Answer:
The answer is A on edge
Step-by-step explanation:
The number of ways the train could be made up are 4,151,347,200.
What is permutation?A permutation of a set is an arrangement of its members into a sequence or linear order, or if the set is already ordered, a rearrangement of its elements.
Now the given cars are 6 flatcars, 7 boxcars, and 3 livestock cars.
So the total number of cars, n = 6 + 7 + 3
= 16
Now, a train is made up of 9 cars,
Therefore, r = 9
Hence the required number of ways the train could be made is nPr
nPr = n!/(n-r)!
nPr = 16!/(16-9)!
nPr = 16!/7!
nPr = 16*15*14*13*12*11*10*9*8
nPr = 4,151,347,200
Hence,the number of ways the train could be made up are 4,151,347,200.
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6.
Find the area of the figure.
9 in.
11 in.
11 in.
6 in.
9 in.
Answer:
58806
Step-by-step explanation:
multiply them together
Ming throws a stone off a bridge into a river below.
The stone's height (in meters above the water), xxx seconds after Ming threw it, is modeled by:
h(x)=-5(x-1)^2+45h(x)=−5(x−1)
What is the maximum height that the stone will reach?
what is the meters
We have been given that Ming throws a stone off a bridge into a river below.
The stone's height (in meters above the water), x seconds after Ming threw it, is modeled by [tex]h(x)=-5(x-1)^2+45[/tex].
We are asked to find the maximum that the stone will reach.
We can see that our given equation is in vertex form of parabola [tex]y=a(x-h)^2+k[/tex] with vertex at point (h,k).
We can also see that leading coefficient is negative, so our given parabola is a downward opening parabola and its maximum value be at vertex.
The maximum height will be equal to y-coordinate of vertex.
We can see that vertex of our given parabola is at point (1,45). Therefore, the maximum height will be 45 meters.
The stone that Ming throws off the bridge reaches a maximum height of 45 meters. This is determined by the model equation for the stone's height as a function of time, which is a quadratic or parabolic function, with 45 as the maximum value.
Explanation:The question specifically concerns a parabolic formula representing the height of the stone thrown off the bridge over time: h(x) = -5(x-1)^2 + 45. This is a standard form of a parabolic or quadratic function, which is used to model the trajectory of an object under the force of gravity. In this form, the 45 at the end of the equation represents the maximum height, in meters, that the stone will reach. Hence, the maximum height that the stone will reach is 45 meters.
The reason is that the graph of the equation is an upside-down parabola, which means it opens downward. Thus, its maximum point, or vertex, is the top point of the graph, which corresponds to the height of the stone when it is at its peak. The equation is shifted such that this maximum point is (x, h(x)) = (1, 45).
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Mary needs a 90% on her final exam to get an a for the quarter.The exam has 75 questions how many questions does Mary need to answer correctly in order for her to get an A
Answer: 68 questions
Step-by-step explanation:
Given Data:
Exam questions = 75
Percentage needed by Mary for the quarter = 90%
therefore:
Total number of questions she needs to answer to get an A
= exam questions x percentage needed /100
= 75 * 90 / 100
= 6570 / 100
= 67.5
Approximately Mary needs to answer 68 questions correctly to score an A for the quarter
Can someone help me with my homework I really don’t get it:(
Answer: 60 hours
(I'll help you with the first one only because you need to learn this)
Step-by-step explanation: 36 divided by 3 is 12 and 720 divided by 12 is 60
If 4 more than two times a certain number is 3 less than the number, what is the number
Answer:
3
Step-by-step explanation:
If 4 less than 3 times a certain number is 2 more than the number
Let the number be x
First, three times of number is 3x
Then 4 less will be (3x - 4)
Two more than number is (x + 2)
Hence the algebraic equation will be
3x - 4 = x + 2
Now solving this equation
3x - 4 = x + 2
3x - x = 2 + 4
2x = 6
x = 6 / 2
x = 3
Thus the number is 3
#pickle rick yu ight
Answer:
q= 6
Step-by-step explanation
Answer:
6
Step-by-step explanation:
6+7q =48
7q= 48-6
7q= 42
q=42/7
q= 6
Do y’all like Tyler the created
Answer:
nah bro thats demarcus
Step-by-step explanation:
Which situation can be modeled by a linear function?
