The solution is Option A.
The equation which has a constant of proportionality k = 7 is 4y = 28x
What is Proportion?
The proportion formula is used to depict if two ratios or fractions are equal. The proportion formula can be given as a: b::c : d = a/b = c/d where a and d are the extreme terms and b and c are the mean terms.
The proportional equation is given as y ∝ x
And , y = kx where k is the proportionality constant
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Given data ,
Let the equation be represented as A
Now , the value of A is
The proportional equation is given as y ∝ x
And , y = kx where k is the proportionality constant
Now , the equation is
4y = 28x
On simplifying the equation , we get
Divide by 4 on both sides of the equation , we get
y = 28x/4
y = 7x
y = 7x is of the form y = kx where the value of k is 7
Therefore, the value of k is 7
Hence , the value of proportionality constant is 7
To learn more about proportion click :
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IS THIS RIGHT??? IF THIS ISNT THEN PLEASE HELP ME!!!!!!
Answer: Which question?
On Saturday, Lukas drove 4x – 5 miles. On Sunday, he drove 3x – 10 miles. What is the difference in miles driven?
Step-by-step explanation:
4x-5-(3x-10)=4x-5-3x+10=x+5 miles! Hopes This Helps!
Answer:
4x-5-(3x-10)=4x-5-3x+10=x+5 miles
Step-by-step explanation:
i know because i did this
Solve: y + x = 3
y = 1.5x + 1
Solve: y = 1.4x + 2
y = 3.4x - 2
HELP PLEASEEEE!!!!!!!!!!
study -----------------
Which ones are correct about the graph?
I think its number 5, sorry if im wrong
Jada volunteers at the animal shelter. She divided 5 cups of cat food equally to feed 20 cats. Each cat received x cups of food.
Answer choices:
x + 5 = 20
x = 20 + 5
5x = 20
x + 20 = 5
520 = x
20x = 5
select the equation that represents the problem let x represent the unknown number
Answer:
D
Step-by-step explanation:
Answer: D is the answer
Step-by-step explanation:
Which of the following graphs represents a function?
Answer:
the last one
Step-by-step explanation:
Write the equation of the line in fully simplified slope-intercept form.
Answer:
y=-1/2x-1
Step-by-step explanation:
the slope intercept form is y=mx+b
m=slope
b=y intercept (where the line crosses the y axis)
to find slope you do rise over run or rise/run
the rise of you slope is -1, and the run of your slope is 2, meaning your slope is -1/2
the line crosses the y axis at point -1
plug what you find into the slope intercept form, and you get y=-1/2x-1
A landscape supply business $30 to deliver mulch. The cost of the mulch is $23 per cubic yard. Write and solve a linear equation to find the cost of having 8 cubic yards of mulch delivered to a site.
Can someone help me with this? (ill be asking more of these questions soon♀️)
create a table of values for Jacksons situation described above
(Non proportional relationships)
Answer:
5)0
6)15
7)30
8)45
9)60
10)75
Help thank you
Xxxxxxx
[(23 × 2.5) , 1 2] + 120
Please solve
Aisha measures the length of a sheet of paper and finds that it is 29 cm long. The label on the package indicates that the paper length is 32 cm. Calculate the percentage error in the measurement.
Answer:
just do the step by step and you'll probably get it because it's quite simple but hard for me to explain so just read this!
Step-by-step explanation:
In making any measurement, the chances are that our results will not be absolutely accurate. We can often compare our results with some standard or accepted value to see how closely they agree. But how much error can be allowed before the result becomes meaningless?
As you may guess, the amount of error that is acceptable varies with the situation. Suppose you measure the distance on a map between your Scarsdale and Mamaroneck and you get a result of 5 miles. If the actual distance is 5 1/2 miles, the chances are this error will have no effect on the trip between the two towns. But if the same degree of error existed in the calculations used to send astronauts to the moon, those people would be in big trouble!
Percentage Error = measured value - accepted value x 100%
accepted value
Suppose, you measured the length of a table and obtained a measurement of 202 cm. A friend also measures the table and obtains a result of 198 cm. To calculate the percentage error in each of the measurements, you need to know the "correct' or “accepted value” of the length of the table. After consulting the manufacturer’s catalog, you find that the table's length is listed as 200 cm in length. This will be used as the accepted value in our calculation.
The calculations of percentage error for the two measurements are shown below. Both measurements show an error of 1%. Your friend has made a measurement which is on the low side of the accepted value and is therefore, negative. You, on the other hand, have made an error on the high side of the accepted value and it is positive.
I dont know the answer but I hope this helped!
(sorry for the inconvenience)
1. What is the probability of rolling a 4 on a number cube and flipping tails on a coin?
2. Event A: Spinner #1 lands on red.
Event B: Spinner #2 lands on yellow.
3. Jake rolls two number cubes. What is the probability that both numbers are greater than 4?
4. A bag has 2 red marbles, 1 blue marble and 4 gold marbles. What is the probability of drawing two gold marbles, if the first marble is replaced after it is drawn?
