The chart shows rate of decay.

Which value is being measured in the columns labeled "Fraction remaining” and "Percentage remaining”?

years of decay
quantity of energy
number of stable atoms
amount of material that has not decayed

Answer: 35 chocolates were bought and 52 gums were bought.

Step-by-step explanation:

c + g = 87    where c is the number of chocolate and g is the number og gums

1.50c + 0.50g = 78.50    solve both equations by elimination.

-1.50c - 1.50g =  -130.5

1.50   + 0.50g = 78.50

           -1g =  -52

             g= 52

1.50c + 0.50(52) = 78.50

 1.50c + 26 = 78.50

             -26     -26

1.50c = 52.5

c = 35  

Complete Question

Liz flips a coin 40 times. The coin lands heads up 28 times and tails up 12 times. Complete each  statement ​

(a)The theoretical probability of the coin landing heads up is___

(b)The experimental probability of the coin landing heads up is___

(c)The theoretical probability of the coin landing tails up is___

(b)The experimental probability of the coin landing tails up is___

(Type an integer or decimal)

Answer:

(a)0.5

(b)0.7

(c)0.5

(d)0.3

Step-by-step explanation:

When a coin is tossed, there are two outcomes: Heads or Tails

(a)Theoretical Probability of the Coin landing Heads up =1/2=0.5

(b)In the experiment, out of a total of 40 trials, the coin lands heads up 28 times.

Experimental Probability of the Coin landing Heads up =28/40=0.7

(c)Theoretical Probability of the Coin landing Tails up =1/2=0.5

(d)In the experiment, out of a total of 40 trials, the coin lands tails up 12 times.

Experimental Probability of the Coin landing Tails up =12/40=0.3

Answer: 22 is 78% of 28

Step-by-step explanation:

22÷28×100=78

78 is the percentage

Answer:

28. 21 or 28.2 or 28

Step-by-step explanation:

Since 22 is equal to 78% percent, then x is equal to 100%

78% = 22

100% = x

Cross múltiply

100(22) = 78x

2200 = 78x

÷ 78. ÷78

28.205 = x

Depending on what your rounding off to, nearest tenth, hundreths, or whole number

tenth = 28.2

whole number= 28

hundreth= 28. 21

Answer:

254.469 inches^3

Step-by-step explanation:

v=(pi)(r)^2(h)

pi(3)^2(9)

pi(9)(9)

pi(81)

254.469

Answer:

324 m^2

Step-by-step explanation:

since it is a square, each side is 18 meters. to find the area, you multiply the length by the width. the answer is 324 m^2

Answer:

60 pennies

Step-by-step explanation:

Answer:

60 pennies

Step-by-step explanation:

Answer:

<FBE

Step-by-step explanation:

supplementary just mean 180

Answer:

∠CBG or ∠FBG

Step-by-step explanation:

Supplementary angles add up to 180°.

Answer:

36

Step-by-step explanation:

bc 11*11=2*2=4      

22*22=4*4=16

33*33=6*6=36

u add 1 and 1 together

then u add 2 and 2 together and then u add the 3 and 3 together to get 2, 4 and 6

Answer:

The answer is 36.

Step-by-step explanation:

This is a brain-solving question :

(1+1)×(1+1)

= 2×2

= 4

(2+2) × (2+2)

= 4×4

= 16

(3+3) × (3+3)

= 6×6

= 36

Answer:

⅞ pound

Step-by-step explanation:

You received 1/4 pound of candy from your grandmother.

You received 1/2 pound of candy from your sister.

You received 1/8 pound of candy from your best friend.

The total amount of candy you received is given as the sum of all the candy that he received from your grandmother sister and best friend.

The total amount of candy is therefore:

¼ + ½ + ⅛ = ⅞ pound

You received ⅞ pound of candy in total.

Answer:

x = 12

Step-by-step explanation:

2x+3=x+15   (subtract x from both sides)

2x + 3 - x = x + 15 - x

x + 3  = 15 (subtract 3 from both sides)

x + 3 - 3 = 15 - 3

x = 15-3

x = 12

Answer:

Bianca would be able to afford her dream car conveniently when she turns 16.

Step-by-step explanation:

Bianca was 5 years and wish to project her savings for the next 11 years.

On her 5th birthday, she saves $100

Her dad promises to double her money yearly with respect to a condition. So that;

On her 6th birthday, she would save $ 200

On her 7th birthday, she would save $400

On her 8th birthday, she would save $800

On her 9th birthday, she would save $1600

On her 10th birthday, she would save $ 3200

On her 11th birthday, she would save $ 6400

On her 12th birthday, she would save $12800

On her 13th birthday, she would save $25600

On her 14th birthday, she would save $51200

On her 15th birthday, she would save $102400

On her 16th birthday, she would save $204800

When she turns 16, she would have a total sum of $409500.

Therefore, Bianca would be able to afford her dream car conveniently when she turns 16.

Answer:

18.75 cubic yards

Step-by-step explanation:

Multiply the length width and height by each other.

50 x 1.5 x 0.25 = 18.75

Answer:

18.75 yards³

Step-by-step explanation:

To solve this, we can solve for the volume of the rectangular prism by using the formula: [tex]V= l*w*h[/tex]

We can plug in the values, giving us:

V= 50×1.5×0.25= 18.75 yards³

Answer:

(i think it is for q6 so) $6

Step-by-step explanation:

4.50÷3=1.50 (that's for 1 pound of fudge)

1.50×4=6

Answer: 29.0

Step-by-step explanation:

The volume of a pyramid is equal to l*w*h/ 3  and we know that the length times the width is the same as the base.

so we will multiply 8.7 * 10= 87 /3=  29

Volume = 87 m³

You need to multiply the area and the height to find the volume. If you have the length, width, and height, then you need to multiply and 3 and divide it by 3. Hope I helped :)

Answer:

7.74 cm^2

Step-by-step explanation:

The  length of the side of the square is 3+3 = 6

The area of the square is

A =s^2 = 6^2 = 36

The area of the circle is

A = pi r^2  where the radius is 3

(3.14) 3^2 =28.26

Subtract the area of the circle from the area of the square to get the shaded area

36-28.26 = 7.74 cm^2

Answer:2(xy-7)= -20

Step-by-step explanation:

Plug in -1 for x and 3 for 3, as the question says that x and y represent those values.

