Answer:
y= -3x+1
Step-by-step explanation:
y=mx+b
find m: (y2-y1)/(x2-x1)
pick any two points: (-1,4) and (0,1)
plug them in: (4-1)/(-1-0)= -3=m
b is the y intercept which is 1=b
plug these into the equation for a line y=mx+b
y=-3x+1
Which equations have the same value of x as Three-fifths (30 x minus 15) = 72? Select three options.
18 x minus 15 = 72
50 x minus 25 = 72
18 x minus 9 = 72
3 (6 x minus 3) = 72
x = 4.5
PLSSS HELP IM SUPER STUCK!!
A group of students were surveyed to find out if they like playing video games on a console/PC or on a phone/tablet. The results of the survey are shown below: 80 students like playing video games on a console/PC 20 students like playing video games on a console/PC but do not like playing on a phone/tablet 90 students like playing video games on a phone/tablet 40 students do not like playing video games on a console/PC Make a two-way table to represent the data and use the table to answer the following questions. Part A: What percentage of the total students surveyed like both playing video games on a console/PC and on a phone/tablet? Show your work and/or explain your thinking. (5 points) Part B: What is the probability that a student who does not like playing video games on a console/PC also does not like playing on a phone/tablet? Explain your answer. (5 points)
I KNOW PART A BUT IM REALLY STUCK ON PART B PLS HELP!!
Part A:
I got the number of kids in the survey which is 130 and I found 70 which is the amount of kids who like playing on a pc/console. I took 130 and 70 and converted it into a fraction 70/130, I simplified it to 7/13 and used a calculator to get my percentage which I rounded and got 53%
Part B:
I drew a table and just focused on column two. I looked at how many people don't like phone or pc and I found that 10 is how many people like phone and not pc, 30 is people who dont like phone or pc, together its 40, so you need to find what the percentage 30 is of 40, or 3/4, I used a calculator and converted it into a percentage and I got 75%
(15 POINTS+ BRAINLIEST)
How do you know if a set of information shows a proportional relationship? Select ALL that apply.
Answer:
(Some textbooks describe a proportional relationship by saying that " y varies proportionally with x " or that " y is directly proportional to x .") This means that as x increases, y increases and as x decreases, y decreases-and that the ratio between them always stays the same.
Step-by-step explanation:
and I know that the second one is the answer I dont know the others
to collect data on the signal strengths in a neighborhood, tracy must drive from house to house and take readings. she has a graduate student, dave, to assist her. tracy figures it would take her eight hours to complete the task working alone, and that it would take dave 12 hours if he completed the task by himself. how long will it take tracy and dave to complete the task together? 3.6 hours 7.2 hours 4.8 hours 6.0 hours
It would take Tracy and Dave approximately 4.8 hours to complete the task together. So, the correct option is C.
To solve this problem, we can use the formula:
time = work / rate
where work is the amount of work to be done (in this case, collecting signal strength data from each house), and rate is the rate at which the work is being done.
Let's start by finding Tracy's and Dave's individual rates:
Tracy's rate: 1 job / 8 hours = 0.125 jobs per hour
Dave's rate: 1 job / 12 hours = 0.0833 jobs per hour
Now, let's find their combined rate when they work together:
Combined rate = Tracy's rate + Dave's rate
Combined rate = 0.125 + 0.0833
Combined rate = 0.2083 jobs per hour
Finally, we can use the formula time = work / rate to find how long it would take them to complete the task together:
time = 1 job / 0.2083 jobs per hour
time ≈ 4.8 hours
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Tanya wants to order 50 pizzas for a party. However, the pizza supplier can deliver only 45 pizzas on the given date. How will you describe the relationship between demand and supply of pizzas? A. Demand is equal to supply. B. Demand is greater than supply. C. Demand is less than supply.
Answer:
B
Step-by-step explanation:
The demand is 50 and the supply is 45. Since 50 > 45 the answer is that the demand is greater than the supply.
Answer:
b
Step-by-step explanation:
A boat sails due south from a port at a steady speed of 9km/h. The wind blows the boat due west at a speed of 3km/h. How far is the boat from the port after one hour?
I need to figure this out with the formula a2 + b2 = c2
We are solving for c2 - the hypotenuse.
Answer:
10
Step-by-step explanation:
a^2+b^2=c^2
9^2+3^2=c^2
81+9=c^2
100=c^2
c=10
The graph shows how a motorboat travels around a lake. What does the graph most likely show?
The speed of the boat increases steadily for 10 minutes and travels at a constant speed after 10 minutes.
Option D is the correct answer.
What is speed?Speed is the ratio of distance and time.
It shows how fast an object is moving at a given time.
We have,
The x-axis can be assumed as 10 minutes for each unit.
Now,
From the graph, we see that the speed is steadily increasing as the time increases from x= 0 to x = 10.
From x = 10, the line on the graph is horizontal this means, the speed is constant.
Thus,
The speed of the boat increases steadily for 10 minutes and travels at a constant speed.
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I WILL GIVE BRAINLIEST!!!
Answer:
x =65
Step-by-step explanation:
You see it is very hard
2 S V II T U
3 S T II V U
7 Definition of parallel lines
8 A parallelogram has two sets of parallel lines. The shape in the picture has two sets of parallel lines, therefore the shape is a parallelogram
Please solve and explain steps I am so lost thank you
Answer: x=1
Step-by-step explanation:
Given: MN || OP, m<MQR = 58-7x, m<QRP = 54-3x
Since we know that lines MN and OP are parallel, we know that m<MQR and m<QRP are equal because of alternate interior angles theorem.
Since those two angles are equation we can create an equation to solve.
58-7x=54-3x
Subtract 54 from both sides, add 7x to both sides
4=4x
Divided by 4
x=1
Hope that helps! :)
Let me know if you need help understanding or a clearer explanation!
please help!! fast!! -Geometry- ** will make you brainliest **
abcd is a parallelogram
Step-by-step explanation:
so yiu gotta like 1 angle to the 2 angle buy thats seprare from the 3 angle to the 4 angle
Noah went into a movie theater and bought 9 drinks and 4 candies, costing a total of $60. Nachelle went into the same movie theater and bought 10 drinks and 2 candies, costing a total of $57.50. Determine the price of each drink and the price of each candy.
Answer:
See below.
Step-by-step explanation:
Let the price of drinks be x and the price of candies be y.
Condition # 1:9x + 4y = 60 --------------------(1)
Condition # 2:10x + 2y = 57.50 --------------(2)
Multiply Eq. (2) by 22(10x + 2y) = 57.50*2
20x + 4y = 115 --------------(3)
Subtract Eq. (3) from (1)9x + 4y - 20x - 4y = 60 - 115
9x - 20x = -55
-11x = -55
11x = 55
Divide both sides by 11x = 55/11
x = $5Put x = 5 in Eq. (1)
9(5) + 4y = 60
45 + 4y = 60
Subtract 45 to both sides4y = 60 - 45
4y = 15
Divide both sides by 4y = 15/4
y = $3.75So, the cost of one drink is $5 and the cost of one candy is $3.75.
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a force of pounds is required to hold a spring stretched 0.4 feet beyond its natural length. how much work (in foot-pounds) is done in stretching the spring from its natural length to 0.9 feet beyond its natural length? $1.8$incorrect2.025
The work done in stretching the spring from its natural length to 0.9 feet beyond its natural length is 3 foot-pounds.
This can be calculated using the equation W = F * d, where W is the work done, F is the force applied, and d is the distance the spring is stretched. In this case, F is 6 pounds and d is 0.5 feet (0.9 feet - 0.4 feet). Thus, W = 6 * 0.5 = 3 foot-pounds.
Force is a concept in physics that describes the influence that can change the motion of an object. Work done is the amount of energy transferred to or from an object when a force acts on it and causes it to move through a distance.
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Correct question:
A force of 6 pounds is required to hold a spring stretched 0.4 feet beyond its natural length.
How much work (in foot-pounds) is done in stretching the spring from its natural length to 0.9 feet beyond its natural length?
3. jonathan drew ed parallel to jh and ab parallel to fg. he says that,
because the line segments are parallel, his design forms two pairs of
similar triangles. is he correct? explain.
Yes, Jonathan is correct. If two lines are parallel, then any line segment drawn between them will create corresponding angles that are congruent.
In this case, since AB is parallel to FG, and JD is parallel to JH, we can see that triangle ABJ is similar to triangle FGJ (since they both have a right angle and share angle J), and triangle ABD is similar to triangle FGD (since they both have a congruent and share angle D). Therefore, Jonathan's design does form two pairs of similar triangles. Jonathan is correct in saying that his design forms two pairs of similar triangles. By drawing line segments ED parallel to JH and AB parallel to FG, he has created corresponding angles that are congruent. In turn, this means that the triangles formed by these parallel line segments are similar by the Angle-Angle (AA) similarity postulate.
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maria has three more than twice as many crayons as elizabeth
Answer:
You did not provide your whole question?
Step-by-step explanation:
A ball thrown horizontally from an apartment balcony hits the ground in 5 seconds. if the horizontal velocity of the ball is doubled, how long will it take to hit the ground? a. 2.5 seconds b. 5.0 seconds c. 7.5 seconds d. 10 seconds e. 12 seconds
Still 5 seconds.
(Assuming the Earth around that building is flat.
1. Which of the following is INCORRECT:
Independent random samples arise when ...
a. one random sample is split into groups differing by an observed feature
b. the individuals in a sample are randomly assigned to experimental groups
c. data is recorded repeatedly on a random sample of individuals
d. random samples are selected separately
2. The margin of error of a confidence interval about the difference between the means of two populations is equal to
a. half the width of the confidence interval
b. twice the width of the confidence interval
c. the width of the confidence interval
d. 1.5 times the width of the confidence interval
1. Independent random samples arise when one random sample is split into groups differing by an observed feature is incorrect.
2. The margin of error of a confidence interval about the difference between the means of two populations is equal to half the width of the confidence interval.
1. Independent random samples arise when individuals in a sample are randomly assigned to experimental groups, data is recorded repeatedly on a random sample of individuals, or random samples are selected separately. The statement that one random sample is split into groups differing by an observed feature does not accurately describe independent random samples.
2. The margin of error in a confidence interval represents the range of values within which the true population parameter is likely to fall. It is calculated by taking half of the width of the confidence interval. Therefore, the correct answer is that the margin of error is equal to half the width of the confidence interval.
In summary, the incorrect statement is that independent random samples arise when one random sample is split into groups differing by an observed feature. The margin of error of a confidence interval about the difference between the means of two populations is equal to half the width of the confidence interval.
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Give the general gas equation for an ideal gas and deduce what it predicts about the volume of a gas at 0kelvin
The general gas equation for an ideal gas is PV=nRT, where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is temperature.
This equation relates the pressure, volume, temperature, and amount of gas in a system. It states that the product of pressure and volume is directly proportional to the number of moles of gas, gas constant, and temperature.
At 0 Kelvin (also known as absolute zero), the temperature in the ideal gas equation becomes zero. Therefore, the equation becomes PV=nR(0), which simplifies to PV=0. This indicates that the product of pressure and volume of an ideal gas at 0 Kelvin is zero. However, this does not mean that the volume of an ideal gas becomes zero at 0 Kelvin. This prediction only holds true if the gas behaves ideally, which is not the case for all gases. In reality, many gases exhibit deviations from ideal behavior at low temperatures and high pressures. Moreover, the prediction of the volume of an ideal gas at 0 Kelvin is based on the assumption that the gas molecules occupy zero volume, which is not true in reality. Therefore, this prediction is only a theoretical idealization and cannot be achieved in practice.
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How does the solution to a system of equations compare to the solution of a system of inequalities?.
A collection of equations with the same variables is known as a system of equations. The only difference is that you're working with inequalities rather than equations in a system of inequalities.
What are inequalities?
An inequality in mathematics is a relation that compares two numbers or other mathematical expressions in an unequal way. The majority of the time, size comparisons between two numbers on the number line are made.
A system of equations has one solution for each variable, whereas a system of inequalities has a range of possible values for each variable.
Set up the equations as follows:
ax + by = c
dx +ey = f
Let the inequitable system exist:
ax + by <c
dx +ey > f
The same technique, such as graphing, substitution, and elimination, can be used to solve both systems.
But there's a difference because:
A system of equations can only have one solution for each variable, whereas a system of inequalities can have any number of solutions for each variable.
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Choose the correct label for the solution to each system of equations from the drop-down menus.
When a plane passes through the vertex of a double-napped cone, the intersection is a?
When a plane passes through the vertex of a double-napped cone, the intersection is a degenerate conic section.
A double-napped cone is formed by rotating a straight line around another straight line that is parallel to it.
The intersection of a plane with a double-napped cone is referred to as a conic section. A degenerate conic section is formed when a plane intersects a double-napped cone at the vertex.
Thus, when a plane passes through the vertex of a double-napped cone, the intersection is a degenerate conic section.
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A forward pass is used to determine the late start and late finish times. A. True B. False
Answer:
False
Step-by-step explanation:
what is s for the following function
Answer:
S = 3
S = 5
S = 7
S = 9
Step-by-step explanation:
t = 3s + 2
when t = 11
11 = 3s + 2
11 – 2 = 3s
9 = 3s
s = 3
t = 3s + 2
when t = 17
17 = 3s + 2
17 – 2 = 3s
15 = 3s
s = 5
t = 3s + 2
when t = 23
23 = 3s + 2
23 – 2 = 3s
21 = 3s
s = 7
t = 3s + 2
when t = 29
29 = 3s + 2
29 – 2 = 3s
27 = 3s
s = 9
I HOPE ALL THIS HELPS
RATE AS BRAINLIEST PLS
The coordinates of the endpoints of PQ are P( – 12,7) and Q( – 4, – 9). Point R is on PQ and divides it such that PR:QR is 3:5
The coordinates of R are (-8,-1). To find the coordinates of R, we first need to find the length of PQ.
Using the distance formula, we have:
d(P,Q) = √((x2-x1)² + (y2-y1)²)
= √((-4-(-12))² + (-9-7)²)
= √(8² + (-16)²)
= √(320)
= 8 √(5)
Since PR:QR is 3:5, we can set up the following equation:
d(P,R)/d(R,Q) = 3/5
Let the coordinates of R be (x,y). We can use the midpoint formula to find the coordinates of the midpoint of PQ, which is also the coordinates of the point that divides PQ into two parts in the ratio of 3:5.
Midpoint of PQ = ((-12-4)/2, (7-9)/2) = (-8,-1)
Using the distance formula again, we can find the distance between P and R:
d(P,R) = (3/8) d(P,Q)
= (3/8) (8 √(5))
= 3 √(5)
Now we can use the ratio PR:QR = 3:5 to find the distance between R and Q:
d(R,Q) = (5/3) d(P,R)
= (5/3) (3 √(5))
= 5 √(5)
Finally, we can use the midpoint formula to find the coordinates of R:
x = (-12 + (3/8) (8))/2 = -8
y = (7 + (-1))/2 = 3
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Complete Question:
The coordinates of the endpoints of bar (PQ) are P(-12,7) and Q(-4,-9). Point R is on bar (PQ) and divides it such that PR:QR is 3:5. What are the coordinates of R ?
Find the value of x, if (16)245 = (32)x.
Answer:
x = 245/2 (In exact form)
and,
x = 122.5 (In decimal form)
or,
x = 1221/2 (In mixed number form)
Step-by-step explanation:
As inflation increases, the value of the dollar decreases at the same rate. The value of the dollar after t months of inflation can be found by raising the difference of 1 and the rate of inflation, r, to the power of t. If the current rate of inflation is 10%, what will the value of the dollar, d, be after 7 months? Round to the nearest cent.
Answer: 1.428571428571429
Step-by-step explanation:
in a certain state, 60% of all adults have high blood pressure, 45% have high cholesterol and 20% have both high blood pressure and high cholesterol. what is the probability that a randomly selected adult from the state has high blood pressure but not high cholesterol?
The probability that a randomly selected adult from the state has high blood pressure but not high cholesterol is 0.40 or 40%.
To find the probability that a randomly selected adult from the state has high blood pressure but not high cholesterol, we need to subtract the probability of having both high blood pressure and high cholesterol from the probability of having high blood pressure.
Using set notation, let A be the event of having high blood pressure and B be the event of having high cholesterol. Then, the probability of having both high blood pressure and high cholesterol can be written as
P(A ∩ B)= 0.20
The probability of having high blood pressure can be written as
P(A) = 0.60
Therefore, the probability of having high blood pressure but not high cholesterol is:
P(A) - P(A ∩ B) = 0.60 - 0.20 = 0.40
Thus, the probability that a randomly selected adult from the state has high blood pressure but not high cholesterol is 0.40 or 40%.
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a is 60 miles from b. a starts for b at 20 mph, and b starts for a at 25 mph. when will a and b meet?
The problem describes a scenario in which two objects, A and B, start moving towards each other from different locations and speeds. Object A starts from point A, which is 60 miles away from object B, at a speed of 20 mph, while object B starts from point B at a speed of 25 mph.
To solve this problem, we can use the formula Distance = Speed x Time. We know that the total distance between A and B is 60 miles and we want to find the time at which they meet. Let's call that time "t". Let's also assume that they meet at some point "x" miles away from A. Then, the distance that A travels is 60 - x and the distance that B travels is x. Using the formula, we can set up an equation:
Distance A + Distance B = Total Distance
(60 - x) + x = 60
Simplifying this equation, we get:
60 - x + x = 60
60 = 60
This equation is always true, so it doesn't give us any information about when A and B will meet. However, we can use the formula Distance = Speed x Time to set up another equation that relates the distance and speeds of A and B to the time they travel before meeting:
Distance A = Speed A x Time
Distance B = Speed B x Time
Substituting the distances and speeds we know, we get:
(60 - x) = 20t
x = 25t
We can use either equation to solve for t, but let's use the second equation. Substituting x = 25t, we get:
(60 - 25t) = 20t
Simplifying and solving for t, we get:
60 = 45t
t = 4/3
Therefore, A and B will meet after traveling for 4/3 hours, or 1 hour and 20 minutes.
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. suppose f(x) is a function, and f 0 (3) = 5. can we conclude that f(x) is continuous at x = 3? why or why not?
According to the question we cannot conclude that f(x) is continuous at x = 3 without additional information about the function.
Unfortunately, we cannot conclude that f(x) is continuous at x = 3 based solely on the information given.
To determine if a function is continuous at a specific point, we need to check three conditions:
1. The function must be defined at the point x = 3. In this case, we know that f 0 (3) = 5, which means that the function is defined at x = 3.
2. The limit of the function as x approaches 3 must exist. Without any further information about the function, we cannot determine whether or not this condition is met.
3. The limit of the function as x approaches 3 must equal the value of the function at x = 3. Again, we cannot determine whether or not this condition is met based solely on the given information.
Therefore, we cannot conclude that f(x) is continuous at x = 3 without additional information about the function.
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What percent of 12 is 24
Answer:
200%
Step-by-step explanation:
12 as a whole would be 100%. if you wanted to get to 24 (which would be double) you'd need to double the percentage! hope this helps
Question Factor −12 out of −12x+6.
The factorization of of −12x+6 is 6(-2x + 1).
What is factorization?Factorization simply means writing if a number as a product of several factors. It is also the breaking or the decomposition of an entity.
In this case, -12x + 6 will be illustrated thus. It should be noted that the common factor between the numbers is 6. This will be:
= -12x + 6
= 6(-2x + 1)
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