Question 1:
Answer: (1,2)
2-0 / 1-0 = slope of 2
Question 2:
Answer: (-2,-2)
-3 - (-2) / -3 - (-2)
= -3 + 2 / -3 + 2
= slope of 1
Answer:
first question is (1,2)
second question is (-2,-2)
Henry has 30 coins. He has 1 fewer pennies than dimes. he has 2 fewer nickels than dimes. how many dimes does Henry have?
A : 3
B: 9
C: 11
D: 27
Answer:
C 11
Step-by-step explanation:
you have 1 less penny than dimes which is 10 pennies
you have 2 less nickels than dimes which is 9
11+10+9=30
WILL GIVE BRAINLIEST!! Priscilla received 240 votes in the election for student council president. That was 60% of the students who voted in the election. How many students voted in the election? A) 400 students B) 300 students C) 185 students D) 455 students
Answer:
A)400 students
Step-by-step explanation:
I WILL GIVE 15 POINTS IF YOU ANSWER PROPERLY I DO NOT UNDERSTAND IT PLEASE HELP
Answer:
17.1 in2
Step-by-step explanation:
Find the height of a triangle with an area (A) of 35 square inches and
base (b) of 7 inches. Use the formula for the area of a triangle,
A = 1/2 bh
hb=10in
b Base
7
in
A Area
35
in²
Using the formula
A=hbb
2
Solving forhb
hb=2A
b=2·35
7=10in
Choose SSS, SAS, or neither to compare
these two triangles.
B
SSS
SAS
neither
Answer:
neither, i think
There is No Congruence between Two Triangles.
What is Congruence Rule?If all three corresponding sides and all three corresponding angles are equal in size, two triangles are said to be congruent. Slide, twist, flip, and turn these triangles to create an identical appearance. If moved, they coincide with one other.
Given:
By seeing Two Triangles, We have two sides Equal.
But, there is no third part of Congruence here.
Hence, there is No Congruence between Two Triangles.
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what is the measure of angle A?
Answer:
Step-by-step explanation:
138° - 80° = 58°
Alan has a guessing game on his computer.
He estimates that the probability of winning each game is 0.35
Alan decides to play 20 of these games.
How many of these games should he expect to win?
Answer:7
Step-by-step explanation:
100/20 = 5
35/5 = 7
need this asap will give brainliest!
Answer: The height of the triangle DEF is 3.3
Step-by-step explanation:
To start off, Triangle ABC is similar to DEF.
This means that these triangles will share the same angles, so their sides will correspond. The only thing different about these triangles, is their side's ratio in size.
With this in mind, using proportions will help solve this problem.
You can set up a proportion for this problem like this:
\(\frac{3}{2} =\frac{5}{x}\)
where 3 is side AC, 2 is height BC, 5 is side DF, and x is the unknown height.
We need to solve for x, and by cross multiplying you will get,
3x = 10
now divide both sides by 3
\(x=\frac{10}{3}\)
and then simplify to decimals rounded to the nearest tenth the answer would be 3.3.
So, the height of the triangle DEF is 3.3
M<7=100 find measure of <11
Answer:i think its 115 degres
Step-by-step explanation:
The purpose of an operational definition is to ____. provide a method for analyzing data related to a hypothetical construct provide a method for integrating a construct into a theory provide a definition and a method for measuring a concept describe the relationship between a construct and theory
Answer:
its A
Step-by-step explanation:
i think
Last question pls help then i will give away al points pls help.
Answer: i give up typing essays ill just give it to you straight azure clicks per second is 8.5 or 17/2
bronze click per second is 9.5 38/4
crimsons time is 2.28 i guessed the closest and used a calulator good thing i learned this recently
clicks for desert is 34.9 or 35 not too clear but 34.9 is closer but you can choose i got this from guesing the division and i got 35/4.2 and 34.9/4.2
emeralds time is 0.40 3/.40 or 3/0.40
clicks for the last one or fuscia is 6 6/0.70 is well 8 gawd dammit you made me rite anotha essay
answer the following questions
and get 20 points
Answer:
3/7 ; -7
Step-by-step explanation:
1)
(7-4)/(10-3)
3/7
2) -7 because is the number that multiplies x
The numbers 38, 79, 17, 43, 74, 96, and 87 are re-arranged so that starting with the second number, the tens digit of each number is equal to the units digit of the previous number. What is the fourth number in this new list?