2(xy-7) = ?

2((-1)(3) - 7) = ?

2(-3-7)=?

2(-10)

-20

2(xy - 7) = -20

The expresssion 2(xy - 7) = -20 , when x = -1 & y = 3

In mathematics, if two or more numbers or variables present with one or more mathematical operations, then the statement is called expression.

Example : 4x-3y+4, where x,y are variables, 3 & 4 are numbers and they are operated with addition and subtraction, so this is an expression.

Here, in the problem, x = -1 & y = 3

The given expression is 2(xy - 7) .....(1)

Now, we have to put the values of x & y in (1),

So, 2(xy - 7)

  = 2{(-1)(3)-7}

  = 2{-3-7}

  = 2×(-10)

  = -20

So, the value of the expression is -20

Learn more about expression here :

https://brainly.com/question/723406

#SPJ2

Answer:

The slope is undefined

Step-by-step explanation:

When graphed, the two points form a vertical line, since we can't divide the slope by zero thw slope is considered as undefined

y = 1/2 x -3

Explanation: the y-intercept is where it crosses the y axis so the y-intercept is -3

Answer:

C

Step-by-step explanation:

A quadratic function can be defined as a function where the highest degree or exponent is 2. Since option B has a zero in front of the x squared, it is not a quadratic function because 0 times anything is zero. Therefore, the only other option with an exponent of 2 is C.

Hope this helped! :D

Answer:

12 inches

Step-by-step explanation:

I just took the unit test review on edge

Since the minor arc AB measures 9π inches, the length of the radius of circle C is equal to: B. 12 inches.

Given the following data:

Mathematically, the length of an arc formed by a circle is calculated by using this formula:

Arc length = rθ

Where:

Substituting the given parameters into the formula, we have:

9π = r × 3π/4

36π = 3πr

36 = 3r

r = 36/3

Radius, r = 12 inches.

Read more on arc length here: https://brainly.com/question/20594692

#SPJ2

Answer:

You can substitute the x value of coordinate (x,y) in the equation. If the outcome = the y value in the coordinate (x,y), then you have determined it to be on the system of linear equations.

Step-by-step explanation:

Point P has a coordinates: ( Px , Py ).

You can choose which value is easy to substitute. Eighter start with the Py or you could start with the Px. It could save you time if you pick the right one for the job.

If you want to verify if any point is valid in any (linear) equation(s), you can:

a) substitute the x value of coordinate (x,y) in the equation, and if the outcome has the same value as y in the coordinate (x,y), then that point is a valid solution of the (linear) equation.

b) substitute the y value of coordinate (x,y) in the equation, and if the outcome has the same value as x in the coordinate (x,y), then that point is a valid solution of the (linear) equation.

Answer:

You can substitute the x value into the equation if the answer for y is the same for the y coordinate you will have your answer.

Step-by-step explanation:

Answer:

-5, -4, -1.5, (-5/4) -1.25, 0

Step-by-step explanation:

The higher the negative the lower the number (least).

~Anna

Need help? Contact me for tutoring!

Answer:

P=8h

Step-by-step explanation:

P is the total amount of dollars that Keith will make, while h is the number of hours he will work for. If you multiply the number of hours he works for and how much he makes in an hour which is 8. You will get the total amount.

Answer:

The length of the corresponding base is 6 ft.

Step-by-step explanation:

A = bh            Use this equation to find the length of the base

12 = 2b           Divide both sides by 2 to get b by itself

6 = b

If this answer is correct, please make me Brainliest!

Answer:

6

Step-by-step explanation:

did lesson

Answer: 1. V≈603.19

2. V≈103.67

3. V≈513.13

Step-by-step explanation: i only know those sorry :(

Answer:

[tex]2( \frac{1}{2} \times 4 \times 6 ) + 2( 5 \times 10 ) + ( 6 \times 10 )[/tex]

[tex]= {184cm}^{2}[/tex]

Answer:

3/12 or 1/4

Step-by-step explanation:

To find what is between, we have to use the formula:

x + y= z

z/2 = midpoint!

So, we can do that with this number.

1/6 + 2/6 = 3/6. We could simplify it, but let’s keep it at 3/6

3/6 divided by 2 = 3/6 · 1/2 = 3/12

So, the midpoint would be 3/12.

c=36+g

c:g:s=5:2:1

The ratio gives us two equations so that's three equations in three unknowns.  Actually we're after the total t; let's put that in to solve for directly.

c:g:s:t = 5 : 2 : 1 : 5+2+1

We turn the ratio to fraction equations.  s has the one; let's write everything in terms of s.

c/s = 5/1,  g/s = 2/1, t/s = 8/1

Clearing the fractions,

c = 5s, g = 2s, t = 8s

Our other equation is

c = 36 + g

Substituting in for c and g,

5s = 36 + 2s

Solving,

3s = 36

s = 12

That's right; let's just get the total t.

t = 8s = 72

Answer: 72

Answer:

-2/3

Step-by-step explanation:

Answer:

(-3-5)/(2-(-1))=-8/3

Step-by-step explanation: