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3 years ago

11

Estimate 62% of 196.

1 answer:

kondor19780726 [428]3 years ago

4 0

Answer : 62% of 196 is 121.52

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The half-life of Radium-226 is 1590 years. If a sample contains 200 mg, how many mg will remain after 1000 years?

adell [148]

Answer: 129.33 g

Step-by-step explanation:

$$$Let $p=A \cdot e^{n t}$ \\$(p=$ present amount, $A=$ initial amount, $n=$ decay rate, $t=$ time)$

$\begin{aligned}&\Rightarrow \text { Given } p=\frac{A}{2} \ a t \ t=1590 \\&\Rightarrow \frac{1}{2}=e^{1590n} \Rightarrow n=\frac{\ln (1 / 2)}{1590}=-0.00043594162\end{aligned}$

$If $A=200 \mathrm{mg}$ and $t=1000$ then,$$\begin{aligned}P &=200 e^{\left(\frac{\ln \left(1/2\right)}{1590}\right) \cdot 1000} \text \\\\&=129.33 \text { grams}\end{aligned}$

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3 years ago

What is the volume of soup that will fit in a cylindrical-shaped can with a height that is 2 inches longer than the radius?

trasher [3.6K]

Answer:

V = πr³ + 2πr²

Step-by-step explanation:

Volume of a cylinder:

V = πr²h

with radius r and height h = 2 + r:

V = πr²(2 + r) = πr³ + 2πr²

4 0

3 years ago

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The ratio of white flour to whole wheat flour in a bread recipe is 2:3. The recipe uses 10 cups of flour. How much of each type

lesantik [10]

This means that 2/5 is white and 3/5 is whole wheat, so 2/5 of 10=4 cups of white, 3/5 of 10=6 cups of whole wheat.

8 0

4 years ago

PLz anwser will mark brain list (find the area)

eduard

Answer:

A = 24

Area for a triangle = 1/2 b * h

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3 years ago

Please help asap oiuytyghjkjhugytfhjkl

Alika [10]

Answer:

112

Step-by-step explanation:

correct me if im wrong.

I got this from doing 30 percent out of 160

160×0.30

160-48=112

7 0

3 years ago

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