a). The formula that expresses v in terms of t is v = 22 - 2t, b). As t increases from 3 to 5, v varies from 16 to 12, c). As t varies from 3 to 5, v changes by 16 - 12 = 4.
What is the volume?
'Volume' is a mathematical quantity that shows the amount of three-dimensional space occupied by an object or a closed surface. The unit of volume is in cubic units such as m3, cm3, in3, etc. Sometimes, volume is also termed capacity.
a). The volume of water in the tank, v, decreases by 2 gallons per hour, so the formula for v in terms of t is v = 22 - 2t.
b). As t increases from 3 to 5, v varies from 16 to 12. That is, as t goes from 3 to 5, v decreases from 22 - 2(3) = 16 to 22 - 2(5) = 12.
c). As t varies from 3 to 5, t changes by 5 - 3 = 2, and v changes by 16 - 12 = 4.
Hence, a). The formula that expresses v in terms of t is v = 22 - 2t, b). As t increases from 3 to 5, v varies from 16 to 12, c). As t varies from 3 to 5, v changes by 16 - 12 = 4.
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You have 60m of wire with which you can use to make the frame of
a rectangular block. Find the dimensions (length, width, height) of such a block with
maximum volume.
The dimensions for the block can be 3 x 4 x 5.
What are factors?Factor, in mathematics, a number or algebraic expression that divides another number or expression evenly—i.e., with no remainder.
For example, 3 and 6 are factors of 12 because 12 ÷ 3 = 4 exactly and 12 ÷ 6 = 2 exactly. The other factors of 12 are 1, 2, 4, and 12.
Given:
We have wire of length 60 m.
Now, to find the length, width and height of block we have to factorize 60.
60 = 3 x 4 x 5
So, the measurement of the block can be length x width x height can be
3 x 4 x 5.
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Also when you answer can you show work so I know how you got your answer please and thank you
The area covered by the circular spotlight is given as follows:
C. 153.86 square feet.
What is the area of a circle?The area of a circle of radius r is given by π multiplied by the radius squared, as follows:
A = πr²
π can be rounded to 3.14, hence the equation for the area is given as follows:
A = 3.14r².
The radius is of 7 feet, hence the area is given as follows:
A = 3.14 x 7²
A = 153.86 square feet.
Meaning that option C is the correct option for this problem.
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Please do both questions.
Ps- don’t ind the pics I drew
If the hand moves from the 12 o'clock position to the 5 o'clock position, it has traveled a distance is 9.5 cm.
What is the circumference of the circle?
The Circumference of a circle is basically the perimeter of the circle. It is given as (2×π×r) or (π×d).
The hand on a circular clock moves along the circumference of the circle, and the length of the circumference of a circle is given by the formula:
C = 2 * π * r
where C is the circumference, π is Pi (approximately equal to 3.14), and r is the radius of the circle.
In this case, the radius of the circle is half the length of the hand, or 12cm / 2 = 6cm.
So the circumference of the circle is:
C = 2 * π * 6 = 12 * π
Since the hand moves from the 12 o'clock position to the 5 o'clock position, it has traveled an angle of 5 * (360/12) = 150 degrees.
To find the distance traveled along the circumference, we need to multiply the circumference by the fraction of the circle traveled, which is equal to the angle in radians divided by 2π.
To convert from degrees to radians, we can use the formula:
radians = degrees * (π / 180)
So, the distance traveled by the hand is:
distance = C * (150 * (π / 180)) / (2 * π) = 12 * (150 * (π / 180)) / 2 = 9.5 cm (rounded to the nearest cm)
hence, if the hand moves from the 12 o'clock position to the 5 o'clock position, it has traveled a distance is 9.5 cm.
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What is the probability of guessing the top 3 horses in order in a field of 20 horses in the Kentucky derby?
