Out of 350 racers who started the marathon, 310 completed the race, 30 gave up, and 10 were disqualified. What percentage did not complete the marathon?
Answers
Answer:
The answer is %11.42 I think
Step-by-step explanation:
30+10=40
40/350= 0.1142
0.1142x100= %11.42
First divide the total of people who didn't complete the race by the total of racers which is 350 total racers.
Then u multiply ur answer by 100 to get ur percentage which is 11.42.
Related Questions
Sam invest $8333 into a savings account with a compound interest of 2.7% for 10 years what is Sams balance after 10 years
Answers
Answer: 10,582.91
Step-by-step explanation: 2.7%*10=27% 8,333*127%= $10,582.91
Answer:
8360
Step-by-step explanation:
hope this is the right answer :)
Graph the set of points. Which model is most appropriate for the set?
(-2,3), (-1,-3), (0, -5), (1, -3), (2,3)
Answers
Model B is the most appropriate for the set (-2,3), (-1,-3), (0, -5), (1, -3), (2,3).
What is Linear, Quadratic, & Exponential Models?A mathematical model that may be expressed as a series of quadratic equations or as a quadratic equation, such as Y = aX2 + bX + c. When a quadratic equation is graphed, the connection between the variables is represented by a parabola.The y-values in a linear connection differ by an equal amount. The y-values have identical ratios in an exponential relationship.First differences are constant in linear functions. Second differences in quadratic functions are always the same. A constant ratio characterises exponential functions.Based on an equation like: where Y = deterioration, T = time, and A and B = parameters to be calculated by the regression approach based on historical data, the exponential model represents the degradation failure process.Learn more about Linear, Quadratic, & Exponential Models refer to :
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1. Which set of ordered pairs DOES NOT represent a function?
a. (0, 1), (2,3), (3,4), (5,6)
b. (1, 1), (2, 2), (3,3), (4,4)
c. (1,4), (1, 5), (1,6), (1,8)
d. (0,7), (2, 4), (4,7), (5,7)
Answers
Answer:
C.
Step-by-step explanation:
because x value cannot be repeated in an ordered pair
1/2 of 4/3 = 1/2 of ______thirds =______ thirds
Answers
Answer:
four, two
Step-by-step explanation:
1/2 of 4/3 is half of four thirds. Half of four is two, so it would be two thirds
I hope this helps! :)
100 points+Brainliest for correct answer
An electron on an energy level has an energy of 16.32 x 10−19 J. It moves to another level by releasing 5.4 x 10−19 J of energy. Which of the following descriptions mostly likely explains what occurred?
The electron moved down to an energy level and has an energy of 10.92 x 10−19 J.
The electron moved down to an energy level and has an energy of 21.72 x 10−19 J.
The electron moved up to an energy level and has an energy of 10.92 x 10−19 J.
The electron moved up to an energy level and has an energy of 21.72 x 10−19 J.
Answers
Answer:
The electron moved down to an energy level and has an energy of
\(10.92 \times 10^{-19} \textsf{J}\)
Step-by-step explanation:
\(\textsf{initial energy level of electron}= 16.32 \times 10^{-19} \textsf{J}\)
\(\triangle E =\textsf{energy released}= 5.4 \times 10^{-19} \textsf{J}\)
A positive energy change means that the electron absorbs energy, while a negative energy change implies a release of energy from the electron.
Therefore, when an electron absorbs energy, the electron moves up to higher energy levels, and when an electron releases energy, it moves to lower energy levels.
\(\triangle E=E_2-E_1\)
\(\implies 5.4 \times 10^{-19} = 16.32 \times 10^{-19} -E_1\)
\(\implies E_1= 16.32 \times 10^{-19} -5.4 \times 10^{-19}\)
\(\implies E_1= 10.92 \times 10^{-19}\)
Answer:
The electron moved down to an energy level and has an energy of
\(10.92 \times 10^{-19} \textsf{J}\)
One month Sam rented 3 movies and 5 video games for a total of $32. The next month, he rented 12 movies and 2 video games for a total of $29. Find the rental cost for a movie and a video game.
Answers
Using a system of equations, the rental cost for a movie and a video game is as follows:
Movie = $1.50Video game = $5.50.What is a system of equations?A system of equations is two or more equations solved concurrently or at the same time.
A system of equations is also described as simultaneous equations.
