Does the mapping represent a function? Explain why or why not.
Х
у
-1
4-9
0
+0
3
+4
9

Answer:

D y=2/3x+3

Step-by-step explanation:

I hope that helps

Answer:

x = 3y + 1

Step-by-step explanation:

0-(-1) = 1

1-0 = 1

2-1 = 1

1-(-2) = 3

4-1 = 3

7-4 = 3

As x increases by 1, y increases by 3. At x = 0, y is already 1. Thus:

x = 3y + 1

Answer:

Slope-intercept Form:  [tex]y = 3x + 1[/tex]

Standard Form:  [tex]9x -3y = -3[/tex]

Point-slope Form:  [tex]y -7 = 3(x - 2)[/tex]

Step-by-step explanation:

Answer:

C. 6

Step-by-step explanation:

Looking at the value of AC, you can assume that it is the same value as CD because it is divided in the middle with a 90-degree angle in which it is 12.  Assuming that the line BF is also divided in half, you should divide 12 by 2 in which you get the final answer as 6.

Answer: [tex]3a^{2}-ab + 5ac- 2b^{2} + 5bc-2c^{2}[/tex]

Step-by-step explanation:

(3a + 2b − c) (a − b + 2c)  

Expand (3a + 2b − c) (a − b + 2c) by multiplying each  term in the first  expression by each  term in the second expression.

3a ⋅ a + 3a (−b) + 3a (2c) + 2ba + 2b (−b) + 2b (2c) − ca − c (−b) − c (2c)

3 (a ⋅ a) + 3a (−b) + 3a (2c) + 2ba + 2b (−b) + 2b (2c) − ca − c (−b) − c (2c)

3a^2 + 3a (−b) + 3a (2c) + 2ba + 2b (−b) + 2b (2c) − ca − c (−b) − c (2c)

Rewrite using the commutative property of multiplication.

3a^2 + 3 ⋅ −1ab + 3a (2c) + 2ba + 2b (−b) + 2b (2c) − ca − c (−b) − c (2c)

3a^2 − 3ab + 3a (2c) + 2ba + 2b (−b) + 2b (2c) − ca − c (−b) − c (2c)

Rewrite using the commutative property of multiplication.

3a^2 − 3ab + 3 ⋅ 2ac + 2ba + 2b (−b) + 2b (2c) − ca − c (−b) − c (2c)

3a^2 − 3ab + 6ac + 2ba + 2b (−b) + 2b (2c) − ca − c (−b) − c (2c)

Rewrite using the commutative property of multiplication.

3a^2 − 3ab + 6ac + 2ba + 2 ⋅ −1b ⋅ b + 2b (2c) − ca − c (−b) − c (2c)

3a^2 − 3ab + 6ac + 2ba + 2 ⋅ −1 (b ⋅ b) + 2b (2c) − ca − c (−b) − c (2c)

3a^2 − 3ab + 6ac + 2ba + 2 ⋅ −1b^2 + 2b (2c) − ca − c (−b) − c (2c)

3a^2 − 3ab + 6ac + 2ba − 2b^2 + 2b (2c) − ca − c (−b) − c (2c)

Rewrite using the commutative property of multiplication.

3a^2 − 3ab + 6ac + 2ba − 2b^2 + 2 ⋅ 2bc − ca − c (−b) − c (2c)

3a^2 − 3ab + 6ac + 2ba − 2b^2 + 4bc − ca − c (−b) − c (2c)

Rewrite using the commutative property of multiplication.

3a^2 − 3ab + 6ac + 2ba − 2b^2 + 4bc − ca − 1 ⋅ −1cb − c (2c)

3a^2 − 3ab + 6ac + 2ba − 2b^2 + 4bc − ca + 1cb − c (2c)

3a^2 − 3ab + 6ac + 2ba − 2b^2 + 4bc − ca + cb − c (2c)

Rewrite using the commutative property of multiplication.