The probability of guessing the top 3 horses in order in a field of 20 horses in the Kentucky derby is, Very low value approximately 0.000145
What is probability?Probability is a mathematical term, which can be defined as the ratio of the number of favorable outcomes to the total number of outcomes of an event. The possibility that an event will occur is measured by probability.
Probability of Event = Favorable Outcomes/Total Outcomes = X/n
Given that,
There are total 20 horses,
The probability of guessing the top 3 horses in order = ?
The probability of guessing the top 3 horses in order in a field of 20 horses in the Kentucky Derby would be 1 in 20 x 19 x 18 = 6840.
This means that the probability of guessing the top 3 horses correctly would be 1/6840 or approximately 0.000145.
It is a very low probability and requires a lot of knowledge, research, and luck to correctly guess the top 3 horses in order.
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What is the percent change from 82 to 67
First find the actual difference:
82 - 67 = 15
Now divide that difference by the starting value (82 in this case):
15 / 82 ≈ 0.182927
Convert that to a percent:
0.182927 = 18.2927%
That's the percent change, a decrease of about 18.2927%
Solve the inequalities below. Write the solution set in interval notation and graph the solution.
8x−12>158x-12>15
Solution:
Interval notation for the solution:
Step-by-step explanation:
Inequality Interval Notation Graph
Sajan Rai
Solve the inequalities below. Write the solution set in interval notation and graph the solution.
8x−12>158x-12>15
Solution:
Interval notation for the solution:
(-∞,5/8) U (5/8, ∞)
To graph the solution, we need to find the points that make the inequality true and shade the region that corresponds to these points. On the number line, we can start by finding x values that make the inequality equal to zero:
8x - 12 = 0
x = 12/8 = 3/2
and
15 - 8x = 0
x = 15/8 = 9/4
Next, we need to test values that are less than 3/2 and greater than 9/4 to determine the direction of the inequality. If the inequality is true for values less than 3/2, then we shade the region to the left of 3/2. If the inequality is true for values greater than 9/4, then we shade the region to the right of 9/4. In this case, since the inequality is "greater than," the shading goes to the right of 9/4 and to the left of 3/2.
Titing Tunction Rune -3 -2 -1 3 2 1 7 ty A -2 1 2 3 g(x) X Determine the values of h and k in the equation of g(x). g(x)=√√x-h+k
The values of h and k are given as follows:
h = 1.k = -2.What is a translation?A translation happens when either a figure or a function are moved horizontally or vertically.
The four translation rules for functions are given as follows:
Left a units: f(x + a).Right a units: f(x - a).Up a units: f(x) + a.Down a units: f(x) - a.The parent function for this problem is given as follows:
[tex]y = \sqrt[3]{x}[/tex]
Which makes the curve at the origin.
From the graph, the curve is made at point (1,-2), hence the translations are given as follows:
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At Cookout, 4 burgers and 3 containers of fries cost $16.40. Your finger rubbed off part of your receipt but you could see that each burger was $3.20. Find the cost of a container of fries. Explain your thinking.
The required container of fries costs $1.20, as er the given condition
What are equation models?The equation model is defined as the model of the given situation in the form of an equation using variables and constants.
Let's call the cost of a container of fries "x".
We know that 4 burgers cost 4 * $3.20 = $12.80.
So the total cost of burgers and fries is $12.80 + 3x = $16.40.
Subtracting the cost of the burgers from both sides:
3x = $16.40 - $12.80 = $3.60
Dividing both sides by 3:
x = $3.60 / 3 = $1.20
So each container of fries costs $1.20.
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i am a quadratic binomial with only one variable. when written in standard form, my lead coefficient is a 3 and my constant is a -7. who am i?
The quadratic binomial in discuss as described in the task content is; 3x² - 7.
What is the quadratic binomial as discussed?It follows from the task content that the expression in discuss is a quadratic binomial. In essence, there are only 2 terms.
Therefore, the expression should takes the form; ax² + b.
