Given the function:
[tex]y=-\frac{1}{4}x-4[/tex]The given function is a linear function
The rate of change of the linear function = the slope of the function
The slope = the coefficient of x = -1/4
So, from the given options, you will select the function that has a slope that is greater than (-1/4)
Select the correct answer from the drop-down menu.The answer choices are in the black box.....which one is it?
ANSWER
C and D
EXPLANATION
Step 1: Given that:
[tex]C\text{ = }\begin{bmatrix}{2} & 1{} & {} \\ {1} & {}2 & {} \\ {2} & {1} & \end{bmatrix}\text{ and D = }\begin{bmatrix}{\sqrt[]{4}} & 1{} & {} \\ {1} & {}\sqrt[]{4} & {} \\ {\sqrt[]{4}} & {1} & \end{bmatrix}[/tex]Step 2: Simplify matrix D
[tex]\begin{gathered} \text{D = }\begin{bmatrix}{\sqrt[]{4}} & 1{} & {} \\ {1} & {}\sqrt[]{4} & {} \\ {\sqrt[]{4}} & {1} & \end{bmatrix}\text{ = }\begin{bmatrix}{2} & 1{} & {} \\ {1} & {}2 & {} \\ {2} & {1} & \end{bmatrix}\text{ since }\sqrt[]{4}\text{ = 2.} \\ \end{gathered}[/tex]Hence, matrices C and D are equal.
A group of 40 children attended a baseball game on a field trip. Each child received either a hot dog or a bag of popcorn. Hot dogs were $2.25 and popcorn was $1.75. If the total bill was $83.50, how many hotdogs and bags of popcorn were purchased?
Write the equations for the situation above. (Use the variable x for hotdogs and y for popcorn)
Answer:
See Explanation
Step-by-step explanation:
[tex]x+y=40\\2.25x+1.75y=83.5\\[/tex]
from the first you have
[tex]h=40-p[/tex] substitute into the second:
[tex]2.25(40-p)+ 1.75x= 83.5\\90-2.25y+1.75x= 83.5[/tex]remaining
[tex]0.5y=6.5\\p= \frac{6.5}{0.5} =13\\[/tex]
substitute back into [tex]h= 40 - y\\h = 40 - 13 = 27[/tex]
Hope this helped :)
express y in terms of x: 6(x-y) = 19
Expressing y in terms of x gives y = x - 19/ 6
What is subject of formulaSubject of formula can be defined as the variable that is being expressed in terms of other variables in an equation, function or expression.
It is also described as the variable that is being worked out in an expression or equation.
It is made to stand alone on on side of the equality sign.
We have the equation;
6(x-y) = 19
To make 'y' the subject of formula, let's take the following steps;
Divide both sides by 6, we have;
x - y = 19/ 6
now, take the variable 'x' over the equality sign
-y = 19/ 6 - x
Divide both sides by -1
y = x - 19/ 6
Hence, the equation is y = x - 19/ 6
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Find the slope of the line that passes through (2, 12) and (4, 3). Simplify your answer and write it as a proper fraction, improper fraction, or integer.
The slope of the line passing through the coordinates (2, 12) and (4, 3) is -9/2.
Slope is simply expressed as change in y over the change in x.
Slope m = ( y₂ - y₁ )/( x₂ - x₁ )
Given the data in the question;
Point 1( 2, 12 )
x₁ = 2y₁ = 12Point 2( 4,3 )
x₂ = 4y₂ = 3To determine the slope, plug the given x and y values into the slope formula and simplify.
Slope m = ( y₂ - y₁ )/( x₂ - x₁ )
Slope m = ( 3 - 12 )/( 4 - 2 )
Slope m = ( -9 )/( 2 )
Slope m = -9/2
Therefore, the slope of the line is -9/2.
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Sixty and sixty eight thousandths
Answer: 60 and 68/1000
Step-by-step explanation:
Not sure if you wanted it in fraction, decimal, or percentage form.
Answer:
60 and 68.000
Step-by-step explanation:
i not sure if that was what u were looking for
Please help immediately
What is the equation of the line that passes through Point (6, 0) and has a Slope of -1/2.
I know that it is f(x) = -1/2x + 3 but I need a step by step and clear explanation.
Answer:
[tex]y = - \frac{1}{2} x + 3[/tex]
Step-by-step explanation:
Please see the attached images for the full solution.