(1) The population of bacteria triples every day.
(2) The value of a cell phone depreciates at a rate of 3.5% each year.
(3) An amusement park allows 50 people to enter every 30 minutes.
(4) A baseball tournament eliminates half of the teams after each
round.
The population of bacteria triples every day is the situation can be modeled by a linear function. Option 1 is correct.
What exactly is a function?A function is a statement, rule, or law that specifies the connection between two variables. Functions are common in mathematics and are required for the formulation of physical connections.
A linear function may be used to describe the circumstance in which the number of bacteria triples every day.
Hence,option 1 is correct.
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Final answer:
The situation that can be modeled by a linear function is (3) An amusement park allowing 50 people to enter every 30 minutes.
It represents a scenario with a constant rate of change, suitable for a linear model such as y = 50x.
Explanation:
The situation that can be modeled by a linear function is (3) An amusement park allows 50 people to enter every 30 minutes. This scenario represents a situation where there is a constant rate of change, which aligns with the characteristic of a linear function. In this context, the independent variable represents the time in 30-minute intervals, and the dependent variable represents the number of people allowed to enter. The equation to model this situation could be y = 50x, where y is the total number of people and x is the number of 30-minute intervals that have passed.
Scenarios (1), (2), and (4) represent non-linear relationships. Specifically, (1) involves exponential growth as the bacteria population triples each day, which is a multiplicative rate of change rather than a constant additive rate. (2) Involves exponential decay as the value of a cell phone decreases at a percentage rate annually, and (4) involves exponential decay in the number of teams as the number is halved after each round.
Samuel earned 18.90 working last weekend. He worked for 2 and 1 fourth hours. Which equation and solution represents e, the amount Samuel earns each houre at his job
Answer:
The equation that represents the amount Samuel earns per hour is "e = (total earned)/(total time worked)", on last weekend he earned 8.4 per hour.
Step-by-step explanation:
Since Samuel worked a total of 2 and 1/4 hours it means that he worked:
hours worked = 2 + 1/4
hours worked = 8/4 + 1/4
hours worked = 9/4
He earned a total of 18.9 working that many hours. If we divide the total amount he earned by the number of worked hours we can find the total he earns per hour.
e = (total earned)/(total time worked)
e = 18.9/(9/4)
e = 18.9*(4/9)
e = 75.6/9
e = 8.4 per hour
The equation that represents the amount Samuel earns per hour is "e = (total earned)/(total time worked)", on last weekend he earned 8.4 per hour.
Answer:
2.25 =18.90e
samuel earns $8.40 per hour
Step-by-step explanation:
75 POINTS!!! WILL MARK BRAINLIEST!!!
Find the measure of angle LNM
m∠LNM = 54°
Here is why:
In this photo there are two important angles with very important features, a central angle and an inscribed angle.
A central angle is an angle that is in the center of the circle, so angle P is a central angle. The arc that is associated with this angle is going to be the same measure as the central angle. I have labeled this in the photo below as blue.
An inscribed angle is an angle that lies on the circle, so angle N is an inscribed angle. The arc that is associated with this angle will be double the amount of the inscribed angle, or the angle is half of the measure of the arc. I have labeled this in the photo below as red.
Since we know that the central angle is 108°, with what we know about central angles we know that arc LM is going to be 108° as well.
We also know that an inscribed angle is half the amount of the arc so...
108 ÷ 2 = 54
m∠LNM = 54°
The measure of the angle ∠LNM will be 54°.
What is a circle?It is the close curve of an equidistant point drawn from the center. The radius of a circle is the distance between the center and the circumference.
