Sheet 3
Functions - Ordered Pairs
A) State whether each set of ordered pairs represents a function.
1) {(0, 2), (15,-2), (3,7), (2,5),(-2,-4), (1,7), (-11,7)}
2) {(-11, -2), (20, 15),(-12,0), (19,-13)}
I
3) ((16,-4), (9,-1), (3,-2), (8, -1), (13,0), (-17, 16)}
4) {(-8, -13), (-7,3), (5, -9), (-7, 18), (4,3), (0, -10)}

Answer:

1st term= 8 2nd term=6 3rd term=4 4th term=2 5th term=0 6th term=-2 7th term=-4 8th term=-6 9th term=-8 10th term=-10

Step-by-step explanation:

hope this helps

Answer:

H:Median

Step-by-step explanation:

We know that Median means the middle, and we know that lines AB or in the middle of the page.

Step-by-step explanation:

tan30° = Opposite/Adjacent = 3/x.

=> 3/x = √3/3, x = 3√3 = 5.2.

sin30° = Opposite/Hypotenuse = 3/y.

=> 3/y = 1/2, y = 6.

The correct answer is the 1st and 3rd options.

Answer:

[tex] \huge \boxed{ \boxed{ \sf \: x = 5.2 \atop\sf y = 6}}[/tex]

Step-by-step explanation:

according to the question

[tex] \tan( {30}^{o} ) = \frac{3}{x} [/tex]

[tex] \frac{ \sqrt{3} }{3} = \frac{3}{x} \\ x\sqrt{3} = 9 \\ x = \frac{9}{ \sqrt{3} } \\ x = 3\sqrt{3} \\ x = 5.2[/tex]

according to the question

[tex] \sin( {30}^{o} ) = \frac{3}{y} [/tex]

[tex] \frac{1}{2} = \frac{3}{y} [/tex]

[tex]y = 6[/tex]

Answer:

$4.57. Hope this helps :)

Step-by-step explanation:

20+5=25      

then you do

25-3.67= $21.33

you then divide that by the number of pounds she bought.

21.33/4= 5.3325

round that to the hundreths place and you get $5.33

so she paid $5.33 for a pound

Answer:

$4.74 per pound

Step-by-step explanation:

((20 + 5) – 3.67) / 4.5 = (25 – 3.67) / 4.5 =

(21.33) / 4.5 = 4.74

_______________________________

I've seen this same problem before, it should be 4.5 pounds.

Answer:

0.088

22x4 is 88 and add the 2 zeros

Step-by-step explanation:

Answer:

0.088.

Step-by-step explanation:

0.22 * 0.4

Now 22 * 4 = 88 and

there are 3 numbers after the decimal points in 0.22 and 0.4 so there has to be 3 numbers after the decimal point in the answer, so it's:

0.088.

Answer:

Chris gets £3000

Step-by-step explanation:

A : B : C

1 : 3 : 4 = 8 (add all the parts together)

£6000 ÷ 8 = 750

so the multiplier is x 750

1 : 3 : 4

↩ x 750

750 : 2250 : 3000

Chris gets £3000

It's alright, you're not stupif. It's just a little bit complicated if it's either your first time doing it or has been a while since you did it last.

r: 16 km. d: 32 km.

The Formula is: C = 2πr. Because it says below the rest of the data that we use 3 for pi, and since we have r, which is 16, the equation becomes C = 2(3)(16).

The answer becomes 96 Kilometers.

Answer: 38.31 inches

Step-by-step explanation:

We can think on the round lamp as a circle, then the inches of beads that she will need to go around the lamp is equal to the perimeter of the lamp.

The perimeter of a circle of diameter D, is:

Perimeter = pi*D

where pi = 3.14

In this case, we know that the diameter is 12.2 inches.

Replacing that in the above equation we get that the diameter of the lamp is:

Perimeter = 3.14*12.2 in = 38.31 in

Then Michelle needs 38.31 inches of the beads to go around the lamp.

True

Even though it landed on heads 8/10 times, ther's still a 50% chance that it will land on tails. It doesn't change the percentage of it landing on either side. So in that case, it is true.

Hope this helps!

The statement, A coin is flipped 10 times and lands on heads 8 times. The theoretical probability that the next coin flip will be heads is 50% is True.

The probability of an occurrence is a figure that represents how likely it is that the event will take place. In terms of percentage notation, it is expressed as a number between 0 and 1, or between 0% and 100%.

here, we have,

we know that,

The higher the likelihood, the more likely it is that the event will take place. A definite occurrence has a chance of 1 while an impossible event has a probability of 0.

we have,

When a coin is flipped the probability of getting a heads and a tail is 50%.

Hence, without the consideration of the flips and the result the theoretical probability that the next coin flip will be heads is 50%.

The statement, A coin is flipped 10 times and lands on heads 8 times. The theoretical probability that the next coin flip will be heads is 50% is True.

