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3 years ago

A student in greece discovers a pottery bowl that contains 48 of its original amount of c-14

2 answers:

tatiyna3 years ago

4 0

O you know that N/N0 = .48 and k=.00001 (and e=2.718) Your equation becomes: .48 = 2.718*(.00001*t) NOTE: you probably mean.48=(2.718).00001t

Harman [31]3 years ago

4 0

i have all the same questions like this and one has yet to be answered

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There are 800 members in an astronomy club, and 320 of them are females. What percent of the members are males.

Liula [17]

ANSWER: 60% of the members are males

How?
-800 total
-320 females
800 - 320 = 480
480/800 = 0.6

Hope this Helps!

8 0

3 years ago

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In the figure, line L1 is parallel to line L2. If the measure of ∠4 = 144°, what is the measure of ∠6 and why? A. 144°, vertical

Brrunno [24]

Answer:the answer is B

Step-by-step explanation:

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3 years ago

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Given the position of the particle, what the position(s) of the particle when it’s at rest

choli [55]

The position function of a particle is given by:

$X\mleft(t\mright)=\frac{2}{3}t^3-\frac{9}{2}t^2-18t$

The velocity function is the derivative of the position:

$\begin{gathered} V(t)=\frac{2}{3}(3t^2)-\frac{9}{2}(2t)-18 \\ \text{Simplifying:} \\ V(t)=2t^2-9t-18 \end{gathered}$

The particle will be at rest when the velocity is 0, thus we solve the equation:

$2t^2-9t-18=0$

The coefficients of this equation are: a = 2, b = -9, c = -18

Solve by using the formula:

$t=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a}$

Substituting:

$\begin{gathered} t=\frac{9\pm\sqrt[]{81-4(2)(-18)}}{2(2)} \\ t=\frac{9\pm\sqrt[]{81+144}}{4} \\ t=\frac{9\pm\sqrt[]{225}}{4} \\ t=\frac{9\pm15}{4} \end{gathered}$

We have two possible answers:

$\begin{gathered} t=\frac{9+15}{4}=6 \\ t=\frac{9-15}{4}=-\frac{3}{2} \end{gathered}$

We only accept the positive answer because the time cannot be negative.

Now calculate the position for t = 6:

$undefined$

6 0

1 year ago

-3+x=4 solve this question

user100 [1]

Just add 3 to both sides
x = 7

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3 years ago

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How old was Lisa x years ago if she is now 13? Which expression represents this?

gogolik [260]

Answer:13-x= y

Step-by-step explanation:

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3 years ago

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