3a^2 − 3ab + 6ac + 2ba − 2b^2 + 4bc − ca + cb − 1 ⋅ 2c ⋅ c

3a^2 − 3ab + 6ac + 2ba − 2b^2 + 4bc − ca + cb − 1 ⋅ 2 (c ⋅ c)

3a^2 − 3ab + 6ac + 2ba − 2b^2 + 4bc − ca + cb − 1 ⋅ 2c^2

3a^2 − 3ab + 6ac + 2ba − 2b^2 + 4bc − ca + cb − 2c^2

3a^2 − 3ab + 2ab + 6ac − 2b^2 + 4bc − ca + cb − 2c^2

3a^2 − ab + 6ac − 2b^2 + 4bc − ca + cb − 2c^2

3a^2 − ab − 2b^2 + 4bc + 6ac − 1ac + cb − 2c^2

3a^2 − ab − 2b^2 + 4bc + 5ac + cb − 2c^2

3a^2 − ab − 2b^2 + 4bc + bc + 5ac − 2c^2

3a^2 − ab − 2b^2 + 5bc + 5ac − 2c^2

3a^2 − ab − 2b^2 + 5ac + 5bc − 2c^2

3a^2 − ab + 5ac − 2b^2 + 5bc − 2c^2

9514 1404 393

Answer:

  (2, 3, 5)  or  (1, 1, n) for n ≥ 1

Step-by-step explanation:

For some a, b, c, you want to show that ...

  (ab -1)/c is a whole number

  (ac -1)/b is a whole number

  (bc -1)/a is a whole number

__

A search of triples with numbers in the range of 1 to 100 gave these results:

  (1, 1, n) . . . for any n ≥ 1

  (2, 3, 5) . . . . apparently, the only non-trivial solution

__

Further comment

We can show that if you postulate the triple is (2, x, 2x-1), then the only non-trivial value for x is 3. This gives (2, 3, 5) as above.

This triple requires ...

  (2(2x -1) -1)/x = integer = (4x -3)/x = 4 -3/x

In order for 3/x to be an integer, we must have x=1 or 3. For x=1, the triple is (2, 1, 1). For x=3, the triple is (2, 3, 5).

Answer:

0.618

Step-by-step explanation:

2.472 divided by 4 is 0.618, NOT 1.61812298

Answer:

you need to use rise over run to the left on the graph

Step-by-step explanation:

amount he earned for selling all of the oranges =

$0.5 x 100 = $50

% profit = ((50 - 40)/40) x 100% = 25%

Therefore, he made a 25% profit

Answer:

D

Step-by-step explanation:

20h+3-8h-5

=20h-8h-5+3

=12h-2

Answer:

D) 12h - 2

________________________________________

I need everyone to know something! Don't let anyone ever push you down or call you worthless.  

You are worth everything and more! So stay strong, hold on, and live long!  

Most people don't hear this often. Your all loved, no matter what it feels like. So please, stay strong. If not for yourself then for me and everyone else who cares for you...

Answer:

ghhhushhshshhzhzhhsbshhs

Answer: 24 cubic meters

Step-by-step explanation:

Answer:

24 cubic meters

Step-by-step explanation:

Khan Academy

Answer:

55?

Step-by-step explanation:

Answer:

The correct answer to your problem is C. t= -10, t= -3

(t + 3)(t +10) = 0

t + 3 = 0

t + 10 = 0

0 - 3 = -3 and 0 - 10 = -10, therefore your answer is C.

Answer:

option A x=115,y=63

Step-by-step explanation:

y+117=180 linear pair

y=180-117=63

again

x+y+120+62=360 sum of interior angle of quadrilateral is 360

x+63+120+62=360

x=360-245=115°

Answer:

52 cards/hour

Step-by-step explanation:  

                                                        416 cards

Rodney's card production rate is --------------- = 52 cards/hour

                                                          8 hours

Answer:

The required equation is: y=-3

Option D is correct.

Step-by-step explanation:

We need to write equation of line that is perpendicular to y = 5 and passes through (-4,-3).

The equation of line in slope-intercept form is expressed as: [tex]y=mx+b[/tex]

where m is slope and b is y-intercept.

Finding Slope:

Comparing with the given equation y=5, the slope m =0

The slope of required line will be opposite reciprocal of 0 as both lines are perpendicular. so it will be m=0

Finding y-intercept

The y-intercept can be found using slope m=0 and point (-4,-3)

[tex]y=mx+b\\-3=0(-4)+b\\b=-3[/tex]

So, y-intercept b is b=-3

The equation of required line having slope m=0 and y-intercept b=-3 is

[tex]y=mx+b\\y=0(x)-3\\y=-3[/tex]

So, required equation is: y=-3

Option D is correct.

