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3 years ago

WILL GIVE BRAINIEST PLEASE ONLY ANSWER WITH AN ANSWER

Mathematics

2 answers:

lisabon 2012 [21]3 years ago

7 0

Answer:

Step-by-step explanation:

Temka [501]3 years ago

6 0

Answer:

In response to public health conditions, Yale Library will close all library buildings ... Please explore these volumes on the Cushing/Whitney Medical Library site on ... when, how, and where they need to make their research results accessible. ... Please prioritize requests that are the most urgent for your courses, research, ...

Step-by-step explanation:

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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

A company requires a password to access a data storage vault. The password must be 4 characters long and may

lisov135 [29]

Answer:

There are 36 possibilities per character (26 lower case letters + 10 numbers), so the total number of permutations are 36^4 = 1,679,616

Step-by-step explanation:

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3 years ago

I'll mark as Brainliest, Please answer ASAP, Ihave MCAS tomorrow. How could this be true?? Please Explain.

Vaselesa [24]

Answer:

See below

Step-by-step explanation:

The number of loaves of bread remaining can only go as low as ZERO (you can't have negative loaves) ...and can only go as high as when h = 0

so 0 = 42-3.5 h

3.5 h = 42

h = 12 and min is h = 0 ( when there are 42 loaves to start)

So:

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2 years ago

What is the surface area of the regular pyramid given below?

zheka24 [161]

I say C is the answer

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4 years ago

There is no school 4 the rest of the week 4 me STOP ASKING ALL THEM QUESTIONS

Leviafan [203]

Answer: lol why would you ask a question if it is not about school homework

Step-by-step explanation:

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3 years ago

Read 2 more answers