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2 years ago

11

Explain how to draw a line segments that measures 2 7/16 inches.

1 answer:

Ksivusya [100]2 years ago

7 0

Answer: draw the line using a ruler on which you have identified points 2 7/16 inches apart.

Step-by-step explanation: On your ruler graduated in inches with marks at 1/16-inch intervals, locate the 0 mark and the mark 1/16 inch before the half-inch mark between 2 and 3 inches.Draw your line along the edge of the ruler between the two marks you have identified: 0 and 2 7/16. The line will be 2 7/16 inches long.

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Question 1 ( point) A 64g sample of Germanium-66 is left undisturbed for 12.5 hours. At the end of that period, only 2.0g remain

iVinArrow [24]

Answer:

2.5 half-lives

Step-by-step explanation:

Find $t_{h}$ in $N(t)=N_{0}e^{-kt}$ given $N(t) = 2, N_{0} =64,t=\frac{25}{2}$

$N(t)$ is the amount after the time $t$ , $N_0$ `is the initial amount, $t_{h}$ is the half-life

We know that after half-life there will be twice less the initial quantity:

$N(t_{h})=\frac{N_{0} }{2}=N_{0}e^{kt_{h} }$ .

Simplifying gives $\frac{1}{2} =e^{-kt_h} or k = -\frac{In(\frac{1}{2}) }{t_{h} } .$

Plugging this into the initial equation, we obtain that $N(t)=N_{0}e^\frac{In(\frac{1}{2}) }{t_{h} }$ or $N(t)= N_{0} (\frac{1}{2})^\frac{t}{t_h}.$

Finally, just plug in the given values and find the unknown one.

From $2=64(\frac{1}{2})^\frac{\frac{25}{2} }{t_h}$ , we have that $t_h$ = $\frac{25 In (2)}{2 In (32)\\}$

So you should get: $t_{h} =\frac{25 In (2)}{2 In (32)\\}=2.5.$

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5 0

3 years ago

Read 2 more answers

What is the solution to the equation 2/3x+1=1/6x-7?<br> O X=-16<br> O x=-4<br> O x=4<br> OX = 16

vlabodo [156]

Answer:

The answer is x=-16.

Step-by-step explanation:

I cant give you the step by step explanantion but I can later! I hope this helps thoough!

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3 years ago

Factor a number, variable, or expression out of the polynomial shown below. <br><br> 3x + 9

Olenka [21]

Both 3x and 9 are a multiple of 3, so we can factor out a 3:
3x + 9 = 3 (x + 3)

6 0

4 years ago

W minus six over five equals negative two

Rama09 [41]

W - 6/5 = -2
w - 6 = -2 x 5 = -10
w = -10 + 6
w = -4

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3 years ago

Which of the following is another way to express the equation 8 - (-d) = 43?

Mazyrski [523]

Answer:

8 + d = 43

Step-by-step explanation:

$8 - ( - d) = 48$

$= > 8 + (- 1) \times ( - d) = 43$

$= > 8 + d = 43$

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3 years ago

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