To write a direct variation equation, we use the form y = kx, where k is the constant of variation. We can find the value of k by substituting the given values into the equation. Once we have the value of k, we can write the direct variation equation that relates x and y. Finally, we can find the value of y for a given value of x by substituting it into the equation.
Explanation:To write a direct variation equation, we use the form y = kx, where k is the constant of variation. We are given that y = 15 when x = 6. To find k, we can substitute these values into the equation:
15 = k * 6
To find the value of k, we divide both sides by 6:
k = 15/6 = 2.5
Now we can write the direct variation equation that relates x and y:
y = 2.5x
To find the value of y when x = 7, we substitute x = 7 into the equation:
y = 2.5 * 7 = 17.5
Learn more about Direct Variation here:https://brainly.com/question/34355670
#SPJ11
Simplify 3(3y + 2) + 8y. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
23y
–17y + 2
17y + 6
–17y + 6
Which logical form represents this statement?
Either it is not cold today or I am wearing woolen coat.
p : It is cold today. q : I am wearing woolen coat.
~p ∧ ~q
~p ∧ q
~p ∨ q
~(p ∨ q)
PLEASE HELP on these problems! I really need the help and these are due in a few hours. Very urgent. I would really appreciate the help, so please help!!!
1. If f(x) = a(r)^x is an example of exponential decay, what must be the value of a and r?
2. The population of Greenfield was 52,500 at the beginning of 1980. Its population steadily decreased by 2.5% per year from 1980 through 1990. What is the population of Greenfield at the end of 1990?
3. If g(x) is the inverse of f(x) - 2x + 1, find a point on g(x) for which both coordinates are positive integers less than 10.
the water level of a pond drops an inch every 7 days without rain how many days will it take the ponds water level to drop by 12 inches
1 inch in 7 days
multiply 7 by 12
7 *12 = 84 days
if x and y are both negative when is x-y positive
find the quotient.
-7 ÷ 14/3.
a. -2/3
b. -98/3
c. -1/2
d. -3/2
To find the quotient of -7 ÷ 14/3, simplify the fraction 14/3 to 42/3 and then divide -7 by 42/3. The quotient is -1/2.
Explanation:To find the quotient of -7 ÷ 14/3, we can simplify the fraction 14/3 to an improper fraction or a mixed number. Let's convert it to an improper fraction. We multiply the denominator (3) by the whole number (14) and add the numerator (0) to get the new numerator. This gives us 42/3. Next, we divide -7 by 42/3. When dividing by a fraction, we multiply by its reciprocal. So, -7 ÷ 42/3 is the same as -7 × 3/42. This simplifies to -21/42 which reduces to -1/2.
Learn more about Quotient here:
https://brainly.com/question/21942308
#SPJ2
subtract 6/8 - 1/4 enter your answer in the box below as a fraction in lowest terms using the slash ( / ) as the fraction bar
The difference of the given fractions is 1/2.
Given that, 6/8 - 1/4.
Subtracting fractions include the subtraction of two or more fractions with the same or different denominators. Like fractions can be subtracted directly but for unlike fractions we need to make the denominators same first and then subtract them.
Here, 6/8 - 1/4
= 6/8 - 2/8
= (6-2)/8
= 4/8
= 1/2
Therefore, the difference of the given fractions is 1/2.
To learn more about the subtraction of fractions visit:
https://brainly.com/question/5220474.
#SPJ6
The sides of ABC are 30 units, 40 units, and 60 units in length. If the corresponding sides of XYZ are r times as long as the sides of ABC, which expression gives the perimeter of XYZ? 130r 3 x 130r
.help me with this please. thank you
What is the length of TW¯¯¯¯¯¯ ?
segment T W with point U between T and W. segment T U is marked congruent to segment U W. segment T U is labeled as 16 units long.
Enter your answer in the box.
The length of TW of the given Line segment is; 32
How to find the length of a Line segment?From the given line segment with partition, we can see that;
Segment TU = 16
From the partition, we see that;
Segment TU is equal to Segment UW. Thus;
TU = UW = 16
Thus;
TW = TU + UW
TW = 16 + 16
TW = 32
Read more about Line segment length at; https://brainly.com/question/12918792
#SPJ6
Paula has 24 coins in her drawer. seven of the coins are nickels and the rest are pennies. what is the total value in cents of the coins in her drawer?
