1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
VikaD [51]
3 years ago
6

PLLLLZ I WILL GIVE BRAINIEST ANSWER AND 72 PTS

Mathematics
1 answer:
Paul [167]3 years ago
6 0

Answer:

x ≈ 5 years

Step-by-step explanation:

Given amount = A = 500 mg

Decay rate = r = 10% per year

Remaining amount = L = 295.25 mg

The formula to calculate remaining amount after x years decay =

L = A((100-r)/100)^x

By putting values in this formula, we get

295.25 = 500 ((100-10)/10)^x

295.25 = 500 (0.90)^x    

295.25/500 = 0.90^x

0.5905 = 0.90^x

0.90^x =0.5905

taking log on both sides

ln(0.90^x) =ln(0.5905)

x*ln(0.90) =ln(0.5905)  using property of log

x = ln(0.5905)/ln(0.90)

x = 4.9984

x ≈ 5 years

You might be interested in
What is the gcf of 12 18 26
navik [9.2K]

the greatest common factor is 2

5 0
3 years ago
Read 2 more answers
Solve for x<br> -6x+14&lt; -28 or 9x+15≤−12
Free_Kalibri [48]

- 3 \geqslant x > 6

Step-by-step explanation:

....

8 0
3 years ago
What is 246 : 7 in long division​
Mars2501 [29]

Here we will show you step-by-step with detailed explanation how to calculate 246 divided by 7 using long division.

Before you continue, note that in the problem 246 divided by 7, the numbers are defined as follows:

246 = dividend

7 = divisor

Step 1:

Start by setting it up with the divisor 7 on the left side and the dividend 246 on the right side like this:

7 ⟌ 2 4 6

Step 2:

The divisor (7) goes into the first digit of the dividend (2), 0 time(s). Therefore, put 0 on top:

0

7 ⟌ 2 4 6

Step 3:

Multiply the divisor by the result in the previous step (7 x 0 = 0) and write that answer below the dividend.

0

7 ⟌ 2 4 6

0

Step 4:

Subtract the result in the previous step from the first digit of the dividend (2 - 0 = 2) and write the answer below.

0

7 ⟌ 2 4 6

- 0

2

Step 5:

Move down the 2nd digit of the dividend (4) like this:

0

7 ⟌ 2 4 6

- 0

2 4

Step 6:

The divisor (7) goes into the bottom number (24), 3 time(s). Therefore, put 3 on top:

0 3

7 ⟌ 2 4 6

- 0

2 4

Step 7:

Multiply the divisor by the result in the previous step (7 x 3 = 21) and write that answer at the bottom:

0 3

7 ⟌ 2 4 6

- 0

2 4

2 1

Step 8:

Subtract the result in the previous step from the number written above it. (24 - 21 = 3) and write the answer at the bottom.

0 3

7 ⟌ 2 4 6

- 0

2 4

- 2 1

3

Step 9:

Move down the last digit of the dividend (6) like this:

0 3

7 ⟌ 2 4 6

- 0

2 4

- 2 1

3 6

Step 10:

The divisor (7) goes into the bottom number (36), 5 time(s). Therefore put 5 on top:

0 3 5

7 ⟌ 2 4 6

- 0

2 4

- 2 1

3 6

Step 11:

Multiply the divisor by the result in the previous step (7 x 5 = 35) and write the answer at the bottom:

0 3 5

7 ⟌ 2 4 6

- 0

2 4

- 2 1

3 6

3 5

Step 12:

Subtract the result in the previous step from the number written above it. (36 - 35 = 1) and write the answer at the bottom.

0 3 5

7 ⟌ 2 4 6

- 0

2 4

- 2 1

3 6

- 3 5

1

You are done, because there are no more digits to move down from the dividend.

The answer is the top number and the remainder is the bottom number.

Therefore, the answer to 246 divided by 7 calculated using Long Division is:

35

1 Remainder

Mark as brainlist

5 0
3 years ago
Read 2 more answers
Can somebody help me? Thank you!
DiKsa [7]

Answer:

angel, side, angel

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
What is the solution to the system of equations?​
Veronika [31]

Answer: x = -2, y = 4

Step-by-step explanation:

Where the lines intersect on the graph.

X coordinate is x, Y coordinate is y.

5 0
4 years ago
Other questions:
  • You flip two coins .what is the probability that you flip at least one head
    12·1 answer
  • Can someone plz show me how to do this. Thx
    10·2 answers
  • I bought three pencils costing 18 cents each. how much change did I get from $1​
    11·2 answers
  • How do you write 26.2 as a mixed number in simplest form
    9·2 answers
  • Jennifer hiked on a trail in the desert. The elevations at three points during her hike are as given. −6 m&lt;−1 m&lt;4 m Select
    15·2 answers
  • The number of knots in a particular type of wood can be modeled by a Poisson distribution with an average of 1.4 knots in 10 cub
    7·1 answer
  • Is it true or false?
    14·2 answers
  • John has 333 colored ribbons described below.
    7·2 answers
  • Simplify the following in simplest radical form of sqrt{40}
    6·2 answers
  • I believe X=4, but i could be wrong with the whole thing
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!