Chris is completing his chores. He has two chores remaining: dusting and vacuuming. Chris is having trouble deciding which chore to complete first. Which of the following best describes a method of assuring that each chore has a fair chance of being selected to complete first?
A.
There is no way to assure that each chore has a fair chance of being selected to be completed first.

B.
Roll an ordinary die. If the die lands on an even number, dust first. If the die lands on an odd number, vacuum first.

C.
Flip a fair coin two times. If the coin lands on heads on both flips, dust first. If the coin lands on tails on both flips, vacuum first. If the coin lands on a heads on the first flip and tails on the second flip, vacuum first. If the coin lands on tails on the first flip and heads on the second flip, flip again.

D.
Roll an ordinary die. If the die lands on one, dust first. If the die lands on two, vacuum first. If the dies lands on three, dust first. If the die lands on four, five, or six, roll again.

Answer:

C = 2*3.14*10 = 62.8 cm = P of square

Area=1/16 * p2

=

246.49 cm2

Answer:

3.2t-2.4

Step-by-step explanation:

-3.6 - 1.9t + 1.2 + 5.1t

Combine like terms

-3.6+ 1.2  - 1.9t +5.1t

-2.4        + 3.2t

Answer:  3.2t-2.4

Step-by-step explanation:

First thing you need to do is do   -1.9t+5.1t= 3.2t. Then you do -3.6+1.2= -1.2.

Then put all this together and you get 3.2t-1.2. (do not do 3.2t+-1.2 this incorrect because we left the subtracting sign

Just solve the equation

Given:

-2(3a+1) = 5(1+a)

-6a - 2 = 5 + 5a

11 a = -7

a = -7/11

Answer:

a = -7/11

Step-by-step explanation:

Distribute -2 and 5 through the parentheses, -6a - 2 = 5 + 5a

Move the Variable and constant  to a proper side, -6a - 5a = 5 + 2

Calculate like terms, -11a = 7

Divide both sides of the equation by -11, a = -7/11

Final answer, a = -7/11

Answer:

k = 21

Step-by-step explanation:

[tex]xy = k\\\\Plugging\: x = 7\: and\: y = 3,\: we\; find:\\7\times 3 = k\\21 = k\\\huge\red{\boxed{k = 21}}\\[/tex]

Answer:

Trapezoid

Step-by-step explanation:

None

Answer:

trapezoid

Step-by-step explanation:

Answer:

Option C

Step-by-step explanation:

Using the slope formula and the points in the picture: (3,12) (6,19)

[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

[tex]m=\frac{19-12}{6-3}=\frac{7}{3}[/tex]

The slope of the line is 7/3.

Option C should be the correct answer.

Answer:

Your correct answer is option C. 7/3

Step-by-step explanation:

Answer:

five years ago -- boy-   x+3 years

                           sister ---  x

ratio-- 4:3  so difference is 3 years

4-3-- 1   1--3

five years ago ---  sister  :3*3--9   brother : 4*3--12

present : sister 14 years and brother 17 years old

Step-by-step explanation:

Answer:

3 4/11.

Step-by-step explanation:

3/11 = 15/55

2/5 = 22/55

So a number in between  could be 20/55

= 4/11.

So the mixed number could be 3 4/11.

Answer:

2x - 3y = 18  (1)

5x + 9y = -10​   (2)

<=>

Multiply both sides of (1) by 5, and multiply both sides of (2) by 2, then:

10x - 15y = 90

10x + 18y = -20

Subtract (2) to (1):

=> 33y = -110 => y = -110/33

Substitute y back into (1):

=> 2*x - 3*(-110/33) = 18

=> 2*x + 10 = 18

=> 2*x = 8

=> x = 4

=> Solution: x = 4, y = -110/33

Hope this helps!

:)

Answer: x=4 y= -10/3

Step-by-step explanation:

Look at the attachment. It should explain.

Answer: 0

Step-by-step explanation: it would only be a different number if there’s an equation like y=2x 3

0000000000000000000000

Step-by-step explanation:

Well, if a = -1 and b = 4 then when we plug in the values of a and b into the expression we get:

[tex]13(-1)^{-3}\cdot4^{-1}[/tex].

Then simplify it:

[tex]-13\cdot1/4=-\frac{13}{4}[/tex].

The answer is A.

Hope this helps.

Step-by-step explanation:

Step 1:  Substitute -1 for a and 4 for b

[tex]13 * (-1)^-^3 * (4)^-^1[/tex]

[tex]13 * (-1) * \frac{1}{4}[/tex]

[tex]-\frac{13}{4}[/tex]

Answer:  Option A, [tex]-\frac{13}{4}[/tex]

Answer:

20+20+6+6+30+30=112cm^2

Step-by-step explanation:

Answer:

112 meters squared

Step-by-step explanation:

Surface Area = 2×(3×2 + 3×10 + 2×10) = 112 meters squared

Answer:

see below

Step-by-step explanation:

Starting with 50

Took out 20

50-20 = 30

Then the balance was 0

We need to subtract 30 to get to get to 0

30-30 = 0

Taking out 30

Withdrawing 30

Spending 30

All are ways of indicating taking out 30 dollars

Answer:

On Tuesday, Devon took 30 dollars out of his checking account.

Step-by-step explanation:

Starting with: $50        -        Ending with $0

Monday: took out $20 or in other words -20   50-20=30

Tuesday: undetermined, but since that was his last day, it would correspond with $0 so, he must've took out $30 and then ended up with none in the end.

30-30=0

So, he took 30 dollars out on tuesday.

You would need to DIVIDE by 9

Answer:

x=17

Step-by-step explanation:

divide both sides of the equation by 9

Answer:

51cm^2

Step-by-step explanation:

The formula for the area of a parallelogram is : [tex]base*height[/tex]

To work out the area of a parallelogram you would simply multiply the base of 8.5 by the height of 6, this gives you 51cm^2. This is because the formula for the area of a parallelogram is base multiplied by the height.

1) Multiply 8.5 by 6.

[tex]8.5*6=51cm^2[/tex]

Answer:

− 24 x 3

This is if you multiply the expressions

Answer: 140%

Step-by-step explanation:

STEP 1: FIND THE CHANGE IN # OF PEOPLE:

initial # of people: 144

final # of people: 346

change in # of people = (final - initial)

change in # of people = (346 - 144)

change in # of people = 202

STEP 2: FIND THE % CHANGE

202/144 = x/100

(100)(202/144) = x

100(1.4) = x

140% = x

Answer:

140 %

Step-by-step explanation:

(346-144)/144 * 100

(202/144) * 100

Answer:

g(n) = [tex]\frac{11+5n}{3}[/tex]

Step-by-step explanation:

Given

3m - 5n = 11

Rearrange making m the subject

Add 5n to both sides

3m = 11 + 5n ( divide both sides by 3 )

m = [tex]\frac{11+5n}{3}[/tex] , thus

m = g(n) = [tex]\frac{11+5n}{3}[/tex]

Answer:

y=-3/2x-.5

Step-by-step explanation:

(5,-4) and (1,-2)

Step 1: find slope:

-4-2/5-1=-6/4=-3/2

y=mx+b

y=-3/2x+b

2.: Plug in point

(1,-2)

-2=-3/2*1+b

-2=-3/2+b

-2+3/2=b

b=-.5

Answer:

15

Step-by-step explanation:

-5+20=20-5

15

Answer:

Two intersecting lines are co-planar in the same plane.

Hope this helps!

:)

Answer:

the answer is always

Step-by-step explanation:

I just took the quiz and got it right.

Answer:

56 cm

Step-by-step explanation:

The ratio of the lengths of the pieces is 3:4.

The longer piece is 32 cm.

We set up a proportion to find the length of the smaller piece.

Let the length of the smaller piece be x.

3 is to 4 as x is to 32

3/4 = x/32

4x = 3 * 32

4x = 96

x = 24

The smaller piece is 24 cm.

24 cm + 32 cm = 56 cm

Answer: 56 centimeters long.

Step-by-step explanation:

You can find the other value in a ratio by dividing the value given by its corresponding value in the ratio, then multiplying the quotient by the other value in the ratio.

32 is the longer piece, and 4 is longer than 3.

32 / 4 = 8.

8 * 3 = 24

The shorter piece is 24 centimeters long.

The total length of the coil is 24 + 32, or 56 centimeters long.

Answer: 10y^4

Since it can go 10y^4(3y^4+1)

Step-by-step explanation:

Answer:

10y^4

Step-by-step explanation:

in order to solve you would have to find the prime factors of each term i order to find the GCF.

hope this helped ;)

Answer:

$0.33 per hamburger

Step-by-step explanation:

You know that the team paid $5 for 15 hamburgers, then you need to divide the cost of all the hamburgers, ($5) by the number of hamburgers. 5/15 = 0.33 repeating. This means that they paid $0.33 per hamburger.

Answer:The answer is 80

5, 10, 15, 20, 25, 30, 35,40, 45, 50, 55, 60, 65, 70, 75, 80.

Answer:

3455.75

Step-by-step explanation: