Question 1:
What is the value of x when y = 4?
x=0.8
Question 2:
What is the value of y when x = 3?
y = 13.5
Question 3:
Which equation represents a proportional relationship?
y=12x
Question 4:
What is the corresponding equation?
y=1.5x
Question 5:
What is the corresponding equation?
y=1/2x
The answers to each part is mentioned below.
What are algebraic expressions?In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.Given are the questions as mentioned.
Direct variation of {y} with {x} means that as {x} increases, the value of {y} increases uniformly with it. Mathematically -{K} = y/x = constant
Scale factor {K} is a dimensionless value that indicates the constant ratio value indicating direct variation.{ 1 } -
The variables y and x have a proportional relationship.Also y = 15 when x = 3.We can write for proportional relationship as : 15/3 = 4/x{x} = (4 x 3)/15 = 4/5
{x} = 4/5
{ 2 } -
The variables y and x have a proportional relationship.Also y = 9 when x = 2.We can write for proportional relationship as : 9/2 = y/3{y} = (9 x 3)/2 = 27/2 = 13.5
{y} = 13.5
{ 3 } -
An equation representing a proportional relationship is of the form -
y = mx + c
So all the equations given represent proportional relationship.
Therefore, the answers to each part is mentioned above.
To solve more questions on scale factor, visit the link below -
brainly.com/question/30215119
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20 is 5% of what number?
Answer:
400
Step-by-step explanation:
Plz mark B R A I N L I E S T
you can derive that 5 percent of 400 equals 20
Step-by-step explanation:
please help me!! PLEASE HELP ME!! please
b
Step-by-step explanation:
because it is a function
Help you yall
thank you
what is the slope of the line that passes through the points (48,10) and (-36,17)
Answer:
slope is -1/12
Step-by-step explanation:
slope =y2 - y1 / x2-x1
The ratio of green to red jelly beans in a jar is 4 to 6. If there are 28 green jelly beans, how many total green and red jelly beans would be in the jar?
4 x 7 = 28
6 x 7 = 42
42 is the answer UvU
Answer:
76 jelly beans total
Step-by-step explanation
4 x 8 = 28
6 x 8 = 48
28 + 48 = 76
Help I did the rest just need help with the bottom.
Answer:
30
Step-by-step explanation:
used the slope formula y2 - y1 / x2 - x1
120 - 90 / 4 -3
30 / 1 = 30
give brainliest pls
Answer:
30
Hopefully this helped you!!!!!!!!! :)
If x=4 y=-3 and z =5 find the value of 5y +2x-z
Answer:-12
Step-by-step explanation:
So if the equation is 5y+2x-z and the substitutions are x=4 y=-3 z=5 , all you have to do is replace each variable with its given numbers. Like so
5(-3)+2(4)-5
Now what you have to do is simplify
Negative times a positive is a negative
Negative times a negative is a positive
Positive times a positive is a positive
So....
-15+8-5
-20+8
-12
This is a simple substitution problem. Remember the basics of negatives and positives! Than you will be just fine! :D
What is the slope-intercept form of the equation of the line that passes through the point (-6,1), and is perpendicular to the graph of 2x + 3y = -5
Answer:
Y= -3/2x-8
Step-by-step explanation:
What method can be used to prove the triangles below are congruent
Answer:
SSS?Step-by-step explanation:
I don't know why the answers don't offer this an option. However, the side that shares both triangles must be congruent to itself and the other highlighted congruent parts are sides, not angles. Therefore by my calculations, the answer has to be SSS, but this isn't a choice.
Please let me know if you need more help :)what is the sum of the interior angles of a heptagon ?
Let n be rhe number of vertices in the polygon, then the sum of all interior angle is (n - 2) × 180°.
Number of sides in a heptagon = 7
So, n = 7
So,
the sum of the interior angles of a heptagon
= (7 - 2) × 180°
= 5 × 180°
= 900°
Answer:
900
Step-by-step explanation:
The equation for line 1 is
Answer:
y=1x-5
Step-by-step explanation:
Answer:
The equation for line one is y = -2x - 5
Find the zeros of the function.
Enter the solutions from least to greatest.
h(x) = (-2x + 3)(-x+3)
lesser x =
greater x =
Answer:
lesser x=3/2
greater x= 3
Step-by-step explanation:
Answer: lesser x= -2
Greater x = -3/2
Step-by-step explanation:
Algebraic expression for the following verbal expression Mary has$2x and lily has 7 dollars more how much does Lilly have
Answer:
9
Step-by-step explanation:
2+7=9
y- 22= 89
y-22 + __ = 89 +22
y= __
Answer:
Step-by-step explanation:
57
Answer:
The answer will be 57
hope this helps
how to find common denominator
Answer:
To make the denominators the same Multiply top and bottom of each fraction by the denominator of the other.
Step-by-step explanation:
Albert bought 9 pounds of fish at a grocery store at $5 per pound for salmon and $3 per pound for catfish. He spent a total of $37 on the salmon and catfish. This can be represented using the following system of equations:5s +3c = 37 s + c = 9 How many pounds of salmon did Albert purchase?
Answer:
5 pounds
Step-by-step explanation:
To find that we simply solve the system of equationsSo make c the subject of the formula of equation 2[tex]s+c=9\\c=9-s[/tex] Substitute in equation 1 [tex]5s+3c=37\\5s+3(9-s)=37\\5s+27-3s=37\\5s-3s+27-(27)=37-(27)\\2s=10\\s=5[/tex] so that's 5 pounds of salmonHenry is making a corn grits recipe that calls for 14 cup of corn grits for every 12 cup of water.
How much water will he need if he uses 1 1/2 cups of corn grits?
Answer:
Im not sure right now ill answer back when i know
Step-by-step explanation:
Answer:
3/2 cups
pls give brainliest
Chris ate 1/4 of the pizza.if the pizza has eight slices, how many slices are lef
Answer:
6
Step-by-step explanation:
1/4 = 2/8
8/8 - 2/8 = 6/8
This means 6 slices are left out of 8 slices.
Which statement illustrates the distributive property?
Answer:
3(4+5) = 3(4) + 3(5)
Step-by-step explanation:
in distributive property, you multiply the number outside the parenthesis by both of the numbers inside, but still keeping the sign the same.
Answer:
b
Step-by-step explanation:
A line of symmetry is also a line of _____
Answer:
reflection
Step-by-step explanation:
What is the greatest common factor of 60,70, and 80
Answer:
10
Step-by-step explanation:
Answer: The GCF of 60, 70, and 80 is 10.
Step-by-step explanation: If you think about it, the GCF is definitaly going to be 10. That is because you can multiply 10 to get 60, 70, and 80. There is no other number higher than 10 that can be multiplied by something to get all of these values.
PLEASE HELP SHOULD BE EASY!!!!!
Answer:
it's A
Step-by-step explanation:
hope this helps u with whatever you are doing!
Answer:
1.
Step-by-step explanation:
I just know.
Need help! only have today till I turn in!
Answer:
yes
Step-by-step explanation:
PLEASEE HELP.!! ILL GIVE BRAINLIEST.!! *EXTRA POINTS* DONT SKIP:((
Answer: -4
Step-by-step explanation:
Answer:
- 1/4
Step-by-step explanation:
The formula to find slope from two points is (x₂ - x₁) / (y₂ - y₁).
Substituting the points in (2, 4 = x₁, y₁ and 5, -8 = x₂, y₂) we get (5 - 2) / (-8 - 4).
= 3 / -12
= - 1/4
(Tip: when assigning the numbers to the variables, make sure x₁, y₁ are always from the same pair.)
2x-5(x-4)=-7+3x+15 pls help
Asap
Answer:
x=2
Step-by-step explanation:
2x-5x+20=-7+3x+15
-3x+20=8+3x
20-8=3x+3x
12=6x
x=2
Graph 8x−4y=16. From Big Ideas Math
Solve for y.
8x−4y=16
-4y = -8x + 16
y = (-8x + 16)/-4
y = (-8x)/-4 + (16/-4)
y = 2x - 4
We only need two points to graph linear equations.
Now let x be 0 and solve for y.
y = 2(0) - 4
y = -4
This leads to the point (0, -4).
We need another point.
Let y = 0 and solve for x.
0 = 2x - 4
4 = 2x
4/2 = x
2 = x
This leads to the point (2,0).
Plot these two points on the xy-plane and connect the points with a straight line.
I'll let you do that.
Understand?
You want to know the opinions of drivers with valid licenses across America on the issue of establishing a law that requires individuals to take and pass another driver's test at the age of 65 to determine whether they may retain their license. You obtain a list of all licensed drivers and mail a survey to a random sample of 10,000 drivers. Of those, 6,457 responded and 46% say they favor the test. Which of the following statements is true? (5 points)
A. Because random sampling is used, we can feel confident that the percentage of all
drivers with a valid license who say they favor the test is close to 46%.
B. The results of this survey may be affected by nonresponse bias.
C. We cannot trust these results because the survey was mailed. Only survey results
from face-to-face interviews are considered valid.
D. Because more than half of those who were mailed the survey actually responded,
we can feel fairly confident that the actual percentage of all drivers with a valid
license who say they favor another test is close to 46%.
Answer:
The results of this survey may be affected by nonresponse bias
Step-by-step explanation:
Took the test :)
Answer:
B. The results of this survey may be affected by nonresponse bias.
Step-by-step explanation:
I took the test
Find the discriminant of 3x2 - 10x=-2.
Answer:
x= 4/5 or 0.8
Step-by-step explanation:
Answer: im going with the person on top so i dont have to do anything
Step-by-step explanation:
Samir took a total of 21 quizzes over the course of 3 weeks. After attending 6 weeks of school this quarter, how many quizzes will Samir have taken in total? Solve using unit rates.
What decimal is equivalent to 5/6?
Look at the picture.
Answer:
The answer is B
Step-by-step explanation:
Answer:
B. 8.3 with the bar on the 3
Step-by-step explanation:
B because the decimal of 5/6 is 8.3333333 and so on to represent the repeating and endless 3 put a bar on the 3.