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
Sunny_sXe [5.5K]
3 years ago
6

After the release of radioactive material into the atmosphere from a nuclear power plant at Chernobyl (Ukraine) in 1986, the hay

in Austria was contaminated by iodine 131 (half-life 8 days). If it is safe to feed the hay to cows when 10% of the iodine 131 remains, how long did the farmers need to wait to use this hay?
Mathematics
1 answer:
a_sh-v [17]3 years ago
6 0

Answer:

$t=26.47$

i took test and got it right

You might be interested in
Can the following three measures form a triangle? 5,17 and 9
navik [9.2K]

Answer:

No

Step-by-step explanation:

Because 17 is greater than 5 + 9.

To form a triangle, no side can be equal or greater than the sum of the other 2 sides.

4 0
3 years ago
Solve - pv + 40 &lt; 65 for v<br> solve 7w - 3r = 15 for r
Katarina [22]

Answer:

v > -25/p

r = -5 +7/3 w

Step-by-step explanation:

- pv + 40 < 65

Subtract 40 from each side

- pv + 40-40 < 65-40

-pv < 25

Divide each side by -p  (remember to flip the inequality since we are dividing by a negative)

-pv/-p > 25/-p

v > -25/p


7w - 3r = 15

Subtract 7w from each side

7w-7w - 3r = 15-7w

-3r = 15-7w

Divide by -3

-3r/-3 = (15-7w)/-3

r = -5 +7/3 w

8 0
4 years ago
3x/5=30 solve the equation
Bess [88]

Answer:

Step-by-step explanation:

To solve equations like this you need to to get x by itself.

So, Let's multiply both sides by 5 to get rid of 5.

3x/5 *5 = 30 * 5

= 3x = 150

Now we divide both sides by 3 to get x by itself,

3x/3 = 150/3

x = 50

4 0
3 years ago
Read 2 more answers
Eleven less than three times a number
Ber [7]
The answer to this question could be 44
8 0
3 years ago
Read 2 more answers
PLEASE HELP ME <br><br> i’ll mark brainliest if you’re correct
AlladinOne [14]

Answer:

13

Step-by-step explanation:

Write an equation setting the lengths equal to each other.

5x + 3 = 2x + 9

Move the variable (x) to one side. I'm going to subtract 2x from both sides.

5x - 2x + 3 = 2x - 2x + 9

3x + 3 = 9

Subtract 3 from both sides

3x +3 - 3 = 9 - 3

3x = 6

Divide both sides by 3

3x/3 = 6/3

x = 2

Now use 2x + 9 to find the length of EG by substituting 2 in for x.

2x + 9

2(2) + 9

4 + 9

13

You could also use 5x + 3 to find the length of EG by substituting 2 in for x.

5 0
2 years ago
Read 2 more answers
Other questions:
  • The Wall Street Journal reports that 33% of taxpayers with adjusted gross incomes between $30,000 and $60,000 itemized deduction
    6·1 answer
  • I am so lost. Please help.
    10·1 answer
  • Simply -3(8 – 4x) +6
    6·2 answers
  • Given that OT =5, XT=12, and OX= 13 is XY tangent to circle O at T? Explain.
    13·1 answer
  • Describe how you can check to see if two ratios are proportional. Use the following ratios to explain your thinking: 2/3 12/18
    11·1 answer
  • (URGENT) need answer for today​
    9·2 answers
  • If y varies directly as x, and y is 16 when x is 4, when y= 24 what is the value of x?
    14·1 answer
  • A car manufacturer announced that next year the price of a certain model car would increase by 5.5 %. This year the price is ​$1
    6·1 answer
  • Can someone answer this please
    8·1 answer
  • How many digits are there in the smallest sequence of repeating digits in the decimal equivalent of?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!