The half life of a radioactive substance is 200 years. There are 8,000 grams of the substance initially. How many grams of the substance are left after 300 years?

PLEASE HELP ME!!! thank you so so so so much!!!! *will of course give brainliest*

The solution of the given equation are;  X = -2 - 2√3 or x = -2 + 2 √3

An equation is an expression that shows the relationship between two or more numbers and variables.

We have been given an equation as 3/x-4 = x-5/x

Therefore, 3/x-4 = x-5/x

3 - 4x /x = x² - 5 / x

Cancel out the denominator;

3 - 4x =  x² - 5

x² - 5 - 3 + 4x = 0

x² - 8 + 4x = 0

x² + 4x - 8 = 0

For the value of x;

x = 4 + √16 + 32 / 2

x =  -2 + 2√3

OR

x = 4 - √16 + 32 / 2

x = -2 - 2√3

Hence, The solution of the given equation are;  X = -2 - 2√3 or x = -2 + 2 √3

Learn more about equations here;

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Answer:

slope = differemce in "y" / difference in "x"

slope = (8 --6) / (2 -0)

slope = 7

Step-by-step explanation:

Answer:

69

Step-by-step explanation:

Multiply 6 by 9

54

Plug this value back into the equation

54 + 6 + 9

Add 54 to 6

60

Now add 9 to 60

69

Hope this helps :)

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Answer:

4 1/8 square feet

Step-by-step explanation:

Area= l*b assuming that it's a rectangle or a square

2 3/4* 1 1/2= to do this we need to convert these mixed fractions to improper fractions (How to convert-Multiply the whole number part by the fraction's denominator. Add that to the numerator. Then write the result on top of the denominator.)

so, 2 3/4 converted will be- 11/4

& 1 1/2 converted will be- 3/2

11/4*3/2=33/8

Now we need to convert this into a mixed fraction again, coz the question was given in that form. (How to convert-Multiply the whole number part by the fraction's denominator. Add that to the numerator Then write the result on top of the denominator.)- so,

The ans would be 4 1/8 sqft

Answer:

+2

Step-by-step explanation:

Answer:

its +2

Step-by-step explanation:

PLZ THANK FIVE STARE AND GIVE BRAINLIEST.

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Work Shown:

150% = 1.5 after moving the decimal 2 spots to the left

Multiply this with each of the dimensions given

4*1.5 = 6

9*1.5 = 13.5

The pool is 6 feet by 13.5 feet

[tex]average = \frac{sum \: \: of \: \:all \: \: obeservations}{no. \: \: of \: observaions} [/tex]

[tex] = \frac{1205 + 1450 + 1530 + 1655 + 1610 + 1710}{6} [/tex]

[tex] = \frac{9160}{6} [/tex]

[tex] = 1526.66[/tex]

___________________________________________

1526.66 is the average of his sales for this period.

Answer:

[tex]\dfrac{1}3[/tex]

Step-by-step explanation:

Given that:

Part of pan of brownies eaten by Rodriguez family = [tex]\frac{1}{3}[/tex]

One part of the remaining pan of brownies will be taken to the block party.

And the other part of the remaining pan of brownies will be given to the co-workers.

To find:

How much of the whole pan of brownies will be in each plate?

Solution:

First of all, let us find the remaining part of brownies after the family ate [tex]\frac{1}{3}[/tex] part of the pan.

Remaining = [tex]1-\frac{1}{3}=\frac{2}{3}[/tex]

Now, from the remaining pan of brownies, they are divided in 2 halves.

These part will be equal to:

[tex]\dfrac{\frac{2}{3}}{2} = \bold{\dfrac{1}{3}}[/tex]

Therefore, the answer is:

[tex]\dfrac{1}3[/tex]

Answer:

Answer: Brad has been in the team for 8 years. Trust i got it right on the test

Step-by-step explanation:

Answer: 5 under each splat

Step-by-step explanation:

Count how many circles there are. Which is 7 subtract from 22 and u get 15. 15 divided by 3 is 5

Answer:

x ≈ 4.3

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Trigonometry

Step-by-step explanation:

Step 1: Identify Variables

Angle = 35°

Opposite Leg = 3

Adjacent Leg = x

Step 2: Solve for x

Answer:

the answer is (21, 6); 21 two-point shots and 6 three-point shots

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

i did the test

Answer:

0

Step-by-step explanation:

The value of constant 'k' will be [tex]\frac{1}{3}[/tex].

