HELP PLEASE BRAINLEST FOR ANSWER Which sample is biased?
Which is not baised
A.
A book store owner surveys 50 customers to find out if they like to read.

B.
Two students survey 100 people on the street asking for their favorite soda.

C.
A phone system randomly calls people living in a city asking for their favorite store.

D.
A computer program randomly emails a survey to customers to see if they are satisfied with the service.

5 vasos ya que en u litro cabe 100 entonces en medio ay 50 y 10 cabe 5 veses en el 50

Answer:

a- x>-2

b- (in the picture)

c- x>-23

Step-by-step explanation:

Answer:

[tex]36[\cos{127^\circ}+i\sin{127^\circ}][/tex]

Step-by-step explanation:

Polar form:  [tex]z=r(\cos(\theta)+i\sin(\theta)[/tex]

To multiply two complex numbers in polar form, multiply the r values and add the angles.

[tex]w_1w_2=36\left[\cos{(95^\circ+32^\circ)}+i\sin{(95^\circ+32^\circ)}\right]\\\\=36[\cos{127^\circ}+i\sin{127^\circ}][/tex]

Answer:

B. ​No, because while there is no linear​ correlation, there may be a relationship that is not linear.

Step-by-step explanation:

Relationships between variables are diverse and fitted model of a dataset for each of the models will usually differ. That is the lebl of association between variables for a linear model may differ and better than a quadratic model or an exponential may perform. For r = 0 ; this means no relationship exists between the variables, however , this is the information for the linear model, which clearly depicts that no assicitio exist for the linear fit. A model change could result in a differ and slightly or highly correlated R value.

Answer:

5 inches

Step-by-step explanation:

pythagorean theorem

Answer:

The length of the missing side is 5 inches.

Step-by-step explanation:

a^2 + b^2 = c^2

12^2 + x^2 = 13^2

144 + x^2 = 169

x^2 = 25

x = 5

Answer:

probably a 60%

Step-by-step explanation:

Answer:

5/44

Step-by-step explanation:

3 plus 4 plus 5 is 12 so for a white it is 4/12 or 1/3

then you take out the white baseball and you want a green which is 5/11 3 red 3 white 5 green

5/11 times 1/3 is 5/33

so the odds of picking both is 5/33

Answer:

Y = 28.31

Z = 13.29

Angle A = 28

Step-by-step explanation:

For Angle A:

Remember a triangle has a total of 180 degree angles. So set up your formula as

180 - 62 -90 = Angle A

For Y:

The sine of an angle is equal to the ratio of the opposite side to the hypotenuse.  

sin (B) = opp/hyp or b/c or (y)

sinB = 62

b = 25

Rewrite as c=b/2SinB -> c=25/sin62 -> Y = 28.31

For Z:

Use the Pythagorean theorem to find the unknown side.

[tex]z^{2} = 28.31^{2} - 25^{2}[/tex]

z = 13.29

Answer:

Step-by-step explanation:

[tex] \sqrt{81 \times 25 \times 4} [/tex]

Since,

[tex] \sqrt{a \times b \times c} = \sqrt{a} \times \sqrt{b} \times \sqrt{c} [/tex]

Hence,

[tex] = \sqrt{81} \times \sqrt{25} \times \sqrt{4} [/tex]

= 9 × 5 × 2

= 90 (Ans)

Answer:

[tex]\sqrt{81*25*4} =90[/tex]

Step-by-step explanation:

Thanks!!

Have a great day!!

Answer:

I think it's D

Step-by-step explanation:

Answer:

I think it is C.

Step-by-step explanation:

I think it's C because the 2 is showing how long it took to get to the library.

Answer:

The correct anwer is 0.363

Step-by-step explanation:

Got a 100% on edge quiz

Answer:

They are 24, 692 feet aprart

Step-by-step explanation:

Let us assume at the instance we are measuring their position, that Pluto is at the highest point in the air, which is = 24,568 feet, and Goofy is at the lowest point of the sea (that he can go) = 124 feet.

Before we can proceed with the addition, we need to establish a datum, which will serve as the reference point from which the two distances are measured. This definitely is the sea level, because altitude and depth are usually measured above and below sea level.

Pluto's location to the sea level = 24,568 feet

Goofy's Location to the sea level = 124 feet

their distance apart = 24,568 feet + 124 feet =24, 692 feet apart

Answer:

60

Step-by-step explanation:

To find the range you subtract the highest and lowest value

The highest value on this graph is 105 from the month of May and the lowest value is 45 from the month of March.