24-7=17
17
pennies
7 nickles
total value is
5(7)+1(17)=35+17=52
cents
You lose one quarter, two dimes, and two nickels. Write the amount as a decimal.
What is the difference between independent and conditional probability? Which one requires the use of the Addition Rule?Explain.
Answer:
In probability, independent events are those that if one event occurs, it does not change the probability of the other event.
Whereas conditional probability is defined as the probability of one event occurring with some relationship to one or more other events.
The addition rule is used for both the independent and conditional probabilities.
For independent event the probability is shown as :
[tex]P(YorZ)=P(Y)+P(Z)[/tex]
For conditional: [tex]P(YorZ)=P(Y)+P(Z)-P(YandZ)[/tex]
For sisters bought a present for their father. They recieved a 10% discount on the original price of the gift . after the discount wss taken , each sister paid $9.00. What was the original price of the gift
Ken is making gift bags for a party. He has 64 colored penes and wants to put the same number in each bag. How many bags will ken make if he puts 4 in each bag?
A rectangle of area 350 square feet is 14 times as wide as it is long. Find its length and width
What will the equation be if mowing need help. I need my lawn mowed every week from June through the middle of July. I will pay 35 dollars for each mowing for 7 weeks
What is the solution to the system of linear equations?
6x+7y=59
4x+5y=41 how do you do it
Answer:
The correct answer is 4, 5 :)
Step-by-step explanation:
A system of linear equations can be solved by elimination, substitution or using graphs.
The values of x and y for [tex]6x + 7y= 59[/tex] and [tex]4x + 5y =41[/tex] are 4 and 5, respectively.
Given
[tex]6x + 7y= 59[/tex]
[tex]4x + 5y =41[/tex]
Make x the subject in [tex]4x + 5y =41[/tex]
[tex]4x = 41 - 5y[/tex]
Divide by 4
[tex]x = \frac 14(41 - 5y)[/tex]
Substitute [tex]x = \frac 14(41 - 5y)[/tex] in [tex]6x + 7y= 59[/tex]
[tex]6 \times \frac 14(41 - 5y)+ 7y = 59[/tex]
[tex]\frac 32(41 - 5y)+ 7y = 59[/tex]
Multiply through by 2
[tex]2 \times \frac 32(41 - 5y)+ 2 \times 7y = 2 \times 59[/tex]
[tex]3(41 - 5y)+ 14y = 118[/tex]
Open brackets
[tex]123 - 15y+ 14y = 118[/tex]
Collect like terms
[tex]- 15y+ 14y = 118 - 123[/tex]
[tex]-y = -5[/tex]
[tex]y = 5[/tex]
Substitute [tex]y = 5[/tex] in [tex]x = \frac 14(41 - 5y)[/tex]
[tex]x = \frac 14(41 - 5 \times 5)[/tex]
[tex]x = \frac 14(41 - 25)[/tex]
[tex]x = \frac 14(16)[/tex]
[tex]x = 4[/tex]
Hence, the solution to the system of linear equations is:
[tex]x = 4[/tex]
[tex]y = 5[/tex]
Read more about system of linear equations at:
https://brainly.com/question/20379472
John paid $100 for renting a canoe for 5 hours. Which graph shows the relationship between the cost of renting a canoe for different hours?
Answer:
The first one :)
Step-by-step explanation:
The length is 5 units more than the width. The perimeter is 9 times the width. Find the length and width of the rectangle. Can you also include the steps thanks!
The length, width, and perimeter of the rectangle are 7 units, 2 units, and 18 units.
What is the perimeter?Perimeter is the sum of the length of the sides used to make the given figure.
Let the width of the rectangle be represented by x. The length is 5 units more than the width. The perimeter is 9 times the width. Therefore, we can write,
Width = x
Length = 5 + x
Perimeter = 9x
Now, the length, width, and perimeter of the rectangle together can be written as,
Perimeter = 2(Length + Width)
9x = 2[(5+x) + x]
9x = 2(5 + x + x)
9x = 2(5 + 2x)
9x = 10 + 4x
9x - 4x = 10
5x = 10
x = 10/5
x = 2
Further, the dimensions can be written as,
Width = x = 2 units
Length = 5 + x = 2 + 5 = 7 units
Perimeter = 9x = 9(2) = 18 units
Hence, the length, width, and perimeter of the rectangle are 7 units, 2 units, and 18 units.
Learn more about perimeter here:
https://brainly.com/question/10466285
#SPJ2
what is the converse of the linear pairs theorem
Use the drop-down menus to identify the values of the parabola.
Vertex = ____
Domain = {x| ____ }
Range = {y| y ≤ ____ }
The answer is
Vertex: 0,4
Domain: x is a real number
Range: 4
:D
Answer:
Vertex - (0,4)
Domain - [tex]D=[x|x\in\mathbb{R}][/tex]
Range - [tex]R=[y|y\leq 4][/tex]
Step-by-step explanation:
Given : The graph of a parabola
To find : The values of the parabola - Vertex ,Domain and Range
Solution :
To identify the vertex the given parabola given by equation
[tex]y=-x^2+4[/tex]
Vertex is given by [tex]y=a(x-h)^2+k[/tex]
where (h,k) are the vertex.
Comparing with equation,
Vertex is (h,k)=(0,4)
Domain is the set of value where function is defined.
The domain of given function is all real numbers.
[tex]D=[x|x\in\mathbb{R}][/tex]
Range is the set of value that corresponds to the domain.
[tex]R=[y|y\leq 4][/tex]
What is the measure of ∠B?
2v+46=8(v-1)
I got -54/10 which I know is wrong. Please help.
Find dy/dx by implicit differentiation. y cos x = 5x2 + 3y2
To find dy/dx by implicit differentiation, differentiate both sides of the equation with respect to x. Apply the product rule and isolate dy/dx by moving terms.
Explanation:To find dy/dx by implicit differentiation, we'll differentiate both sides of the equation with respect to x. Let's start by differentiating y cos x = 5x2 + 3y2:
Using the product rule, we have: dy/dx * cos x + y * (-sin x) = 10x + 6y * dy/dx
Next, isolate dy/dx by moving terms:
dy/dx * cos x - 6y * dy/dx = 10x - y * (-sin x)
dy/dx * (cos x - 6y) = 10x + y * sin x
dy/dx = (10x + y * sin x) / (cos x - 6y)
Solve the equation n times 50 equals 5000 explain your solution
Which Algebraic expression has a term with a coefficient of 3?
A:5y-7
B:-2y+5+3
C:3(y-6)
D:3y+1
Answer:
D:3y+1
Step-by-step explanation:
find the Algebraic expression has a term with a coefficient of 3
The number before the variable is the coefficient
A:5y-7
y has a coefficient of 5
B:-2y+5+3
y has a coefficient of -2
C:3(y-6)
y or 1y are same
Here , y has a coefficient of 1
D:3y+1
y has a coefficient of 3
Solve each problem and write your answer in scientific notation
Describe all solutions to ax = 0 in parametric vector form, where a is row equivalent to the given matrix.
Final answer:
The solutions to ax = 0 are all vectors in the null space of the matrix a. These solutions can be expressed as a parametric vector form, which may involve free variables if the matrix a has any. The general solution is a linear combination of the basis vectors for this null space.
Explanation:
The question is asking to describe all solutions to the equation ax = 0 in parametric vector form, given that a is row equivalent to a certain matrix. This matrix is understood to allow a decomposition of a vector into its perpendicular components. Such a matrix transformation typically reduces to finding the null space of the matrix.
To find the solution to ax = 0, we understand that any vector x that satisfies this equation is in the null space of a. The null vector is the most trivial solution, where all components of the vector are zero. But if there are free variables involved, the solutions may form a subspace spanned by these free variables. The general solution can then be expressed as a linear combination of these basis vectors that span the null space of a.
For instance, if our matrix a has one free variable, the parametric vector form of the solution might be t[1,0,0] if the first column of a is the pivot column and the rest are free columns. Here, t would be any scalar, representing a line through the origin in the direction of the vector [1,0,0] in three-dimensional space.
How many terms are in the algebraic expression 11;; +3 ?