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Valentin [98]
3 years ago
12

Does anybody know this

Mathematics
1 answer:
Dmitrij [34]3 years ago
6 0

Step-by-step explanation:

The equation used to determine the amount of radioactive material left is

A = A_0(2)^{-t/HL}

We are have the following given quantities:

t = 30 seconds

A_0 = 50 grams

HL = 6 seconds

Plugging these into our equation we get

A = (50\:\text{grams})(2)^{-(30s/6s)}

\:\:\:\:= (50\:\text{grams})(0.03125)

\:\:\:\:= 1.56\:\text{grams}

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The function () = 3 − 4 has a range of {-7, -1, 0, 5, 11, 20}.<br> What is the domain?
padilas [110]

Question: The function f(x) = 3x-4 has a range of \{-7, -1, 0, 5, 11, 20\}.

What is the domain?

Domain: \{-1, 1,\frac{4}{3}  , 3, 5, 8\}

Step-by-step explanation:

Domain is the input, and range is the output. In other words, the domain is the x value, and the range is the f(x) (the whole value, output). So we will solve each one step by step, all with the same solution. To reiterate, what is done for -7, for instance, will be done for every other range.

Start with -7. Remember, solve this accordingly.

Replace the f(x) with the range

f(x) = 3x - 4\\\\=-7 = 3x - 4

Solve

-7 + 4 = -3

<em>(When adding negative a to a positive, it results in a negative.)</em>

\frac{-3}{3} = -1

That's how you solve it.

4 0
3 years ago
PLEASE ANSWER ASAP! The difference between two-thirds of a number and 4 is -92.
sleet_krkn [62]

Answer:

Step-by-step explanation:

2/3 x - 4 = - 92

add 4 to both sides

2/3 x = - 88

multiply both sides by 3

2 x = - 264

divide both sides by 2

this is ur answer

Good luck

Hope this helps!

5 0
3 years ago
Read 2 more answers
How does the graph of g(x)=1/x-5 +2 compare to the graph of the parent function f(x)=1/x?
guapka [62]
The second answer from the top is correct. The minus 5 means to move 5 to the right and the plus 2 means to move the graph up 2 units. Hope this helps!
6 0
4 years ago
Read 2 more answers
It is known that 10% of the calculators shipped from a particular factory are defective. In a random sample of ten calculators,
umka2103 [35]

Answer:

0.7361

Step-by-step explanation:

In this question we have

number to be 10

Then we have a probability of 10% = 0.10

We have q = 1-p

= 1-0.10 = 0.90

Then the probability of not more than 1 being defective:

P(x=0) + p(x= 1)

(10C0 x 0.1⁰ x 0.9^10-0)+(10C1 x 0.1¹ x 0.9^10-1)

= 1 x1 x0.3487 + 10 x 0.1 x 0.3874

= 0.3487 + 0.3874

= 0.7361

This is the the required probability and this answers the question.

probability = 10 percent = 0.1

q= 1- 10percent = 90% = 0.9

n = 4

To get the required probabiltiy for this question is

P(not greater than one is defective )=P(x=0)+P(x=1)

= 4C0x(0.1)⁰x(0.9)⁴+4C1x(0.1)¹x(0.9)³

= 0.9477

The required probability is 0.9477

5 0
3 years ago
13 52<br> — = —<br> 6 X<br> Solve for x please answer quickly
OleMash [197]

Answer:

1/24

Step-by-step explanation:

13/6x = 52

1/6x = 52/13

1/6x = 4

1 = 4(6x)

1 = 24x

24x = 1

x = 1/24

8 0
3 years ago
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