Given equation in the question is,

[tex]\frac{1}{3}\times (x-k)=kx[/tex]

Further solve the expression for the solution of the equation.

[tex]\frac{3}{3}\times (x-k)=3kx[/tex]

[tex](x-k)=3kx[/tex]

[tex]x-3kx-k=3kx-3kx[/tex]

[tex]x-3kx-k=0[/tex]

[tex]x(1-3k)=k[/tex]

[tex]\frac{x(1-3k)}{(1-3k)}=\frac{3kx}{1-3k}[/tex]

[tex]x=\frac{3kx}{(1-3k)}[/tex]

Since, equation has no value, denominator will be zero.

[tex]1-3k=0[/tex]

[tex]1=3k[/tex]

[tex]k=\frac{1}{3}[/tex]

     Therefore, Option (D) will be the correct option.

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Answer:

4y^2 - 10y + 23

Step-by-step explanation:

Answer:

Step-by-step explanation:

(22 - 7y + 6) - (-4y² + 3y + 5) = 22 + -7y + 6 + 4y² - 3y  - 5

                                             = 22 + 6 - 5 - 7y - 3y  + 4y²

                                            = 23 - 10y + 4y²

Answer:

True

Bones seperated from a joint

Step-by-step explanation:

Answer:

5 is bones separated from the joint

Step-by-step explanation:

Answer:

30 bad apples.

Step-by-step explanation:

1% is equivalent to two bad apples because 200 is the 100%.

According to this statement, multiply 2 x 15.

30 bad apples

Answer:

Yes, of 1 1/2

Step-by-step explanation:

Answer:

1.5

Step-by-step explanation:

8 x what  equals 12

Divide 12 by 8 and that gives you 1.5  

now try 6 x 1.5 = 9

Hope this Helps!!!

Answer:-54 i think or its 54 over x -3

Step-by-step explanation:

hope this helped you

Answer:

1/3 of chance

Answer:

A) Contraction

Step-by-step explanation:

Answer:

The answer to this question is Contraction.

Answer:

It's the top answer or A.

Step-by-step explanation:

Because if you have 6 avocados for 7.50 just divide without including the decimal point. 750 divided by 6 is 125

include the decimal point in between 1 and 2

boom 1.25

Answer:

y = -1/4x + 4

Step-by-step explanation:

y2-y1/x2-x1

Answer:

I got -3/7

Step-by-step explanation:

Answer:

a(5)=-48

Step-by-step explanation:

I think u r confused

this sequence is geometric not arithmetic

HOw we know that ??

when we get a common difference  that must Be equal  

d=6+3=9  not equal to  d=-12-6=-18

So it is not arithmetic

but when we get the common ratio that also must be equal

r=6/-3=-12/6=24/-12=-2   equal

So it is geometric

By using this equation:

a(n)=a*r^(n-1)

and we have a=-3 , r=-2

Then       a(n)=-3*(-2)^(n-1)

To get the next term:

a(5)=-3*(-2)^(5-1)

a(5)=-3*(-2)^(4)

a(5)=-3*16=-48

I really hope this helps <3

Answer:

F(p) = 500 + 0.5p

Step-by-step explanation:

Given that :

Bonus point on first purchase = 500

Number of points earned for every 2 dollar spent = 1

Points earned as a function of amount spent :

Bonus point + points earned per dollar

Number of points earned per dollar = 1 / 2

Let p = amount spent

F(p) = function representing the points earned

Hence,

F(p) = 500 + 0.5p

Answer:

A.

Step-by-step explanation:

Answer:

-5 (11t - 30)

Step-by-step explanation:

Rewrite 150 as 5 * 30

Rewrite 55 as 5 * 11

-5 * 11t + 5 * 30

Finally, factor out the common term, which in this case is -5.

The finalized answer to this problem is -5 (11t - 30).

I hope this helps you out with your question.