When you do 105-45 you get 60 which is the range

6 x -2 = -12

-12 = 3, -4

y = 6x^2 + 3x - 4x - 2

y = 3x(2x + 1) - 2(2x + 1)

(2x + 1) (3x - 2) = 0

2x = -1, 3x = 2

x = -1/2, 2/3

pls give brainliest im trying to level up :))

Answer:

(2x+1)(3x-2)

Step-by-step explanation:

Given :-

We need to factor out the given expression. For that we may use the middle term splitting method. Taking the equation,

[tex]:\implies[/tex] y = 6x² - x - 2

[tex]:\implies[/tex] y = 6x² - 4x + 3x-2

[tex]:\implies[/tex] y = 2x ( 3x -2) +1( 3x -2)

[tex]:\implies[/tex] y = (2x + 1)(3x -2 )

Answer: 601 square inches

Step-by-step explanation: the surface area of the cube is 486 sq in. so add that with 115, you get 601 sq in.

Hope this helps!

Answer:

601 square inches

Step-by-step explanation:

Answer: [tex]75\ ft^2[/tex]

Step-by-step explanation:

Given

The dimension of playspace is [tex]10\ ft\times 12\ ft[/tex]

If the length and width is increased by 3 ft

New length is  [tex]13\ ft[/tex]

New width is [tex]15\ ft[/tex]

So, the dimension becomes [tex]13\ ft\times 15\ ft[/tex]

The difference between the areas of the playspace is

[tex]\Rightarrow 13\times 15-10\times 12\\\Rightarrow 195-120=75\ ft^2[/tex]

Answer:

11

Step-by-step explanation:

All angles on a triangle equal 180. 80+60=140.

Now to solve for x, we set it to equal 40 for 180-140.

40=3x+7. 40-7=33

33=3x 33/3=11

x=11

Answer:

96 tiles

Step-by-step explanation:

The kitchen floor is rectangular on shape.

The dimensions of the kitchen floor were 8 feet by 12 feet.

Hence, Area of a rectangle = Length × Width

Length = 8ft

Width = 12ft

Hence:

Area = 8ft × 12ft

= 96 ft²

If each tile was 1 square foot, the number of tiles he would need is

1 ft² = 1 tile

96 ft² = x

Cross Multiply

1ft² × x = 96 ft² × 1 tile

x = 96 ft² × 1 tile/1 ft²

x = 96 tiles

Therefore, Mark's father would need 96 tiles

Answer:

30 cm

Step-by-step explanation:

add all sides and use 7 for the bottom line because 5+2=7 and use 8 for the side because 5+3=8.

Answer:

-1 if i'm correct.

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

Answer:

3

Step-by-step explanation:

4-3x=7-4x

4=7-1x

-3=-1x

3=x

Answer:

True

Step-by-step explanation:

2(x+3) = 5x+6-3x

2x+6=5x-3x+6

2x+6=2x+6

Answer

True

Step-by-step explanation:

Cause 2×X=2x and 2×3=6

so total = 2× + 6 =5× + 6 - 3x

or, 2x + 6 = 5x - 3x + 6

or, 2x + 6 = 2x + 6

Answer:principal. Amount of money originally borrowed in a loan. interest. Amount of money the borrower must pay for the use of someone else's money.

Step-by-step explanation:

Answer: The answer is principal

Step-by-step explanation:

It's in the definition of the word principal which means the amount f money originally deposited, borrowed, or loaned.

Answer:

51 degrees

Step-by-step explanation:

All right angles are 90 degrees and all triangles interior angles add up to 180.

39+90=129

180-129=51

Answer:

The answer is 65.97 yd^3

Step-by-step explanation:

The volume of a cone is: v = [tex]\pi r^{2}\frac{h}{3}[/tex]

So, v = [tex]\pi[/tex](3^2)(7/3) = 65.97345 yd^3

Answer: D

Step-by-step explanation: Hope this help :D

Answer: square

Step-by-step explanation: I had the same question guessed and got it right

Answer: it should be undefined

Step-by-step explanation:

Answer:

Surface area = 80yd

Step-by-step explanation:

4x3 + 4x4 + 4x3 + 4x4 + 4x3 + 4x3 = 80

hope this helped :D

Answer:

51 degrees

Step-by-step explanation:

the sum of all angles in a right triangle is 180 degrees.

we know two of the three angles

90

39

therefore we take

180 - 90 - 39 = 51