61 and r = √(x² + y²)
Making y subject of the formula, we have
y = √(r² - x²)
Substituting the values of the variables into the equation, we have
y = √((√61)² - (-5)²)
y = √(61 - 25)
y = ±√36
y = ±6
Since r is in the second quadrant, its y-coordinate is positive.
So, y = 6
So, the y-coordinate of the vector with its terminal point in the second quadrant is 6.
b.
The direction angle of the vector with its terminal point in the second quadrant is 130°
The direction angle of the vector is gotten from tanФ = y/x
Subsstituting x and y into the equation, we have
tanФ = y/x
tanФ = 6/-5
tanФ = -1.2
tan(180° - Ф) = 1.2
Taking inverse tan of both sides, we have
180° - Ф = tan⁻¹(1.2)
180° - Ф = 50.2°
Ф = 180° - 50.2°
Ф = 129.8°
Ф ≅ 130° to the neares whole number
The direction angle of the vector with its terminal point in the second quadrant is 130°.
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Answer:
first one is 6.0 and the second is 130
Step-by-step explanation:
what is 3 times piy time 53 divided by 72
Answer:
6.93768377668
Step-by-step explanation:
confusion
A performer expects to sell 5000 tickets for an upcoming concert. They plan to make a total of 311000 in sales from these tickets. Assume that all tickets have the same price. How much money will they make if they sell 7000 tickets?
how many solutions are there to square root x =9
Answer:
There are 2 solutions to square root x = 9
They are 3, and -3
Step-by-step explanation:
The square root of x=9 has 2 solutions,
The square root means, for a given number, (in our case 9) what number times itself equals the given number,
Or, squaring (i.e multiplying with itself) what number would give the given number,
so, we have to find the solutions to \(\sqrt{9}\)
since we know that,
\((3)(3) = 9\\and,\\(-3)(-3) = 9\)
hence if we square either 3 or -3, we get 9
Hence the solutions are 3, and -3
Find the accumulated present value of a 9-year $160,000 continuous income stream that has been compounded continuously at 3.1%. Round to the nearest dollar.
Find the accumulated future value of a 15-year $100,000 continuous income stream that has been compounded continuously at 4.6%. Round to the nearest dollar.
Find the accumulated future value of a 19-year $130,000 continuous income stream that has been compounded continuously at 3.8%. Round to the nearest dollar.
To calculate the accumulated present value and future value of continuous income streams, we can use the continuous compounding formula:
Accumulated Present Value = Principal * e^(rate * time)
Accumulated Future Value = Principal * e^(rate * time)
Where:
Principal: The initial amount or size of the income stream
Rate: The continuous interest rate (expressed as a decimal)
Time: The duration of the income stream in years
e: The mathematical constant approximately equal to 2.71828
For the 9-year $160,000 continuous income stream compounded continuously at 3.1%:
Accumulated Present Value = $160,000 * e^(0.031 * 9) ≈ $117,488
For the 15-year $100,000 continuous income stream compounded continuously at 4.6%:
Accumulated Future Value = $100,000 * e^(0.046 * 15) ≈ $215,165
For the 19-year $130,000 continuous income stream compounded continuously at 3.8%:
Accumulated Future Value = $130,000 * e^(0.038 * 19) ≈ $253,813
Using the continuous compounding formula, we have calculated the accumulated present value and future value for the given continuous income streams. The accumulated present value and future value provide estimates of the total value of the income streams after the specified durations, considering continuous compounding at the given interest rates
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URGENT PLEASE ANSWER THESE QUESTIONS
a) The fire is out of the reach of helicopter 1.
b) Only helicopter 3 can be sent to stop the fire.
What helicopter does stop the fire?
We have both the location of the fire and the initial position of the three helicopters set on a Cartesian plane. The locations are listed below:
Fire - (x, y) = (- 3, - 5)Helicopter 1 - (x, y) = (1, 4)Helicopter 2 - (x, y) = (- 2, 3)Helicopter 3 - (x, y) = (4, - 2)The distance is found by the straight line distance formula, an application of Pythagorean theorem:
a) \(d = \sqrt{[1 - (- 3)]^{2}+[4-(-5)]^{2}}\)
\(d = \sqrt{4^{2}+9^{2}}\)
\(d = \sqrt{97}\)
d ≈ 9.849
The fire is out of the reach of helicopter 1.
b) Helicopter 2
\(d = \sqrt{[- 2 - (- 3)]^{2}+[3 - (- 5)]^{2}}\)
\(d = \sqrt{1^{2}+8^{2}}\)
\(d = \sqrt{65}\)
d ≈ 8.062
Helicopter 3
\(d = \sqrt{[4 - (- 3)]^{2}+ [- 2 - (-5)]^{2}}\)
\(d = \sqrt{7^{2}+3^{2}}\)
\(d = \sqrt{58}\)
d ≈ 7.616
Only helicopter 3 can be sent to stop the fire.
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NEED HELP IMMEDIATELY!
Simplify 10√2y + 5√2y + 3√2y.
A. 18√6y
B. 18√2y
C. 12√2y
D. 18√6y^3
(ANSWER IS NOT A)
18 root
2
Step-by-step explanation:
In this question imagine there is no y
It will be 10 root2 +5 root2 +3 root 2 it will be 18 root 2
write the recursive rule for the sequence shown in each table.
position, n 1 2 3 4 5
term, f(n) 5 18 31 44 57
1 2 3 4 5 6 7
65 54 43 32 21 10 -1
1 2 3 4 5 6 7
-9 6 21 36 51 66 81
1 2 3 4 5 6 7 8
17 13 9 5 1 -3 -7 -11
The recursive rule for the sequence given is aₙ = aₙ₋₁ + 13.
Given that, a sequence,
position, n = 1 2 3 4 5
term, f(n) = 5 18 31 44 57
We need to write the recursive rule for the sequence,
So,
a₁ = 5, a₂ = 18
18-5 = 13
a₃ = 31, a₄ = 44
44-31 = 13
Therefore,
We see that, the preceding term is 13 less than the succeeding term,
We can write,
aₙ = aₙ₋₁ + 13
Hence, the recursive rule for the sequence given is aₙ = aₙ₋₁ + 13.
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40% is nearly half of the days in the workweek! Why was Dilbert's boss wrong to use this number to think that the employees were cheating
Dilbert's boss was wrong to use the number 40% to assume that the employees were cheating because it only represents a percentage and not the actual number of days that the employees were absent.
In reality, if the workweek is 5 days, then 40% would only be 2 days. Therefore, assuming that the employees were cheating based on this percentage alone is not a fair or accurate assessment. It's important to consider the actual number of days missed by each employee and investigate the reasons for their absence before jumping to conclusions.
While 40% might seem like nearly half of the days in a workweek, it doesn't necessarily imply that employees are cheating. To make a fair assessment, one should consider other factors such as workload, productivity, and employee performance, rather than solely focusing on a percentage.
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What is the longest side of the triangle with vertices of (1,4), (3,4), and (3,6)?