Please help me I really need help

give answer here:

These are Function (7,2), (1,1), (8,1), (4,2), (3,11) These are not Functions (7,2), (1,1), (8,1), (4,2), (1,11)

step-by-step explanation:

The first set is a function i know this because for example the inputs which are 7,1,8,4,3 are buyers for a car and the output is 2,1,1,2,1 1 and those are the cars but the input is different buyers, The 2nd one has two of the same inputs which means the same buyer is buying two cars which is not fair so it makes it a non function.

A function y=f(x) has the property that for any x in the domain there is exactly one value for y=f(x).  

We can represent a function as a set of ordered pairs  { (x₁,y₁), (x₂,y₂), ... }.  Any set of ordered pairs where no value appears twice as the first element is a function.  If the same x appears twice (with necessarily different ys because it's a set) that's not a function.

Function example:  { (0,1), (1,3), (2,5), (3,7), (4,-13) }

Non-function example:  { (0,1), (1,3), (2,5), (3,7), (3,-13) }

In the first set no x is duplicated so it represents a function; in the second 3 is the x in two of the pairs; not a function.

Answer:

-14 or -2

Step-by-step explanation:

-8+-6= -14

-8+6 = -2

Answer:

The product of the expression is -12s² + 11st - 2t²

Step-by-step explanation:

(-3s + 2t)(4s - t)

Use the foil method to multiply the terms. So, we distribute -3s to (4s - t) and we will also distribute 2t to (4s - t) as well.

-12s² + 3st + 8st - 2t²

Now combine like terms.

-12s² + 11st - 2t²

Answer:

1000:193:13

Step-by-step explanation:

Requirement of water to make a medicine = 1 litre = 1000ml;

Amount of sucrose = 193ml;

Amount of saline solution = 13 ml;

Ratio of Water: Sucrose: Saline Solution is;

1000:193:13

It cannot be simplified further.

Thus, 1000:193:13 is the simplest form of ratio of the solutions

Answer:

The maximum number of sandwiches she can buy is 24.

Step-by-step explanation:

We can create a function to represent the cost of her team's lunch in function of the number of people in the team. We have:

[tex]cost(x) = 15 + 6.25*x[/tex]

Since she needs to stay on budget, the cost has to be less or equal to 170, therefore:

[tex]cost(x) \leq 170\\15 + 6.25*x \leq 170\\6.25*x \leq 170 - 15\\x \leq \frac{155}{6.25}\\x \leq 24.8[/tex]

Since she can't buy 0.8 sandwiches, the maximum number of sandwiches she can buy is 24.

Answer:

24

Step-by-step explanation:

Answer:

☝this person is correct

B is the answer

Answer:

your anwser is 7.74596669241

Answer:

[tex]\sqrt{60} = 7.74596669241[/tex]

Step-by-step explanation:

Answer:

(-1,1)

Step-by-step explanation:

To find the x coordinate of the midpoint, add the x coordinates and divide by 2

(-5+3)/2 = -2/2 = -1

To find the y coordinate of the midpoint, add the y coordinates and divide by 2

(3+-1)/2 = 2/2 = 1

(-1,1)

Answer:

(-1,1)

Step-by-step explanation:

The midpoint of a line can be found using the following formula:

[tex](x_m, y_m) = (\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2})[/tex]

Basically, to find the midpoint, add the x-coordinates and divide by 2, then add the y coordinates and divide by 2.

X-coordinate

Add the x-coordinates of A and B, then divide by 2.

The x-coordinates are the numbers that comes first in the points.

A: (-5,3)

B: (3, -1)

The x coordinates are -5 and 3.

Add the x-coordinates.

-5+3=-2

Divide by 2

-2/2=-1

The x-coordinate of the midpoint is -1.

Y-coordinate

Add the y-coordinates of A and B, then divide by 2.

The y-coordinates are the second numbers in the points.

A: (-5,3)

B: (3,-1)

The y-coordinates are 3 and -1.

Add the y-coordinates.

3+-1=2

Divide by 2.

2/2=1

The y-coordinate of the midpoint is 1.

If the x-coordinate is -1 and the y-coordinate is 1, the midpoint is (-1,1)

Answer:

X

Step-by-step explanation:

Answer:

see below

Step-by-step explanation:

h(t) = –gt^2 + v0t + h

where g is 1/2 the gravity constant and v0 is the initial velocity and h is the initial height

h(t) = –16t^2 +49t + 0

h(t) = –16t^2 +49t

Factor out t

0 = t(-16t+49)

The zeros are at

t= 0 and   -16t = -49

                      t = 49/16

The vertex  (or max) is 1/2 way between the zeros

(0+ 49/16)  /2 = 49/32  =1.53125

Round to the nearest hundredth

x = 1.53

The height is

h(1.53) = 1.53(-16 * 1.53 +49)

          37.5156

To the nearest hundredth

           37.52

The range is the values that height can take

0 ≤h≤37.52

There is a maximum height because eventually the effects of gravity going down outweigh the effects of the initial velocity going up

Hey!!!

MAD stands for Mean Absolute Deviation.

Explanation:

Mean Absolute Deviation (MAD) of a data set is the average distance between each data value and the mean.

Hope it helps..

Good luck on your assignment

Answer:

(MAD) is an abbreviation of mean absolute deviation.

Answer:

6%

Step-by-step explanation:

[tex]\frac{213590 - 201500}{201500} = \frac{12090}{201500} = 6[/tex]

The percentage profit Emma makes. if, Emma buys a house for £201 500, and She sells the house for £213 590 is 6%.

As it is clear from the term per cent means measuring anything per hundred. For example, you get marks per 100 marks, so you get the percentage.

Given:

Emma buys a house for £201 500,

She sells the house for £213 590,

Calculate the profit as shown below,

Profit = Selling price of the house - Cost of house

Profit = 213 590 - 201 500

Profit = £12090

Calculate the percentage profit as shown below,

The percentage profit = Profit / Cost of house  × 100

The percentage profit = 12090 / 201500 × 100

The percentage profit = 0.06 × 100

The percentage profit = 6%

To know more about percentages:

brainly.com/question/20818421

#SPJ2

Answer: 2,000 milliliters.  

Step-by-step explanation:

Hi, to answer this question we have to add the amount of water and the amount of sports drink that he drank:

1 liter + 1 liter = 2 liters of liquid.

Finally, we have to convert the result into milliliters.

Since 1 liter = 1000 liters

We have to multiply the liters drank by 1000.

2 x 1000 = 2,000 milliliters.  

Feel free to ask for more if needed or if you did not understand something.  

Answer:

Maria (I THINK)

Step-by-step explanation:

Tanya is running 70 yards in all, while maria would be running more based on the pythagorean theorem

The pythagorean theorem is that on a right triangle, the square root of the two legs equal the hypotenuse

40^2+ 70^2 =c^2

6500=c^2

square root both sides

and roughly c= 80.6 yards so maria runs more

(Im not sure it is a right angle though?)

Answer:

Step-by-step explanation:

Answer:

207

Step-by-step explanation:

So list out the numbers from digits.

1 digit numbers: 9

2 digit numbers: 90

3 digit numbers: 6

9 * 1 = 9

90 * 2 = 180

3 * 6 = 18

9 + 18 + 180 = 207

Answer:

207

Step-by-step explanation:

207 all the way

Answer:

yes

Step-by-step explanation:

its called an isoceles triangle

Answer:

no

Step-by-step explanation:

The third side must be less than the sum of the other two sides

5+5> the third side

10 > third side

Since the third side is 10 we cannot build a triangle

Answer:

Jeffrey's pickup truck will be able to carry 55 square feet of granite.

Step-by-step explanation:

There are 2000 pounds in 1 Ton

Jeffrey's pickup truck bed can safely hold half a ton of weight.

So that means his pickup truck can hold

2000/2 = 1000 pounds

He also plans to pick up a 120-pound kitchen sink in the same trip.

So the remaining weight limit is

1000 - 120 = 880 pounds

Since the granite weighs 16 pounds per square foot

880/16 = 55 sq ft.

Therefore, Jeffrey's pickup truck will be able to carry 55 square feet of granite.

Answer:

The answer is 55

Step-by-step explanation:

Answer:

Solution,

Radius=3 ft

Height=9 ft

Volume of cone=?

Now,

[tex]volume \: of \: cone \\ = \frac{1}{2}\pi \: {r}^{2} h \\ = \frac{1}{2} \times 3.14 \times {3}^{2} \times 9 \\ = \frac{1}{2} \times 3.14 \times 9 \times 9 \\ = 84.78 \: {ft}^{3} [/tex]

hope this helps...

Good luck on your assignment

Answer:

V = 84.82 ft³

Step-by-step explanation:

Volume of Cone = [tex]\pi r^2\frac{h}{3}[/tex]

Where r = 3, h = 9

=> V = [tex](3.14)(3)^2(\frac{9}{3} )[/tex]

=> V = (3.14)(9)(3)

=> V = 84.82 ft³

Answer:

17

Step-by-step explanation:

Based on the 2nd equation, it seems that x=-3-3y.  I got that by subtracting both sides by 6y and then dividing both sides by 2.  Now  substitute that in place of x in the first equation.  (-3-3y)/3-2y=14.  Simplify that and get               -1-y-2y=14.  Add 1 to both sides and simplify.  You get -3y=15.  Divide both sides by -3 and get y=-5.  Now substitute -5 into the equation for x. x=-3-3(-5)

x=-3+15=12

So x=12 and y=-5.  Now do 12-(-5)=12+5=17

Answer:

1/8

Step-by-step explanation:

There are 8 possible outcomes

HHH HHT HTT HTH  TTT TTH THT THH

There is one with all three tails

P( three tails ) = all tails / total  = 1/8

Answer:

1/8

Step-by-step explanation:

Khan Academy

Answer:

Whichever distance you can count the metric units and see that the x value is 7 on

Step-by-step explanation:

Whichever distance you can count the metric units and see that the x value is 7 on

Answer:

I think x has no value in that function

Step-by-step explanation:

Answer: 64,000 crickets

Step-by-step explanation: 2 years = 24 months; every 3 months the crickets double in population, therefore the cricket population doubles 8 times. 250 x 2 = 500; 500 x 2 = 1,000; 1,000 x 2 = 2,000; 2,000 x 2 = 4,000; 4,000 x 2 = 8,000; 8,000 x 2 = 16,000; 16,000 x 2 = 32,000; 32,000 x 2 = 64,000

Answer: $210000

Step-by-step explanation:

2:5:5:7

you add the numbers that are in the ratio

2+5+5+7= 19

Then you divide each four of the profits by the total profit

2/19 x 570000 = $60000

5/19 x 570000 = $150000

7/19 x 570000 = $210000

Therefore the largest amount of profit recieved by one of the four partners is $210000

Answer:

the answer is D

Step-by-step explanation:

Answer:

2334

Step-by-step explanation:

hi

Answer:

The percentage of the substance is left after 10 hours is 60%.

Step-by-step explanation:

The expression representing the amount left after a certain period of decay is:

[tex]y=a(1-r)^{t}[/tex]

Here,

y = final amount

a = initial amount

r = decay rate

t = time taken

It is provided that:

a = 1

r = 5% / hour

t = 10 hours

Compute the percentage of the substance is left after 10 hours as follows:

[tex]y=a(1-r)^{t}[/tex]

  [tex]=1\times (1-0.05)^{10}\\\\=0.95^{10}\\\\=0.598737\\\\\approx 0.60[/tex]

The percentage is: 0.60 × 100 = 60%.

Thus, the percentage of the substance is left after 10 hours is 60%.

Answer:

A Analía sí le alcanzó el dinero pues aún tenía $224 de los $2000 que llevó.  

Analía gastó en total $1776. Si llevó $2000, entonces aún tenía:

[tex] \\ \$2000 - \$1776 = \$224[/tex]

Step-by-step explanation:

Para resolver el problema se deben obtener los subtotales de cada una de las transacciones en los que Analía gastó el dinero:

Primera transacción: compra de 12 camisas

Compró 12 camisas a $21 cada una. El monto por esta transacción es:

[tex] \\ \frac{\$21}{camisa} * 12\;camisas = \$252[/tex]

Primera transacción: T1 = $252.

Segunda transacción: compra de 24 remeras

Compró 24 remeras a $11 cada una:

[tex] \\ \frac{\$11}{remera}*24\;remeras = \$264[/tex]

Segunda transacción: T2 = $264.

Tercera transacción: compra de 40 polleras

Compró 40 polleras a $56 cada una:

[tex] \\ \frac{\$56}{pollera}*40\;polleras = \$2240[/tex]

Tercera transacción: T3 = $2240.

Cuarta transacción: devolución de pantalones y descuento

Devolvió 20 pantalones (y se lo descontaron de lo que tenía que pagar). El costo de cada pantalón es de $51 cada uno:

[tex] \\ \frac{\$51}{pantalon}*20\;pantalones = \$1020[/tex]

Cuarta transacción: T4 = $1020.

Quinta transacción: pago de ida y vuelta en transporte

Finalmente, el taxi para ir y volver del negocio le costó $40.

Quinta transacción: T5 = $40.

¿Cuánto gastó en total Analía?

A todo lo que Analía gastó, le debemos restar lo obtenido en el descuento por la devolución de pantalones (Cuarta transacción). Este último dinero corresponde a una transacción a favor de Analía, por lo que se resta a lo que ella ha gastado. De esta manera:

[tex] \\ Total = T1 + T2 + T3 - T4 + T5[/tex]

[tex] \\ Total = \$252 + \$264 + \$2240 - \$1020 + \$40[/tex]

Para hacer más notorio el total de lo que gastó y lo que le descontaron a su favor, tenemos:

[tex] \\ Total = \$252 + \$264 + \$2240 + \$40 - \$1020[/tex]

[tex] \\ Total = \$2796 - \$1020[/tex]

[tex] \\ Total = \$1776[/tex]

Entonces, Analía gastó en total $1776. Si llevó $2000, entonces aún tenía:

[tex] \\ \$2000 - \$1776 = \$224[/tex]

En conclusión, a Analía sí le alcanzó el dinero pues aún tenía $224 de los $2000 que llevó.

Answer:

0.0000805

Step-by-step explanation:

[tex]8.05*10^{-5}=\frac{8.05}{10^{5}}\\\\=\frac{8.05}{100,000}\\[/tex]

= 0.0000805

Answer:

A

Step-by-step explanation:

Just did the assignment