please help please
Which relations are functions? Select all that apply.
A. (3, 2), (-1, 7),(-3, 1), (0.9), (2, -4)
В.
х
-4
-2
у
9
12
15
c
x
1
2
3
4
y
2
4
6
13
D
Answers
Answer:
A and C
Step-by-step explanation:
For any relation to be considered a function, each domain value (x-value) must have exactly one range value (y-value). If a relation contains an x-value that has two or more y-value related/mapped to it, the relation is not a function.
Let's examine each option given.
Option A: each x-value has exactly one y-value related or assigned to it. Therefore, the relation is A FUNCTION.
Option B: the x-value, 4, has two y-values, 12 and 15 assigned to it. Therefore, the relation is NOT A FUNCTION.
Option C: each x-value has exactly one y-value related or assigned to it. Therefore, the relation is A FUNCTION.
Option D: the x-value, 1, has two y-values, -1 and 1 assigned to it. Also, x-value, 3, has two y-values, 2 and -2 assigned to it. Therefore, the relation is NOT A FUNCTION.
Related Questions
Please ANSWER Correctly The Question will be Placed first then the graphs will be placed in order for answer choices from A - D
Answers
Answer:
C
Step-by-step explanation:
Answer:
Option C
Step-by-step explanation:
By looking at the points for (x,y) in the tables, we notice that the only graph that has the points at (-1,-3), (1,2) and you can assume the other points will be on the graph from the table.
plsss help i especially need 4 & 5 pls ill give brainliest to right answer
Answers
Answer:
4. y = 15x
5. y = 0.375x ([tex]y=\frac{3}{8}x[/tex])
Step-by-step explanation:
15 * 1 = 15
6/16 = 0.375
Divide. Write your answer as a fraction or a mixed number in simplest form
8 2/3 • 1 7/9
Answers
The addition of the fraction 8 2/3 + 1 7/9 is 10 4/9.
What is a fraction?A fraction is simply a piece of a whole. The number is represented mathematically as a quotient where the numerator and denominator are split. In a simple fraction, the numerator as well as the denominator are both integers.
In this case, the addition of the fraction will be:
= 8 2/3 + 1 7/9
= 8 6/9 + 1 7/9
= 9 13/9
= 9 + 1 4/9
= 10 4/9
Learn more about fractions on:
brainly.com/question/17220365
#SPJ1
In the following activity, write an equation to represent each verbal statement, and use it to find the value of each unknown number. Then, put the solution values in order from smallest to largest. [Note: The smallest solution is "first", and the largest solution is "fifth".]
1. fourth
Half of a number is added to four. This sum is equivalent to negative one.
2. first
The sum of a number and three is divided by five. The result is negative two.
3. third
The difference between four times a number and five has a result of negative eight.
4. second
The difference between a number and five is multiplied by negative two. The
resulting product equals fourteen.
5. fifth
The sum of a number and two is equal to the quotient of six and negative four.
I WILL GIVE BRAINLEST
Answers
Answer:
First x=-13 (The sum of a number and three is divided by five. The result is negative two.)
Second x=-10 (Half of a number is added to four. This sum is equivalent to negative one.)
Third x=-3.5 (The sum of a number and two is equal to the quotient of six and negative four.)
Fourth x=3.25 (The difference between four times a number and five has a result of negative eight.)
Fifth x=12 ( The difference between a number and five is multiplied by negative two. The resulting product equals fourteen. )
Step-by-step explanation:
We will consider number = x
1. Half of a number is added to four. This sum is equivalent to negative one.
[tex]\frac{1}{2}x+4=-1[/tex]
Now solving to find value of x
[tex]\frac{1}{2}x+4=-1\\\frac{1}{2}x=-1-4\\\frac{1}{2}x=-5\\x=-5*2\\x=-10[/tex]
So, value of x=-10
2. The sum of a number and three is divided by five. The result is negative two.
[tex]\frac{x+3}{5}=-2[/tex]
Solving:
[tex]\frac{x+3}{5}=-2\\x+3=-2*5\\x+3=-10\\x=-10-3\\x=-13[/tex]
So, value of x=-13
3. The difference between four times a number and five has a result of negative eight.
[tex]4x-5=-8[/tex]
Solving:
[tex]4x-5=8\\4x=8+5\\4x=13\\x=13/4\\x=3.25[/tex]
So, value of x=3.25
4. The difference between a number and five is multiplied by negative two. The resulting product equals fourteen.
[tex](x-5)*-2=-14[/tex]
Solving
[tex](x-5)*-2=-14\\-2x+10=-14\\-2x=-14-10\\-2x=-24\\x=-24/-2\\x=12[/tex]
So, value of x=12
5. The sum of a number and two is equal to the quotient of six and negative four.
[tex]x+2=\frac{6}{-4}[/tex]
Solving:
[tex]x+2=\frac{6}{-4}\\x+2=-\frac{3}{2}\\x= -\frac{3}{2}-2\\x=\frac{-3-2*2}{2} \\x=\frac{-3-4}{2} \\x=\frac{-7}{2} \\x=-3.5[/tex]
So, value of x=-3.5
Now arranging based on values of x
x=-10, x=-13, x=3.25, x=12, x=-3.5
First x=-13 (The sum of a number and three is divided by five. The result is negative two.)
Second x=-10 (Half of a number is added to four. This sum is equivalent to negative one.)
Third x=-3.5 (The sum of a number and two is equal to the quotient of six and negative four.)
Fourth x=3.25 (The difference between four times a number and five has a result of negative eight.)
Fifth x=12 ( The difference between a number and five is multiplied by negative two. The resulting product equals fourteen. )
I need help and the time is running please help
Answers
Answer:
I think its B
Step-by-step explanation:
I'm sorry if I'm wrong. I'm busy
Answer:
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Which equation has x = -i and x = = 21v3 as two of its solutions?
Answers
Answer:
The equation in option A is correct.
Step-by-step explanation:
Given the equation
[tex]\:y=x^4+13x^2+12[/tex]
Let us find the solution by setting y=0
[tex]x^4+13x^2+12=0\:\:\:\:\:[/tex]
[tex]\mathrm{Rewrite\:the\:equation\:with\:}u=x^2\mathrm{\:and\:}u^2=x^4[/tex]
[tex]u^2+13u+12=0[/tex]
if [tex]ab=0\:\mathrm{then}\:a=0\:\mathrm{or}\:b=0\:\left(\mathrm{or\:both}\:a=0\:\mathrm{and}\:b=0\right)[/tex]
[tex]u+1=0\quad \mathrm{or}\quad \:u+12=0[/tex]
[tex]u=-1,\:u=-12[/tex]
[tex]\mathrm{Substitute\:back}\:u=x^2,\:\mathrm{solve\:for}\:x[/tex]
[tex]x^2=-1,\:x^2=-12[/tex]
solving
[tex]x^2=-1[/tex]
[tex]\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}[/tex]
[tex]x=\sqrt{-1},\:x=-\sqrt{-1}[/tex]
[tex]x=i,\:x=-i[/tex] ∵ [tex]\:\sqrt{-1}=i[/tex]
solving
[tex]x^2=-12[/tex]
[tex]\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}[/tex]
[tex]x=\sqrt{-12},\:x=-\sqrt{-12}[/tex]
[tex]x=2\sqrt{3}i,\:x=-2\sqrt{3}i[/tex]
Hence, the solutions are:
[tex]x=i,\:x=-i,\:x=2\sqrt{3}i,\:x=-2\sqrt{3}i[/tex]
Therefore, the equation in option A is correct.
This wasn’t helpfull at all.
Answers
Answer:
Yeah
Step-by-step explanation:
Answer:
w h a t
Step-by-step explanation:
f(x) = x2. What is g(x)?
Answers
Answer:
its C. yw
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
i did the test
We are planning a reception for our daughter. The hall that we are renting charges a $90 cleanup fee. In addition to the cleanup fee, they charge $29 per guest for food and drinks.
If we have $3,100.00 available, what is the maximum number of guest we can invite without going over our budget?
Answers
Answer:
The equation is y = 29x + 90. So, if you plug in 3,100.00 for y.
3,100.00 = 29x + 90
3,100.00 - 90 = 29x
3,010.00 = 29x
3,010.00/29 = 29x/29
x = 103 guests
How much higher is 500 than -400m
Answers
Answer:
Obvious 500 is higher than -400m
3. Ms. Turner's garden has side lengths of V17 yards and V24 yards.
Mr. Webster's garden has side lengths of V5 yards and 138 yards.
Compare the areas of the gardens. Decide whose garden is larger and by how much. Be sure to
explain your thinking. (A = lw)
+
10:04 PS
Answers
Answer:
Mr. Webster's garden is greater than Ms. Turner's garden by 282 sq. yards.
Step-by-step explanation:
Representing the length of the garden by l and width of the garden by w.
For turner's garden, given that l= 24 yards and w= 17 yards.
As the area, A, of the rectangular garden having length l and width w is
So, the area of Ms. Turner's garden, = 24x17=408 sq. yards
For turner's garden, given that l= 5 yards and w= 138 yards.
So, by using equation (i),
the area of Mr. Webster's garden, = 5x138=690 sq. yards
Here, [tex]A_2 > A_1[/tex], and
= 690-408= 282 sq. yards.
Hence, Mr. Webster's garden is greater than Ms. Turner's garden by 282 sq. yards.
Every week, Hector’s 20 hours earns $210.00. He earns a constant amount of money per hour.
Part B
Write an equation that can be used to determine Hector's earnings, in dollars, m, for h hours of work.
Answers
Answer: 20 weeks in 1 week
in 2 weeks 40
Step-by-step explanation:
This proves that the equation is true
%84, percent of Astrid's books are fiction. What fraction of Astrid's books are fiction?
Answers
Answer:
the fraction would be
84/100
Answer:
84/100
Step-by-step explanation:
84% is out of a hundred.
isolate the variable on the following problem. show your work.
11z= 4
Answers
z = 4/11
Z= 4/11 is the answer in fraction form
Question 6 (5 points)
(03.02 MC)
What is the length of the third side of the window frame below? (5 points)
(Figure is not drawn to scale.)
30 inches
36 inches
50 inches
75 inches
Answers
Answer:
30 inches
Step-by-step explanation:
using a^2+b^2=c^2
72^2=5184
30^2=900
5184+900=6084
√6084=78
Answer:
30
Step-by-step explanation:
Simplify Each Expression By Combining Like Terms.
1) 11x+9x
2) 8y-7y
3) 5t-7t
4) -n+4n
5) 5w^2 + 12w^2
6) 2x^2 - 9x^2
7) -4y^2 + 9y^2
8) 6c-4 + 2c-7
9) 5-3x+y+6
Answers
Answer:
1) 11x + 9x
= 20x
2) 8y - 7y
= 1y
= y
3) 5t - 7t
= -2t
4) -n + 4n
= 3n
5) 5w² + 12w²
= 17w²
6) 2x² - 9x²
= -7x²
7) -4y² + 9y²
= 5y²
8) 6c - 4 + 2c - 7
= 8c - 11
9) 5 - 3x + y + 6
= 11 - 3x + y
Mrs. Coughlin bought 2.25 pounds of turkey at $4.96 per pound and 0.75 pound of provolone cheese at $5.20 per pound. If Mrs. Coughlin gave the cashier $20, how much change will she receive?
