The points on the graphs represent relations. Classify these relations according to whether or not they are functions.
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Answer:
1 and 2 is a function.But the third one isn't.
explanation:
When there is more than one point on a vertical line that is not a function.Like in the third picture points (2,1) and (2,-1) are on the same vertical line.
P.S: it is a function if there is more than one point on a horizontal line.
Why you may ask:
x are the domain, y are the codomain. X can have multiple Y but Y can't have more than one X. To embody: think Xs as mothers and Ys as childrens , a mother can have more than one children but every children can have only one biological mother.
Related Questions
help me please!!!!!!!!
Answers
Answer:
(5x-1)(3x+2)
(if you don't want to do all of this you can use
Step-by-step explanation:
((3•5x2) + 7x) - 2
Factoring 15x2+7x-2
The first term is, 15x2 its coefficient is 15 .
The middle term is, +7x its coefficient is 7 .
The last term, "the constant", is -2
Step-1 : Multiply the coefficient of the first term by the constant 15 • -2 = -30
Step-2 : Find two factors of -30 whose sum equals the coefficient of the middle term, which is 7 .
-30 + 1 = -29
-15 + 2 = -13
-10 + 3 = -7
-6 + 5 = -1
-5 + 6 = 1
-3 + 10 = 7 That's it
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -3 and 10
15x2 - 3x + 10x - 2
Step-4 : Add up the first 2 terms, pulling out like factors :
3x • (5x-1)
Add up the last 2 terms, pulling out common factors :
2 • (5x-1)
Step-5 : Add up the four terms of step 4 :
(3x+2) • (5x-1)
Which is the desired factorization
Answer:
(5x-1)(3x+2)
Step-by-step explanation:
hope this helps!!
A store sells candles. Each cans,e costs the same amount. During a sale, the store reduces the price of each candle by $1.70, Owen spends $11.96 on 4 candles at the sale price. What was the price of 1 candle before the sale?
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11.96/4= 2.99
2.99+1.70= 4.69
1) the sum of 8 and t
3) the product of 5 and b
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Step-by-step explanation:
When we say sum we are referring to addition.
And a number and a variable(letter) can't be added. So the sum of 8 and t can't be added.
The sum of 8 and t is;
8+t
When we talk about product or finding the product of a number we are referring to the number we get after multiplying two or more numbers.
And note that with multiplication, a number and a variable(letter) can be multiplied.
The product of 5 and b is;
5×b=5b
3.4 code practice: Question 1
Answers
Answer:
color = input("What color? ")
if (color == "yellow"):
print("Correct!")
else:
print("Nope")
Write an expression to describe the sequence below. Use n to represent the position of a term in the sequence, where n = 1 for the first term. -91, -194, -291, -388
Answers
Answer:
[tex]T_n = -97n[/tex]
Step-by-step explanation:
The actual sequence is: -97, -194, -291, -388
Required
Determine the nth term
nth term of an arithmetic progression is:
[tex]T_n = T_1 + (n - 1)d[/tex]
Where
[tex]T_1 = First\ Term = -97[/tex]
[tex]d = Common\ Difference = -194 - (-97) =-97[/tex]
So:
[tex]T_n = T_1 + (n - 1)d[/tex] becomes
[tex]T_n = -97 + (n - 1) * -97[/tex]
[tex]T_n = -97 -97n + 97[/tex]
Collect Like Terms
[tex]T_n = -97n + 97-97[/tex]
[tex]T_n = -97n[/tex]
Hence, a term of the sequence is:
[tex]T_n = -97n[/tex]
Somebody help um please
Answers
Answer:
the last one and the second one I think. Maybe the first one not very sure.
Please help me out!!!!!
Answers
Answer:
Step-by-step explanation:
Over the past month, a hairstylist has had 56 female clients and 24 male clients. What is the ratio of male clients to female clients for this hairstylist?
Answers
Answer:
24:56
Simplified: 8:7
Step-by-step explanation:
Y -7=2
6. Help me please ayuda
Answers
Answer:
54
Step-by-step explanation:
First add 7 to both sides to cancel out the -7
y/6-7(+7)=2(+7)
Then, multiply 6 to both sides to cancel the 6
y/6(6)=9(6)
y=54
What is the area of the trapezoid?I WILL GIVE brainliest! to the first person to answer correct
Answers
Answer:
30 i could be wrong
Step-by-step explanation:
sorry
what makes a solution different from other mixtures?
plz help
Answers
Answer:
In a mixture, substances are generally just mixed and are not completely dissolved. In a solution, substances are dissolved completely and they cannot be filtered out. Mixture comprises two or three compounds that aren't fused chemically. They have no physical interaction
Step-by-step explanation:
6n – 4 + 5n - 5 what is the awnser
Answers
Answer:
11n-9
Step-by-step explanation:
6n-4+5n-5
11n-4-5 Combine like terms
11n-9
Every school day, Dylan rides the school bus 4.79 miles round trip between home and school. Estimate the total distance Dylan rode the school bus last month when there were 21 school days. Write an equation with an estimated answer.
Answers
Answer:
4.79 x 21 = 101 (rounded up from 100.59)
Step-by-step explanation:
Plzzzz help me!!!!!!!!!!
Answers
Answer:
The most specific way you can name this shape is parallelogram.
4x-5=x+13 is the equation that can be used to solve for x.
3x = 18
x is equal to 6
AC is equal to 2*(6+13) = 2*19 = 38
Plz ANSWER QUICK! WILL GIVE BRAINIEST! ANSWER CORRECTLY!
20 percent of 120 is the same as 25 percent of what number?
A. 960
B. 96
C. 15
Answers
Solve the exponential equation: 6–2x = 62 – 3x
Question 1 options:
A)
4
B)
–2
C)
3
D)
2
Answers
Answer:
x = 56
Step-by-step explanation:
Collect like terms:6 - 2x = 62 - 3x
-2x + 3x = 62 - 6
1x = 56
x = 56
Check your answer:6 - 2(56) = 62 - 3(56)
6 - 112 = 62 - 168
-106 = -106
I don't understand the answer choices that are given. Please mark me the Brainliest!?!
What is this
y=3x-4
Answers
Answer:
4/3 or 1.3
Step-by-step explanation:
y= 3x-4
To find x- intercept/zero, Substuite y=0.
0= 3 x -4
Move the variable to the left-hand side and change its sign
-3x= -4
Divide both sides of the equation by -3
x= 4/3
(1.3 as a decimal)
Walkway Over the Hudson, a bridge that crosses the Hudson River in Poughkeepsie, is 2.063
kilometers long. Anping Bridge, which was built in China 850 years ago, is 2.07 kilometers long.
a. What is the total span of both bridges?
Show your thinking
b. How much longer is the Anping Bridge
than the Walkway Over the Hudson?
Answers
Answer: 4.126 km
Step-by-step explanation:
First, We have to find total span of both bridges
As Question indicates 'total' ,that is, we have to find bridge length in total ( You can join Bridges to have better understanding)
Now, Walkway over hundson Bridge length= 2.063 km
Amping bridge length= 2.07 km
So, Total span of both bridges = 2.063+2.07 = 4.133 km
b) Now Leah wanna walk across and back on walkway over hudson ,that is, she wanna return to starting point from where she walk forth
So,that means, she walk double distance of length of walkway over hudson
So, total distance = 2× 2.063
= 4.126 km
hope this helps,
Plzzs give brainliest if you like my answer.
PLEASE HELP ILL GIVE BRAINLIEST!!
Answers
Answer:
Yes it is yellow
Step-by-step explanation:
You are correct
Chris has $100 in his saving account and he adds $20 a month to the account. The total amount can be represented by the linear function T=20x+100. His goal is to have a total of $300 in four months. What should he change in the function to reach this goal?
