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3 years ago

You have 896 grams of a radioactive

Mathematics

2 answers:

Margarita [4]3 years ago

7 0

Every 56 seconds, the radioactive substance is divided in half.

224 / 56 = 4

We need to cut the substance in half 4 times.

896 / 2 = 448

448 / 2 = 224

224 / 2 = 112

112 / 2 = 56

After 224 seconds, there will be 56 grams of the radioactive substance left over

lisov135 [29]3 years ago

6 0

Answer:

56 grams

Step-by-step explanation:

To get how much a HALF-life is, divide the amount by two getting one half of the original amount. That represents on half-life. so 224= 56 x 4

remember the half-life is fifty-six, so there would be 4 half-lives within 224 seconds. Divide 896 by 2 (448) then again divide by 2 (224) divide by 2 again (112) and again divide by 2 and you would get 56 grams.

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in a candy store a $5,00 jar of candy is labled 50% off .what is the idscoutn?what si the sales price of the jar of candy?

lisov135 [29]

The discount is $2.50, the new price would be $2.50. Unless you factor in sales tax.

5 0

3 years ago

The computer store pays its employees $150 per day plus a commission of 15% of their sales. Teagan wants to make at least $450 t

Savatey [412]

The equation 0.15 x + 150 ≥ 450 will help Teagan determine how much he has to sell today ⇒ A

Step-by-step explanation:

The given is:

The computer store pays its employees $150 per day plus a commission of 15% of their sales
Teagan wants to make at least $450 today

We need to find which equation will help Teagan to determine how much he has to sell today

Assume that he has to sell by $x today

∵ The store pays $150 per day plus a commission of 15%

of their sales

∵ Teagan's total sales = x

- Multiply 15% by x, then add the product by 150

∴ Teagan makes = 15% × x + 150

∵ 15% × x = $\frac{15}{100}$ × x = 0.15 x

∴ Teagan makes = 0.15 x + 150

∵ Teagan wants to make at least $450 today

- At least means ≥

∴ Teagan makes ≥ 450

- Substitute Teagan makes by 0.15 x + 150

∴ 0.15 x + 150 ≥ 450

The equation 0.15 x + 150 ≥ 450 will help Teagan determine how much he has to sell today

Learn more:

You can learn more about the linear inequality in brainly.com/question/6703816

#LearnwithBrainly

6 0

3 years ago

Read 2 more answers

Which of the following coordinate points have a y-value of 6? Select all that apply.

just olya [345]

Answer

A, C, and D

Step-by-step explanation:

You are trying to find the y value in (x,y) form. Therefore, it has to be A, C, and D because they all have a 6 in the y value.

3 0

3 years ago

Which graph represent the solution set of y=x^2+4x+3 and y=2x+6

Mamont248 [21]

Answer:

solution set are

$(-3,0)$

$(1,8)$

Step-by-step explanation:

we are given system of equation as

$y=x^2+4x+3$

$y=2x+6$

For finding solution set , we can draw graph of both equations

and then we can find intersection point

the intersection point will be our solution set

we get graph as

So, solution set are

$(-3,0)$

$(1,8)$

4 0

3 years ago

Drag each equation to show if it could be a correct first step to solving the equation 3(x+8)=42.

jeyben [28]

Answer:

3*x + 3*8 = 42 simplified as 3x + 24 = 42

Step-by-step explanation:

The correct first step in solving the equation is to apply the distributive property. Order of operations states to perform operations in this order, PEMDAS, left to right. Some operations can be applied at the same time left to right through the equation such as multiplication and division as well as addition and subtraction. Since 3 is being multiplied into parenthesis, this needs to be applied first using the distributive property.

3(x+8)=42

3*x + 3*8 = 42

3x + 24 = 42

You can continue to solve using inverse operations.

3x = 18

x = 6

8 0

3 years ago