Answers
2.25x4.96=$11.16
.75x5.20=$3.90
11.16+3.90=15.06
20-15.06=4.94
=====================================================
Work Shown:
She paid 2.25*4.96 = 11.16 for the turkey
She paid 0.75*5.20 = 3.90 for the cheese
In total, the two amounts add to 11.16+3.90 = 15.06
The amount of change she'll get is 20 - 15.06 = 4.94 dollars
To calculate change quickly in your head, notice how the jump from 6 cents to 100 cents is 100-6 = 94 cents. So that moves us from $15.06 to $16, and the rest needed is $4. So that's how we get the overall change to be $4.94.
After school, Maya and Naomi headed to the beach, 6 miles away. Maya decided to bike while Naomi took a bus. The graph below shows their journeys, indicating the time and distance traveled. What was the difference, in miles per hour, between Naomi's and Maya's average speeds?
Answers
Answer:
24
Step-by-step explanation:
You take the end points for the graphs and ignore the bumpy areas since it is taking the average and that is irrelevant to the question. naomi is 6 m/10 min which is 36 mph and maya is 12 mph. 36-12=24.
Answer:
Step-by-step explanation:
( 2 + 2i )^20=
(a) 2^20
(b) 2^30
(c) 2^20i
(d) -2^30
Answers
24
34
22i
-34
yup your welcome
FIRST CORRECT ANSWER WILL GET BRAINLIEST
What is the y-intercept of the line on the given graph?
A)4
B)-2
C)2
D)-4
Answers
Answer:
2
The y intercept is the point at which a line crosses the y axis. In the graph the y axis is crossed at 0, 2 or just 2
Step-by-step explanation:
Coach South and Mr. Dr. Coach Rhodes are having a problem solving competition. Mr. Dr. Coach Rhodes can solve four more problems than twice the number of Coach South. If Mr. Dr. COach Rhodes has solved twenty problems, how many problems has Coach South solved?
Answers
Answer: 8
Step-by-step explanation: if Coach Rhodes solves 4 more than twice Coach South then that would mean Coach South solves 8.
Twice 8 equals 16, plus 4 equals 20.
HELP QUICKLY PLEASE!!
What are the coordinates of the endpoints of the midsegment for △JKL that is parallel to KL¯¯¯¯¯?
Enter your answers in the boxes
Answers
Answer:
Did you find the answer? I need help with this too
Step-by-step explanation:
HELP HERE PLESSS. :)
***
Answers
Answer:
is reflected across the line x=4
Need answers for this please.
Answers
Answer:
Step-by-step explanation:
what is 3/4 x 2 5/6 please help me
Answers
Answer:
2 1/8
Step-by-step explanation:
3. A number between 30 and 50 is chosen at random. What's the probability that the
number contains at least one 4?
Answers
Answer:
0.5789
Step-by-step explanation:
The successful events would be 34 , 40 41 42 43 44 45 46 47 48 49
The total number of ways 19 when you count from 31 to 49
P(1 four) = 11/19 = 0.5789
Question 2 plz help I’ll try my best to mark brainliest
Answers
Answer:
F. [tex]\sqrt{x}[/tex]
Step-by-step explanation:
if you replace x with 2 and plug these into your calculator, you can see that [tex]\sqrt{x}[/tex] has the least value
please help i so t understand
Answers
Answer:
Step-by-step explanation:
a=2
b=-4
lxl=absolute values
absoulte values are the distance away from 0.
In this case the absolute value of -4, is 4.
Plug in the values:
(sqrt 2^3-7)+l-4l
(sqrt8-7) +4
(sqrt1)+4
1+4
5
Answer:
Exact Form: 2 sqr root 2 -3 Decimal Form: -0.171578287
Step-by-step explanation:
Hope this helps!!! :)
4x+5y=9
4x−2y=2
x= y=
Answers
Answer:
For example, the solution to the equations 2x + 3y = 15 and x - y = -10 is x = -3 ... Equation 2: 4x + 2y = 20
Answer:
x=0, y=0 this is so easy
PLEASE HELP ME I WILL GIVE YOU BRAINIEST ANSWER
Answers
Answer: What is the question?
Step-by-step explanation: The slope is 1x and the equation is y=x+3