Movies Video Total
Games Cost
First month rental 3 5 $32
Second month rental 12 2 $29
Let the rental cost per movie = x
Let the rental cost per video game = y
Equations:
3x + 5y = 32 ... Equation 1
12x + 2y = 29 ... Equation 2
Multiply Equation 1 by 4:
12x + 20y = 128 ... Equation 3
Subtract Equation 2 from Equation 3:
12x + 20y = 128
-
12x + 2y = 29
18y = 99
y = 5.5
Substitute y = 5.5 in Equation 1 or 2:
12x + 2y = 29
12x + 2(5.5) = 29
12x + 11 = 29
12x = 18
x = 1.5
Thus, based on simultaneous equations, the rental cost for a movie is $1.50 while a video game's is $5.50.
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Does anyone know what the table is? I need help
Answers
Answer:
yea its the thing you eat your food on at breakfast lunch dinner etc.
Step-by-step explanation:
What proportion results in the equation 9m=10n?
Answers
Answer:
the 2 nd one 9/m=10/n
Step-by-step explanation:
Find the exact value of (7\pi )/(6)) by using the unit circle.
Answers
To find the exact value of (7π/6) using the unit circle, locate the angle (π/6) on the unit circle in the second quadrant, determine the coordinates, and adjust the y-coordinate to be negative. The final answer is (√3/2, -1/2). This answer is obtained by understanding the reference angle and using the coordinates of the point where the angle intersects the unit circle.
To find the exact value of (7π/6) using the unit circle, follow these steps:
1. Start by understanding the reference angle. The reference angle for (7π/6) is (π/6).
2. Locate the angle (π/6) on the unit circle. This angle lies in the second quadrant.
3. Determine the coordinates of the point where the angle intersects the unit circle. For (π/6), the x-coordinate is √3/2 and the y-coordinate is 1/2.
4. Since (7π/6) lies in the second quadrant, the x-coordinate will remain the same, but the y-coordinate will be negative. Therefore, the coordinates for (7π/6) are (√3/2, -1/2).
5. The exact value of (7π/6) is (√3/2, -1/2).
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Uma atleta percorreu cinco oitavos de uma pista e ainda precisa percorrer 75 quilômetros para completar seu percurso . Quantos quilômetros a atleta percorrerá no total?
Answers
Answer:
The athlete will run 200 kilometers.
A atleta percorrerá 200 quilômetros no total.
Step-by-step explanation:
She will run x kilometers.
She has already run 5/8 of the distance(5/8 of x), and still needs to run 75 kilometers.
So
\(\frac{5x}{8} + 75 = x\)
\(x - \frac{5x}{8} = 75\)
\(\frac{8x - 5x}{8} = 75\)
\(3x = 8*75\)
\(x = \frac{8*75}{3}\)
\(x = 200\)
The athlete will run 200 kilometers.
A atleta percorrerá 200 quilômetros no total.
Evaluate 15n +19 if n = 1/3
Answers
Answer:
Step-by-step explanation:
15(1/3) + 19
5 + 19 = 24
Sleep apnea is a condition involving irregular breathing during sleep. Suppose that 20% of a population of men experience sleep apnea. A random sample of n-64 men is to be drawn from this population. What is the mean of the sampling distribution for the sample proportion of men who experience sleep apnea? 0.31 O 0.20 O 0.80 O None of the above
Answers
The mean of the sample population is option (b) 0.20.
The random variation of the sample proportion occurs because each sample is different and may not perfectly represent the population. This means that the sample proportion will vary from sample to sample due to chance. The standard deviation of the sampling distribution gives us an idea of how much the sample proportion is expected to vary from the mean.
In this case, the mean of the sampling distribution is equal to the population proportion of 20% of men with sleep apnea. The standard deviation can be calculated using the formula:
√(p * (1 - p) / n)
where p is the population proportion and n is the sample size.
For a population proportion of 20% and a sample size of 64, the standard deviation would be:
√(0.20 * (1 - 0.20) / 64) = 0.05
So, the mean of the sampling distribution is 20% and the standard deviation is 0.05. This tells us that the sample proportion is expected to be around 20%, but can vary by up to 0.05 in either direction.
Since, this variation is very small, we consider the mean of the sample population to be 0.20.
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Jimmy's lunch box in the shape of a half cylinder on a rectangular box.
Find the total volume of metal needed to manufacture it
Answers
Answer:10cm 5cm 7 Jim's lunch box is in the shape of a half cylinder on a rectangular box. To the nearest whole unit, what is a The total volume it contains? b The total area of the sheet metal in 10 in needed to manufacture it? This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts
Step-by-step explanation:
How far does the tip of a minute hand on a clock travel in 15 minutes if the distance from the center to the tip is 8cm? Leave your answers in terms of pi or round your answer to the nearest tenth.
SHOW WORK
Answers
The tip of the minute hand on a clock travels a distance of 4π inches in 15 minutes.
How to find the distance of the tip minute handThe distance traveled by the tip of a minute hand on a clock can be calculated using the circumference formula.
The circumference of a circle is given by the formula:
C = 2πr C is the circumference, π is pi (approximately 3.14159) and r is the radius.
The distance from the center of the clock to the tip of the minute hand is the radius is 8 centimeters.
The circumference of the circle traced by the tip of the minute hand is:
\(\text{C} = 2\pi \text{r}\)
\(= 2\pi (8)\)
\(= 16\pi \ \text{centimeters}\)
Since the minute hand travels the full circumference of the circle in 60 minutes, in 15 minutes it will cover 15/60 = 1/4 of the circumference.
The distance traveled by the tip of the minute hand in 15 minutes is:
\(\text{Distance} = \huge \text(\dfrac{1}{4}\huge \text) \times C\)
\(= \huge \text(\dfrac{1}{4}\huge \text) \times (16\pi)\)
\(= 4\pi \ \text{centimeters}\)
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Answer:
4π cm ≈ 12.6 cm
Step-by-step explanation:
The clock can be modelled as a circle, where the radius (r) is equal to the length of the minute hand: r = 8 cm.
A clock face is divided into 12 equal sectors (numbered 1 to 12).
It takes 60 minutes for the minute hand to complete one revolution of the clock. Therefore, each sector represents the passing of 5 minutes.
This means that 15 minutes equals 3 sectors, which is a quarter of the circle.
To find the distance the tip of the minute hand travels in 15 minutes, we need to find a quarter of the circumference of a circle with radius 8 cm.
The formula for the circumference of the circle is C = 2πr, where r is the radius. Therefore, the equation to find the distance the tip of the minute hand travelled in 15 minutes is:
\(\sf Distance=\dfrac{2 \cdot \pi \cdot 8}{4}\)
Simplifying, we get:
\(\sf Distance=\dfrac{16 \cdot \pi}{4}\)
\(\sf Distance=4 \pi\)
Therefore, the minute hand will travel 4π cm or approximately 12.6 cm (to the nearest tenth) in 15 minutes.
50 POINTS!!!!!!!! PLEASE ANSWER THIS QUICKLY WITH AN EXPLANATION!!!!!!!!! ANSWER ALL OF THEM
Answers
Answer:
(b) 27°
(c) 34°
( ) 27°
Step-by-step explanation:
Angle relations involving lines, parallel lines, and triangles come into play here.
angles of a linear pair total 180°angles of a triangle total 180°vertical angles are congruentcorresponding angles at a transversal crossing parallel lines are congruent(b)The interior angles at W and Y will be the supplement of the exterior angles at those points. The sum of interior angles is 180°.
(180° -6x) +90° +(180° -4x) = 180°
270° = 10x . . . . . . . . . add 10x and simplify
27° = x
(c)The vertical angles at S are congruent. This tells us ...
3x +∠PSQ = 4x
∠PSQ = x
The sum of angles in triangle PSQ is 180°, so we have ...
x +x +(180° -68°) = 180°
2x = 68° . . . . . . . . add 60°-180°
x = 34° . . . . . . . . . divide by 2
( )Angles BAD and EDF are corresponding angles, hence congruent. The sum of angles in triangle BAD is 180°.
2x +2x +72° = 180°
4x = 108° . . . . . . subtract 72°
x = 27° . . . . . . . . divide by 4
need answer asap thank you
Answers
Answer:
56
Step-by-step explanation:
First of all, if the width of the frame is 2, then add 2 to both sides of 7 to get the frame length7 + 2 + 2 = 11Do the same for 33 + 2 + 2 = 7Area of frame and white rectangle combined = 11 × 7 = 77Area of white rectangle is 7 × 3 = 21Now to get the area of the blue bit, subtract 21 from 77This gives you 56What is the volume of this sphere? help plz.
