Does this graph represent a function? Why or why not?
• A. No, because it is not a straight line.
• B. No. because it fails the vertical line test.
C. Yes, because it passes the horizontal line test.
• D. Yes, because it passes the vertical line test.
Answers
Answer:
D
Step-by-step explanation:
This function passes the vertical line test.
The vertical line test test is done by drawing a vertical line anywhere on the graph. If the line goes through two points or more then it isn't a function.
Related Questions
Solve this:
NO INCORRECT or report
Answers
Answer:
D
Step-by-step explanation:
Let x be the first batch
let y be the second batch
y=2x
His brothers each received 9 rolls from the second batch i.e. 9×4=36
So
2x= 36+ (10÷6)x
2x - (10÷6)x = 36
12x-10x = 216
x=108
and y= 2 × 108= 216
30 POINTSS ABD BRAINLIEST !! Let p be a prime number. Circle one expression below which could also be a prime number.
2p 7p p - 4 p squared
Give a reason for your answer above
Answers
Answer:
p - 4
Step-by-step explanation:
Prime number is a number that only has 2 factors, 1 and the number itself. Therefore, multiplying p by 2 or 7 means giving the number more than 2 factors, which would make the number no longer prime. Squaring the prime number itself does the same.
Let p = 7.
2p = 2*7 = 14 14 = 1*2*7*14
7p = 7*7 = 49 49 = 1*7*49
p - 4 = 7 - 4 = 3 3 = 1*3
p^2 = 7^2 = 49 49 = 1*7*49
Write an algebraic expression to match the graph
please help!
Answers
the graphed equation is:
y = -|x| + 1
How to find the algebraic expression that matches the graph?On the graph, we can see an absolute value equation, which opens downwards, and passes through the points (1, 0) and (0,1).
The general absolute value equation is:
y = a*|x - b| + c
Because the vertex is at the point (0, 1), we know that:
b = 0, c = 1
Replacing that we get:
y = a*|x| + 1
Now, this must be zero when we evaluate in x = 1, then:
0 = a*|1| + 1
a = -1
Then the graphed equation is:
y = -|x| + 1
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I don't get the minutes part
Answers
Explanation : to find time, take distance divided by speed. Equals 0.25 hour. And 0.25 hour equals 15 minutes ( times 60 )
Tell me if thats right !
There 13 yellow cards, 6 blue, 10 red, 8 green cards in a stack of cards turned face down. Once a card is selected, it is not replaced. Find P(2 blue cards). Please be specific with your answer.
Answers
Answer:
5/222
Step-by-step explanation:
you need to add all the cards together first
13 + 10 + 8 + 6 = 37
then you take out 1 card to find the first probability of the blue card (there are 6 blue cards out of 37)
so 6/37
that will be your first probability
then for the 2nd probability, you will have 1 less card grom the deck making it only 36 cards (after taking out the first one, there will be only 5 blue cards left)
making it 5/36
that will be the 2nd probability
then you multiply both these probabilities to find the answer
6/37 × 5/36 = 5/222
Match the key features of functions terms to their corresponding definitions.
Answers
The key features of the above given functions are correctly matched to their corresponding definition.
Definition of termsNegative sections of the graph: They are the parts where the graph is below the x-axis. That is option C.End behaviour: This is what happens to the graph on the far left or far right. That is option E.Positive sections of the graph: This is the parts where the graph is above the x-axis. That is option D.Intercepts: This is the points where the graph crosses an axis. That is option BRelative extrema: This is the points of relative minimum or maximum in a graph. That is option A.Learn more about graphs here:
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please answer these questions
Answers
Answer:12
Step-by-step explanation:
Answer:
8. -3, 16
9. -3, 4.5
Step-by-step explanation:
See attached worksheet.
3x 5y = 78 2x - y = 0 the point of intersection of the lines has an x-coordinate of _____. 78 6 -6
Answers
The supplied lines' point of intersection has the x coordinate is 6.
What is coordinate geometry?A coordinate system is a method for determining how to position points or other geometrical objects on a manifold, such as Euclidean space, uniquely using one or more numbers, or coordinates.
The x coordinate of the location where the ensuing lines intersect must be chosen.
3x + 5y = 78 ...........................(1)
2x - y = 0 ...............................(2)
The given system of equations must be solved in order to determine the x coordinate of the site of intersection.
Equation (ii) provides us with
2x = y
y = 2x ........................(3)
Equation I yields the result when the value of y from equation (iii) is substituted.
3x + 5(2x) = 78
3x + 10x = 78
13x = 78
x = 78/13
x = 6.
As a result, the supplied lines' point of intersection has the x coordinate 6.
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I understand that the question you are looking is :
3x 5y = 78 2x - y = 0 the point of intersection of the lines has an x-coordinate of _____.
