Answer:
ANSWER:
{(2,4),( 3, 6),(4, 8)} is a function
Given a relation in x and y, we say y is a function of x if for each element x in the domain, there is exactly one value of y in the range. It is a rule of correspondence between two nonempty sets, such that, to each element of the first is called domain, there correspondents one and only one element of the second is called range.
To determine whether it is function or not by using the vertical line test. If the graph passed to Vertical line test it is consider as function. The graph of function defines y as a function of x if no vertical line intersects the graph in more than one point.
The first set of ordered pairs is a function, because no two ordered pairs have the same first coordinates with different second coordinates for example ( -1, 2), ( 1, 0), (2, 1) . The second example is not a function, because it contains the ordered pairs (1,2) and (1,4). the first set is repeated . These have the same first coordinate and different second coordinates.
The range of a function is the complete set of all possible resulting values of the dependent variable (y, usually), after we have substituted the domain. The range is the resulting y-values we get after substituting all the possible x-values.
Q. Three years ago, the population of a certain species of bird was calculated at 20 birds per acre
This year, a biologist recorded a total of 47 birds in an area equal to 3.25 acres. By about what
percentage has the bird population in the biologist's sample decreased over the last 3 years, to
the nearest tenth?
A. 14.7%
B. 27.7%
C. 38.3%
D. 42.6%
E. 72.3%
Pablo uses 12.5 cups of flour to make 5 batches of muffins. How many
cups of flour did he use per batch?
2.5 cups
25 cups
2 cups
65 cups
Answer:
2.5 cups
Step-by-step explanation:
12.5÷5=2.5 cups
hope that helped :)
A football team carried out a report to see the impact of stretching on preventing injury. Of the 60 footballers in the squad 48 stretch regularly. Of those who stretch, 8 got injured last year. There was a total of 17 injured players last year.
The results can be presented in a frequency tree. What fraction of players who do stretch get injured?
Answer:
1 in every 6 players 1/6
8/48=1/6
Identify the terms, variables, coefficients and constant..
Expression: 7+5c-2k-15
Terms:
Variables:
Coefficients:
Constants:
Answer:
Terms: 7, 5c, 2k, 15
Variables: C, K
Co efficients: 5, 2
Constants: 7, 15
Which of the following are terms in this expression? Select all that apply.
1 + 10n + m
5m
4n
10n
7
Answer:
10n is the only term
Step-by-step explanation:
because other numbers are not in the equation
Choose 3 answers
A. Obtuse triangle
B. Isosceles triangle
C. Acute triangle
D. Scalene triangle
E. Right triangle
F. Equilateral triangle
Help !
Answer:
C:Acute traingle
Acute traingle
I know this triangle is equilateral and acute, but I'm not sure what the third choice would be.
Find the volume of the cylinder. Use 3.14 for pi.
HELP ME PLEASE !!!
Answer: 56.52
Step-by-step explanation:
V= 3.14(r)^2*h or numerically 3.14(3)^2*2 which equals 56.52
2 is multipled by the difference of a number and 4.
Answer:
4
Step-by-step explanation:
it is 4 because 4-2=2
2*2=4
Answer: 2(x - 4)
Step-by-step explanation:
There is a bag filled with 4 blue and 5 red marbles.
A marble is taken at random from the bag, the colour is noted and then it is replaced.
Another marble is taken at random.
What is the probability of getting 2 blues?
X/5+ 7 = y Solve for x
pls hurry
Answer:
x=5y-35
Step-by-step explanation:
whats A-84=747 in its simplest form
Answer:
A=747+84=831
Step-by-step explanation:
Plus 84 at both side
Answer: A=831
Step-by-step explanation: Hope this helps have a nice day! -Lily ^-^
Need help ASAP
Thankss + BRAINLIST only for correct answer
Answer:
(2,0)
Step-by-step explanation:
2x-y=4
Substitute x with 2, and y with 0.
2(2)-0=4
2 multiplied to 2 is 4, then subtracted to 0 would be 4, thus it is correct.
3x-y=6
Substitute x with 2, and y with 0.
3(2)-0=6
3 multiplied to 2 is 6, then 6 subtracted with 0 is 6, thus it is correct.
algebraic expression the sum of 12 and k
For which value of m is start fraction 4 over 16 end frction equals start fraction m over 24 end fraction a proportion? A. m = 6 B. m = 8 C. m = 12 D. m = 14
Answer:
A. M=6
Step-by-step explanation:
Basically, this question is asking you to find m if 4/16 = m/24.
First, 4/16 can be simplified to 1/4. This will make it easier to solve.
You now have 1/4 = m/24.
Multiply both sides by 24 to get 24/4 = m.
Simplify to get m = 6.
In the zoo, there are 12 elephants, 8 giraffes, 9 lions, 10 seals, and 16 otters.
What is the ratio of elephants to all the animals at the zoo?
Answer:
16/55
Step-by-step explanation:
If you add all the animals together then put it in fraction form you have 16/55
in a search engine, 40,000 searches are done every minute.
How many searches are done in an hour?
write your answer in standard index form
Answer:
2400000 in a hour
Step-by-step explanation:
40,000 × 60 = 2400000 you need to multiple 40,000 with 60 because there is 60 minutes in a hour
The Are the two Angles that are non-adjacent to the specified exteriors angle
The remote interior angles of a triangle are the two angles that are non-adjacent to the specified exterior angle.
If she would have left the money in the account for another nine months before with drawing how much interest would the account have earned
y is an irrational number between 3 and 4 . what is the value of y
Answer:
If a and b are two positive rational numbers such that ab is not a perfect square of a rational number, then ab is an irrational number lying between a and b.
So an irrational number between 3 and 4 is=3×4=3×4=3×2=23
B is the midpoint of AC, AB = 3x + 7, and BC = 2x + 10. Find AB, BC, and AC.
PLEASE HELP
Answer:
Step-by-step explanation:
Use the graph or table to write a linear function that relates y to x.
Determine whether the graph of the linear function is increasing,
decreasing, or constant.
Answer:
x=2
y=1
constant
Step-by-step explanation:
each function has a slope of 2
10) What is the area of the figure below? Round your answer to the nearest tenth (1 place
value) if needed.
Answer:
Step-by-step explanation:
Divide the figure into a rectangle and a triangle.
area of rectangle = 5×10 = 50 square units
area of triangle = 0.5×5×10 = 25 square units
total area = 50+25 = 75 square units
If £21 = 500 rubles, how many £ are in 780 rubles? Give your answer to 2 dp.
Answer:
£32.76
Step-by-step explanation:
21/500=0.042
780x0.042 = 32.76
huan's wage is £10.40 per hour l. he receives a 10% pay rise
Answer:
Step-by-step explanation:
10% of 10.40=1.04
10.40+1.04=11.44
In the triangle below, ∠Q is a right angle. Which ratio would be equivalent to the ratio of sin∠R?
a) cos∠Q
b) cos∠S
c) sin∠Q
d) sin∠S
Answer:
b) cos∠SStep-by-step explanation:
sin ∠R = SQ/SR
This is same as:
cos SCorrect option is b)
cos<Q
Lets do
[tex]\\ \sf\longmapsto sin<R=\dfrac{P}{H}[/tex]
[tex]\\ \sf\longmapsto sin<R=\dfrac{SQ}{SR}[/tex]
Now
[tex]\\ \sf\longmapsto cos<Q=\dfrac{B}{H}[/tex]
[tex]\\ \sf\longmapsto cos<Q=\dfrac{SQ}{SR}[/tex]
4. Look at the model. Write three equivalent fractions for the shaded part.
(3 pts)
Answer:
1/2,5/10,4/8
Step-by-step explanation:
half of the box is shaded.
this means that 1/2 is shaded.
also, there are 5/10 boxes shaded.
we can make up another one: 4/8
all of these can be reduced to 1/2.
Eliz spends $16.25 each month on song downloads. At this amount, how much will Eliz spend on song downloads after two years
?
Answer:
$390.00
Step-by-step explanation:
$16.25×24=390.00
=$390.00
Order the number from least to greatest -12, 3/25, -0.41
Answer:
-12, -0.41, 3/25
Step-by-step explanation:
Answer:
the answer is -12, -0.41, 3/25.
I'll mark you as the brainiest if you get this correct
thx xxx
Answer:
Multiply 3
Step-by-step explanation:
x-5= -4
what is the answer for x?
Answer:
x = 1
Step-by-step explanation:
by solving the equation we get ;
x -5 = -4x = -4 + 5x = 1Step-by-step explanation:
x = 1
hope it helps
Be happy and make happy