The actual length, if the length of the model is 10 ft and the scale factor is greater than one is Option(b) 9.5 ft.
What is Scale-Factor?Any geometric figure or object's size can be changed with respect to its original size by applying a scale factor, which is a numerical value. It is used to find the length, area, or volume that is missing from an enlarged or reduced figure as well as to draw the enlarged or reduced shape of any given figure.If the original figure's dimensions and the dilated (increased or lowered) figure's dimensions are known, the scale factor can be determined.The image is magnified if the scaling factor (k > 1) is greater than 1.The image is shrunk if the scale factor is less than 1 (0 < k <1).The image doesn't change if the scaling factor is 1 (k = 1).There cannot be a zero scale factor.The basic formula to find the scale factor of a figure is as:
Scale factor = Dimensions of the new shape ÷ Dimensions of the original shape.
Given:
length of the model = 10 ft
Now we determine which actual length has a scale factor greater than one.
(a) Scale factor = (10/10)
Here, we can see that the scale factor is equal to 1.
(b) Scale factor = (10/9.5) = 1.05
Here, we can see that the scale factor is greater than 1.
(c) Scale factor = (10/12) = 0.83 ( 1 yard = 3 foot)
Here, we can see that the scale factor is less than 1.
Therefore, the actual length is 9.5 ft.
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How many solutions does the equation have?
5(n–2)=5n–10
Answer:
Infinite solutions, regardless of the value of n.
Step-by-step explanation:
[tex]5\left(n-2\right)=5n-10\\5\left(n-2\right)\\5n-5\cdot \:2\\5n-10\\5n-10=5n-10\\5n - 10+10=5n-10 + 10\\5n = 5n\\5n-5n=5n-5n\\0=0\\\mathrm{\:for\:n = \infty,-\infty}[/tex]
Please help me I need help
The question is What is the slope of a line perpendicular to the line whose equation is 5x-2y= -10. Fully simplify your answer
Answer:
x=−2+2y/5
Step-by-step explanation:
Add 2y to both sides of the equation.5x=−10+2y
Divide each term in 5x=−10+2y by 5 and simplify.
Divide each term in 5x=−10+2y by 55x5=−105+2y5Simplify the left side
. Cancel the common factor of 5
Cancel the common factor.5x5=−105+2y5Divide x by1.x=−105+y5
Simplify the right side.
Divide
−10 by 5
Elemer travels 66 miles per hour for 10 hours .find the distance traveled in miles
Answer: 660 miles
Step-by-step explanation:
66 miles * 10 hours/1 hour =
66*10/1=
66*10=660 miles
I need help in those questions please
The other root of the given quadratic equation is a = ± 3/√2.
Given that, x=2 and x²+ax+12=0.
What are the roots of quadratic equations?The roots of a quadratic equation are the values of the variable that satisfy the equation. They are also known as the "solutions" or "zeros" of the quadratic equation.
Now, put x=2 in x²+ax+12=0 and find the value of a.
That is, 2²+2a+12=0
⇒4+12+2a=0
⇒16+2a=0
⇒2a=-16
⇒a=-8
So, the value of a is -8.
Put (0, 6) and (4, 6) in the function y=2x²+bx+c and find the value of b and c.
That is, 6=2(0)²+b(0)+c
⇒ c=6
6=2(4)²+b(4)+c
⇒ 6 = 32+4b+c
⇒ -26 = 4b + 6
⇒ 4b = -32
⇒ b = -8
So, the value of b is -8 and the value of c is 6.
Put x=a (root) in the equation 2x + x/a -9 = 0 and find the other root.
That is, 2a²+a/a -9 = 0
⇒ 2a² - 9 = 0
⇒ a²=9/2
⇒ a = ± 3/√2
Therefore, the other root of the given quadratic equation is a = ± 3/√2.
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order from smallest to greatest
urgent !
Solve p3 = −512.
pls help due in 1 hour
Answer:
-170 2/3
Step-by-step explanation:
Divide both sides by 3 to get p by itself
p = -512/3
Simplify
- 170 2/3
Answer:
p=−8
Step-by-step explanation:
Let's solve your equation step-by-step.
[tex] \rightarrow \sf \: p {}^{3} =−512[/tex]
Step 1: Take cube root.
[tex] \sf p={(−512) }^{ ( \frac{1}{3} )}[/tex]
[tex] \sf \: p=−8[/tex]
At the Olympic games, many events have several rounds of competition. One of these
events is the men's 100-meter backstroke.
The upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of
the 2012 Olympics. The lower dot plot shows the times of the same 8 swimmers, but in the
semifinal round.
Final round
Semifinal round
distribution.
56
56.5
The center of the semifinal round distribution is
distribution.
57
Time (seconds)
The variability in the semifinal round distribution is
V
57.5
v
58
the center of the final round
the variability in the final round.
The 100–meter backstroke swimming times of the 8 swimmers during the semifinal and the finals of the Olympic games gives;
First part;
The center of the semifinal round is approximately 57.3625
The variability in the semifinal round is 0.0998
Second part;
The center of the final round is approximately 57.0125
The variability in the final round is 0.3336
How can the center and variability of the data in the dot plot be found?The times of the swimmers in the semifinal round are;
56.7, 57.2, 57.3, 57.3, 57.4, 57.5, 57.7, 57.8
The central value is given by the mean of the data, is found as follows;
(56.7+57.2+57.3+57.3+57.4+57.5+57.7+57.8)/8 = 57.3625
The variability is given by the standard deviation which is found by the formula;
[tex] \sigma = \sqrt{ \frac{ x_{i} - \mu}{n} } [/tex]
Where;
[tex]x _{i} = the \: ith \: value[/tex]
[tex] \mu = the \: mean[/tex]
The standard deviation found using the given values above and an online tool is presented as follows;
[tex] \sigma = \sqrt{ \frac{ x_{i} - 57.3625}{8} \approx 0.316 } [/tex]
The variance ≈ √(0.316) ≈ 0.0998Second part;
In the final, we have the following values from the dot plot;
56, 56.6, 56.6, 57, 57.1, 57.2, 57.7, 57.9
From the above values, using an online calculator, the center, which is taken as the mean is 57.0125
The variance for the final, [tex] \sigma^2 [/tex] ≈ 0.3336
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Given f(x) = 2 cos x, find the exact value of f (pi/6) in simplest form with a rational
denominator.
Using trigonometric functions, the value of 2 cos x is equals to √3.
What are trigonometric functions?One of the six mathematical functions used to express the side ratios of right triangles, the trigonometric function includes the sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant (csc). The graphic shows these six trigonometric functions in respect to a right triangle.
Cos (π/6) = √3/2
So. f(x) = 2 cos x
⇒ f(x) = 2 cos(π/6)
⇒ f(x) = 2 × √3/2
f(x) = √3
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What is 45% of 315. I need work shown in explanation area
45% of 315 = 141.75
When you are using a % number convert it into a decimal ( 45% would be 0.45 or 55% would be 0.55 ). After you convert it into a decimal you can multiply it by the number ( Here it would be 315 )
0.45 x 315 = 141.75
Answer:
141.75
Step-by-step explanation:
To do this question, first, we can write 45% as 45/100.
Now, we have to multiply.
45/100x315
=141.75
Hope that helped!
:D
HELP Finding the initial amount and rate of change given a table for a linear function
The initial amount and rate of change given a table for a linear function are $332 and $22.5, respectively
How to find the initial amount and rate of change given a table for a linear function?The table of linear function represents the given parameter
On the table, we have the following points
(x, y) = (6, 467) and (10, 647)
The rate of change is calculated as
Rate = (y2 - y1)/(x2 - x1)
So, we have
Rate = (647 - 467)/(10 - 2)
Evaluate
Rate = 22.5
This means that the rate of change is $22.5
The initial amount is calculated as
y = m(x - x1) + y1
Where
m = 22.5
So, we have
y = 22.5(x - x1) + y1
Using one of the points, we have
y = 22.5(x - 6) + 467
Set x = 0
So, we have
y = 22.5(0 - 6) + 467
Evaluate
y = 332
Hence, the initial amount and rate of change given a table for a linear function are $332 and $22.5, respectively
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Lindsey is building a skateboard ramp. She wants the ramp to be 1 foot tall at the end and she wants it to make a 15^{\circ} angle with the ground. What length of board should she buy for the ramp itself? Round to the nearest foot.
The term "length" is used to describe an object's size or the separation between two points. Lindsey must buy 4 feet of the board for the ramp itself.
What is meant by length?The term "length" refers to the measurement or size of something from end to end. In other terms, it is the greater of the upper two or third dimension of a geometric shape or object.
Distance exists estimated in length. The length contain the dimension of distance in the International System of Quantities. The majority of measurement systems select a base unit for length from which all other units exists derived. The meter serves as the foundational unit of length in the International System of Units.
A rectangle, for instance, has length and width as its dimensions.
1/x = 15°
x = 1/sin 15°
simplifying the above equation, we get
x = 3.9ft
x ≈ 4 ft
Therefore, the value of x ≈ 4 ft.
Lindsey must buy 4 feet of the board for the ramp itself.
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PLEASE HELP ME WITH THIS!!!!
Julio walks 3 1/2 miles in 1 1/4 hours. Find unit rate
Answer:
3 1/2 ÷ 1 1/4
7/2 ÷ 5/4
7/2 · 4/5
28/10
2.8
Step-by-step explanation:
Please help!:)))))))))))
Answer:
one way to name the symbol is our and another way to name the symbol is rco
the question is shown in the picture
Answer:
Final Cost of 3 pounds: 7.25
Final cost of p pounds: 3.50p
Step-by-step explanation:
3.50p - 3.25 = ?
3.50(3) - 3.25 = ?
10.50 - 3.25 = $7.25
Write an expression of the cost to buy at least one pound of chicken.
3.50p
I hope this helps!
Danielle sells beauty supplies and earns a base salary of $320.00 per week plus a 8% comission on sales. During one particular week, she sells $2879 worth of beauty supplies. How much does she make for that week? Round to the nearest cent.
Answer$550.32
Step-by-step explanation: 7day = $320
commission = 8% of 2879
=230.32
total earnings = 320 + 230.32
= 550.32
14x futher simplfied
Answer:
14x cannot be simplified any further.
Answer:
No, 14x can not be further simplified.
Step-by-step explanation:
I hope this helps.
which set of mixed numbers has a difference less than 1
1 1/2-1 1/9
3 3/4-2 1/7
2 4/5-1 1/3
2 7/9- 1 1/3
Only [tex]$1\frac{1}{2} - 1\frac{1}{9} = \frac{7}{18}[/tex] is less than 1.
We have a set of mixed numbers.
We have to identify which set of mixed numbers has a difference less than 1.
What are Mixed Numbers ?A mixed number is a whole number, and a proper fraction represented together. It generally represents a number between any two whole numbers. Any mixed fraction can be converted into normal fraction using the formula -
[tex]X\frac{Y}{Z} =\frac{Z\times X+Y}{Z}[/tex]
According to the question -
Let us solve them one by one (for difference to be less than 1, the denominator should be less than numerator) -
A = [tex]$1\frac{1}{2} - 1\frac{1}{9} = \frac{7}{18}[/tex] B = [tex]$3\frac{3}{4} - 2\frac{1}{7} = \frac{45}{28}[/tex]C = [tex]$2\frac{4}{5} - 1\frac{1}{3} = \frac{22}{15}[/tex]D = [tex]$2\frac{7}{9} - 1\frac{1}{3} = \frac{13}{9}[/tex]Hence, only [tex]$1\frac{1}{2} - 1\frac{1}{9} = \frac{7}{18}[/tex] is less than 1.
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Noah is buying a pair of jeans and using a coupon for 10% off.
The total price is $56.70, which includes $2.70 in sales tax.
Noah's purchase can be modeled by the equation:
`x-0.1x+2.70=56.70`
What does the solution to the equation mean in this situation?
Answer: The answer to this equation is 53.91
At a convention, 192 speakers gave one or more presentations of varying lengths. The histogram
summarizes the total presentation time, in hours, of each speaker.
Number of speakers
90
80
70
60
50
40
30
20
10
0
0 1 2 3 4 5 6 7
Total presentation time (hours)
What interval contains the 25th percentile for this data?
The 25th percentile of the data is represented by the 0 to 1 hour range.
48 speakers, or around 25% of the total of 192 speakers, are present.
According to the graph, 60 presenters gave presentations that lasted between 0 and 1 hours.
This means that 48 is between0 and1.
A score that compares a certain score to the scores of the other group members is known as a percentile. It shows the percentage of scores that a particular score outperformed.
A person's performance is gauged by using the percentile calculation to compare it to others. A student's test score is compared to that of other applicants using the percentile approach.
Therefore, the 0 to 1 hour period contains the data's 25th percentile.
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Answer the questions by drawing on the coordinate plane below.
(a) Draw the image of
ΔABC
∆ABC
under the dilation with scale factor 3 and the origin as the center of dilation. Label the image
ΔA'B'C'
∆A′B′C′
. Make sure to include the coordinates of A’, B’, and C’.
(b) Draw the image of
ΔDEF
∆DEF
under the dilation with scale factor
−12
−12
and the origin as the center of dilation. Label the image
ΔD'E'F'
∆D′E′F′
. Make sure to include the coordinates of D’, E’, and F’.
Answer:
Answer:
(b) Draw the image of
ΔDEF
∆DEF
Step-by-step explanation:
Alan deposits $10 per month into his savings account. Which expression could represent the amount he saves, in dollars, in y years?
Answer:
in 1 year Allan would save 120 dollars, this is because, 10x12=120
Step-by-step explanation:
to find out what he would save I 2 years just multiply 120 by 2, 120x2=240, and for 3 years multiply 120 by 3, and so on.
Write an equation in point-slope form of the line having the given slope that contains the given point.
m=-3/4, (8,-1)
The equation in point-slope form of the line having the given slope that contain the given point m=[tex]-\frac{3}{4}[/tex] and (8,-1) is [tex]y+1=-\frac{3}{4}(x-8)[/tex]
Given,
m = [tex]\frac{-3}{4}[/tex]
The point = (8,-1)
The point-slope form of the line
[tex](y-y_{1} )=m(x-x_{1})[/tex]
Substitute the values in the equation
[tex](y-(-1))=-\frac{3}{4}(x-8)\\ y+1=-\frac{3}{4}(x-8)[/tex]
Hence, the equation in point-slope form of the line having the given slope that contain the given point m=[tex]-\frac{3}{4}[/tex] and (8,-1) is [tex]y+1=-\frac{3}{4}(x-8)[/tex]
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(question in the in image above the other side if angle Q is 113
Find x
Answer:
x = 85
Step-by-step explanation:
the exterior angles of a polygon sum to 360°
note the exterior angle at P = 180° - 90° = 90°
sum the 4 exterior angles and equate to 360
x + 72 + 113 + 90 = 360
x + 275 = 360 ( subtract 275 from both sides )
x = 85
Negative 3 times negative 8
Answer:
Step-by-step explanation:
-24
√ 81 )^2 I can't figure this out. Sorry to bother anyone!
Answer: 81
Step-by-step explanation: The square root and the squared function cancel each other out
Find the eighth term of each geometric sequence. -30,7.5,-1.875, . . . . .
The eighth term of the given geometric sequence is: 0.00183.
What is a geometric progression?A geometric progression, sometimes referred to as a geometric sequence in mathematics, is a series of non-zero numbers where each term following the first is obtained by multiplying the preceding one by a constant, non-zero value known as the common ratio.
Given: -30, 7.5, -1.875, ....
Here, [tex]\frac{7.5}{-30}=\frac{-1.875}{7.5}=-0.25[/tex]
That is, the given geometric sequence has a₁ = -30 and r = -0.25
The nth term of a geometric sequence is given by: [tex]a_n=a_1(r^{n-1})[/tex]
For n = 8, [tex]a_8=(-30)(-0.25)^7[/tex] ≈ 0.00183
Hence, The eighth term of the given geometric sequence is: 0.00183.
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Under his cell phone plan, Logan pays a flat cost of $58 per month and $3 per gigabyte. He wants to keep his bill under $70 per month. Use the drop-down menu below to write an inequality representing gg, the number of gigabytes he can use while staying within his budget.
PLEASE HELPPPP 3
The inequality which can be used to determine the number of gigabytes is 58 + 3x < 70 and the solution is x < 4
How to write and solve an equation which can be used to determine the number of gigabytes?The given parameters are
Flat cost = $58
Rate = $3 per gigabyte
Budget = Under $70
The equation is represented as:
Total cost = Flat cost + Rate * Number of gigabyte
So, we have
y = 58 + 3x
The budget is under 70
So, we have
58 + 3x < 70
Subtract 58 from both sides
So, we have
3x < 12
Divide both sides by 3
So, we have
x < 4
Hence. the inequality which can be used to determine the number of gigabytes is 58 + 3x < 70 and the solution is x < 4
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A string is vibrating at 220 MHz and the wavelength of the waves on the string is 2.20m. Find the speed of these waves as they travel up and down the string
The wavelength of the waves on a string that is vibrating at 220 MHz is 2.20 m. These waves move at a 4840 rpm rate as they move up and down the string.
What is a wave length?A waveform signal that is carried in space or down a wire has a wavelength, which is the separation between two identical places (adjacent crests) in the consecutive cycles. This length is typically defined in wireless systems in meters (m), centimeters (cm), or millimeters (mm) (mm). According to the available data, the wavelength is more frequently expressed in nanometers (nm), which are units of 10-9 m, or angstroms (), which are units of 10-10 m, for infrared (IR), visible light (VL), ultraviolet (UV), and gamma radiation ().
V=∧F
V=220×22
V=4840m/s
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98!/100! x 10 (! = the number times every number before it and it) ex: 4! = 1 x 2 x 3 x 4
The value of the factorial expression is 99/10
How to evaluate the factorial expression?The expression is given as
98!/100! x 10
The above expression implies that we multiply 10 by the quotient of 98! and 100!
This can be done directly using a calculator, and it can be solved step by step
The step by step procedure is as follows
Expand the denominator
98!/100! x 10 = 98!/100 * 99 * 98! x 10
Evaluate the quotient
98!/100! x 10 = 1/100 * 99 x 10
This gives
98!/100! x 10 = 1/10 * 99
Evaluate the product
98!/100! x 10 = 99/10
Hence, the value of the factorial expression is 99/10
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