Note that when y is replaced with f(x), it is known as a function instead of an equation.
Richey bought a 35-pound bag of dog food on Monday. His dog eats an
average of 3.5 pounds a day. How many pounds will remain in the bag after 8
days? 7 pounds
Answer:
Step-by-step explanation:
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Please help me out with questions 20.-24.
Answer:
answers are in the photo
Four students are sharing 1/3 carton of yogurt
equally. How much yogurt will each student
get
Answer: 1/12
Step-by-step explanation:
1) Set up the equation
1/3 / 4
2) Change 4 into a fraction
1/3 / 4/1
3) Change the divide into a multiply by flipping the 2nd fraction
1/3 * 1/4
4) Solve
1/12
The following figure shows the entire graph of a relationship.
Does the graph represent a function?
Yes or no
Answer:
No
Step-by-step explanation:
The graph fails the vertical line test. More than one y-value is on one x-value.
In the designers proposal, they state that the paths EC and DB each measure 100 feet. They also state that the garden will require 140 feet of hedges. Are their numbers reasonable?
We are given a circle whose diamter is 100 feet. To find out if 140 feet of hedges will fit into it given all the oother dimensions, we will have to calculate the lengths of the chords that correspond to the hedges.
First, let us solve for AE.
[tex]\begin{gathered} chord=2r\sin\theta \\ \\ AE=100\sin50 \\ AE=76.6 \end{gathered}[/tex]We used θ = 50 degrees because we know that the measurement of the arc is equal to the measurement of the central angle.
Now, to solve for the length of ED, we need to find out the measurement of the central angle that subtend it.
Segments AD and EC intersect, thus the following equation must be true for the angles that they form and the arcs that they subtend:
[tex]\begin{gathered} m\angle EXA=\frac{1}{2}(m\hat{AE}+m\hat{DC}) \\ \\ 70=\frac{1}{2}(50+m\hat{DC}) \\ \\ 140=(50+m\hat{DC}) \\ \\ 90=m\hat{DC} \end{gathered}[/tex]Again, using the formula for finding the length of a chord, we can now solve for the length of ED.
[tex]\begin{gathered} chord=2r\sin(\theta) \\ \\ ED=100\sin90 \\ ED=100 \end{gathered}[/tex]Finally, we need to calculate the length of BC. But we know that BC = ED because the diameters meet at a 90-degree angle and so the chords that they subtend are all congruent. You may also think of ∠BYC as being vertical to ∠EYD. So BC should be equal to ED either way. BC = 100
So the total length of the hedges is:
[tex]\begin{gathered} AE+ED+BC \\ =76.6+100+100 \\ =276.6ft \end{gathered}[/tex]Therefore, the numbers given by the designers are not reasonable. 140 feet is too short for the hedges.
The figure to the right shows a square floor plan with a smaller square area that will accommodate a combination fountain and pool. The floor with the fountain-pool area removed has an area of 432 square meters and a perimeter of 90 meters. Find the dimensions of the floor and the dimensions of the square that will accommodate the fountain and pool
Considering the area and the perimeter of a square, it is found that:
Each length of the large square floor is of 21 meters, and each length of the small square floor is of 3 meters.
What are the area and the perimeter of a square?Supposing a square of side length s, the area and the perimeter are given as follows:
Area: A = s².Perimeter: P = 4s.The area of the figure is given by the subtraction of the area of the large square, of side length x, by the area of the small square, of side length y, hence:
A = x² - y²
x² - y² = 432.
The perimeter of the figure is the perimeter of the square of side length s added to two edges of the smaller square of side length s, hence:
P = 4x + 2y
4x + 2y = 90.
Then the system of equations to find the dimensions is given as follows:
x² - y² = 432.4x + 2y = 90.The solution of this system is given by:
x = 21 m (each length of the large square floor).y = 3 m (each length of the small square floor).Missing informationThe problem is completed by the image given at the end of the answer.
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consider the dihedral point group constructed from two generators express a 3d matrix representation for the two generators of the group in the hexagonal basis
the groups generated by two elements of order 2 are K4 and dihedral group.
We are given that G be a finite group with x, y belong to G have two elements of order two.
We have to prove that <x,y> is either abelian or isomorphic to a dihedral group.
<x,y> means the group generated by two elements of order 2.
We know that Zn is a cyclic group and number of elements of order 2 is always odd in number and generated by one element .So , given group is not isomorphic to Zn
But we are given that two elements of order 2 in given group
Therefore, group G can be K4 or dihedral group
Because the groups generated by two elements of order 2 are K4 and dihedral group.
We know that is abelian group of order 4 and every element of K4 is of order 2 except identity element and generated by 2 elements of order 2 and dihedral group can be also generated by two elements of order 2
Hence, <x,y> is isomorphic to K4 or D2.
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Use the distributive property to write an equivalent expression.
9(7r−3s+10)
Thanks!
Answer:
63r-27s+90
Step-by-step explanation:
9 times 7 is 63
9 times -3 is -27
9 times 10 is 90
Ayuda es para mañana son similar figures
Answer:
2. x = 2
3. x = 43.2
4. x = 3.6
Step-by-step explanation:
solve the equation for all values of x in simplest form (x+1)^2=15
Answer: [tex]x=-1 \pm \sqrt{15}[/tex]
Step-by-step explanation:
[tex](x+1)^2 =15\\\\x+1 =\pm \sqrt{15}\\\\x=-1 \pm \sqrt{15}[/tex]
PLS HELP 9th Grade MAth
The equation of the given linear function passing through two points is
y = 6 -2x.
What is equation of a linear function passing through given two points?Let (x₁, y₁) and (x₂, y₂) be two points on the given linear function whose equation in variables x and y is given by formula below.
(y - y₁) = {(y₂ -y₁)/(x₂-x₁)} (x -x₁)
Given that f is a linear function ,
f(-3) = 12
f(6) = -6
⇒(x₁, y₁) = ( -3,12)
(x₂, y₂) = ( 6,-6)
Thus the equation of the linear function is :
⇒ y - 12 = { ( -6-12)/(6-(-3))} ( x - (-3))
⇒ y - 12 = { -18/ 9} ( x +3)
⇒ y - 12 = -2 ( x+3)
⇒ y = 12 -2x - 6
⇒ y = 6 -2x
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10. (2, -4); slope = -3
The equation (-4 = -3x + 2) is formed and plotted on the graph (Refer to the graph attached below).
What is a graph?In mathematics, a graph is a visual representation or diagram that shows facts or values in an ordered way. The relationships between two or more items are frequently represented by the points on a graph. Charts and graphs come in a variety of styles. Line graphs, bar graphs and histograms, pie charts, and Cartesian graphs are likely the four most popular types.So, the equation can be:
The slope is -3 and the coordinates are (2, -4):Formula: y = MX + bWhere m is the slope.From the equation:
y = MX + b-4 = -3x + 2Now, plot the equation on the graph as follows:
(Refer to the graph attached below)Therefore, the equation (-4 = -3x + 2) is formed and plotted on the graph (Refer to the graph attached below).
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The correct question is given below:
From the equation and plot it on a graph when, (2, -4) and slope = -3.
You get paid
$10.75 an hour at your job and the newest video game costs
$60.00 Find the inequality that represents the number of hours you will need to work in order to afford the video game. Use x as a variable
The inequality that represents the number of hours you will need to work in order to afford the video game is x ≥ 5.58.
What is an inequality?Inequalities are created through the connection of two expressions. It should be noted that two expressions in an inequality aren't always equal. They are denoted by the symbols ≥ < > ≤
Let the number of hours be represented as x.
The person is paid $10.75 an hour at your job and the newest video game costs $60.00. This will be illustrated as:
10.75x ≥ 60
Divide
x ≥ 60 / 10.75
x ≥ 5.58
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Which relation represents a function?
does anyone know how to solve and find out the answer? Thank you so much if you help!
Answer:
perpendicular
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = - [tex]\frac{2}{3}[/tex] x + 5 ← is in slope- intercept form
with slope m = - [tex]\frac{2}{3}[/tex]
3x - 2y = 4 ( subtract 3x from both sides )
- 2y = - 3x + 4 ( divide through by - 2 )
y = [tex]\frac{3}{2}[/tex] x - 2 ← in slope- intercept form
with slope m = [tex]\frac{3}{2}[/tex]
• Parallel lines have equal slopes.
clearly the slopes are not equal, so not parallel.
