Answers
Answer:
If a set of points is a function, the elements of the set must have the same number of elements.
For example, if the function is from A→B, the elements must be ordered pairs.
So Y is not a function.
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If Y is in fact {(2, 6), (3, 1), (4, 1), (5, 6)}
then Y is a function, because each of the first coordinates appears only once.
In functional notation, we have f(2)=6, f(3)=1 etc....
remark: if a first coordinate is repeated, for example if we have (2, 6) and also (2, 8)
this would mean f(2)=6, but also f(2)=8, which means f is not a function.
Step-by-step explanation:
Related Questions
Find the slope-intercept equation of the line that
passes through (0,3) and has a slope of 1/2
Answers
Answer:
y=1/2x+3
Step-by-step explanation:
A box is filled with 4 red crayons, 8 blue crayons, and 2 yellow crayons.
A crayon is chosen at random from the box. Find the probability that it is a red or a yellow crayon.
Write your answer as a fraction in simplest form.
O
Х
?
Answers
Answer:
6/14 simplified to 3/7
Step-by-step explanation:
Solved it
write -12 in a and b form
Answers
Answer:
whats ur question i dont understand
Step-by-step explanation:
idu
Answer:
thanks fOr the points
Step-by-step explanation:
A quadrilateral with two pairs of consecutive sides congruent and no opposite sides congruent is called a(n)
-kite
-isosceles
-mid segment
-leg
-base
-base angle(s)
-trapezoid
Answers
Answer:
a kite
Step-by-step explanation:
What the solution to -3=-3+5x+3x
Answers
Explanation:
[Add three to both sides -> -3+3=-3+5x+3x+3]
[Simplify -> 0=5x+3x]
[Switch sides -> 5x+3x=0]
[Add common -> 8x=0]
[divide both sides by 8]
[simplify again]
ASAP PLS HELP DUE TODAY. WILL GIVE BRAINLIEST IF A GOOD ANSWER EXPLENATION AND CORRECT ANSWER
Rewrite 7 − 8 using the additive inverse and display the new expression on a number line.
Select one:
a.
7 + (−8)
An image of a horizontal number line is shown with labels from negative 2 to positive 8. An arrow begins at 0 and ends at 7. Another arrow begins at 7 and ends at negative 1.
b.
7 + 8
An image of a horizontal number line is shown with labels from 0 to 15. An arrow begins at 0 and ends at 7. Another arrow begins at 7 and ends at 15.
c.
7 − (−8)
An image of a horizontal number line is shown with labels from 0 to 15. An arrow begins at 0 and ends at 7. Another arrow begins at 7 and ends at 15.
d.
8 − 7
An image of a horizontal number line is shown with labels from negative 2 to positive 8. An arrow begins at 0 and ends at 8. Another arrow begins at 8 and ends at 1.
Answers
Answer:
[tex]7 + (-8)[/tex]
Step-by-step explanation:
Given
[tex]7 - 8[/tex]
(a): Write as additive inverse.
An additive inverse is of the form a + (-b)
In this case:
[tex]a = 7[/tex]
[tex]b = -8[/tex]
So, the expression can be represented as:
[tex]7 + (-8)[/tex]
(b): Number line representation
When the expression in (a) is solved.
The result is:
[tex]7 - 8 = 7 + (-8) = -1[/tex]
This means that the number line must accommodate 7 and -1.
Having said that, options (b) and (c) are out because their range is 0 to 15 and this excludes -1.
Option (d) is a wrong representation of [tex]7 - 8[/tex]
Hence, (a) is correct
I need help please. This is due in 40 minutes:(
Given the diagram below, solve for x and y.
Answers
Answer:
x=14, y=37
Step-by-step explanation:
We know that (4y-10)° and 3x° are supplementary angles, meaning the total sum of the angles add up to 180°. (4y-10)° is also corresponding to the blank angle below (9x+12)°, making it a vertical angle. Since (4y-10)°=(9x+12)° because they are vertical angles, then that means we can solve for x:
Original Equation: (4y-10)°+3x°=180
New Equation: (9x+12)°+3x°=180
9x+12+3x=180
12x+12=180
12x=168
x=14
So x is 14
Because x=14, then y is:
4y-10+3(14)=180
4y-10+42=180
4y+32=180
4y=148
y=37
So y is 37
Simplify:
3(8) ° •(3)-2
A -216
B 24/9
C -27
D 1/3
(help please) :(
Answers
Answer:
C I think
Step-by-step explanation:
Enter an equation for the absolute vakre function whose graph is shown.
Answers
Average Weekly Earnings The average weeklyearnings in dollars for various industries are listedbelow. Find the percentile rank of each value.