A. 7
B.8
C. 6
D. -6
Mrs. kelley asked her students to plot the number of books they read over the summer. a dot blot titled books read over the summer goes from 0 to 7. 0 has 1 dot, 1 has 3 dots, 2 has 6 dots, 3 has 2 dots, 4 has 3 dots, 5 has 1 dot, 6 has 2 dots, and 7 has 0 dots. using the dot plot, what was the total number of students that plotted the number of books they read? 3 6 17 18
Answers
The total number of students that plotted the number of books they read was 18, making the 4th option, a correct choice, using the dot plot.
Any data that may be shown as dots or tiny circles is called a dot plot. Given that the height of the bar created by the dots indicates the numerical value of each variable, it is comparable to a bar graph or a simple histogram. Small amounts of data are shown using dot plots.
In the question, we are informed that Mrs. Kelley asked her students to plot the number of books they read over the summer. a dot plot titled books read over the summer goes from 0 to 7. 0 has 1 dot, 1 has 3 dots, 2 has 6 dots, 3 has 2 dots, 4 has 3 dots, 5 has 1 dot, 6 has 2 dots, and 7 has 0 dots.
We are asked to find the total number of students that plotted the number of books they read using the dot plot.
The dot plot is attached to the solution.
The total number of students = The total number of dots = 1 + 3 + 6 + 2 + 3 + 1 + 2 + 0 = 18.
Thus, the total number of students that plotted the number of books they read was 18, making the 4th option, a correct choice, using the dot plot.
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Write 304.9% as a decimal.
Answers
Answer:
3.049
Step-by-step explanation:
Move the decimal place in 304.9% to the left two places in order to convert from a percentage to a decimal. 3.049 is the answer.
Brainliest, please :) Hope this helps!
50 POINTS !! Charlotte has a map of the village. The scale on the map is such that 1cm represents 25m.
a) On the map, the church is 7cm from the village store. What is the real distance from the church to the village store?
b) Charlotte calculates her car is parked approximately half a kilometer from the church. On the map, how many cm would represent this distance?
Answers
Answer:
a) 175 m
b) 20 cm
Explanation:
scaled size → actual size
1 cm represents 25 m
a)
In the scaled size on the map, the distance from church to village is 7 cm.
Then actual size,
1 cm → 25 m
7 cm → (25 × 7) m
7 cm → 175 m
b)
half a kilometer = 0.5 km = 500 m
Then scaled size,
25 meter → 1 cm
500 meter → 500/25 cm = 20 cm
The number 20 is multiplied either by 4 or by 5, then the product is increased either by 3 or by 5, and then the sum is divided either by 6 or by 7. What is the final quotient, if it is a natural number?
Answers
Given u=(-12,-5) and v=(3,9) what is proj v u?
Answers
[tex]\frac{(-12)(3)+(-5)(9)}{3^2 + 9^2} \langle 3, 9 \rangle \\ \\ =-\frac{9}{10} \langle 3, 9 \rangle \\ \\ =\langle -\frac{27}{10}, -\frac{81}{10} \rangle[/tex]
So, the correct answer is Option 1.
PLLLLEASE ASAP GUYS PLEASEE OMG
Answers
Answer:
27/30
Step-by-step explanation:
9/10 x3 to both sides = 27/30
Answer:
[tex]\dfrac{27}{30}[/tex]
Explanation:
In a normal fraction such as [tex]\frac{a}{b}[/tex], a is the numerator and b is the denominator.
Here the given fraction is [tex]\frac{9}{10}[/tex], to rewrite the fraction with a denominator of 30. Multiply both the numerator and denominator by 3.
[tex]\rightarrow \dfrac{9}{10}[/tex]
[tex]\rightarrow \dfrac{9\:\times\:3}{10 \:\times \: 3}[/tex]
[tex]\rightarrow \dfrac{27}{30}[/tex]
Both the fractions are equivalent to each other.
Which of the graphs below represents the equation 8x-y=-4?
Answers
Answer:
Graph X
Step-by-step explanation:
First, convert the equation into slope-intercept form. The first step is the bring the x to the right side by subtracting 8x from both sides: -y=-8x-4. Now multiply both sides by -1: y=8x+4. Now, if you know about the slope-intercept form, you'll know that 4 is the y-intercept and that [tex]\frac{8}{1}[/tex] is the slope. 8 is the rise and 1 is the run, so the answer is graph X.
Please help me if you can
The time, t in seconds that it takes a car to travel a quarter-mile when starting from a full stop can be estimated by using the formula:
[tex]t=5.825\sqrt[3]{w/p}[/tex]
Where w = weight of the car
p = power delivered by the engine in horsepower (hp)
If the quarter-mile time for a 3,590-pound car is 13.4 s, how much power does its engine deliver? Round to the nearest pound.
