Why is the set {(3,6), (4,8), (5 , 10), (3, 1), (6, 12), (7, 10)} NOT a function?
A. The ordered pairs are not in ascending order.

B. The ordered pairs do not all follow the rule y = 2x.

С. 3 is mapped to both 1 and 6.

D. Both 5 and 7 are mapped to 10.

Answer:

19cm

Step-by-step explanation:

7+4=11

a²+b²=c²

7²+4²=c²

c²=49+16=65

√8+7+4=19cm

Answer:

Each side would be 3 units.

Step-by-step explanation:

If the perimeter of the circle is 12 units and there are 4 sides on a square and all of those sides need to be equal all you must do is divide the number of units by the number of sides to get your answer of 3 units.

Hope I could help! :)

Answer:

No. of boys = 15

Step-by-step explanation:

Given that,

The ratio of boys to student is 3:7.

Number of girls in the school = 20

We need to find the number of boys in the school.

Let there are 3x boys and 7x number of students.

No. of girls = Total students - no. of boys

= 7x-3x

= 4x

ATQ,

4x = 20

x = 5

No. of boys = 3x

= 3(5)

= 15

Hence, there are 15 boys in the school.

Answer:

The answer would more than likely to be 4..

because u divide 5 on both sides and it will give you x=4

Step-by-step explanation:

Answer:

120 because he left the tip and you have to divide the tip by the total cost

Step-by-step explanation:

Answer: 11

Step-by-step explanation: m<2 is equal to 42. This also means that 3x+9 is equal to 42.

3x+9=42, solve for x. Subtract 9 from both sides. 3x=33, divide by three to get X isolated. X= 11

Answer:

2x-1

Step-by-step explanation:

the answer is the second option. I just took the test

Answer:

[tex]y= 30-0.85x[/tex]

Step-by-step explanation:

Given data

Height of building= 30ft

We are told that after the ball landed it bounced 85% the height

let the new height be y

So the expression for the new height for x number of bounces is

[tex]y= 30-0.85x[/tex]

Answer:

5/6 - 2/5 = 13/30

I hope this helps

Step-by-step explanation:

Answer:

2/7 +3/8

2 × 8

7 × 8

+

3 × 7

8 × 7

=  

16

56

+ and  your  answer is  37/56

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

17.5-9.5=8

[tex]4\sqrt{8}[/tex]=2

Each bag of dog food weight 2 pounds.

Answer:

1. 0

2. 14

3. -6

4. 22

Step-by-step explanation:

Plug in the equations into a calculator and sub (x) for a number.

Answer:

12$

Step-by-step explanation:

10% of 10 is 1$ 20% of 10 is 2$ so the answer is 12$

Answer:

Equation of the straight line passing through the point ( 1,2 ) and having the slope

 x - √3y -1+2√3 =0

Step-by-step explanation:

Step(i):-

Given that the point (1,2) and an angle = ∝ = 30°

The slope of the line

             m = tan 30°

             [tex]m = \frac{1}{\sqrt{3} } }[/tex]

Step(ii):-

Equation of the straight line passing through the point ( 1,2 ) and having the slope

 [tex]m = \frac{1}{\sqrt{3} } }[/tex]

           y - y₁ = m(x-x₁)

          y - 2 = [tex]\frac{1}{\sqrt{3} } }[/tex] ( x -1)

        √3(y-2) = (x-1)

⇒       √3y - 2√3 = x -1

           x - √3y -1+2√3 =0

Answer:

Step-by-step explanation:

place x = 19

f(19) = 3 / 19 + 2 - Sqrt 21 - 3

= 3/21 - 4

= - 81/21

= - 27/7

Answer:

f(19) = - [tex]\frac{27}{7}[/tex]

Step-by-step explanation:

Given

f(x) = [tex]\frac{3}{x+2}[/tex] - [tex]\sqrt{x-3}[/tex]

To evaluate f(19), substitute x = 19 into f(x) , that is

f(19) = [tex]\frac{3}{19+2}[/tex] - [tex]\sqrt{19-3}[/tex]

       = [tex]\frac{3}{21}[/tex] - [tex]\sqrt{16}[/tex]

       = [tex]\frac{1}{7}[/tex] - 4

       = [tex]\frac{1}{7}[/tex] - [tex]\frac{28}{7}[/tex]

       = - [tex]\frac{27}{7}[/tex]

Complete question :

A cooler contains 4 L of water. The cooler has marks on it at every 0.2 L. Water bottles are filled with water from the cooler, and each bottle holds approximately 4/9L. After 4 water bottles are filled, between which two marks is the water level in the cooler? Show your work.

Answer:

2.2 - 2.4 Litre

Step-by-step explanation:

Capacity of cooler = 4L

Marking on cooler = every 0.2L

Capacity of bottle = 4/9 L

Number of bottles filled = 4

Total volume filled = (4/9) * 4 = 16/9 L = 1.78L

Volume of water left in tank :

(4 - 1.78)Litre

= 2.22 litres

Since, the tank is marked at 0.2 L interval ; the water level will be between 2.20 to 2.40 litres

Answer:

She has completed 15% of her deliveries.

Answer:

34,320 are cars

Step-by-step explanation:

65% of 52,800 is 34,320

Answer:

x = (7/3,0)

y = (0,-14)

Step-by-step explanation:

make an equation

y = 6x - 14

solve

Answer: 51/250

Step-by-step explanation:

Answer:

Step-by-step explanation:

51/250\

hope it helps

Answer:

6 ways

Step-by-step explanation:

Given that:

Number of options, n = 4

Combo, r = 2

Using Combination :

nCr = n! ÷ (n-r)! r!

4C2 = 4! ÷ (4-2)!2!

4C2 = 4! ÷ 2!2!

4C2 = (4 * 3) / (2 * 1)

4C2 = 12 / 2

4C2 = 6

Answer:

Step-by-step explanation:

Since the tax is 17¢, then you have to subtract that from 14.58

14.58-.17=14.41

14.41/6

$2.40

Answer:

−3x+ −3/5y

Step-by-step explanation:

Answer:

1st number:  3

2nd number:  18

3rd number:   19

Step-by-step explanation:

let 'f' = 1st number

let '6f' = 2nd number

let '6f + 1' = 3rd number

f - 2(6f + 1) = -35

f - 12f - 2 = -35

-11f - 2 = -35

-11f = -33

f = 3

Answer:

1: (4,1) x=4 y=1

2: (1,10) x=1 y=10

3: (-25/4,5) x= -25/4 y=5

Step-by-step explanation:

It would be a lot to explain all three so if you really need it just ask