5.A bag held 3 white marbles, 1 orange marble, and 2 green marbles. Anna drew a white marble and did not replace it. What is the probability of drawing a green marble next?
IF YOU DONT KNOW THE ANSWER DONT ANSWER!! ANSWER ALL QUESTIONS
Answer:
A, A, A, B, DStep-by-step explanation:
1.
P(A) = 1/6, P(B) = 1/2
P(A and B) = 1/6*1/2 = 1/12
2.
P(A) = 1/6
P(B) = 1/6
P(A and B) = 1/6*1/6 = 1/36
3.
P(A) = 2/6 = 1/3
P(B) = 1/3
P(A and B) = 1/3*1/3 = 1/9
4.
P(gold) = 4/7 for each
P(2 golds) = 4/7*4/7 = 16/49
5.
Remaining marbles:
2 white, 1 orange and 2 green. Total 5 marblesP(green) = 2/5
hellp me What is the value of x? (5 points)
Question 7 options:
1)
10
2)
15
3)
30
4)
45
PLEAS HELP ITS DUE TODAY!!!!!!!!!!!!!!!!!!
Answer: 1=4
2=21
3=20
4=24
5=14
6=9
7=6
8=15
9=5
10=0.033333333
Step-by-step explanation:
Susan incorrectly factored the expression below.
may someone please help me understand something in class? its theoretical and experimental probability basically just probability in a whole and I can’t understand. I don’t need the definition I just want someone to make me understand in a simple way like a tutor, but anyways please help me understand this. Examples would work, anything. Just help me understand. Thanks anyways.
Experimental probability is the results of an experiment, let's say for the sake of an example marbles in a bag. Experimental probability would be drawing marbles out of the bag and recording the results. Theoretical probability is calculating the probability of it happening, not actually going out and experimenting.
hope this helped.
Why does the sum of the two given angles equal 180°? (2x+1)+(x-7)=180
Answer:
because its a straight line
Step-by-step explanation:
Answer:
Since the sum of the angles is 180 degrees and each angle is represented by the respective algebraic expressions, then to find the value of x, just add the expressions up, set that sum equal to 180, and solve for x. So, (2x-7)+(x+25)+(3x+12)=180 is our equation. Now we just simplify and solve for x.
(2x-7)+(x+25)+(3x+12)=180
6x+30=180 b/c 2x+x+3x=6x and -7+25+12=30.
6x=150 subtract 30 from both sides of the equation
x=25.
Step-by-step explanation:
Hope this helps!
I'LL GIVE BRAINLIEST
Answer:
i think a triangle
Step-by-step explanation:
PLS HELP ASAP GIVE BRAINLIEST
Two photos look at both
Answer:
likely, unlikely
Step-by-step explanation: if there are more black than red it will be a higher chance of black to be picked
Please help ASAP!
Evaluate the expression : 5/9 ( F - 32) when F = 122
1. 50
2. 60
3. 40
4. 20
Answer: 50
Step-by-step explanation:
5/9 (f-32) if f = 122 you take 122 and subtract 32 because of order of operations and now you have 5/9 (90) and then you multiply 5/9 times 90 and you get 50
PLEASE HELP!!
Which relation is a function?
A. {(4, 0), (4, -5), (4, -2), (2, -4)}
B. {(0, 1), (1, -4), (0, 5), (1, -7)}
C. {(3, 4), (1, -2), (-5, 4), (2, 2)}
D. {(3, -1), (2, 3), (10, 2), (10, 8)}
Answer:
only c is function as it has unique images
others are not function because image ain't unique
This morning, Rita's car had 18.12 gallons of fuel. Now, 4.7 gallons are left. How much fuel did Rita use?
Elspeth knows that Pi times r almost-equals 9.42 centimeters. What would she need to do to find the circumference?
She could multiply 9.42 by 2.
She could multiply 9.42 by Pi.
She could divide 9.42 by 2 to find the radius, and then square the radius.
She could divide 9.42 by Pi to find the radius, and then multiply 9.42 by the radius.
Answer:
First one
Step-by-step explanation:
David is running a 500 m sprint. so far he has run 300 m. what fraction of the spirit does he have left?
?
__
?
what percent?________%
Answer:
200/500=2/5
40%
Step-by-step explanation:
If the total distance of the sprint is 500m and he's already run 300m, so subtract 500-300 which equals 200.
Then put it in fraction form 500 being the total distance needing to be traveled in all will be your denominator and 200 being the distance left to be traveled will be your numerator. 200/500
Then simplify=200/500 divided by 100/100 equals 2/5.
Then to get it to a percentage divide 2 by 5 which equals .40
Then convert to a percentage 40%
Are these expressions equivalent? (Simplify & substitute)
2(4n+2)-2 8n+2
Is this table proportional or non proportional , How do you know?
Help
the best answer will get brainly