which relations are functions​

Answer:

when r=3 and s=5.

Step-by-step explanation:

Given : Expression  when r=3 and s=5

Substituting, r=3 and s=5

Therefore,  when r=3 and s=5.

Answer:

(2, -5)

Step-by-step explanation:

Using the midpoint formula - M= [tex](\frac{x_{1} +x_{2} }{2}, \frac{y_{1}+y_{2} }{2} )[/tex], we get that the x value of the point is 2 and the y-value of the midpoint is -5, so the midpoint of segment ST is (2, -5)

Answer: Fourth Choice. -46.08

Concept:

Here, we need to understand the idea of evaluation.  

When encountering questions that gave you an expression with variables, then stated: "If x = a, y = b, z = c" (a, b, c are all constants), this means you should substitute the value given for each variable back to the expression.

Solve:

Given information

s = 2.4

b=-7.2

t=4.8

n=-9.6

Given expression

(s - b) (n + t)

Substitute values into the expression

= (2.4 - (-7.2)) (-9.6 + 4.8)

Simplify values in the parentheses

= (2.4 + 7.2) (-4.8)

=(9.6) (-4.8)

Simplify by multiplication

= [tex]\boxed{-46.08}[/tex]

Hope this helps!! :)

Please let me know if you have any questions

Answer:

Step-by-step explanation:

s = 2.4

b = - 7.2

t = 4.8

n = - 9.6

Substituting the given values in the equation :-

= > ( s - b ) ( n + t )

= > ( 2.4 - ( - 7.2 ) ) ( - 9.6 + 4.8 )

= > ( 2.4 + 7.2 ) ( -4.8 )

= > ( 9.6 ) ( - 4.8 )

= > - 46.8

Answer:

199.5lbs,  199.6lbs, 199.7lbs, 199.8lbs, 199.9lbs

You can choose any of the 5

Answer:

$1.89

Step-by-step explanation:

Given Equation:

5b=9.45

What are we looking for?

b

We must solve by making b by itself:

5b=9.45

÷5      ÷5

b = 9.45/5

b = 1.89

Therefore, each box of cereal costs $1.89

Hope this helps!

Answer:

1739999200

Step-by-step explanation:

I am sorry, but I am simply not putting the explanation for that...

Answer:

2+2=4

Step-by-step explanation:

if you put up 2 fingers and then add 2 more (2+2) you will get 4!

lol I hope that helped!

Check the picture below.

Notice it's simply a 5x4 rectangle, and surely you know how to get its area.

Answer:

answer see below

Step-by-step explanation:

Draw four straight lines that are perpendicular to each other and use a compass to cut AB's length on each line to form a square.

Answer:

is there a image?

Step-by-step explanation:

1/4 + 2/3

= 3/12 + 8/12

=11/12

1–11/12

you have 1/12 left

Answer:

one-quarter left

Step-by-step explanation

pretty sure this is the answer, but i could be wrong

Answer:

Step-by-step explanation:

31) Multiply the entire equation by the LCM of 5 & 4 which is 20

[tex]20*\dfrac{2x^{2}}{5}+20*\dfrac{5x}{4}=10*20\\\\4*2x^{2}+5*5x = 200\\\\8x^{2}+25x - 200 = 0[/tex]

B

32) D

By trial & error method 17 * 15 = 255

33) x = 2

y = 4x² + 1

  = 4*2² + 1 = 4*4 + 1

  = 16 + 1

y = 17

B

34) D) all real numbers

35) Domain = all real numbers,

x = -2 ; y = -(-2+2)² - 7 = 0 - 7 = - 7

x = 0 ; y = -(0+2)² - 7 = -4 - 7 = -11

x = 4; y = -(4+2)² - 7 = - 6² -7 = -16 - 7 = - 23

C) y ≤ -7

36) t =  1 second

y = 160t - 40t² = 160*1 - 40*1² = 160 - 40

y = 120 m

C

37)  Let the number be 'x'

x² + x = 165

x² + 4x - 165 = 0

Sum = 4

Product = -165

Factors = 15 , -11      {15*(-11) = -165   & 15+ (-11) = 4}

x² + 15x - 11x - 165 = 0

x(x + 15) - 11(x + 15)=0

(x + 15)(x - 11) = 0

x + 15 = 0   ; x - 11 = 0

x = -15       ; x = 11

C

38) y = 3(x + 1)² - 2

Plugin x = -1   ; y = 3(-1 +1)² - 2 = 0 - 2

                        y = -2

(-1 , -2)

D

39) y = 3(x - 9)²  + 3

Plugin x = 9 ;   y = 3(9-9) + 3 = 0 + 3 = 3

B

Answer:

the answers are 94, 95, 96

Answer:

Angels 3 and 1 are vertical angels

Step-by-step explanation:

And they both have the same measurement since they are directly opposite of each other.

Answer:

y = - x +2

Step-by-step explanation:

Slope = -1

Point: (-3,5)

b = 5 - (- 1)(- 3)

= 5 - 3 = 2

Answer:

Since x (independent) is time and y (dependent) is temperature;

F(0)  =50 means; at the beginning which is 0 minutes, the temperature is 50F

f(120)>f(60) means the temperature after 120 min is bigger than the temperate after 60 min.

f(360) = f(345) means the temperature after 360 min and 345 min are the same  

f(390) < f(360) means the temperate after 390 min is less than the temperature after 360 min  

Step-by-step explanation:

Answer:

Since x (independent) is time and y (dependent) is temperature;

F(0)  =50 means; at the beginning which is 0 minutes, the temperature is 50F

f(120)>f(60) means the temperature after 120 min is bigger than the temperate after 60 min.

f(360) = f(345) means the temperature after 360 min and 345 min are the same  

f(390) < f(360) means the temperate after 390 min is less than the temperature after 360 min  

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

1 = 10%

9 = 90%

Answer:

hs kgo s 7th duk6xutf2 ki kwai uh dragnet hi 2hn kd7uhsjsmsjsuuejejejjeejje

Step-by-step explanation:

hopes this helps hu dujdtrdd72 heckle Chiang Huskies heavier kir https://vm.tiktok.com/ZM8fbk1KS/ackrabbits granite Kazmirhttps://vm.tiktok.com/ZM8fbk1KS/

Answer:

[tex]\frac{1+\sqrt{5} }{2}[/tex] or 1.62

Step-by-step explanation:

A cool thing about the fibonacci sequence is that if you divide two consecutive numbers, the larger they are, they approach the golden ratio. This means the approximate value would be the golden ratio which is [tex]\frac{1+\sqrt{5} }{2}[/tex].

Answer:

[tex]6+\frac{7!}{5!-8}[/tex]

Step-by-step explanation:

The only way to get this is by using advanced operations such as Factorials.

Answer:

13.89 m/s

Step-by-step explanation:

Velocity = displacement = time

75 km = 75000 m

1.5 hours = 5400 sec

applying the formula

velocity = 75000 m= 5400 s = 13.89 m/s

Answer:

Velocity= Displacement / Time

= 75/1.5

=50km/hr

Step-by-step explanation:

hope it helps

mark me brainliest pls

Answer:

Car A was 20 miles east of car B.

Step-by-step explanation:

just did it:)

Answer:

3/2

Step-by-step explanation:

rise over run

Answer:

12

Step-by-step explanation:

x=4

2×4+4

=12

I think this is the answer

Answer:

To find the mean, add up the values in the data set and then divide by the number of values that you added. To find the median, list the values of the data set in numerical order and identify which value appears in the middle of the list. To find the mode, identify which value in the data set occurs most often.