Answer:
38
Step-by-step explanation:
Sequential pairs will be ...
38 - 87
79 - 96
17 - 74 or 79
43 - 38
74 - 43
96 - (none)
87 - 74 or 79
We notice that 17 has no preceding number. It must be first in the list. 79 cannot be second, because that skips a bunch of numbers. The sequence appears to be ...
17 - 74 - 43 - 38 - 87 - 79 - 96
The 4th number in the list is 38.
TRUE/FALSE. if x=ye^y then the explicit differentiation to find dx/dy, and the implicit differentiation to find dy/dx yield consistent results.
The explicit differentiation and implicit differentiation both yield consistent results so that the statement is true.
If we have an equation x = ye^y, we can find dx/dy using explicit differentiation as follows:
x = ye^y
Differentiating both sides with respect to y:
dx/dy = (d/dy) (ye^y) = e^y + ye^y
On the other hand, to find dy/dx using implicit differentiation, we differentiate both sides of the equation x = ye^y with respect to x:
d/dx (x) = d/dx (ye^y)
1 = (dy/dx) e^y + y (d/dx) (e^y)
1 = (dy/dx) e^y + y e^y (dy/dx)
(dy/dx) (e^y + y e^y) = 1
dy/dx = 1 / (e^y + y e^y)
We can see that these two expressions for the derivatives, dx/dy and dy/dx, are consistent. We can substitute y = ln(x) in the expression for dy/dx to get:
dy/dx = 1 / (e^(ln(x)) + ln(x) e^(ln(x))) = 1 / (x + ln(x))
We can verify that this is equal to dx/dy by substituting y = ln(x) in the expression for dx/dy:
dx/dy = e^y + ye^y = e^(ln(x)) + ln(x) e^(ln(x)) = x + ln(x)
Therefore, we can conclude that the explicit differentiation and implicit differentiation both yield consistent results.
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Write an equation that is parallel to y = 9x and goes through the point (1,5).
Answer:
y=9x-4
OR
y-5=9(x-1)
(both are correct and equal)
Step-by-step explanation:
Parallel means slope is the same, so the slope of the equation should be 9.
Using point slope form:
\(y-5=9(x-1)\)
Which would be:
\(y=9x-4\)
in slope intercept form.
Hey there!
Answer:
y = 9x - 4
Step-by-step explanation:
The other guy already gave the explanation soo... but I got the same answer
Good luck!! :D
draw an appropriate tree diagram, and use the multiplication principle to calculate the probabilities of all the outcomes. hint [see example 3.]there is a 60% chance of rain today and a 60% chance of rain tomorrow. assume that the event that it rains today is independent of the event that it rains tomorrow. what is the probability that there will be no rain today and no rain tomorrow?
An appropriate tree diagram.
/ \
/ \
0.6 / \ 0.4
/ \
R NR
/ \ / \
/ \ / \
0.6 0.4 0.6 0.4
R NR R NR
Where R represents rain and NR represents no rain.
By using the multiplication principle, we can calculate the probabilities of all the outcomes by multiplying the probabilities along each path. The probability of there being no rain today and no rain tomorrow is the probability of following the path NR-NR, which has a probability of
P(NR-NR) = P(NR|NR) * P(NR) = 0.4 * 0.4 = 0.16
Hence, the probability that there will be no rain today and no rain tomorrow is 0.16 or 16%.
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help me pleaseee ill give brainliest
Answer:
G. 9/24
the answer is unsimplified so It looks greater
if there are 300 calories in 100 g of a certain food, how many calories are there in a 30 g portion of food
Answer:
90 calories
Step-by-step explanation:
Calories : quantity of food
there are 300 calories in 100 g of a certain food
300 calories : 100 g food
how many calories are there in a 30 g portion of food
Let x = number of calories
x calories : 30 g food
Equate both ratios
300 calories : 100 g food = x calories : 30 g food
300/100 = x/30
300 * 30 = 100 * x
9000 = 100x
x = 9000/100
x = 90
x = number of calories = 90 calories
1l) HAO WENT TO A HOBBY SHOP AND SAW A DISPLAY OF TOY TRAINS. THE SIGN IN FRONT OF
THE DISPLAY SAID THAT THE TOY TRAINS WERE A REPLICA OF THE LONG ISLAND RAILROAD
TRAINS. HAO ESTIMATED THAT ONE OF THE RAILROAD CARS WAS APPROXIMATELY 15
INCHES LONG AND 4 INCHES WIDE. THE SIGN IN FRONT OF THE DISPLAY STATED
"SCALE- 2 /9".
