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1 year ago

Hello plss help me ahhhhh help me shrieks because i only have 10 minutes left

Mathematics

2 answers:

qaws [65]1 year ago

6 0

Answer:

The 2 Option Is Correct

f(x) = 2(x+3)(x-7)

Step-by-Step Explanation:

Factor.

yawa3891 [41]1 year ago

3 0

Answer:

second option is correct

Step-by-step explanation:

hope this helps

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Gnom [1K]

Answer: You have a wonderful day as well!

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2 years ago

Read 2 more answers

The error is in the middle: 2(-12) = -24 not 24.

sergiy2304 [10]

Answer:

There is no question so I can not respond with a answer.

Step-by-step explanation:

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2 years ago

Can someone please help me out

Tema [17]

A= 3,2
B= -1,-1
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D= 1,4

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2 years ago

Use the tangent to find the unknown side length

SVEN [57.7K]

9.
adj = 4.041...

10.
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11.
adj = .787...

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2 years ago

Element X decays radioactively with a half life of 12 minutes. If there are 200 grams of Element X, how long, to the nearest ten

Semenov [28]

Answer:

It would take 24 minutes for the element to decay to 50 grams

Step-by-step explanation:

The equation for the amount of the element present, after t minutes, is:

$Q(t) = Q(0)e^{-rt}$

In which Q(X) decays radioactively with a half life of 12 minutes.(0) is the initial amount and r is the rate it decreases.

Half life of 12 minutes

This means that $Q(12) = 0.5Q(0)$

$Q(t) = Q(0)e^{-rt}$

$0.5Q(0) = Q(0)e^{-12r}$

$e^{-12r} = 0.5$

$\ln{e^{-12r}} = \ln{0.5}$

$-12r = \ln{0.5}$

$12r = -\ln{0.5}$

$r = -\frac{\ln{0.5}}{12}$

$r = 0.05776$

If there are 200 grams of Element X, how long, to the nearest tenth of a minute, would it take the element to decay to 50 grams?

This is t when Q(t) = 50. Q(0) = 200.

$Q(t) = Q(0)e^{-rt}$

$50 = 200e^{-0.05776t}$

$e^{-0.05776t} = 0.25$

$\ln{e^{-0.05776t}} = \ln{0.25}$

$-0.05776t = \ln{0.25}$

$0.05776t = -\ln{0.25}$

$t = -\frac{\ln{0.25}}{0.05776}$

$t = 24$

It would take 24 minutes for the element to decay to 50 grams

6 0

3 years ago

Hello plss help me ahhhhh help me *shrieks* because i only have 10 minutes left

Hello plss help me ahhhhh help me shrieks because i only have 10 minutes left