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victus00 [196]
3 years ago
6

Element X is a radioactive isotope such that every 91 years, its mass decreases by half. Given that the initial mass of a sample

of Element X is 80 grams, how long would it be until the mass of the sample reached 68 grams, to the nearest tenth of a year?
Mathematics
1 answer:
vaieri [72.5K]3 years ago
7 0

Answer:

21.3

Step-by-step explanation:

Delta math answer.

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A box is filled with candies in different colors. There are 40 white candies, 24 green ones, 24 yellow ones, 12 red ones, and 20
AleksAgata [21]

Answer:

3/10 or 30% chance red and green being pulled

Step-by-step explanation:

to get your fraction you do your amount wanted pulled (red and green) over the amount total (all of the colors)

24 + 12 = 36

40 + 24 + 12 + 24 + 20 = 120

36/120 now reduce 6

6/20 reduce by 2

3/10

5 0
3 years ago
A running back is having a great day on the football field. It’s only the third quarter, and he’s already rushed for 203 yards.
Naddik [55]

Answer:

He needs to gain more than 26 yards in order to break his record

Step-by-step explanation:

Let y stand for the number of yards he’ll have to gain. The sum of y plus the number of yards he already has (203) must be greater than 229 in order for him to break the record.  

203 + y > 229                           Set up the inequality.

203 − 203 + y > 229 − 203       Subtract 203 from both sides of the inequality.

y > 26

8 0
3 years ago
Jame uses the distributive property to find how many cans of paint are in the art supply closet. There are 5 boxes in the closet
Svetach [21]
It's 70

5(14)

5 boxes, each has 14 cans
4 0
3 years ago
What is the true solution to 3 in 2 + in 8 = 2 in (4x)
11Alexandr11 [23.1K]
The first step for solving this equation is to determine the defined range.
3㏑(2) + ㏑(8) = 2㏑(4x), x > 0
Write the number 8 in exponential form.
3㏑(2) + ㏑(2³) = 2㏑(4x)
Using ㏑(a^{x}) = x × ㏑(a),, transform the expression.
3㏑(2) + 3㏑(2) = 2㏑(4x)
Now collect the like terms on the left side of the equation.
6㏑(2) = 2㏑(4x)
Switch the sides of the equation.
2㏑(4x) = 6㏑(2)
Using x × ㏑(a) = ㏑(a^{x}),, transform the expression on the left side of the equation.
㏑((4x)²) = 6㏑(2)
Using x × ㏑(a) = ㏑(a^{x}),, transform the expression on the right side of the equation.
㏑((4x)²) = ㏑(2^{6})
Since the bases of the logarithms are the same,, you need to set the arguments equal.
(4x)² = 2^{6}
Take the square root of both sides of the equation and remember to use both the positive and negative roots.
4x = +/- 8
Now separate the equation into 2 possible cases.
4x = 8
4x = -8
Solve the top equation for x.
x = 2
Solve the bottom equation for x.
x = 2
         , x > 0
x = -2
Lastly,, check if the solution is in the defined range to find your final answer.
x = 2
This means that the correct answer to your question is x = 2.
Let me know if you have any further questions
:)
5 0
3 years ago
Read 2 more answers
Write an equation of the line below.
Bogdan [553]

Answer:

y= 3/5x

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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