Element X is a radioactive isotope such that every 27 years, its mass decreases by half. Given that the initial mass of a sample of Element X is 7900 grams, how much of the element would remain after 12 years, to the nearest whole number?

Answer:

166

Step-by-step explanation:

Answer:

$1.66x100 would be 166 or $166.

Step-by-step explanation:

Since you are multiplying by 100, you could move the decimal point to the right twice which would give you $166, or you could multiply normally.

Answer:

like y⁵×y ?

Step-by-step explanation:

is that what your asking?

Answer:

              [tex]\bold{y=-\frac12x}[/tex]

Step-by-step explanation:

Slope-intercept form:   y = mx + b

The line intersect Y-axis at y=0 so b = 0

The line passses through points (0, 0) and (2, -1), so the slope:

[tex]m=\dfrac{-1-0}{2-0}=-\dfrac12[/tex]

Therefore the equation:

                                        [tex]y=-\frac12x+0\\\\y=-\frac12x[/tex]

Answer is $15,840.00

................

Answer:

The additive inverse of 1/3 is -1/3

Step-by-step explanation:

Since, 1/3+(-1/3) = 0

Answer:

a

Step-by-step explanation:

Answer:

b < 5

Step-by-step explanation:

subtract 2 from each side

Answer:

b < 5

Step-by-step explanation:

b + 2 < 7

    -2    -2

b < 7

Answer:

Slope:

−

3

2

y-intercept:

6

Step-by-step explanation:

(Solving for x on question - 2x + 3y = 32)

2x + 3y = 32

Step 1: Add -3y to both sides.

2x + 3y + −3y = 32 + −3y

2x = −3y + 32

Step 2: Divide both sides by 2.

[tex]\frac{2x}{2}[/tex]  = [tex]\frac{-3y+32}{2}[/tex]

x =  [tex]\frac{-3}{2}[/tex]⁻y + 16                                                                                                                

(Solving for y on question - 2x + 3y = 32)

2x + 3y = 32

Step 1: Add -2x to both sides.

2x + 3y + −2x = 32+ −2x

3y = −2x + 32

Step 2: Divide both sides by 3.

[tex]\frac{3y}{3}[/tex] =  [tex]\frac{-2x+32}{3}[/tex]

y = [tex]\frac{-2}{3}[/tex]x + [tex]\frac{32}{3}[/tex]                                                                                                          

(Solving for x on question - 5x - 4y = -81)

5x − 4y = −81

Step 1: Add 4y to both sides.

5x − 4y + 4y = −81 + 4y

5x = 4y − 81

Step 2: Divide both sides by 5.

[tex]\frac{5x}{5}[/tex] =  [tex]\frac{4y-81}{5}[/tex]

x =  [tex]\frac{4}{5}[/tex]y + [tex]\frac{-81}{5}[/tex]                                                                                                              

(Solving for y on question - 5x - 4y = -81 )

5x − 4y = −81

Step 1: Add -5x to both sides.

5x − 4y + −5x = −81 + −5x

−4y = −5x − 81

Step 2: Divide both sides by -4.

[tex]\frac{-4y}{-4}[/tex] = [tex]\frac{-5x-81}{-4}[/tex]

y =  [tex]\frac{-5}{4}[/tex]x + [tex]\frac{81}{4}[/tex]

Answer:

As you should

Step-by-step explanation:

Answer:

PURRIOD

Step-by-step explanation:

Answer:

(2x+5y)(2x+3y)

=(2x)^2 + [5y+3y]2x + (5y)(3y)

=4x^2 +16xy + 15y^2

Step-by-step explanation:

Answer:

Option C is correct option.

Step-by-step explanation:

We need to select the statement that does not correctly use probability to describe an  event.

Probability

Whenever we need to find probability of something it lies between 0 and 1.

So, if any item has probability greater than 1 then it is incorrectly described.

Now, looking at the options:

A. The probability of a storm tomorrow is 60%.

Here probability is 0.6 (60/100 = 0.6) so it is used correctly

B. The probability of finding a matching pair of socks is 1/3

 Here probability is 0.33 (1/3 = 0.33) so it is used correctly

C. The probability of taking a good class picture is 1.3.

 Here probability is 1.3 but probability can be between 0 and 1. So here it is not used correctly.

D. The probability that the dog will catch the ball is 0.99.​

Here probability is 0.99 so it is used correctly

Therefore Option C is correct option.

Answer:

C. The probability of taking a good class picture is 1.3

Step-by-step explanation:

Hope it helps! :D

Answer:

75

Step-by-step explanation:

Have a great day mark me branly

Answer:

You will save $75 dollars if you buy it.

Step-by-step explanation:

$500 - 0.15 x $500 = $425

$500 - $425 = $75

Hope this helps!

Answer:

Skewed Left :)

Step-by-step explanation:

Correct on Edge 2021

The probability of success (p = 0.8) in each trial remains constant.

The trials are independent. This implies that the outcome from one trial has no effect on the outcome to be obtained from any other trial.

Each trial results in only two possible outcomes, labeled as the success ( Blue ) and failure ( Not blue ).

The experiment is performed a fixed number of times (n=12).

The X is a binomial random variable is 0.1329.

Given that,

An online spinner has two colored regions--blue and yellow.

According to the website, the probability that the spinner lands in the blue region on any spin is 0.80.

Assume for now that this claim is correct. Suppose we spin the spinner 12 times.

We have to determine,

X is a binomial random variable.​

According to the question,

Therefore,

Number of trials: n = 12

Probability of success: p = 0.8

Let, x be the number of successes ( Blue ) in 12 trials.

The probability function of X:

[tex]P(X=x) = \ ^nC_x \times P^x \times (1-p)^{n-x}[/tex]

To find P(X = 8). Interpret this value in context.

At x = 8

[tex]P(X=8) = \ ^{12}C_2 \times (0.8)^{8} \times (1-0.08)^{12-8}\\\\P(X=8) = \dfrac{12!}{10!\ 2!} \times (0.8)^8\times (0.92)^4\\\\P(X=8) = 495 \times (0.167) \times (0.0016)\\\\P(X=8) = 0.1329[/tex]

Hence, The X is a binomial random variable is 0.1329.

To know more about Binomial click the link given below.

https://brainly.com/question/20910900

Step-by-step explanation:

Since PT = 2PM and AR = 2AD,

The midsegment MD must be the average of PA and TR:

Therefore we have

2(20x + 4) = 10 + (34x + 16)

=> 40x + 8 = 34x + 26

=> 6x = 18

=> x = 3

Hence length of MD

= 40(3) + 8 = 128.

Answer:

10+11g

Step-by-step explanation:

Answer:

The area of the wall is 435 square foot.

Step-by-step explanation:

a) Data and Calculations:

One side of the wall (height) = 14 1/2 foot = 14.5 foot

The second side of the wall (length) = 30 foot

The area of the wall = height * length

= 14.5 * 30

= 435 square foot

b) The area of a wall is usually obtained by Height x Length.  It uses the same standard formula of (Length) x (Width) for calculating the area of any surface, only that this time, the width changes to height because of the nature of the wall.

Answer:

i think its 115.6 ft

Step-by-step explanation:

Answer:

that is 188888888888888888

Answer:

3

Step-by-step explanation:

48/16=3

Answer:3 people in each car

Step-by-step explanation:

43/16=3

Answer:

Ron multiplied with the wrong number. He should have multiplied with 3/2 (the reciprocal of 2/3), which would have made the 2/3 a 1, thus isolating the r.

r = 18

Step-by-step explanation:

(2/3)(3/2)r = 12

r = 12(3/2)

r = 18