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Tasya [4]
3 years ago
13

An old bone contains 80% of its original carbon-14. Use the half-life model to find the age of the bone. Find an equation equiva

lent toP (t) = A (one-half) Superscript StartFraction t Over 5,730 EndFraction
Mathematics
2 answers:
Marta_Voda [28]3 years ago
8 0

P(t) over A is equivalent to (one-half) Superscript t Over 5,730

Anon25 [30]3 years ago
6 0

<u>First Part:</u> D <em>    P(t)/A=(1/2)^t/5,730</em>

<u />

<u>Second Part:</u> 0.8

<u />

<u>Third Part:</u> B    <em>about 1,845 years</em>

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vlada-n [284]
Y=1/14x might be the answer
4 0
3 years ago
X/3 equals 1351 over seven
Fantom [35]
X/3=1351/7
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7x=4053
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3 years ago
What is the solution to the equation <br> 13×3/4+x=7(1/4)
yan [13]
I'm going to assume you mean:

13 * (3/4) + x = 7 * (1/4)

Let's go ahead and simplify the right side.

7 * (1/4) = 1.75

So now we have:


13 * (3/4) + x = 1.75

Now let's take care of the right side. Multiplication before addition.

13 * (3/4) = 9.75

9.75 + x = 1.75

To isolate x, we subtract 9.75 from both sides.

9.75 - 9.75 + x = 1.75 - 9.75

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Hopefully I spaced this well. \('-')/
5 0
3 years ago
Reduce to simplest form.<br> -7/12 + 3/8<br> (They are fractions)
denpristay [2]

Answer:

-5/24

Step-by-step explanation:

You first change -7/12 to -14/24, and 3/8 to 9/24 so they have the same denominator. You then do -14/24 + 9/24. That will be the same as the opposite of the answer to 14/24 - 9/24.

14/24 - 9/24 = 5/24

-5/24

4 0
3 years ago
If there was a total of 30 computers and the computer lab is removing 3 broken computers and adding 13 wireless devices, about w
Liula [17]

32.5 % of lab are wireless devices

<em><u>Solution:</u></em>

Given that there was a total of 30 computers and the computer lab is removing 3 broken computers and adding 13 wireless devices

Now we can first find out total number of computers and devices in lab

total number of computers and devices in lab = 30 computers - 3 + 13 wireless devices

total number of computers and devices in lab = 30 - 3 + 13 = 40

So there are 40 computers and wireless devices in lab

<em><u>To find: what percent of the lab are wireless devices</u></em>

So we have to find what percent of 40 is 13

Let "a" be the required percent

a % of 40 = 13

\frac{a}{100} \times 40 = 13\\\\a = \frac{13 \times 100}{40}\\\\a = 32.5

32.5 % of of lab are wireless devices

6 0
3 years ago
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