Answers
Answer:
3821057.63 m³
Step-by-step explanation:
volume of sphere : V=(4/3)πr³
here given r is 97 and π is 3.14
volume = (4/3) * 3.14 * 97³
= 3821057.63 m³
Answer:
3821057.63 m³Step-by-step explanation:
We know that:
Volume of Sphere = (4/3πr³)π = 3.14Work:
Volume of Sphere = 4/3πr³=> Volume of Sphere = 4/3 x π x r³=> Volume of Sphere = 4/3 x π x r x r x r=> 4/3 x π x r x r x r=> 4/3 x 3.14 x 97 x 97 x 97=> 3821057.626=> 3821057.63 m³Hence, the volume of sphere is 3821057.63 m³.
What is the formula for finding circumference given the radius?
Answers
Answer:
\(C = 2\pi r\\\)
Step-by-step explanation:
\(Circumference = 2\times \pi \times r\)
Anyone know the answer
Answers
Answer:
S(4) = 2
Step-by-step explanation:
S(n) = n(n - 3) / 2
S(4) = 4(4 - 3) / 2
= 4 x 1 / 2
= 4/2
= 2
3:Let f be a quadratic function such that
f(x) = ax² +bx+c = a (x-h)² + k
If k < 0, for what values of a will f(x) have no real zeros?
O a=0
O a<0
O azo
4.
O a>0
O aso
none of the answer choices
Answers
Answer:
O a=0
Step-by-step explanation:
I need help on this one
Find the selling price.
Cost To Store: $50
Markup: 10%
The selling price is $blank
Answers
The selling price of the item at 10% marlkup is $55
Finding the selling price of the itemFrom the question, we have the following parameters that can be used in our computation:
Cost To Store: $50Markup: 10%Using the above as a guide, we have the following:
Selling price = Cost To Store * (1 + Markup)
substitute the known values in the above equation, so, we have the following representation
Selling price = 50 * (1 + 10%)
Evaluate
Selling price = 55
Hence the selling price of the item is $55
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20 POINTS AND BRAINLEST A sample of restaurants in a city showed that the average cost of a glass of iced tea is $1.25 with a standard deviation of 7¢. If a new restaurant charges a price for iced tea that has a z-value of -1.25, then what is the tea’s actual cost? a. $1.00 c. $1.16 b. 89¢ d. $2.00 A student took two national standardized tests while applying for college. On the first test, SEE IMAGE. If he scored 630 on the first test and 45 on the second test, on which test did he do better? a. first test b. second test
Answers
Answer:
1) \( x= \mu +z\sigma = 1.25 -1.25*0.07= 1.16\)
The best answer woud be:
c. $1.16
2) If we find the z score for the first test we got:
\( z=\frac{630-475}{75}= 2.07\)
And for the second test:
\( z=\frac{45-32}{6}= 2.17\)
The z score for the second test is greater so then the answer would be:
b. second test
Step-by-step explanation:
For the first question:
For this case we have the following parameters are:
\(\mu = 1.25 , \sigma =0.07\)
And we also know that the z score is \( z=-1.25\) and we can use the z score formula given by:
\( z=\frac{X -\mu}{\sigma}\)
And solving for x we got:
\( x= \mu +z\sigma = 1.25 -1.25*0.07= 1.16\)
The best answer woud be:
c. $1.16
For the second question:
First test \(\mu = 475, \sigma =75\)
Second test \( \mu= 32, \sigma=6\)
630 for the first test and 45 for the second
If we find the z score for the first test we got:
\( z=\frac{630-475}{75}= 2.07\)
And for the second test:
\( z=\frac{45-32}{6}= 2.17\)
The z score for the second test is greater so then the answer would be:
b. second test
Solve the Equation
-8.3 = d+4.7
Answers
Answer:
d = -13
Step-by-step explanation:
-8.3 = d + 4.7
-8.3 - 4.7 = d
-13 = d
-8.3=d+4.7
What you want to do is flip the equation like this:
d+4.7=-8.3
The next step is to subtract 4.7 from both sides of the equation:
d+4.7=-8.3
-4.7 (both sides)
this equals to d=-13
Your final answer is d=-13 (negative 13).
Hope this helps!!
