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2 years ago

13

Element X decays radioactively with a half life of 11 minutes. If there are 790 grams of Element X, how long, to the nearest ten

th of a minute, would it take the element to decay to 40 grams?

1 answer:

leva [86]2 years ago

3 0

Answer:

47.34158

rounded to the nearest tenth of a minute: 47.3

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Determine the relationship between the two triangles and whether or not they ca

AnnZ [28]

Answer:

They are congruent.

Step-by-step explanation:

The have the same side length, as shown by the marking on the side next to the double marked angle and across from single marked angle. They have the same angle measures located in the same places as well. They are congruent as proven by shape, angle measures, and side length.

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2 years ago

Pls help me solve this please I will give 70 points please help

Mashutka [201]

Answer:

Fraction Form: $\frac{2187}{4000000}$

Decimal Form: $0.000547$

Step-by-step explanation:

$=\frac{5}{256} * \frac{3}{5}^1^2 / \frac{3}{5}^5$

$\frac{3}{5}^1^2/\frac{3}{5}^5=\frac{2187}{78125}$

$=\frac{5}{256}*\frac{2187}{78125}$

$\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{a}{b}\cdot \frac{c}{d}=\frac{a\:\cdot \:c}{b\:\cdot \:d}$

$\frac{5*2187}{256*78125}$

$\mathrm{Factor\:the\:number:\:}\:78125=5\cdot \:15625$

$=\frac{5*2187}{256*5*15625}$

$\mathrm{Cancel\:the\:common\:factor:}\:5$

$=\frac{2187}{256*15625}$

$\mathrm{Multiply\:the\:numbers:}\:256\cdot \:15625=4000000$

$\frac{2187}{4000000}$

[RevyBreeze]

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1 year ago

Use the diagram and table shown to answer the question.

Sergeu [11.5K]

........................................ 40 ......................................

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