nine of 20 people surveyed preferred chocolate ice cream to vanilla ice cream . what percentage prefered chocolate ice cream? what fraction prefered vanilla ive cream

9514 1404 393

Answer:

  8. A = {Delaware, New Jersey, Pennsylvania}

  9. |B| = 3

Step-by-step explanation:

8. Dates prior to 1 Jan 1788 are those in 1787. The three states admitted in 1787 are listed as Delaware, Pennsylvania, New Jersey. It is usually convenient to list elements of a set in lexicographical order:

  A = {Delaware, New Jersey, Pennsylvania}

__

9. The months June and July appear 3 separate times on the list, so there would be 3 elements in the set B.

  |B| = 3

Answer:

1

Step-by-step explanation:

x-9=-8

x=-8+9

x=1

Surface Area=2400

Step-by-step explanation:

To find the surface area we need to use this formula: Surface Area=6a^2

Where a is the side lengths that are being provided by the cube, now we plug in 20 as a into the formula.

Surface Area=6(20)^2

Surface Area=6(400)

Surface Area=2,400

Hope I helped, have a nice day :)

Answer:

2400

Step-by-step explanation:

[tex]SA = 2(lw + lh + wh) = 2(20^2 + 20^2 + 20^2) = 2(3 * 20^2) = 2(3 * 400) = 2 * 1200 = 2400[/tex]

Answer:

1:3

Step-by-step explanation:

7:21

1:3

so , 7:21 is 1:3.

Answer:

x = 3.2

Step-by-step explanation:

Since they are similar the ratio of the side lengths must be the same

Using the bottom side and the unknown side from the left figure and the right figure

5            4

----- = --------

4            x

Using cross products

5x = 4*4

5x = 16

Divide by 5

x = 16/5

x =3.2

Answer:

[tex]x=\sqrt{5}i,\:x=-\sqrt{5}i[/tex]

Answer:

85

Step-by-step explanation:

4 - (7 x 4 x -3) + -3

4 - (28 x -3) -3

4 - (-84) -3

88 - 3

85

Answer:

https://www.gigacalculator.com/calculators/volume-of-sphere-calculator.php this the link for the marth calculate

find the volume of a sphere. Only a single measurement needs to be known in order to compute the volume of a sphere and that is its diameter. For example, if the diameter is known to be 20 feet, then calculate the volume by using the first formula above to get 4/3 x 3.14159 x (20/2) 3 = 4.1866 x 1000 = 4188.79 ft 3 (cubic feet).

Answer:

46

Step-by-step explanation:

the number is 46

Answer:

Step-by-step explanation:

Let us first find the hypotenuses of the right triangle.

[tex]c=\sqrt{12^2+9^2} =\sqrt{225} = 15[/tex]

[tex]sin(theta) = 12/15 = 4/5\\cos(theta) = 9/15 = 3/5\\tan(theta) = 12/9 = 4/3\\csc(theta) = sin(theta)^{-1} = 5/4\\sec(theta) = cos(theta)^{-1} = 5/3\\cot(theta) = tan(theta)^{-1} = 3/4[/tex]

Answer:

12 (the third one is the greatest common factor of 120 and 84)

Answer:

12

Step-by-step explanation:

factors of 120. 1,2,3,4,5,6,8,10,12,15,20,24,30,40,60,80,120

factors of 84: 1,2,3, 4,6,7,12,14,28,42,84

greatest common factor=12

Answer:

115 hours.

Step-by-step explanation:

35+70=105

105+10=115 hours

Answer:

poooop

Step-by-step explanation:

ahhh this is easy first eat pizza then poop easy

Answer:

1979

91%

Step-by-step explanation:

Given the relation :

P = (318t + 6792) / (1.19t + 107.36)

P = % of household with PC

t = years since 2000

1.) We need to find t, when P = 85%

P = 0.85

0.85 = (318t + 6792) / (1.19t + 107.36)

0.85(1.19t + 107.36) = (318t + 6792)

1.0115t + 91.256 = 318t + 6792

Collect like terms :

1.0115t - 318t = 6792 - 91.256

−316.9885t = 6700.744

t = 6700.744 / - 316.9885

t = - 21.138760

t = - 21 years

2000 - 21 years = 1979

Percentage who had computer in 2014

t = 2014 - 2000 = 14

P = (318(14) + 6792) / (1.19(14)+ 107.36)

P = (4452 + 6792) / (16.66 + 107.36)

P = 11244 / 124.02

P = 90.6627

P = approximately 91%

Answer:

option b

Step-by-step explanation:

fourth degree trinomial

Answer:

b=2A/h

Step-by-step explanation:

[tex]A = \frac{1}{2} bh \\ \\ \therefore \: 2 A = bh \\ \\ \therefore \: b = \frac{2 A}{h} [/tex]

Answer:

b = 2A/h

Step-by-step explanation:

To isolate b, you should first "get rid" of the 1/2. The best way to do this to multiply both sides of the equation by 2. The left side becomes 2A, while the right becomes bh (1/2 multiplied by its reciprocal, 2, becomes 1). Next, you have to move the h to the left side, and you could do so by dividing both sides by h. The left side becomes 2A/h, and the right is just b by itself, getting you b = 2A/h.