WHAT IS THE LENGTH OF THE RAILROAD CAR ON HE LONG ISLAND RAILROAD?
WHAT IS THE WIDTH OF THE LONG ISLAND RAILROAD CAR?
Answer:
Length = \(57.5\ \text{inches}\)
Width = \(18\ \text{inches}\)
Step-by-step explanation:
The scale of the toy train is \(\dfrac{2}{9}\)
So, the dimensions of the toy train is \(\dfrac{2}{9}\) times the actual dimensions of the train.
The dimensions of actual train is \(\dfrac{1}{\frac{2}{9}}=\frac{9}{2}\) times the toy train's dimensions.
Length
\(15\times \dfrac{9}{2}=57.5\ \text{inches}\)
Width
\(4\times \dfrac{9}{2}=18\ \text{inches}\)
The length of the railroad car on the long island railroad is 57.5 inches.
The width of the railroad car on the long island railroad is 18 inches.
In your reservoir, you have a production well which flows for 48 hours at 200 STB/day, and then shut-in for 24 hours. The following additional data are given : Pi = 3100 psi Ct = 15x10^-6 psi^-1 Bo = 1.3 bbl/STB ϕ = 15% μ=1.2 cp K = 45 md and h = 60 ft
a-) Calculate the pressure in this production well at 12 hours of shut in
b-) Explain how can you use superposition in time to analyze a pressure build-up test.
a) To calculate the pressure at 12 hours of shut-in:
substitute the given values into the pressure buildup equation and solve for P(t=12).
b) Superposition in time is used in pressure buildup analysis by adding or summing the responses of multiple transient tests to analyze and interpret reservoir behavior and properties.
We have,
a) To calculate the pressure in the production well at 12 hours of a shut-in, we can use the equation for pressure transient analysis during shut-in periods, known as the pressure buildup equation:
P(t) = Pi + (Q / (4πKh)) * log((0.14ϕμCt(t + Δt)) / (Bo(ΔP + Δt)))
Where:
P(t) = Pressure at time t
Pi = Initial reservoir pressure
Q = Flow rate
K = Permeability
h = Reservoir thickness
ϕ = Porosity
μ = Viscosity
Ct = Total compressibility
t = Shut-in time (12 hours)
Δt = Time since the start of the flow period
Bo = Oil formation volume factor
ΔP = Pressure drop during the flow period
Given:
Pi = 3100 psi
Q = 200 STB/day
K = 45 md
h = 60 ft
ϕ = 15%
μ = 1.2 cp
Ct = 15x10^-6 psi^-1
Bo = 1.3 bbl/STB
t = 12 hours
Δt = 48 hours
ΔP = Pi - P(t=Δt) = Pi - (Q / (4πKh)) * log((0.14ϕμCt(Δt + Δt)) / (Bo(ΔP + Δt)))
Substituting the given values into the equation:
ΔP = 3100 - (200 / (4π * 45 * 60)) * log((0.14 * 0.15 * 1.2 * 15x\(10^{-6}\) * (48 + 48)) / (1.3 * (3100 - (200 / (4π * 45 * 60)) * log((0.14 * 0.15 * 1.2 * 15 x \(10^{-6}\) * (48 + 48)) / (1.3 * (0 + 48))))))
After evaluating the equation, we can find the pressure in the production well at 12 hours of shut-in.
b) Superposition in time is a principle used in pressure transient analysis to analyze and interpret pressure build-up tests.
It involves adding or superimposing the responses of multiple transient tests to simulate the pressure behavior of a reservoir.
The principle of superposition states that the response of a reservoir to a series of pressure changes is the sum of the individual responses to each change.