Answer: 3.742

Step-by-step explanation:

Answer:

c five hours

Step-by-step explanation:

i did the math

Given :

Ajaya bought a fan and a heater for Rs 4,000. He sold the fan at a profit of 25% and the heater at a loss of 5%.

To Find :

If he gained 7% on his total outlay, at what price did he buy each item.

Solution :

Let, cost price of fan and heater is x and y respectively.

x + y = 4000       ....1)

Price of fan after 25% profit, x + 0.25x  = 1.25x .

Price of heater after 5% loss, y - 0.07y = 0.93y .

Total profit, 4000 + 0.07×4000 = 4000×1.07 = $4280 .

Equation of selling price :

1.25x + 0.93y = 4280     ....2)

Putting value x from of 1) in equation 2), we get :

[tex]1.25(4000-y ) +0.93y = 4280\\\\5000 - 1.25y + 0.93y = 4280\\\\0.32y = 720\\\\y = Rs\ 2250[/tex]

So, x = 4000 - 2250

x = Rs 1750

Therefore, he buy fan for Rs 2250 and heater for Rs 1750.

Answer:

f(x) = 19

Step-by-step explanation:

F(x) + -3(-5) +4

F (x) 15+4

F(x)= 19

Answer:

the answers for the practice:

1. 170.668

2. -6.250

3. 16

4. $51,291.57

i just took it and these are all correct

S₁₇ is 168157.8 for the geometric series 256 - 128 + 64 - 32 +... using the finite geometric sum formula.

Sequence is an enumerated collection of objects in which repetitions are allowed and order matters.

A geometric series is the sum of an infinite number of terms that have a constant ratio between successive terms.

The given series is 256 - 128 + 64 - 32 +..

First term a=256

Common ratio r=-128/256=-0.5

finite geometric sum formula.

Sₙ=a(1-r)ⁿ/1-r

Put n=17

S₁₇=256(1-(-0.5))¹⁷/1+0.5

=256(1.5)¹⁷/1.5

=256(985.3)/1.5

=252236.8/1.5

=168157.8

Hence, S₁₇ is 168157.8 for the geometric series 256 - 128 + 64 - 32 +... using the finite geometric sum formula.

To learn more on Sequence click:

https://brainly.com/question/21961097

#SPJ2

Answer:

Two non zero vectors, a and b are parallel when they are scalar multiples of each other such that a = c·b where c is a scalar quantity.

Therefore, in order to find a vector that is parallel to the vector, b = (-2, -1), we multiply the vector, b by a scaler quantity

Step-by-step explanation:

Given that the vector b = (-2, -1) can be written as follows;

b = -2·i - j, we have;

[tex]\left | b \right |[/tex] = √((-2)² + (-1)²) = √5

Therefore, we have;

The coordinates of the endpoint of the vector are (-2, 0) and (0, -1)

Therefore, the slope of the vector = (-1 - 0)/(0 - (-2)) = -1/2

The slope of parallel vectors are equal, which gives the slope of the parallel vector = -1/2 = (λ × (-1 - 0))/(λ ×(0 - (-2))

Therefore, a parallel vector is obtained from a vector by multiplying with a scaler product.

Answer:

About 4%

because 5 of 5.2 is about 96% so 100% - 96% = 4%

Answer:

4%

Step-by-step explanation:

vA = actual value

vE = expected value

percent error = ((vA - vE) / vE) x 100

((5.2 - 5) / 5) x 100 = 4

4%

Answer: 24-150

Step-by-step explanation:

-6(-4 + 25)

24-150

Answer:

-126

Step-by-step explanation:

First, you multiply the -6 by -4

-6 * -4 = 24

Because a negative times a negative equals a positive.

So you now have 24

Second, you multiply the -6 times 25

-6 * 25 = -150

Because a negative times a positive is a negative.

So now you have -150

Third, you add up the two numbers together

24 + -150 = -126

Answer:

This is answer

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