However, since the leading coefficient, a is said to be 3 and the constant, b is said to be -7; we have that;
3x² - 7.
Ultimately, the quadratic binomial is; 3x² - 7.
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hekp A living room floor measures 11 feet by 18.9 feet as indicated by the solid outline in the diagram below. The owner estimated the floor to be 12 feet by 20 feet as indicated by the dashed outline.
Flooring for the room costs $8 per square foot. What is the approximate difference in cost between the flooring to cover the actual area and the flooring to cover the estimated area of the living room floor?
A) $150
B) $320
C) $50
D) $250
E) $40
Answer: The actual area of the living room floor is 11 feet * 18.9 feet = 208.9 square feet. The estimated area of the living room floor is 12 feet * 20 feet = 240 square feet.
The difference in cost between the flooring to cover the actual area and the flooring to cover the estimated area of the living room floor is 240 square feet - 208.9 square feet = 31.1 square feet.
Therefore, the approximate difference in cost is 31.1 square feet * $8 per square foot = $248.80, which is closest to option (D) $250.
Step-by-step explanation:
in a convergent geometric series the sum to infinity is 18 and the sum of the first four terms is 130÷9 calculate the common ratio
The common ratio is approximately -0.6.
Step by step explanationLet the first term in the geometric series be "a" and the common ratio be "r". Then, the formula for the sum to infinity of a geometric series is:
S = a / (1 - r)
And the formula for the sum of the first n terms of a geometric series is:
Sn = a * (1 - r^n) / (1 - r)
So, using the information given:
18 = a / (1 - r)
And:
130/9 = a * (1 - r^4) / (1 - r)
Solving for "r" using these two equations:
18 = a / (1 - r) ==> a = 18 * (1 - r)
130/9 = a * (1 - r^4) / (1 - r) ==> 130/9 = 18 * (1 - r) * (1 - r^4) / (1 - r) ==> 130/9 = 18 * (1 - r^4)
Dividing both sides by 18:
7/5 = (1 - r^4)
So:
r^4 = 1 - 7/5 = -2/5
Taking the fourth root of both sides:
r = (-2/5)^(1/4)
So, the common ratio is approximately -0.6.
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An individual's checking account contained $505 on June 1. The individual then made the following transactions. The individual deposited $170, withdrew $226,
← withdrew $39, deposited $120, withdrew $366, and deposited $750. What was the individual's new balance after these transactions?
The individual's new balance after these transactions is $.
width of a triangle is 4 inches more than its width. the area of the rectangle is equal 5 inches more than 2 times the perimeter. find the length and width.
The length and width of the rectangle are 11 and 78 respectively.
What is Area?The area is the entire amount of space occupied by a flat (2-D) surface or an object's form. On a sheet of paper, draw a square using a pencil. It has two dimensions. The area of a form on paper is the area that it occupies.
Given, the length of a rectangle is 4 inches more than its width.
let x be the width of a rectangle.
thus, length = 4 + width
From the general formula of area and perimeter:
Area of rectangle = length*width
Perimeter of rectangle = 2(length + width)
In our case,
Area = x * (4 + x)
Area = x² + 4x
Perimeter = 2( 4 +x+ x)
Perimeter = 8 + 4x
Since the area of the rectangle is equal 5 inches more than 2 times the perimeter.
Thus,
x² + 4x = 5 + 2(8 + 4x)
x² + 4x = 5 + 16 + 8x
x² + 4x = 21 + 8x
x² + 4x -8x -21 = 0
x² - 4x -21 = 0
x = 7 and -3
Thus,
the width of the rectangle = 7
and the length of the rectangle = 11
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Complete question:
length of a rectangle is 4 inches more than its width. the area of the rectangle is equal 5 inches more than 2 times the perimeter. find the length and width.
A school has 55 teachers 825 students and. How many students are there per teacher?
Answer: 15 students per teacher
Step-by-step explanation:
825 students/55 teachers=15
Answer:
15
Step-by-step explanation:
825 divided by 55 = 15
An automobile dealership has found that for every 170 cars sold, 26 will be brought back to the dealer for major repairs. If the dealership sells 1360 cars this year, approximately how many cars will be brought back for major repairs?
Answer:
208 Cars will be brought back for major repairs.
Step-by-step explanation:
With the simple calculation of:
[tex]\frac{170}{1360}\frac{26}{x}[/tex]
We are solving for x.
We cross-multiply 1360 by 26.
35,360
Then divide that by 170.
which will get us the result of 208.
Here is a frequency distribution table (FDT) for a small data set: data value frequency 14 14 15 11 16 23 17 10 18 13 Find the following measures of central tendency: mean (I (Please show your answer to one decimal place.) median (Please enter an exact answer:) mode (Please enter an exact answer: )
The mean is 14.7, the median is 16, and the mode is 16.
To find the mean, we need to calculate the sum of all the data values and divide it by the total number of observations.
The sum of the data values is:
14 x 14 + 15 x 11 + 16 x 23 + 17 x 10 + 18 x 13 = 196 + 165 + 368 + 170 + 234 = 1043
The number of observations is:
14 + 11 + 23 + 10 + 13 = 71
The mean is calculated as follows,
1043 / 71 = 14.7 (rounded to one decimal place)
The median is the central value in the data collection. To find the median, we need to arrange the data values in ascending order and find the middle value. In this case, we have an odd number of observations, so the median is simply the middle value.
14, 14, 15, 15, 16, 16, 16, 16, 16, 16, 16, 17, 17, 18, 18, 18
The median is 16.
The mode is the value that appears most repeatedly in the data set. In this case, the mode is 16 since it occurs the most (23 times).
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kenneth wants to solve the system of equations shown below he made two
tables showing the value if y for different values of x
The variables of the equation systems are those x values where f(x) & g(x) are of identical value, as displayed in the table.
What do math equations mean?The definition of just an equation in algebra is a scientific statement that demonstrates the equality of two mathematical expressions. For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign.
The intersection spots of the functions that comprise up an equation system are where it has solutions when it is plotted on a graph.
The intersection points, when the units have the same numerical value, are where the solution to the equation may be found on a table.
The following are the solutions from the table provided by the picture at the conclusion of the response:
f(x) and g(x) both have a specific number of 14 with x = 1, indicating that x = 1.
f(x) and g(x) both have a numerical value of such 6 at x = 9, indicating that x = 9.
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The data set below shows the number of homework assignments required in math classes for a month. Write both at TRUE and a FALSE statement about this dataset. 22 23 23 21 18 4 17 15 23 20 24 15 25 16
The statement that is true based on the data set is B. There is one outlier that indicates an unusually small number of assignments required in that class.
How to solve this?The given data set is
22, 23, 23, 21, 18, 4, 17, 15, 23, 20, 24, 15, 25, 16
Arrange the data is ascending order.
4, 15, 15, 16, 17, 18, 20, 21, 22, 23, 23, 23, 24, 25
Divide the data in 4 equal parts.
(4, 15, 15), 16, (17, 18, 20), (21, 22, 23), 23, (23, 24, 25)
Now, we can say that
Q1= 16
Q3= 23
The interquartile range of the data set is 23- 16 = 7
If the data lie in the interval [Q1-1.5(IQR), Q3 + 1.5 (IQR)], then the data set has no outliers.
All the data lie in the interval [5.5,33.5] except 4. So, 4 is an outlier of the given data.
There is one outlier that indicates an unusually small number of assignments required in that class. Therefore the correct option is option B
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Which of the following statements is true based on the data set?
There is one outlier that indicates an unusually large number of assignments required in that class.
There is one outlier that indicates an unusually small number of assignments required in that class.
There are two outliers that indicate an unusually large number of assignments required in those two classes.
There are two outliers that indicate an unusually small number of assignments required in those two classes.
If the original quantity is 20 and the new quantity is 16 , what is the percent decrease?
The required percent decrease from 20 to 16 is given as 20%.
What is the percentage?The percentage is the ratio of the composition of matter to the overall composition of matter multiplied by 100.
Here,
To find the percent decrease, we can use the formula:
Percent Decrease = (original quantity - new quantity) / original quantity * 100%
Plugging in the values:
Percent Decrease = (20 - 16) / 20 * 100%
= 4 / 20 * 100%
= 20%
So, the percent decrease is 20%.
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Find the slope of the line passing through the points [-8, -3] and [-3, 4].
Answer:
[tex]\frac{7}{5}[/tex]
Step-by-step explanation:
Slope of a line = Gradient
[tex]= \frac{y_{2} - y_{1}}{x_{2} -x_{1} }[/tex]
Based on the two points provided in the question:
[tex]x_{1} = -8[/tex]
[tex]y_{1} = -3[/tex]
[tex]x_{2} = -3[/tex]
[tex]y_{2} = 4[/tex]
Slope = [tex]\frac{4 - (-3)}{-3 - (-8)}[/tex]
= [tex]\frac{4 + 3}{-3 + 8}[/tex]
= [tex]\frac{7}{5}[/tex]
15. ABC is
a. Congruent
b. Similar
c. Neither
to A'B'C'.
Answer:
Step-by-step explanation:
Similar
In the state of Indiana, 322000 people lacked basic math skills. If this is 5.6% of the population of Indiana residents aged 5 years and older, estimate the population of Indiana residents aged 5 years and older. Express your answer rounded to the nearest hundredth of a million
The population of Indiana residents aged 5 years and older is around 5.7 million.
What is percentage?Percentage is a way to express a number as a fraction of 100. It is often used to represent ratios and proportions in a more convenient and understandable form, especially in financial and statistical contexts. For example, 50% means 50 per 100, or half of a given quantity. It is denoted using the symbol "%".
Given that,
322000 people lacked basic math skills
5.6% of the population of Indiana residents aged 5 years and older
Let's call the population of Indiana residents aged 5 years and older "x".
The equation to estimate the population is:
322000 = x*5.6/100
322000 = x * 0.056
Dividing both sides by 0.056:
322,000 / 0.056 = x
x = 5750000
So, the population of Indiana residents aged 5 years and older is approximately 5.7 million.
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refers to the consistency of measures, whereas refers to the truthfulness of a measurement.
Reliability refers to the consistency of measures, whereas validity refers to the truthfulness of a measurement.
What do we mean by measure?The size, capacity, or amount of something determined by measurement. Use equal amounts of ingredients. Something used for measurement (such as a ruler or cup). A unit used to measure. A foot is a measure of length.
What is statistics in mathematics?Statistics is a science concerned with developing and studying methods for measure, collecting, analyzing, interpreting, and presenting empirical data.
Significance of statistics:Statistics is the branch of mathematics for collecting, analyzing and interpreting data. Statistics can be used to predict the future, determine the likelihood of certain events occurring, and answer research questions.
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The number of regular season wins for 10 football teams in a given season are given below. Determine the range, mean, variance, and standard deviation of the population data set. 2,10,15,2,,12,13,7,3,8
It falls between: The population mean is 13. 8. The population variance is 192. The population's standard deviation is 13.856.
Why do we calculate population variance?A key measure of dispersion in statistics is population standard deviation. additional reading Statisticians compute variance to determine how various values inside a data collection interact to one another. While calculating the population variance, one may also compute the dispersion in relation to the population means.