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Can someone please help me with my math asap
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Answer:
A) 15x - 12
General Formulas and Concepts:
Pre-Algebra
Distributive PropertyAlgebra I
Combining Like TermsStep-by-step explanation:
Step 1: Define
5x(3 - 12x) - 3(4 - 20x²)
Step 2: Simplify
Distribute: 15x - 60x² - 12 + 60x²Combine like terms: 15x - 12If anyone knows the answer to this can you help me
Answers
Answer:
C. y + 7 = -7(x - 3)Step-by-step explanation:
The equation of a line is:
y - y₀ = m(x - x₀)
where m is the slope and (x₀, y₀) is the point which the line passes through
The product of slopes of two perpendicular lines is -1
so if given lines slope is ¹/₇ them:
¹/₇·m = -1
m = -7
(3, -7) ⇒ x₀ = 3, y₀ = -7
Therefore:
y - (-7) = -7(x - 3)
y + 7 = -7(x - 3)
HOW DOES THE GRAPH OF F(X) = 4(X - 3)^2 + 1 DIFFER FROM THE GRAPH OF G(X) = 2 (X -3)^2 + 1. please explain so i can understand!! thxx
Answers
Answer:
6732FDX
Step-by-step explanation:
Use calculator
A student starts a new semester with $30 in their lunch
account.Each lunch at school costs $1.75.What is the relationship between the number of school
lunches purchased, n, and the dollar amount in the account, A?
Answers
Answer:
28.25
Step-by-step explanation:
HELPPPPPPPPPPPPPPPPPP!
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If A = 117 degrees, B = 12 degrees, and b = 12, find a. Round to the nearest tenth.
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Answer:
a = 51.4Step-by-step explanation:
sinA = sinB
a b
sin(117) = sin(12)
a 12
a * sin(12) = 12 * sin(117)
a = 12 * sin(117)
sin(12)
a = 51.4
Which ordered pair represents the translation of R to S?
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Which expression represents the phrase 17 less than three times a number
Answers
This is an algebra expression. What we do is write it down in simplest form.
1. Write down equation
= 17 - 3 x n
= 3 x n + (-17)
I hope this answer helped. Have a great day everyone!
Emma's grandmother sent her an $80 bookstore gift card for her birthday. Emma wants to make sure that her purchases don't exceed the amount of her gift card. So far, she has selected books that cost $8.95, $11.95, $22.25, and $24.95. She has also found a calendar she likes for $8.25. Round each item up to the next dollar to overestimate the total cost of the items in Emma's shopping basket.
Answers
Answer: total cost of the estimated items = $76
Step-by-step explanation:
Step 1
Rounding up each item to the next dollar
Book 1 = $8.95 ≈ $9.00
Book 2 = $11.95≈ $12.00
Book 3 = $22.25≈$22.00
Book 4 = $24.95≈$25.00
Calendar = $8.25 ≈$8.00
Step 2
The total estimated cost of items in Emma's shopping basket =$9.00+$12.00+$22.00+$25.00+$8.00
=$76 which did not exceed the amount of bookstore gift card of $80 sent by her grandmother.
Answer: 78$
Actual Estimate
$8.95 --------------------------$9.00
$11.95--------------------------$12.00
22.25--------------------------$23.00
$24.95------------------------$25.00
$8.25--------------------------$9.00
Then add the estimate numbers to get $78
Mrs. Piazza invested $8000 in a certificate of deposit that pays 3% simple interest for 4 years. How much will be in Mrs. Piazza's account at the end of 4 years?
Answers
Answer:
$8960
Step-by-step explanation:
Given
principal = $8000
rate= 3%= 0.03
time = 4 years
Required
the final amount, we assume that this is a simple interest investment.
Step two:
[tex]A= P(1+rt)\\\\A=8000(1+0.03*4)\\\\A=8000(1+0.12)\\\\A=8000*(1.12)\\\\A=8960[/tex]
The final amount in the account is $8960