Superposition allows us to combine the information obtained from multiple tests and obtain a more comprehensive understanding of the reservoir's behavior and properties.
It is a powerful technique used in reservoir engineering to optimize production strategies and make informed decisions regarding reservoir management.
Thus,
a) To calculate the pressure at 12 hours of shut-in:
substitute the given values into the pressure buildup equation and solve for P(t=12).
b) Superposition in time is used in pressure buildup analysis by adding or summing the responses of multiple transient tests to analyze and interpret reservoir behavior and properties.
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Please answer CORRECTLY !!!!!! Will mark BRAINLIEST !!!!!!!!!!!!!!
Answer:
38
Step-by-step explanation:
Find the values of each function.
f(-9)= 4
g(6)=6
Then plug them in.
-1 x 4 + 7 x 6
-4+42
38!
Woof Chow Dog Food Company believes that it has a market share of 25 percent. It surveys n = 100 dog owners and ask whether or not Woof Chow is their regular brand of dog food, and 23 people say yes. Based upon this information, what is the critical value if the hypothesis is to be tested at the 0.05 level of significance?
The critical value for the 0.05 level of significance is k = 21.
To find the critical value, we can use the binomial distribution. The binomial distribution models the number of successes in n independent Bernoulli trials, each with probability p of success. In this case, the number of successes is the number of dog owners who say Woof Chow is their regular brand, and the number of trials is n = 100. The null hypothesis is that the true market share of Woof Chow is 25%, and the alternative hypothesis is that it is not 25%.
We can use the binomial cumulative distribution function (CDF) to find the critical value. The CDF gives the probability of getting k or fewer successes in n trials, given a probability of success p. The critical value is the smallest value of k such that the CDF at k is greater than or equal to 1 - alpha, where alpha is the level of significance. In this case, alpha = 0.05.
So, we want to find the smallest k such that:
P(X <= k) >= 1 - 0.05
where X is a random variable representing the number of dog owners who say Woof Chow is their regular brand. We can use a binomial calculator or a software package to calculate the binomial CDF, or we can use a table of critical values for the binomial distribution.
The critical value for the 0.05 level of significance is k = 21. This means that if the true market share of Woof Chow is 25%, then the probability of getting 23 or more dog owners who say Woof Chow is their regular brand is less than 0.05. Since the observed number of dog owners who say Woof Chow is their regular brand is 23, which is greater than 21, we can reject the null hypothesis that the true market share is 25%.
This means that based on the survey results, we cannot conclude that Woof Chow has a market share of 25%. The survey results suggest that Woof Chow may have a market share that is greater than 25%.
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Polly is an artist, and she sells posters at a local café. When she sells x posters, she makes f(x) dollars.
What does f(5)=10 tell you?
The expression f(5)=10 tells us that if Polly is an artist and sells posters at a local cafe then it means that Polly makes 10 dollars when she sells 5 posters.
According to the question,
We have the following information:
Polly sells x posters then she makes f(x) dollars.
We have the following expression:
f(5) = 10
So, it simply means that in place of x in f(x) we have f(5) then we have 5 in place of x.
f(x) is the amount made in dollars. So, the total amount Polly made is 10 dollars.
Hence, the expression f(5) = 10 clearly states that Polly sold 5 posters as an artist and made 10 dollars out of it.
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true or false: for time series data sets, the time at which each observation is made is important; however, that is not the case for cross-sectional data. true
The statement is true. The timing of observations is crucial for time series data, while it is not significant for cross-sectional data.
For time series data sets, the time at which each observation is made is crucial. Time series data involves collecting observations over a specific time period, where the order and timing of the observations hold significance. Time series data allows for the analysis of trends, patterns, and changes over time.
On the other hand, for cross-sectional data, the time at which each observation is made is not important. Cross-sectional data involves collecting observations at a single point in time, capturing a snapshot of different entities or individuals at that particular moment. The focus is on comparing different entities or variables, rather than analyzing changes over time.
Therefore, the statement is true. The timing of observations is crucial for time series data, while it is not significant for cross-sectional data.
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someone mow 2 lawns the first lawn is 7 feet long and 3 feet width the area of the second lawn is 4 times as big but has the same width as the first. what is the length of the second lawn
The correct value of length of the second lawn is 28 feet.