The range: 15 - 2 = 13
The population mean is:
Mean = ( 2 + 10 + 15 + 2 + 12 + 13 + 7 + 3 + 8 ) / 9 = 8
The population variance ( S² or Sigma² ):
S ² = 1/9 · ( ( 2 - 8 )² + ( 10- 8 )² + ( 15 - 8 )² + ( 2 - 8 )² + ( 12 - 8 )² + ( 13 - 8 )² + ( 7 - 8 )² + ( 3 - 8 )² + ( 8 - 8 )² )
S ² = 192
The population standard deviation:
S = √(S²) = √192 = 13.856
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Maddie wrote six different equations based on the triangle below.
60°
Four of the six equations that Maddie wrote are correct. Which four of the equations are correct?
sin 30 = 1
cos 60
12
1/201
tan 60 = √3
sin 60
tan 30-
=
cos 30 =
√2
2
√√2
2
Maddie wrote six different equations based on the triangle below.Four of the six equations that Maddie wrote are correct which are options A, D , E and F.
What is a Triangle?This is referred to as a polygon with three edges and three vertices.
Triangle ABC was given in the picture.
∠A = 60° and ∠B = 90° which is given in the figure
sin 60° = perpendiculer /hypotenuse
√3/2 = BC/10
BC = √3/2 × 10
BC = 5√3
tan 60° = perpendiculer /base
√3 = 5√3/AB
AB = 5√3/√3
AB = 5
sin 60° = 5√3/10 = √3/2
cos 60° = base / hypotenuse
cos 60° = 5/10 = 1/2
tan 60° = perpendicular /base
tan 60° = 5√3/5 = √3
cot 60° = 1 /√3
Therefore the equations which are correct are sin 60° =√3/2, cos 60° = 1/2, tan 60° = √3, and cot 60° = 1 /√3.
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Which expression represents "3 times the quantity 1 plus p"?
Answer: 3(1p)
Step-by-step explanation:
Answer: 3+3p or 3p+3
Step-by-step explanation:First write the information given. You will need to multiply the quantity 3 by each of the terms one and p. It should look something like this 3(1+p). Multiply three to both quantities and the answer yields 3+3p or 3p+3.
Math triangle word problem:
Answer:
2,810 feet
Step-by-step explanation:
Take a look at the diagram
There are two triangles formed with a common side AB
AB represents the vertical height of the plane = 5150 feet
AC represents the distance of car 1 from O
In ΔABC, m∠A = 90°, m∠ABC = 38°
Since the three angles of triangle must add up to 180°
90 + 38 +m∠C = 180
128 + m∠C = 180°
m∠C = 180 - 128 = 52°
In a right angle triangle where one side is the angle ∅, the ratio of the side opposite this angle to the side adjacent to the angle is tan∅
Using the values provided we get
tan(52°) = 5150/AC
AC= 5150/tan(52) = 4,023.62 feet ≈ 4024 feet
This is the horizontal distance of the first car from the plane
Similarly for ΔABD
m∠D = 180 - (90 + 53) = 37°
tan(37) = 5150/AD
AD= 5150/tan(53) = 6,834.28 feet ≈ 6834 feet
This is the horizontal distance of the second car from the plane
The distance between the two cars = 6,834 - 4,024
= 2,810 feet
5. Write the fraction 31415 10000 as a decimal number.
Answer:
To write 31415/10000 as a decimal you have to divide numerator by the denominator of the fraction.
We divide now 31415 by 10000 what we write down as 31415/10000 and we get 3.1415
The school team has 80 swimmers. The ratio of seventh-grade swimmers to all swimmers is 5 : 16. Write a proportion that gives the number s
of seventh-grade swimmers.
The number of seventh grade winners is 25.
What is a ratio?The quantitative relation between two amounts shows the number of times one value contains or is contained within the other. for example-"the ratio of computers to students is now 2 to 1"
Given here: total swimmers is 80 and the ratio of seventh to all swimmers is 5:16
According to the proportion in the question we get
5/16=s/80
s=5/16 × 80
s=25
The number of seventh grade winners is 25.
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A rectangular
farm has an area of 1/5 square miles. If
its length is 2/3 miles, what is its width?
Input your answer as a fraction.