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lesantik [10]
3 years ago
10

What SHOULD happen in an event is called ...

Mathematics
1 answer:
AysviL [449]3 years ago
5 0

Answer:

hypothetical

Step-by-step explanation:

its right

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1.Arsenic-74 is used to locate brain tumors. It has a half-life of 17.5 days. 90 mg wereused in a procedure. Write an equation t
Sophie [7]

1)\text{   }N_t\text{ = 90\lparen}\frac{1}{2})^{\frac{t}{17.5}}

2) 5.625 mg will be left

Explanation:

1) Half-life = 17.5 days

initial amount of Arsenic-74 = 90 mg

To get the equation, we will use the equation of half-life:

\begin{gathered} N_t\text{ = N}_0(\frac{1}{2})^{\frac{t}{t_{\frac{1}{2}}}} \\ where\text{ N}_t\text{ = amount remaining} \\ N_0\text{ = initial amount} \\ t_{\frac{1}{2}\text{ }}\text{ = half-life} \end{gathered}N_t\text{ = 90\lparen}\frac{1}{2})^{\frac{t}{17.5}}

2) we need to find the remaining amount of Arsenic-74 after 70 days

t = 70

\begin{gathered} N_t=\text{ 90\lparen}\frac{1}{2})^{\frac{70}{17.5}} \\ N_t\text{ = 5.625 mg} \end{gathered}

So after 70 days, 5.625 mg will be left

4 0
1 year ago
How much must Arthur earn in the next week?
raketka [301]
Arthur must earn $53 in the next week
5 0
3 years ago
Can someone help me figure out the answer?
olga_2 [115]

Answer:

y = -2x +15

Step-by-step explanation:

The point-slope form of the equation for a line through (h, k) with slope m is ...

... y - k = m(x - h)

For your point (h, k) = (5, 5) and slope m = -2, the equation in point-slope form is ...

... y - 5 = -2(x - 5)

Simplifying, we get

... y - 5 = -2x +10

Adding 5 puts the equation into slope-intercept form, as you want.

... y = -2x +15

8 0
3 years ago
What is the probability of randomly selecting one 9 from a standard deck of 52 cards?
Tpy6a [65]

there are 4 9's in a deck so probability would be 4/52 reduced to 1/13

 does the answer need to be in a different format?

5 0
3 years ago
The area of a circle is 153.86 square meters. What is the diameter of the circle? Use 3.14 for π. show you work.
MaRussiya [10]
The diameter is 49

you take 153.86 and divide it by 3.14
3 0
2 years ago
Read 2 more answers
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