Let's denote the length of the second lawn as L2.
According to the given information, the first lawn has a length of 7 feet and a width of 3 feet. Therefore, the area of the first lawn is:
Area1 = length1 * width1
Area1 = 7 feet * 3 feet
Area1 = 21 square feet
The second lawn is stated to have an area 4 times as big as the first lawn but with the same width. Therefore, we can set up the following equation:
Area2 = 4 * Area1
Substituting the value of Area1, we have:
Area2 = 4 * 21 square feet
Area2 = 84 square feet
The area of a rectangle is given by the formula:
Area = length * width
Since the width of the second lawn is the same as the first (3 feet), we can rearrange the formula to solve for the length:
length2 = Area2 / width2
length2 = 84 square feet / 3 feet
length2 = 28 feet
Hence, the length of the second lawn is 28 feet.
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Suppose an object is launched from ground level directly upward at 57.4 f/s Write a function to represent the object’s height over time.
Answer: p(t) = (-16 ft/s^2)*t^2 + (57.4 ft/s)*t
Step-by-step explanation:
We can suppose that the only force acting on the object is the gravitational force, then the acceleration of the object will be equal to the gravitational acceleration.
Then we can write:
a(t) = -32 ft/s^2
Where the negative sign is because this acceleration is downwards.
Now, to get the vertical velocity of the object, we need to integrate over time to get:
v(t) = (-32 ft/s^2)*t + v0
where t represents time in seconds and v0 is the constant of integration, and in this case, is the initial vertical velocity.
In this case, the initial velocity is 57.4 ft/s upwards, then the velocity equation is:
v(t) = (-32 ft/s^2)*t + 57.4 ft/s
To get the position equation we need to integrate over time again, to get:
p(t) = (1/2)*(-32 ft/s^2)*t^2 + (57.4 ft/s)*t + p0
Where p0 is the initial height of the object, as it was launched from the ground, then the initial position is p0 = 0ft.
then the position equation (that is the function that represents the height of the object as a function over time) is:
p(t) = (1/2)*(-32 ft/s^2)*t^2 + (57.4 ft/s)*t
p(t) = (-16 ft/s^2)*t^2 + (57.4 ft/s)*t
What is the slope of the line shown below?
Answer:
Step-by-step explanation:
What is the best way to solve this?
Answer:
20+20+20=60
20+5+5=30
5-2=3
1+(20*5)=100+1=101
Step-by-step explanation:
Hope it helps :)
Answer:
you do order of operations
Step-by-step explanation:
(1,2), (-1.-4)
please write the slope-intercept form of the equation for the
line
The slope-intercept form of the equation of the line is `y = 3x - 1`.
Given the coordinates of the two points (1,2), and (-1,-4)
The slope of the line is calculated by the formula, `slope = (y₂ - y₁)/(x₂ - x₁)`
Where (x₁, y₁) = (1, 2) and
(x₂, y₂) = (-1, -4).
The slope is given by `( -4 - 2 ) / ( -1 - 1 ) = -6/-2
= 3`
Now we use point-slope form which is given by the formula,
`(y - y₁) = m(x - x₁)`
Where m is the slope of the line and (x₁, y₁) is the given point. Plug in the values of slope and (x₁, y₁) in the formula of the point-slope equation of the line.
(y - 2) = 3(x - 1)
Simplify the above equation to slope-intercept form by moving the constant to the right-hand side.
(y - 2) = 3(x - 1)y - 2
= 3x - 3
Adding 2 to both the sides, y = 3x - 1
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(9,−7) after a dilation by a scale factor of 4 centered at the origin?
The image of the coordinates after a dilation of (9, −7) by a scale factor of 4 centered at the origin include the following: (36, -28).
What is dilation?In Geometry, dilation can be defined as a type of transformation which typically changes the size of a geometric object, but not its shape. This ultimately implies that, the size of the geometric object would be increased or decreased based on the scale factor used.
Next, we would have to dilate the coordinates of the preimage (9, -7) by using a scale factor of 4 centered at the origin as follows:
Coordinate A (9, -7) → Coordinate A' (9 × 4, -7 × 4) = Coordinate A' (36, -28).
In conclusion, the coordinates of the image after a dilation are (36, -28).
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