The central angle is double the angle at the periphery that was subtended by the same chords. Then the equation is given as,
∠LNM = 1/2 ∠LPM
∠LNM = 1/2 x 108°
∠LNM = 54°
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Based on the diagram below, which expression can be used to determine the distance between Seattle, WA, and San Francisco, CA?
We have been given diagram of a triangle. We are asked to write an expression that represents the distance between Seattle and San Francisco.
We will use law of cosines to solve our given problem.
[tex]c^2=a^2+b^2-2ab\text{cos}(C)[/tex], where a, b and c are sides corresponding to angle A, B and C.
Let the distance between Seattle and San Francisco be 'c' and [tex]C=21.4[/tex].
Using law of sines, we can set an equation as:
[tex]c^2=1737^2+1858^2-2(1737)(1858)\text{cos}(21.4)[/tex]
Upon taking square root in both sides, we will get:
[tex]c=\sqrt{1737^2+1858^2-2(1737)(1858)\text{cos}(21.4)}[/tex]
Therefore, we can use the expression [tex]\sqrt{1737^2+1858^2-2(1737)(1858)\text{cos}(21.4)}[/tex] can be used to find distance between Seattle, WA, and San Francisco, CA.
Answer:
a
Step-by-step explanation:
Han buys candy at $3.75 a pound. What equation best
represents his total cost (y), if x is the number of pounds
of candy he purchased?
a) x = y + 3.75
b) X = 3.75y
c) y = x + 3.75
d) y = 3.75 x
Answer:
D) y= 3.75x
Step-by-step explanation:
The total cost is y, therefore you set the equation equal to y since you want to find the total cost of candy he purchased.
X is the number of pounds, and the candy is $3.75 each pound.
When you set up the equation, it is
y=3.75x
Which also means: the total cost of the candy depends on how many pounds (which is $3.75 per pound) he buys.
What is the median of 89,99,80,5,90,0,100,95
Answer:
89.5
Step-by-step explanation:
What is the median of 89,99,80,5,90,0,100,95
We should order this from least the greatest.
0, 5, 80, 89, 90, 95, 99, 100
The median is between 89 and 90
median = (89 + 90)/2 = 89.5
The weight of oranges growing in an orchard is normally distributed with a mean
weight of 5 oz. and a standard deviation of 1 oz. Using the empirical rule, what
percentage of the oranges from the orchard weigh between 3 oz. and 7 oz.?
Given that the weight of oranges falls in a normal distribution, the empirical rule states that about 68% of oranges should weigh between 3 oz. and 7 oz., which are one standard deviation away from the mean of 5 oz.
Explanation:The question involves the concept of the empirical rule in statistics. The empirical rule states that for a normal distribution, approximately 68% of data falls within one standard deviation of the mean, 95% falls within two standard deviations, and 99.7% falls within three standard deviations.
In this scenario, the mean weight of the oranges is 5 oz. and the standard deviation is 1 oz. So, oranges that weigh between 3 oz. and 7 oz. fall within 1 standard deviation on either side of the mean. According to the empirical rule, this represents approximately 68% of the data. So, we can conclude that about 68% of the oranges in the orchard weigh between 3 oz. and 7 oz.
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You have 24 seashells and give 8 seashells to your sister. You arrange the rest of the seashells into 4 equal rows. Which steps can you use to find the number of seashells in each row?
Answer:
24-8 = 16 if u divide 16 by 4 u get 4 in each row
Step-by-step explanation:
The temperature outside changed from 92°F to 43°F over a period of seven days. If the temperature changed by the same amount each day, what was the daily temperature change?
A.
49°F
B.
-49°F
C.
7°F
D.
-7°F
Reset Submit
Answer: D
Step-by-step explanation: the temperature changes from 92° to 43°
so 92 - 43 = 49 meaning that the temperature changed 49 degrees in total and if it changed the same amount in the seven days you have to divide 49 by 7 = 7
C is wrong since it did change by 7 but the option to decrease is there and the temperature didn't increase or get warmer but instead decreased or became cooler so it is D
The base of a cylinder has a radius of 9 cm. The cylinder is 12 cm tall. What is the approximate LATERAL area of the cylinder? Use 3.14 and round your answer to the nearest whole number.
Answer:
The lateral area of the cylinder is 678 cm^2 to the nearest whole number
Step-by-step explanation:
Mathematically , the lateral area of a cylinder can be calculated using the formula
A = 2 π r h
where r is the radius = 9cm and h is the height = 12 cm
we are told to use a value of 3.14 for π
Thus the lateral area A is thus = 2 * 3.14 * 9 * 12 = 678.24 which is 678 cm^2 to the nearest whole number
How much does it cost to buy 3 orange buttons if each orange button costs $0.09?
Answer:
$0.27
Step-by-step explanation:
Multiply the cost of one button times the number of button desired
3 * .09 = .27
Answer:
.27
Step-by-step explanation:
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what is 2042.8.8 rounded to the nearest tenth
Answer:
the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up. Example: 38 rounded to the nearest ten is 40. ...
If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down. Example: 33 rounded to the nearest ten is 30.
Step-by-step explanation:
Answer: 2042.9
Step-by-step explanation: Round to the nearest tenths place or the (1 decimal place)
If the number is higher than 5, 6, 7, 8, or 9, round the number up. If not, then do not round it up.
I hope this helps!
Solve for x.
x/7 + 9 = 15
Look at the attached picture ⤴
hope it will help u....:)
The value of x in the equation (x/7) + 9 = 15 is 42.
To solve for x in the equation (x/7) + 9 = 15, you can follow these steps:
Subtract 9 from both sides of the equation:
(x/7) + 9 - 9 = 15 - 9
(x/7) = 6
Multiply both sides of the equation by 7 to isolate x:
7 × (x/7) = 6 ×7
x = 42
Therefore, the solution to the equation is x = 42.
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7° Grade Mathematics' Portfolio Piece
How Many Cupcakes? Task
-
-
--
Betty and Archie, two seniors, sold cupcakes as a fundraiser to
benefit the school's yearbook. The number of cupcakes that
Archie sold can be given as 20 more than a number, x. Betty
sold five fewer cupcakes than twice a number, x. -
A) Write an algebraic expretssion that can be used to represent the
amount of cupcakes that each senior sold.
Archie:
Betty:-
Answer:
Archie: x+20
Betty: 2x-5
Step-by-step explanation:
We are given that The number of cupcakes that Archie sold can be given as 20 more than a number, x.
So, 20 more than x = x+20
So, Archie sold cupcakes = x+20
We are also given that Betty sold five fewer cupcakes than twice a number, x.
So,twice a number, x = 2x
Five fewer cupcakes than twice a number, x. =2x-5
So, Betty sold cupcakes = 2x-5
Hence an algebraic expression that can be used to represent the amount of cupcakes that each senior sold
Archie: x+20
Betty: 2x-5
The area of a pizza is 113 square inches. What would the radius have to be to make that statement true?
Answer:
6 in.
Step-by-step explanation:
[tex]A = r^2\pi[/tex]
[tex]R = \sqrt{\frac{A}{\pi } }[/tex]
[tex]R = \sqrt{\frac{113}{\pi } }[/tex]
[tex]R = \sqrt{36}[/tex]
[tex]R = 6[/tex]
What two numbers does the square root of 2 lie between
Answer:
1 and 2
Step-by-step explanation:
Rewrite the product (22y)(2x) using the Commutative Property of Multiplication.
A. (2y)(22x)
B. (22x)(2y)
C. (2x)(22y)
D. 44xy
The correct option is C.
What is commutative property?
The commutative property is a math rule that says that the order in which we multiply numbers does not change the product.
What is an example of commutative property?The commutative property deals with the arithmetic operations of addition and multiplication. It means that changing the order or position of two numbers while adding or multiplying them does not change the end result. For example, 4 + 5 gives 9, and 5 + 4 also gives 9.
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A piggy bank containing nickels and
dimes contains 60 coins. The total value in
the piggy bank is $4.25. How many of each
coin is there in the piggy bank?
There are 35 nickels and 25 dimes in the piggy bank.
What is the equation?The equation is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are equal.
Let N be the number of nickels in the piggy bank, and let D be the number of dimes. We can set up the following system of equations to represent the given information:
N + D = 60
0.05N + 0.1D = 4.25
The first equation represents the total number of coins in the piggy bank, and the second equation represents the total value of the coins.
To solve this system of equations, we can use the substitution method. First, we solve the first equation for N:
N = 35
Substituting this equation for N into the second equation, we get:
D = 25
Thus, 35 nickels and 25 dimes are in the piggy bank.
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What method can you use to find the area of the composite figure? Select three options.
7 to the second power + 24 to the second power
Answer:
625
Step-by-step explanation:
Simplify the following:
7^2 + 24^2
7^2 = 49:
49 + 24^2
| 2 | 4
× | 2 | 4
| 9 | 6
4 | 8 | 0
5 | 7 | 6:
49 + 576
| 1 | 1 |
| 5 | 7 | 6
+ | | 4 | 9
| 6 | 2 | 5:
Answer: 625
Answer:
it would be 625
Step-by-step explanation:
7 squared is 49 and 24 squared is 576. so if you do 49+576=625
ANSWER ALL FIRST CORRECT ANSWER GETS BRAINLIEST, THANKS AND FIVE STAR!!
Answer:
1. A TUNNEL WITH LEAKS
2. A BIG ELECTRIC BILL
Step-by-step explanation:
H = 60
A = 20
W = 7
S = 26
E = 62
U = 22
B = 100
G = 8
R = 5
T = 0
K = 24
N = 81
C = 90
I = 32
L = 1
There you have it.....
The initial question lacks the specificity needed for a detailed and accurate response. More information on the subject and grade level is required to provide relevant help.
Explanation:Unfortunately, your question isn't clear enough for me to provide a concise and accurate answer. To ensure you get the help you need, please restate your question with more details, specifying the subject and grade level you're referring to. Once I have this information, I can offer you a more structured and detailed response that caters to your academic needs. Also remember, it's vital to review your questions for grammatical errors and make sure they're clear before posting, to ensure you receive the best possible responses.
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Both circles have the same center. What is the area of the shaded region?
17.2 mm
r=12.6 mm
Answer:
2291.1
Step-by-step explanation:
Answer:
2290 mm² or 2289.94 mm²
Step-by-step explanation:
The radius of the outer circle is the sum of the inner radius and the width of the shaded area: 12.6 mm +17.2 mm = 29.8 mm.
The shaded area is the difference between the area of the outer circle and the area of the inner circle. The area of either circle is given by the formula ...
A = πr²
so, the area of the ring is ...
A = π(29.8 mm)² -π(12.6 mm)² = π(888.04 mm² -158.76 mm²)
A = 3.14(729.28 mm²) = 2289.9392 mm²
The area is about 2289.94 mm², which rounds to 2290 mm².
_____
Comment on pi
In the calculation here, we have used the required value of pi. If we use one that is more accurate, we find the area to be about 2291.10 mm².
Kay earns $78,400 per year. She takes a standard deduction of $5,700 and pays tax at a 21% rate. What is the amount of Kay's income tax? Hint: Income Tax = Taxable Income * Tax Rate
Answer:
$15,267
Step-by-step explanation:
Kay earns $78,400 per year and gets a standard deduction of $5,700.
Her taxable income is amount of money that she can pay tax on and that is:
Income - Standard Deduction
= $78,400 - $5,700 = $72,700
She pays tax at a 21% rate, hence, her income tax is:
[tex]\frac{21}{100} * 72,700[/tex]
= $15,267
Her income tax is $15,267.