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2447

If 250 mg of a radioactive element decays to 200 mg in 12 hours, find the half-life of the element. (Round your answer to the nearest

If 250 mg of a radioactive element decays to 200 mg in 12 hours, find the half-life of the element. (Round your answer to the nearest whole number.)

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Guest Apr 19, 2018

Apr 18, 2018

936

+327

Please Help!!! Serious Geometry Question That Has Been Puzzling Me For An TWO Hours!!! {4/18/18}

Okay so the question is...
Write the equation of a parabola with focus and directrix . Show your work, including a sketch.

I always look up the answer before I do a question (Not the steps) so I can work through the read more ..

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KennedyPape Apr 18, 2018

650

Help me

simplify the ratio.
10 to 3.2 is
simplify your answer. Type a fraction

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Guest Apr 18, 2018

686

word problems my weakness pls help

evaluate each functon for the given value.

An investment of $5000 doubles in value every decade. The function f(x)=5000*2x. read more ..

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Guest Apr 18, 2018

638

help pls

determin whether each rule repressents a linear or exponential function.
y=4*52
also explain pls

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Guest Apr 18, 2018

936

+52

Riddle

Before Mount Everest was discovered what was the highest mountain in the world.

off-topic

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Question Apr 18, 2018

1294

+165

please help

A scientist has a hypothesis that as the temperature rises (to a maximum of 95°F), the proportion of people absent from work without just cause increases. He finds that at an outside temperature level x1 = 80°F, the proportion of absenteeism from work read more ..

hay24 Apr 18, 2018

1659

+165

help

Which of the following experiments could be used to simulate an event in which the probability of success, P(success), is 0.70 and the number of successes out of 10 events is desired?

A Use a spinner that is divided into five read more ..

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hay24 Apr 18, 2018

641

+2448

Please help!

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RainbowPanda Apr 18, 2018

775

+165

please help so lost

A research organization recently issued a statement suggesting that 65% of American voters are dissatisfied with the work of Congress. You designed a simulation to generate sample data to reflect this proportion. An automated random number sample program read more ..

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hay24 Apr 18, 2018

1241

+165

please help i dont understand!

A research organization has recently issued a statement suggesting that 40% of American mothers are unhappy with their children's work habits. You have designed a simulation to generate sample data refuting this claim. An automated random number sample read more ..

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hay24 Apr 18, 2018

1227

+165

please help :)

The following dot plot shows the results of a simulation.

Given the mean of the sample proportion is , what would be a read more ..

off-topic

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hay24 Apr 18, 2018

1061

+68

halp

In the figure below, PQRS is a parallelogram of perimeter 24 and area 28. What is the perimeter of rectangle QOST? Include an explanation of how you solved the problem.

https://ibb.co/cRERSS read more ..

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sageatron2000 Apr 18, 2018

1004

+1904

Calculcus help

Find the slope of the tangent to the curve y=3+4x^2-x^3 at the point where x=a. If anyone knows how to solve this problem and can give step-by-step instructions, that would be great. Thanks.

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gibsonj338 Apr 18, 2018

1251

+63

Bio

A cat is discovered with a very short tail. What would prove that this change was caused by a genetic mutation and not because the cat lost most of its tail at some point in its life?
Question 8 options:
a physical examination of the read more ..

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summertastic1011 Apr 18, 2018

1242

+4619

basicquestion

A survey was conducted regarding the number of automotive vehicles owned per household. The results of the survey are as follows: Express the average number of vehicles per household as a decimal rounded to the nearest tenth.

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tertre Apr 18, 2018

-1

712

+4116

Help 3,4

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NotSoSmart Apr 18, 2018

-1

818

+4116

Help 1,2

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NotSoSmart Apr 18, 2018

1796

+1452

MORE 'funky' Circle Areas

In the diagram, four circles of radius 4 units intersect at the origin. What is the number of square units in the area of the shaded region? Express your answer in terms of pi.
read more ..

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AnonymousConfusedGuy Apr 18, 2018

874

+168

rates for pay

Lena works 34 hours monday to friday at her normal rate of pay.
On Saturday she gets an overtime rate of pay - which is 1.5 her normal rate.

She works for 4 hours on a Saturday. read more ..

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Walthamx Apr 18, 2018

2564

+4619

HELP

An 8.5-by-11-inch piece of paper is folded in half repeatedly (never being unfolded), each time shortening what was then the longer side. What is the length of the longest side, in inches, immediately after the second fold? Express your answer as a decimal read more ..

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tertre Apr 18, 2018

698

help!!!!!easy math

1. Circle 1 has center (-4,5) and a radius of 6cm. Circle 2 has (2,-3) and a radius of 9cm. What transformations can be applied to circle 1 to prove that the circles are similar? Enter your scale factor as a fraction in simplest form.
- The circles read more ..

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Guest Apr 18, 2018

1762

+1452

'Funky' Circle Areas

Two concentric circles are centered at point P. The sides of a 45 degree angle at P form an arc on the smaller circle that is the same length as an arc on the larger circle formed by the sides of a 36 degree angle at P. What is the ratio of the area of read more ..

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AnonymousConfusedGuy Apr 18, 2018

1047

What are the coordinates of the hole in the graph of the function?

Hi, I need help with this one question:

What are the coordinates of the hole in the graph of the function f(x)?
read more ..

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Guest Apr 18, 2018

893

+4619

question

How much money should I invest at an annually compounded interest rate of so that I have in ten years? Express your answer as a dollar value rounded to the nearest cent.

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tertre Apr 18, 2018

All Questions ⁺⁰234922 Questions

If 250 mg of a radioactive element decays to 200 mg in 12 hours, find the half-life of the element. (Round your answer to the nearest

Please Help!!! Serious Geometry Question That Has Been Puzzling Me For An TWO Hours!!! {4/18/18}

Help me

word problems my weakness pls help

help pls

Riddle

please help

help

Please help!

please help so lost

please help i dont understand!

please help :)

halp

Calculcus help

Bio

basicquestion

Help 3,4

Help 1,2

MORE 'funky' Circle Areas

rates for pay

HELP

help!!!!!easy math

'Funky' Circle Areas

What are the coordinates of the hole in the graph of the function?

question

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