Two students solved this problem. Natasha’s answer was 295 hp and Daniel’s was 679 hp. Why was Daniel wrong? Show each step that led Daniel to the wrong answer
Answers
Step-by-step explanation:
Plug in known values
[tex]13.4 = 5.825\sqrt[3]{\frac{3590}{p}}\\[/tex]
Divide both sides by 5.825
[tex]2.3004 = \sqrt[3]{\frac{3590}{P}}\\[/tex]
Cube both sides
[tex]12.1738 = \frac{3590}{P}[/tex]
Multiply both sides by P
[tex]12.1738P = 3590[/tex]
Divide both sides by 12.1738
[tex]P = 294.895[/tex]
Round to nearest hp
[tex]P = 295[/tex]
So if you look at the radical, it's possible for it to be mistake for a square root, and not a cube root. This was Daniels mistake, so his steps were
[tex]13.4 = 5.825\sqrt[3]{\frac{3590}{p}}\\[/tex]
Divide both sides by 5.825
[tex]2.3004 = \sqrt[3]{\frac{3590}{P}}\\[/tex]
Square both sides
[tex]5.29197 = \frac{3590}{P}[/tex]
Multiply both sides by P
[tex]5.29197P = 3590[/tex]
Divide both sides by 5.29197
[tex]p\approx 678.385[/tex]
He also probably rounded during his steps, which would explain how he got 679 instead of 678 when rounding in the final, but either way his answer is completely off, and this is due to him mistakenly thinking the cube root was a square root.
Alex travels 46
miles per hour for
3.2 hours. How far
has he gone?
Answers
Answer: 147.2 miles
Step-by-step explanation:
We can answer this by knowing the formula [tex]speed=\frac{distance}{time}[/tex]. Here, the speed is 46 miles/hour and the time is 3.2 hours. Let's put these values into the formula and solve for distance.
[tex]46=\frac{distance}{3.2}\\46*3.2=\frac{distance}{3.2}*3.2\\d=147.2[/tex]
Alex traveled 147.2 miles.
Find the area of the irregular figure.
6 in.
13 in.
12 in.
5 in.
4 in.
4 in.
A = [? ]in.² please explain why or how you got the answer for future questions I only have so many points
Answers
Answer:
153 in²
Step-by-step explanation:
Area of irregular figure[tex]\sf \boxed{\text{\bf Area of rectangle = length * width}}[/tex]
[tex]\sf \boxed{\text{\bf Area of square = side *side}}[/tex]
Figure I:
length = 12 in
width = 6 in
Area of figure I = 12 * 6
= 72 in²
Figure II:
length = 13 in
width = 5 in
Area of figure II = 13 * 5
= 65 in²
Figure III:
side = 4 in
Area of figure III = 4 * 4
= 16 in²
Area of irregular shape = 72 + 65 + 16
= 153 in²
PLEASE HELP ITS MATH PLEASE
Answers
Answer:
y=[4]x + [12]
Step-by-step explanation:
Remember that parallel lines have identical slopes; and to make a line which passes through a point we will use point-slope form.
Familiarize yourself with point-slope form:
[tex]y-y1=m(x-x1)[/tex]
If the line is parallel to [tex]y=4x+11[/tex] the slope must be 4.
[tex]y-y1=4(x-x1)[/tex]
And we know the point it must pass through is (-2,4), so we can fill those values in too.
[tex]y-4=4(x+2)[/tex]
Now all we have to do is solve for y:
[tex]y-4=4(x+2)\\y-4=4x+8\\y=4x+12[/tex]
Answer:
[tex]y = 4x + 12[/tex]
Step-by-step explanation:
The solution is in the attached image
The time allotted for the Math test for 2 3/4 hours. Emma completed the test 1/2 of an hour earlier. How long did it take Emma to complete the test?
Answers
1/2h=0.5h
2.75h-0.5h=2.25
2.25h=2 1/4h
Or
1/2h•2=2/4h
2 3/4h-2/4h=2 1/4h
It took Emma 2 1/4 hours to complete the test.
Find the surface area of the composite figure.
8 cm
6 cm
7 cm
8 cm
SA =
6 cm
[?] cm²
9 cm
6 cm
Answers
Answer:
382 cm²
Step-by-step explanation:
Front face + Back face:
A = 2(a + b)h/2
A = 2(14 cm + 8 cm)(7 cm)/2
A = 154 cm²
Left face:
A = 7 cm × 6 cm = 42 cm²
Right face:
A = 9 cm × 6 cm = 54 cm²
Bottom face:
A = 14 cm × 6 cm = 84 cm²
Top face:
A = 6 cm × 8 cm = 48 cm²
Total surface area =
= (154 + 42 + 54 + 84 + 40) cm²
= 382 cm²
Gareth pays $ 60 for 9 m of climbing rope. how much will sophie pay for 15 m at the same store? $
Answers
Sophie will pay money equivalent to $ 100 for 15 m at the same store.