804 736 659 489 777 623 597 524 228
For the same data, what value corresponds to the 40th percentile
Answers
Answer:
a. 228- 6th, 489- 17th, 524- 28th, 597- 39th, 623- 50th, 659- 61th, 736- 72th, 777- 83th, 804- 94th
b. 597
Step-by-step explanation:
arrange the data:
228, 489, 524, 597, 623, 659, 736, 777, 804
a. percentile = ((number of items below position + 0.5)/ number of items ) 100
for 228 = (0+0.5/ 9) 100 = 6th
for 489 = (1+0.5/ 9) 100 = 17th
for 524 = (2+0.5/ 9) 100 = 28th
for 597 = (3+0.5/ 9) 100 = 39th
for 623 = (4+0.5/ 9) 100 = 50th
for 659 = (5+0.5/ 9) 100 = 61th
for 736 = (6+0.5/ 9) 100 = 72th
for 777 = (7+0.5/ 9) 100 = 83th
for 804 = (8+0.5/ 9) 100 = 94th
b. The corresponding value for the 40th = number of item( percentile)/ 100
= 9( 40) / 100 = 3.6 approximately 4th which is 597
mary will spin the spinner below 150 times. about how many times should mary expect the spinner to land on a number greater than 5
Answers
Answer:
where is the spinner at least attact an attachment so i can see the spinner and how the odds of likely it can turn out
Step-by-step explanation:
A 2-liter bottle of spring water costs $2.02. A 3-liter bottle of the same water costs $2.79.
Which is the better deal? ..
Answers
PLEASE HELP I WILL GIVE 100 points
Using the drawing below to answer the questions that follow
Part A what is the scale factor used when going from the larger rectangle to smaller one?
Part B
What is the length of missing side?
PLEASE HELP
Answers
Answer: the scale factor is 1/2
And the missing side is 5.5
Step-by-step explanation:
The larger triangle is twice the smaller triangle
The scale factor is 1/2 and the length of the missings side is 5.5 after using the concept of the scale factor.
What is a scale factor?The ratio among comparable dimensions of an object and a model with that object is known as an exponent in algebra. The replica will be larger if the scale factor is a whole number. The duplicate will be lowered if the step size is a fraction.
It is given that:
The two rectangles are shown in the picture:
Part A what is the scale factor used when going from the larger rectangle to the smaller one?
The scale factor = 8/16 = 1/2
The length of the missings side = 1/2(11) = 5.5
Thus, the scale factor is 1/2 and the length of the missings side is 5.5 after using the concept of the scale factor.
Learn more about the scale factor here:
brainly.com/question/22312172
#SPJ2
what is greater -.89 or .4
Answers
Answer:
.89
Step-by-step explanation:
.89 is greater because it is closer to a whole than .4, which makes .89 greater.
Yoshi's yogurt contains 15 calories per ounce. How many calories are in a 5-ounce container of Yoshi's yogurt?
Answers
Answer:
The answer is 15*5=75.
Step-by-step explanation:
So to get the answer you need to know how many calories are in a ounce of yogurt which is 15. Then you you multiply 15*5 to get how many calories are in a 5 ounce of yogurt. When you solve 15*5=75, use either a calculator or solve it down on paper. To know that you got the right answer for 15*5= 75 please punch it in on a calculator. I hope this helps if you need any more clarificatio please comment! Thanks!
A plumber uses the expression 48 + 25h to determine the number of dollars to charge each customer. If h= 2.5, how much does the customer pay
Answers
Answer:
$110.5
Step-by-step explanation:
48 + 25(2.5)
48 + 62.5
=110.2
Answer:
The answer is 110.5
Step-by-step explanation:
48+25(2.5)=110.5
which equation below has a slope of 1/4?
Answers
Answer:
The answer is 1, 2, and 3 only
Step-by-step explanation:
Math
Way
The equations which have slope 1/4:
ii. (y - 3.5) = 0.25(x - 2.75)
iii. 5x - 20y = 32
What is the equation of line?The equation of a straight line is a relationship between x and y coordinates, The general equation of a straight line is y = mx + c, where m is the slope of the line and c is the y-intercept.
The slope-intercept form of a linear equation is y = mx + b, where m is the slope.
I. y = x - 5 is in slope-intercept form, so we can see that its slope is 1.
II. (y - 3.5) = 0.25(x - 2.75) can be rewritten in slope-intercept form as y = 0.25x + 2.1875. Therefore, its slope is 0.25 or 1/4.
III. 5x - 20y = 32 can be rewritten in slope-intercept form as y = (1/4)x - (4/5). Therefore, its slope is 1/4.
IV. 5x + 20y = 32 can be rewritten in slope-intercept form as y = (-1/4)x + (4/5). Therefore, its slope is -1/4.
So, only equations II, and III have a slope of 1/4.
To know more about Line check:
https://brainly.com/question/17188072
#SPJ3
the ratio of two numbers is 4:5 after adding 20 to the smaller number and subtracting 20 from the greater number the ratio becomes 14:13 find the number please help!
Answers
Answer:
The numbers are 120 and 150.
Step-by-step explanation:
Please see the attached pictures for the full solution.
Javier teaches yoga classes at his community center. In a 60-minute class last night, he taught 30 poses. Today, he has a 30-minute class. If he teaches at the same rate, how many poses will Javier teach in today's class?
Answers
Answer:
15
Step-by-step explanation:
fifteen is half of 30
Express the function G in the form f ∘ g ∘ h
G(x) = 3/(7+√x)^2
Answers
i need help on this question and i will mark brainlist
Answers
Answer:
$11.40
Step-by-step explanation:
just do 1.90 x 6 = 11.40
I’m pretty sure it’s $11.40
Explanation: You have to multiply both numbers.
Hope I helped!
PLZ HELPPPPPP
The sequence of transformations that can be performed on quadrilateral ABCD to show that it is congruent to quadrilateral GHIJ is a ________ followed by a _______ .
Answers
Answer:
The sequence of transformations that can be performed on quadrilateral ABCD to show that it is congruent to quadrilateral GHIJ is a 90-degree counterclockwise rotation about point A followed by a reflection across the y-axis and a translation 20 units down .
Step-by-step explanation:
Answer:
The sequence of transformations that can be performed on quadrilateral ABCD to show that it is congruent to quadrilateral GHIJ is a
90-degree counterclockwise rotation about point A
followed by a
reflection across the y-axis and a translation 20 units down
Step-by-step explanation:
If the half life of a substance is 4 weeks, how long will it take for 400 mg of this substance to decay to 25 mg?
Answers
Step-by-step explanation:
what is meant by mg in this question
Find the sum. Write your answer in simplest form. 3/7 + 2/3
Answers
Answer:
1 2/21
Step-by-step explanation:
We start out with:
3/7 + 2/3
In order to add them together, they must have an equal denominator. An easy way to find an equal denominator is the cross method. We divide 7 by 3 and 3 by 7, giving us a denominator of 21:
3/21 + 2/21
But what about the numerators? You do the same thing as before (multiplying by the other's denominator). Now we have:
9/21 + 14/21
We add both together (the denominator stays the same) and we get 23. 23/21 is correct but not in simplest form. We remove 21 from the numerator (because it is a whole) and finally get:
1 2/21!
≧◡≦
Mocha here! If this answer helped you, please consider giving it brainliest because I would appreciate it greatly. Have a wonderful day!
1 1/3 divided by 3/4
Answers
Answer:
1 7/9
Step-by-step explanation:
Could i have branliest please and a heart
Step-by-step explanation:
11/ 36
hope it helps!
.....
What is the predicted value of fuel efficiency (in miles per gallon) for a car with a 2.5 cubic liters engine? Round your answer to two decimals, if needed.
Answers
Answer:
25.92
Step-by-step explanation:
Fuel efficiency is the measure or effort that is required to convert the chemical energy in the fuel to the kinetic energy which the cars needs to move. It is meant by how good or effectively the fuel is utilized by the vehicle. It is the ability of the engine to extract more energy from the fuel.
In the context, the size of the engine is 2.5 cubic liters. Then the predicted value of the fuel efficiency will be 25.92 miles per gallon.
solve (x - 3)^2 = 81 quadratic equation
Answers
Answer:
x=12
Step-by-step:
Square root both sides to get
x-3=9
Then take 3 to the other side
x=9+3
x=12
There are 3 times as many dogs as cats.
If the total number of dogs and cats is 16, how many dogs are there?
Answers
Answer:
there are 12 dogs.
Step-by-step explanation:
d= dogs now plug in the 4 into your equation.
c= cats d=3(4)
d+c=16 d=12
3c+c=16
4c=16 SO THEREFORE THERE ARE 12 DOGS :)
c=4
WILL GIVE BRAINLEST PLZZ HELP MEEE
Answers
Answer:
option 3
Step-by-step explanation:
hope it helps!!!!!
Answer:
Each line is 1/8 as you can see the fouth line is 4/8 in both x and y
P is 5 lines to the left and 3 lines.
If each line is 1/8:
In the x: -5/8
In the yy: 3/8
P=(-5/8,3//8)
Need help ASAP! What is the value of x?
Answers
Answer:
98 degrees.
Step-by-step explanation:
Add 53 and 45 to get 98 degrees. This is the exterior angle theorem, which states that the exterior angle of a triangle is equal to the sum of the two opposite interior angles.