Look at the graph of the given relation. Determine whether the relation is a function. Explain why or why not.
(4.2, 6.2), (-0.8, 6.2), (-3.8, 4.2), (-3.8, -1.8)

Answer:

Step-by-step explanation:

Use the exponential function

[tex]v(t)=a(b)^t[/tex] where a is the initial value of the car, b is the rate of decay, and t is the time in years. For us, a = 18000, b = (1 - .15), so the model for this car is:

[tex]v(t)=18000(.85)^t[/tex]  We can use this model now to find the value, v(t), of the car after 3 years has gone by (from 2006 to 2009 is 3 years):

[tex]v(t)=18000(.85)^3[/tex] and simplifying a bit:

v(t) = 18000(.614125) so

v(t) = 11054.25

Round however you need to.

Answer:

equation of the line that passes through (2,7) and (7,12) is y=x+5

Answer:

$127

Step-by-step explanation:

Ur welcome :)

Answer:

U = 16206 + 22.2x

Step-by-step explanation:

This year, water usage has increased by 20% for both regular days and special events.. Write an equation for the total water usage, U, at the park this year in terms of x, the number of special events the park has hosted

Solution:

Last year regular usage of water was 13505 gallons, where as it was 18.5 gallons per special event. Let us assume that there were x special invents, hence:

The total usage for last year = 13505 + 18.5x

This year, the total usage (U) increased by 20%, hence:

Total usage for this year (U) = total usage for last year + 20% of total usage for last year

U = (13505 + 18.5x) + 0.2(13505 + 18.5x)

U = 13505 + 18.5x + 2701 + 3.7x

U = 16206 + 22.2x

Answer:

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

sin theta = opp / hyp

sin 52 =x /8

8 sin 52 =x

6.304086029 = x

Answer:

x=6.3

Step-by-step explanation:

simply

sin 52=x/8

cross multiply

8 sin 52=x

x= 8 x 0.7880

x= 6.3

Step-by-step explanation:

I think the answer will be step 3

Answer:

x ≤ −6 or x ≥ 1

Answer: 145≤40+4.5v

Step-by-step explanation: have a blessed day !

Answer:

7 in

Step-by-step explanation:

Process of elimination. It can’t be 9 or 10, because 9+9=18 and 10+10=20 (they're more than 16). 8+8=16 exactly, but there’s no room in 16 for the width. Therefore, it’s 7 because 7+7=14

Answer:

The two numbers are 11/8 and 5/6

Step-by-step explanation:

Let the unknown numbers be x and y

Given that the difference of two numbers is 13/24

x - y = 13/24

and  that 11/12 of the reciprocal of one number is equal to 5/9 of the reciprocal of the other

11/12 * 1/x = 5/9 * 1/y

11/12x = 5/9y

cross multiply

12x * 5 = 11* 9y

60x = 99y

x = 99y/60

= 33y/20

substitute into x - y = 13/24

33y/20 - y = 13/24

13y/20 = 13/24

24y = 20

y = 20/24

= 5/6

x = 33y/20

= 33 *5/20*6

= 11/8

Answer:

Step-by-step explanation:

9+0.75x

1 metre= $9.75

2 metre= $10.50

3 metre= $11.25

4 metre= $12

5 metre= $12.75

6 metre13.50

Answer:

6-3=3

3 is the answer because they gave you the value of Y and Z then they asked you to subtract

Answer:

a)

The discount id 40%, so the function is:

b)

The graph is attached

c)

Sale price is:

Answer:

please give me some thanks please good morning

Answer:

128.57 degrees per each interior angle

Step-by-step explanation:

For interior angles of regular polygons, all you have to do is add 180 degrees to the sum for each side added. For example, from triangle to quadrilateral, you would do 180 + 180 to get 360. Then from quadrilateral to pentagon, you would do 360 + 180 = 540. Do that all the way up to a heptagon and you get a sum of 900 degrees. 900 divided by seven angles will get you 128.57 degrees per interior angle.

Answer:

each interior angle = 128.6°

Step-by-step explanation:

Sum of interior angles of  a polygon with n sides = ( n - 2) x 180°

Given n = 7

So, sum of interior angles = ( 7 - 2 ) x 180 = 900°

Given it is regular,

      therefore each interior angle :

                                             [tex]\frac{900}{7} = 128.6^\circ[/tex]

Answer:

x=3, y=-1

Step-by-step explanation:

[tex]3x+y=8, 2x-2y=8[/tex]

Double the first equation, then add the second

  6x+2y=16

+ 2x-2y=8

The y's cancel each other out.

8x=24

x=3

Solve for y

6-2y=8

2y=-2

y=-1

Double check:

6(3)+2(-1)=16

18-2=16

Yay!

Answer:

A.equal to

Step-by-step explanation:

thats the answer correct me if you want

Answer:

10 ?

Step-by-step explanation:

need a picture.

but if 2 angles are 130 and the other 2 are 5x then x has to be 10

Answer:

a. 135 is the correct answer

Step-by-step explanation:

Want to find out what the total degrees is of the octagon.

Octagon = 1080

Divide 1080 by 8

135 degrees per angle

Answer:

Option A is correct

Step-by-step explanation:

Hint :

Sum of angles in Regular Octagon = 1080°.

Simplify :

[tex]∴z = 135[/tex]

Answer:

Alternate Interior Angles

Step-by-step explanation:

They are alternate interior angles. The reason this works is because 4 is opposite to 3, meaning that 4 is equivalent to the value of (180-Angle3)

Meanwhile 6 is equivalent to (180-Angle5). Angle 5 is the same value is Angle 4.

Answer:

2+(2÷2)

2+1

3

La respuesta es 3 :)

Answer:

la mitad de dos mas dos es 2

Step-by-step explanation:

2+2= 4 la mitad de cuatro es 2

espero que ayude y diganme si me equivoque no entendi mucho la pregunta

porfavor denme brainslet o thanks me ayuda mucho que tengan un buen dia

Answer:

97

Step-by-step explanation:

360-117-146 is 97

Gimmi brainest answer :)

Answer:

7/10

Step-by-step explanation:

red + green = 50 + 20 = 70 marbles

Total marbles = 50 + 30 + 20 = 100 marbles

P(red or green) = 70/100

P(red or green) = 7/10

Answer:

If Zahara finishes a level in 201 seconds, she earns:

Step-by-step explanation:

To identify the number of points that Zahara obtained when she finished a level in 201 seconds, you must use the given expression:

Where:

As Zahara took 201 seconds to finish a level, we're gonna replace this value in the equation:

As you can see, Zahara obtains 294.5 points if she finishes the level in 201 seconds.

Answer:

creating then into points for a graph

Hola aquí va la respuesta...!!!

[tex]Which of the following are solutions to the equation below?

Check all that apply.

(2x + 3)2 = 10

3

A. x = 10 +

2

B. x=

7

C. x=-

D. X= V10-3

2

10 - 3

E. x=

F. x = - 0 +

NO

[/tex]

[tex] \bold{salu2}[/tex]

Espero que estés bien !

Answer:

\/10-3/2 and -\/10-3/2

Step-by-step explanation:

\/ is square root / is divided by

Answer: 0.033 liters or 33 ml each

Step-by-step explanation:

There are 33 liters of orange juice and 1,010 students to drink it.

If they are to drink an equal amount, you should divide the quantity of orange juice by the number of students who want to drink it:

= Quantity of orange juice / Number of students drinking

= 33 / 1,010

= 0.033 liters each

In milliliters this would be:

= 0.033 * 1,000 milliliters

= 33 ml each

Answer should be 21

=

189

9

=

21

Answer:

4/5

Step-by-step explanation:

Probability calculates the likelihood of an event occurring. The likelihood of the event occurring lies between 0 and 1. It is zero if the event does not occur and 1 if the event occurs.

For example, the probability that it would rain on Friday is between o and 1. If it rains, a value of one is attached to the event. If it doesn't a value of zero is attached to the event.

probability that a student selected at random takes math or science = probability a student takes maths + probability a student takes science

probability a student takes maths = number of maths students / total number of students

probability a student takes science = number of science students / total number of students

(500 / 2000) + (1100 / 2000) = 1600/2000 = 4/5

0.46

Step-by-step explanation:

23÷50= 0.46

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