The term "money" in mathematics refers to a form of payment, such as bills, coins, and demand deposits, that is used to purchase goods and services. Money is used to pay for the worth or price of an item or service.
A country's monetary system is referred to as its currency.
In the case of Gareth,
Money paid for 9 m of climbing = $ 60
Money paid per m of climbing = $ 60/9
Thus, money paid by Sophie for 15 m of climbing = 15 * 60/9
= $ 100
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Simplify the expression 120x^3/18xy
Answers
x^3 / xy = x^2 / y
20x^2 / 3y
uhh so i totally forgot but are negative numbers smaller than positives and lets say -1.8, -9, -4.2 which would be bigger
Answers
Answer:
-1.8
Step-by-step explanation:
its bigger than -9 and -4.2
the length of a new rectangular playing field is 3 yards longer than quadruple the width. if the perimeter of the rectangular playing field is 586 yards, what are its dimensions?
Answers
Answer:
length = 235 yd
width = 58 yd
Step-by-step explanation:
Let the width be W.
L = 4W + 3
perimeter = 2(L + W)
perimeter = 2(4W + 3 + W)
perimeter = 2(5W + 3) = 10W + 6
We are told the perimeter = 586 yd
10W + 6 = 586
10W = 580
W = 58
L = 4W + 3 = 4(58) + 3 = 232 + 3 = 235
length = 235 yd
width = 58 yd
Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to two decimal places where appropriate.) sin theta = 1/2 Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to two decimal places where appropriate.) cos theta = -1
Answers
The solution of the given equation is :
cosθ = 1/2 when θ = π/3 + 2kπ or 5π/3 + 2kπ
cosθ = -1 when θ = π + 2kπ
Since cos2θ + sin2θ = 1, sin2θ = 1 - cos2θ
So, the given equation is equivalent to 2(1 - cos2θ) - cosθ = 1
-2cos2θ - cosθ + 1 = 0
2cos2θ + cosθ - 1 = 0 (multiplying the entire equation by -1)
(2cosθ - 1)(cosθ + 1) = 0 (taking common)
cosθ = 1/2 or cosθ = -1 (on equating it to zero)
cosθ = 1/2 when θ = π/3 + 2kπ or 5π/3 + 2kπ
cosθ = -1 when θ = π + 2kπ
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Use the given data set to complete parts (a) through (c) below. (Use α=0.05.)
Answers
1. The value of the linear correlation coefficient r is given as 0.8159. The correct option is a. There is insufficient evidence to support the claim of a nonlinear correlation between the two variables
2. The scatterplot reveals a distinct pattern that is not a straight-line pattern.
What is the linear correlation coefficient?This is the data that we get when we try to get the existing relationship that is in existence between the variables that are used in a regression equation.
The value of r was calculated using a statistical tool online. The graph showed us it was not a straight line. The value of the r = 0.8159
The results of the test is in the attachment
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Someone please explain.50 points available.Thankyou so much!
Answers
Answers:
a) 49 square tiles - did the work on paper.
b) 83 circular tiles - did the work on paper.
c) C: could be even or odd - all patterns had both even and odd amounts of square and circular tiles.
Step-by-step explanation:
I did all the work on paper it took a while to do it. pls mark brainliest
How many solutions, in positive integers less than 10, does the equation x + y + z = 20
have?
Answers
[tex]\huge \mathbb{ \underline{EXPLANATION:}}[/tex]
Given:▪ [tex] \bold{\: x + y + z = 20}[/tex]
[tex]\\[/tex]
◆ As we have a [tex]\small\bold{sum \: of \: three \: integers}[/tex] equal to 20 and less than 10, we know the integers have to be between 2 and 9 (1 and 0 don't apply because the sum wouldn't be equal to 20 between three integers.
[tex]\large\tt{Note:}[/tex]
The first value would be X value, second Y value and third Z value.
[tex]\huge \mathbb{ \underline{ANSWER:}}[/tex]
[tex] \large\boxed{ \sf 36 \: solution}[/tex]
The chart below shows conversion between kilometers and miles.
Conversion Chart
Kilometer
Miles
2
1.2
7
4.2
20
?
30
18
What is the missing value in the table?
Answers
Answer:Answer:
12 (D)
Step-by-step explanation:
The first one is 2:1.2 so i did x10 on it to get 20:12.
Step-by-step explanation:Oh and hey if it's right u have to make me brainliest i need award