Answer:

5x - y = 10x + 3y = 4

5x - y = 4..... 1

10x + 3y = 4.....2

multiply by -2 in eq 1 in both sides

-10x + 2y = -8

10x +3y = 4

eliminate one variable by adding the equations

5y = -4

y = - 4/5

sub the value of y in..1

5x - y = 4

5x + 4/5 = 4

5x = 16/5

divide by 5 on both sides

x = 16/25

(x ; y)

(16/25 ; -4/5)

Answer:

the answer is 13a3b4. You’ll get the answer correctly. It’s not C

Step-by-step explanation:

Answer:

2/13

Step-by-step explanation:

For a deck of card

Total cards = 52

Total spade = 4

Total diamond = 4

pr(drawing a spade) = number of spade/total cards

pr(drawing a spade) = 4/52 = 1/13

pr(drawing a diamond)  = 4/52 = 1/13

Pr(diamond or a spade) = 1/13 + 1/13 = 2/13

Answer:

0.0688 = 6.88% probability that you reach into the jar and randomly grab a nickel and then, without replacement, a penny.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

Probability of grabbing a nickel:

19 nickels out of 17+10+19+23 = 69 coins, so:

[tex]P(A) = \frac{19}{69}[/tex]

Probability of grabbing a penny, considering the first coin grabbed was a nickel:

17 pennies out of 68 coins. So

[tex]P(B|A) = \frac{17}{68} = \frac{1}{4}[/tex]

What is the probability that you reach into the jar and randomly grab a nickel and then, without replacement, a penny?

[tex]P(A \cap B) = P(A)P(B|A) = \frac{19}{69} \times \frac{1}{4} = \frac{19}{69*4} = 0.0688[/tex]

0.0688 = 6.88% probability that you reach into the jar and randomly grab a nickel and then, without replacement, a penny.

Answer:

Here the general formula is

[tex]P(X\leq x_{0} )=1 - e^{\frac{-x_{0}}{2} }[/tex]

a) [tex]P(X\leq 2 )= 0.6321[/tex]

b) [tex]P(X\geq 3 )= 0.2231[/tex]

c) [tex]P(X\leq 5 )= 0.9179[/tex]

d) [tex]P(2\leq X\leq 5 )= 0.2858[/tex]

Step-by-step explanation:

Now the solutions are,

a)

[tex]P(X\leq 2 )=1 - e^{\frac{-2}{2} }\\P(X\leq 2 )= 0.6321[/tex]

b)

[tex]P(X\geq 3 )=1-[1 - e^{\frac{-3}{2} }]\\P(X\geq 3 )= 0.2231[/tex]

c)

[tex]P(X\leq 5 )=1 - e^{\frac{-5}{2} }\\P(X\leq 5 )= 0.9179[/tex]

d)

[tex]P(2\leq X\leq 5 )=1 - e^{\frac{-5}{2} }-1 - e^{\frac{-2}{2} }\\P(2\leq X\leq 5 )= 0.2858[/tex]

Answer:

13 ft

Step-by-step explanation:

Perimeter is 48 so all four sides add to 48

You know width is 11 so 2x11 is 22.

Subtract the width from the total 48-22=26

Then because you are missing 2 sides divide the answer by 2.

26/2=13

Answer:

When you use a debit card, the funds for the amount of your purchase are taken from your checking account in almost real time. When you use a credit card, the amount will be charged to your line of credit, meaning you will pay the bill at a later date, which also gives you more time to pay.

Step-by-step explanation:

If this helps please mark as brainliest

Debit is a deduction / subtracted amount so would have a negative value ( negative sign in front of the amount)

Credit is an addition so is a positive value.

Answer:

Step-by-step explanation:

6)   Statement                      Reasons

      ∠W = ∠Q                      Given

      WX = QX                      Given

     ∠1 = ∠2                          Vertically opposite angles

    ΔPXW ≅ ΔMXQ             A S A  congruent  (Angle side Angle)

7)    ∠1 = ∠4                          Given

     FH = HF                         Reflexive property

     ∠2  = ∠3                        Given

   ΔFGH ≅ ΔHEF               A S A  congruent  (Angle side Angle)

Answer:

i don't think you can compare statistics to data sets.

Step-by-step explanation:

Answer:

It can by being compared by using averages, box plots, the interquartile range and standard deviation.

You're welcome.