Can someone help me please
Answers
Answer:
31.42 m
Step-by-step explanation:
circumference = (pi)d
circumference = 3.14159 * 10 m
circumference = 31.4159 m
Answer: 31.42 m
Answer: circumference =31.42m
Step-by-step explanation:
help 50 brainly for first answer
Answers
Answer: B
Step-by-step explanation:
NO FILES I need help really bad and I need this answer correct plz
Answers
Answer:
5
Step-by-step explanation:
First off this is a complementary angle so it will add up to 90 degrees so the answer is 5 because 8 x 5 = 40 and
40 + 50 = 90 Hope this helps!
Calculate the surface area
Answers
To calculate the surface area of a rectangular prism, we need to find the area of each of its six faces and then add them up. In this case, the dimensions of the shape are:
Length = 8 cmWidth = 3 cmHeight = 6 cmRefer to the attachment below.
Three pairs of facesThere are three pairs of faces on a rectangular prism:
Two faces (top & bottom) with dimensions: Length × Width (8 cm × 3 cm).Two faces (front & back) with dimensions: Length × Height (8 cm × 6 cm).Two faces (left & right) with dimensions: Width × Height (3 cm × 6 cm).Finding the areaArea of Length × Width faces8 cm × 3 cm = 24 cm²
Since there are two of these faces, the total area is:
2 × 24 = 48 cm²
Area of Length × Height faces8 cm × 6 cm = 48 cm²
Since there are two of these faces, the total area is:
2 × 48 = 96 cm²
Area of Width × Height faces3 cm × 6 cm = 18 cm²
Since there are two of these faces, the total area is:
2 × 18 = 36 cm²
Adding the areas of the facesNow, add up the areas of all six faces:
Surface Area = 48 + 96 + 36 = 180 cm²
AnswerSo, the surface area of the rectangular prism is 180 cm².
________________________________________________________
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The table represents a linear relationship
X—2 0 4
Y-4 3 1
Which equation represents the table
Y=1/2x+5
y=-1/2x+3
Y=2x-3
Y=-4x+2
Answers
The linear relationship illustrated in the provided table can be effectively described by the equation Y = -4x + 2. Option D.
To determine the equation that represents the given table with the values of x and y, we can observe the pattern and find the equation of the line that fits these points.
Given the table:
X: 2 0 4
Y: -4 3 1
We can plot these points on a graph and see that they form a straight line.
Plotting the points (2, -4), (0, 3), and (4, 1), we can see that they lie on a line that has a negative slope.
Based on the given options, we can now evaluate each equation to see which one represents the line:
Y = 1/2x + 5
When we substitute the x-values from the table into this equation, we get the following corresponding y-values: -3, 5, and 6. These values do not match the given table, so this equation does not represent the table.
Y = -1/2x + 3
When we substitute the x-values from the table into this equation, we get the corresponding y-values: 4, 3, and 2. These values also do not match the given table, so this equation does not represent the table.
Y = 2x - 3
When we substitute the x-values from the table into this equation, we get the corresponding y-values: -4, -3, and 5. These values do not match the given table, so this equation does not represent the table.
Y = -4x + 2
When we substitute the x-values from the table into this equation, we get the corresponding y-values: -6, 2, and -14. Interestingly, these values match the y-values in the given table. Therefore, the equation Y = -4x + 2 represents the table.
In conclusion, the equation Y = -4x + 2 represents the linear relationship described by the given table. So Option D is correct.
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Which of the equations below could be the equation of this parabola?
OA y--¹x²
OB. x--²
C. x-²
D. y - x²
10
(0,0)
Vertex
10
Answers
An equation that could be the equation of this parabola include the following: C. x = 1/12(y²).
How to determine the equation of a parabola?In Mathematics, the standard equation of the directrix lines for any parabola that opens to the right is represented by this mathematical expression:
x = a(y - k)² + h.
Where:
h and k represent the vertex.a represent the leading coefficient.By critically observing the graph which models the equation of this parabola, we can logically deduce that the vertex is at point (0, 0) and as such, we have the following:
h = 0
k = 0
a = positive.
x = a(y - k)² + h.
x = a(y - 0)² + 0.
x = ay²
Therefore, a possible equation is x = 1/12(y²).
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PLZ HELPPPPPPPPPPPPP GIVING BRAINLIST Match each expression to its value.
1. -1 + 2
1
2. 1 + (-2)
-3
3. -1 - 2
3
4. 1 - (-2)
-1
Answers
Answer:
1 and 3, 2 and 4.
Step-by-step explanation:
1. -1.66666666667
2. 1
3. -1.66666666667
4. -1