Learn more about probability here:

brainly.com/question/30034780

#SPJ2

Answer:

y> -1

Step-by-step explanation:

2(5y-7) > -24

Then use the Distributive Property which then eqauls to this: 10y - 14 > -24

add 14 to both sides: 10y > -10

divide by 10: y> -1

Answer:

Hey we go to the same schoola and have the same class so thats cool. Also i think it might be the reverse of what we did on question five where we divide the measure of the arc by two instead of multiplying the angle by two to get the arc. If this is true then our answer will be 49*

Step-by-step explanation:

Answer:

Yes

Step-by-step explanation:

If they do not run into each other then yes

Answer:

ya it has 2 pairs of parallel sides.

Step-by-step explanation:

Answer:

Step-by-step explanation:

Diameters of potatoes:

Median is:

After one potato used the median becomes 5 cm.

Out of 6 potatoes left, the two in the middle should give 5 cm in average

This is 4 cm and 6 cm.

Renee must have used one of the 4 potatoes on the left: 2 cm, 3 cm or 4 cm

Answer:

no

Step-by-step explanation:

Answer:

750 tickets were sold

Step-by-step explanation:

Answer:

750, I now give dog

Step-by-step explanation:

Answer:

Number is 4

Step-by-step explanation:

.03n = 1

n = 1/.03

.12 x (1/.03) = 4

Answer:

Step-by-step explanation:

[tex]step - 1 : define[/tex]

[tex](x + 8)( x + 13) = 234[/tex]

[tex]step - 2 : slove[/tex]

[tex] \therefore \: x = 5 \\ and \: the\: lenth \: of \: the \: rectangle \: is \: 5 + 8 = 13[/tex]

Answer:

1 hour and 45 minutes

and 1 hour

Step-by-step explanation:

x= run

y= walk

5x+2.5y = distance

5x+2.5(1.5)=12.5

solve for x

5x=8.75

x=1.75

1.75 in hours is 1 hour and (60*.75)=45

1 hour and 45 minutes

" If the marathon race participant ran for 2 hours, how many hours did the participant walk?"

We use the same equation

5x+2.5y=distance

we'll assume that they till walked 12.5 miles

which means that

5(2)+2.5y=12.5

solve for y

2.5=2.5y

y=1

1 hour

Answer:

Everybody, everybody

Get out on the floor

It can get a little crazy

When the kick hits the floor

Make a scene Make a scene

Nobody can ignore

Don't knock it, til you rock it

We can't take it no more!

Bring the lights up!

Bust the doors down!

Dust yourself off,

Shake it up!

Shake it up!

DJ set it off!

Take it up a notch

All together now!

Shake it up!

Shake it up!

Step-by-step explanation:

Answer:

50+0+0+0

Step-by-step explanation:

50+0+0+0 is the answer

Answer:

Step-by-step explanation:

Factor x2 +8x +16, so (x+4)2 = 100

Answer:

z = 15

Step-by-step explanation:

(I quit brainly because, they deleted 1000+ answers from my account....) however if I want to see answers than I think I have to answer some questions so I'll answer this one.

First we know that y would be 180.

Therefore CD=90

y-cd=90

90=5z+z

90=6z

90=6(15)

90=90

or

90=5z+z

90=6z

/6    /6

15 = z

z = 15

Answer:

85.2$

Step-by-step explanation:

Given:

The area model.

To find:

The area as a sum and area as a product.

Solution:

The four terms of the area model are [tex]2x^2,10x, 3x, 15[/tex].

The area as a sum is the sum of all the terms of given area model.

Area as a sum = [tex]2x^2+10x+3x+15[/tex]

                        = [tex]2x^2+13x+15[/tex]

The area as a product is the factor form of sum of all the terms of given area model.

Area as a product = [tex]2x^2+10x+3x+15[/tex]

                        = [tex]2x(x+5)+3(x+5)[/tex]

                        = [tex](x+5)(2x+3)[/tex]

Therefore, the area as a sum is [tex]2x^2+13x+15[/tex] and the area as a product is [tex](x+5)(2x+3)[/tex].

Answer:

This system has no solutions

Step-by-step explanation:

y=2x-9,

y=-2x+15

by substitution:

2x - 9 = 2x + 15

2x - 2x = 15 + 9

0 ≠ 24

This system has no solutions

Answer:

42

Step-by-step explanation:

Test worth = 50

To obtain a grade percent = 84%

Score to obtain = x

Using the expression :

84% of test worth = x

84/100 * 50 = x

0.84 * 50 = x

42 = x

Score to obtain = 42

Answer:

70.4metres

Step-by-step explanation:

Wheel Diameter = 0.7m

Wheel Radius; 0.7m / 2 = 0.35m

For one rotation of the wheel, the distance travelled = circumference of the wheel.

Circumference = 2 x pi x radius

= 2 × π × r

= 2 × π × 0.35

= 2.1991148575 m

Elaine tries to ride the unicycle and manages to go in a straight line for 32 full revolutions

Distance travelled with 32 full revolutions of the wheel = 32 x 2.1991148575 m =

Distance in meters = 70.37167544m

Approximately = 70.4m

Therefore, Elaine managed to cycle 70.4metres

Answer: lol why so expensive.

Answer: B

Step-by-step explanation: because 2/3 = 0.66666, So 0.66 is greater than 0.6           Hope this helps. pls mark me brainliest :)