• the product of the slopes of perpendicular lines = - 1
- [tex]\frac{2}{3}[/tex] × [tex]\frac{3}{2}[/tex] = - 1
then the lines are perpendicular to each other.
Answer:
The lines are perpendicular.
Step-by-step explanation:
[tex]3x -2y=4[/tex]
Step 1: Add -3x to both sides.
[tex]3x-2y+-3x=4+-3x[/tex]
[tex]-2y=-3x+4[/tex]
Step 2: Divide both sides by -2.
[tex]\frac{-2y}{-2} =\frac{-3x+4}{-2}[/tex]
[tex]y=\frac{3}{2} x-2[/tex]
Finally...
[tex]y=\frac{3}{2} x-2\neq y=-\frac{2}{3} x+5[/tex] so the lines are not parallel.
However, [tex]\frac{3}{2}[/tex] is the opposite reciprocal of [tex]-\frac{2}{3}[/tex], so, the lines are perpendicular.
(You can also try drawing the lines.)
Determine the y-value of each ordered pair based on the given x-value
y= -x + 9; (-9, ), (1, ), (5, )
Brainfiy to correct person
The value of y in each case are 18,8 and 4 respectively.
Given equation:-
y = -x + 9
Values of x = {-9, 1, 5}
We have to find the corresponding values of y for each value of x.
Putting x = -9 in the given equation, we get,
y = -(-9) + 9 = 9 + 9 = 18
Putting x = 1 in the given equation, we get,
y = -1 + 9 = 8
Putting x = 5 in the given equation, we get,
y = -5 + 9 = 4
Hence, the values of y are {18, 8,4}
The complete ordered pair of (x,y) is given by:-
(-9,18)
(1,8)
(5,4)
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FRUIT Ronald buys fresh fruit from a fruit stand. Apples cost $5 per pound and peaches cost $6 per pound. He has $60 to spend. The table
shows the function relating the number of pounds of apples, x, and the number of pounds of peaches, y, Ronald could purchase.
Apples (lb) Peaches (lb)
X
y
0
1.2
3
6
7.2
12
The ?
y
10
9
7.5
5
4
0
Hintercept shows that if Ronald buys only apples, he can buy ?
intercept shows that if Ronald buys only peaches, he can buy ?
pounds. The
pounds
Answer:
a
Step-by-step explanation:
your a could be the same.
←
For the given function, find (a) f(1) (b) f(-2).
(a) f(1) =
(b) f(-2) =
For the given functions , f(1) = -3 and f(-2) = -6 .
In the question
a graph is given
we have to find the value of the functions f(1) and f(-2)
the value of f(1) means the value of y, when x=1 .
we see that ,
on the graph when x = 1 , the value of y = -3 .
so the value of [tex]f(1)[/tex] = -3 .
the value of f(-2) means the value of y, when x = -2 .
we see that ,
on the graph when x = -2 , the value of y = -6 .
so the value of [tex]f(-2)[/tex] = -6 .
Therefore , For the given functions , f(1) = -3 and f(-2) = -6 .
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Find the area of the triangle described below. Round to the nearest hundredth.b = 20, a = 29, c = 21
Solution
We want to find the area of the triangle given te sides
b = 20
a = 29
c = 21
Note: Hero formula for calculating the Area of a Triangle
We will first find S
[tex]\begin{gathered} S=\frac{a+b+c}{2} \\ S=\frac{29+20+21}{2} \\ S=35 \end{gathered}[/tex]To find the Area
[tex]\begin{gathered} Area=\sqrt[]{S(S-a)(S-b)(S-c)} \\ Area=\sqrt[]{35(35-29)(35-20)(35-21)} \\ Area=\sqrt[]{35\times6\times15\times14} \\ Area=\sqrt[]{44100} \\ Area=210 \end{gathered}[/tex]Therefore, the area is
[tex]Area=210[/tex]HELP PLEASE!!!!!!!!!!!
What is the dimensions of a rectangle that is 32ft by 8ft after it is dilated by a scale factor of 7/8
Dimensions of rectangle after dilation of scale factor 7/8 will be
[tex] (\frac{7}{2},14), (\frac{-7}{2},14), (\frac{-7}{2},-14), (\frac{7}{2},-14) [/tex]
Dilation of rectangle :-Dilation means the area of any rectangle increases or decreases due to change in it's dimensions but the shape of that rectangle will remain same.
Now Consider the point of dilation as the center of rectangle and assume that the center of given rectangle is at the origin.
As given the length and width of rectangle is 32ft and 8ft respectively.
∴ The Dimensions of rectangle will be (4,16), (-4,16), (-4,-16) and (4,-16).
Now As the rectangle is diluted by the factor of 7/8.
So Now New Dimensions are Calculated by simply multiplying the available dimensions with the scale factor of dilation.
∴ new Dimension after dilation will be
[tex] (4(\frac{7}{8}),16(\frac{7}{8})), (-4(\frac{7}{8}),16(\frac{7}{8})), (-4(\frac{7}{8}),-16(\frac{7}{8})), (4(\frac{7}{8}),-16(\frac{7}{8})) [/tex]
∴ Dimension after dilution will be ;
[tex] (\frac{7}{2},14), (\frac{-7}{2},14), (\frac{-7}{2},-14), (\frac{7}{2},-14) [/tex]
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You have a $25 calling card. calls made using the card within the united states costs $10 per minute. while calls made from the us to france cost $25 per minute. write an inequality that relates the number of minutes x you can use for calls within the us and the number of minutes y you can use from de us and france
Answer:
10× + 25y ≤ 25
Answer:
0.1x + 0.25y ≤ 25
Step-by-step explanation:
A call within the US is $0.10, a call to France is $0.25, and you have $25.00. Your total amount of money spent depends on how many calls you make. Now, turn this information into an inequality.
PLEASE SOMEONE HELP ME
question 6
The exponential function in the graph shows the value, in dollars, of an investment over time. What real-world information is given by each feature of the graph?
THE TWO PICTURES GOES WITH QUESTION 6
Question 12
Evan runs a website that has gotten quite popular. However, its popularity seems to be decreasing and the site is now getting 7% fewer hits each week. If Evan's site got 34,000 hits this week, how many weekly hits can he expect it to get 3 weeks from now?
Round to the nearest whole number.
A. 134,360 hits
B. 27,348 hits
C. 41,651 hits
D. 714,000 hits
Considering exponential functions, it is found that:
6.
(1.7.5): The value after one year.y-intercept of 10: starting value.12. The number of hits 3 weeks from now will be of 27,348, hence option B is correct.
What is an exponential function?An exponential function is modeled according to the rule given next:
[tex]y = ab^x[/tex]
The parameters of the exponential function are defined as follows:
a is the y-intercept, which is the numeric value of the function when x = 0.b is the rate of change of the function.For item 6, considering the points (0,10) and (1,7.5), the parameters are given as follows:
y-intercept of 10, which is the starting value.When x = 1, y = 7.5, given the value after one year.For item 12, the initial amount and the rate of change are given as follows:
a = 34,000, b = 1 - 0.07 = 0.93.
Hence the number of hits x weeks from now is modeled according to the following function:
[tex]h(x) = 34000(0.93)^x[/tex]
After 3 weeks, x = 3, hence the number of hits will be of:
[tex]h(3) = 34000(0.93)^3 = 27348[/tex]
Meaning that option B is correct.
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True or false
-5/-1 = 5?
(0/-4) = 0?
-3/1 = -3?
- 8/0 = 0?
Checking if the results of the following divisions are true or false.
a) -5/-1 = 5 ↔ True
The fraction, (remembering that it is a division), -5/-1 can be simplified to 5 by removing the negative sign from the numerator and denominator.
b) (0/-4) = 0 ↔ True
We know that any number divided by zero, the result will always be zero.
c) -3/1 = -3 ↔ True
Any number divided by one equals the same number.
d) -8/0 = 0 ↔ False
A normal number simply cannot be divided by 0.
The three previous divisions are true, that is, your answers are correct. While the last one can't, since it can't be divided by 0, this one is false.
Rewrite 4^-3 x 4 using a single positive exponent.
The term 4^-3 x 4 can be rewritten using a single positive exponent as 1/4^2.
What is positive exponent?The positive exponent serves as the exponents that contain a positive number, it should be noted that the exponent is the degree at the top[ of the given number which is a negative exponents and the question expect us to turn it to a positive exponents after simplification of the given terms which will be simplified below to the simplest expression.
To rewrite the given term so that it can have a positive exponents then it can be expressed as :
=4^-3 x 4
= 4^-2
1/4^2
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