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ivanzaharov [21]
3 years ago
15

Suppose the half-life of a certain radioactive substance is 12 days. Find the time when there will be 20% of the initial substan

ce remaining. Assume you have 1 gram of the original substance.
pls help, it due today
Mathematics
1 answer:
vazorg [7]3 years ago
7 0

Answer: 2.4% I think

12 x 20 / 100 = 2.4%

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200 miles divided by 8​
yulyashka [42]

Answer:

25

200 divided by 8 is 25.

Step-by-step explanation:

6 0
2 years ago
Please help me with this
Fiesta28 [93]

9514 1404 393

Answer:

  91°

Step-by-step explanation:

The similarity statement tells you that angles Q and H are congruent. The measure of angle H is shown as 91°, so that is the measure of angle Q.

  m∠Q = 91°

5 0
3 years ago
The function T(n) is defined below. Which of the following are equal to T(8)? Check all that apply. T(n) = 4n - 5
Klio2033 [76]
T(n)=4n-5\\\\T(8)=4\cdot8-5=32-5=27\\\\T(5)+T(3)=4\cdot5-5+4\cdot3-5=20-5+12-5=22\neqT(8)\\\\T(7)+4=4\cdot7-5+4=28-5+4=27\\\\Answer:\\B.\ 27\\D.\ T(7)+4
3 0
3 years ago
If I have $1,050 dollars, and I want to buy something 6 times for $45 dollars, how much times can I buy it until I run out of mo
joja [24]

Answer:

140

Step-by-step explanation:

here,

You have 1050

now

$1050(45×6)

=140 items

8 0
2 years ago
In a triangle the measure of the first angle is twice the measure of the second angle. the measure of the third angle is 8 degre
Rufina [12.5K]
Let's call the missing angles Q, R, and S. We know that Q = 2R and S = R - 8 and we also know that Q + R + S = 180. So that really just means that              180 = 4R - 8  Add 8 on both sides of the equal sign
188 = 4R So we divide on both sides of the equal sign by 4
47 = R And that means that Q = 2 * 47 So Q = 94 and S = 47 - 8 So S = 39
39 + 94 + 47 = 180
The missing angles are 39 degrees 94 degrees and 47 degrees.

4 0
3 years ago
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