Mark M.

07/21/15

Having trouble understanding this limit calculation

Can anyone explain what is happening here? http://imgur.com/hn0UVjn ; I understand multiplying by the conjugate, but why do the signs change in the outlined part? And if the bottom denominator is... more

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Math Problem

07/21/15

Probability

two cards are selected at random(without replacement) from a well shuffled standard deck (52 cards with 4 ACES) of playing cards. What is the probability that: a. They are both ACES?(show... more

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Geometry Circles

07/21/15

If a chord 10 inches long is 5 inches from the center of a circle, find the radius of the circle.

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Fraction

07/21/15

Word Problem Divide fractions

A new custodian cleaned 2/3 of a classroom in ten minutes. This was only 7/8 of what an experienced custodian could do. What part of a room could an experienced custodian clean in ten minutes

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Algebra 2

07/21/15

An anthropologist finds bone that her instruments measure it as 0.105% of the amount of Carbon-14 the bones would have contained when the person was alive. How

I dont understand how to work out this problem. Can someone please explain the equation and how you got the answer thank you.

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Geometry Word Problems

07/21/15

The perimeter of a rectangle is 168 ft. The ratio of the length to the width is 11:1. Find the width of the rectangle.

A.7 ftB.12 ftC.14 ftD.77 ft These are the possible answers.

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Fractions

07/21/15

Word Problem Division of Fraction with mixed numbers

Looking for the proper steps to solve this word problem thanks: Nick wants to make a dog run in his backyard using the end of the garage as one side of the run. If he has 178 3/7 feet of... more

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Trigonometry

07/20/15

solve problem

Find the angle between the given vectors a=i + j b= 4i -3j

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Other

07/20/15

Which kinds of figures are similar: hexagons, rectangles, or equilateral triangles?

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Algebra 2 Algebra 2 Help

07/20/15

An infinite geometric series has a sum of 10 and a common ratio of 0.5

What is the first term of the series? a) 1 b) 5 c) 10 d) 20

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Math Word Problem

07/20/15

Two cards are drawn at random from a standard deck of 52 cards and not replaced.

Two cards are drawn at random from a standard deck of 52 cards and not replaced.What is the probability that the first card is a face card and the second card is a seven? What is the answer to this... more

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Calculus

07/19/15

find the total width, height, and maximum area of the rectangular grid

A farmer builds a rectangular grid of pens with 1 row and 9 columns using 950 feet of fencing. What dimensions will maximize the total area of the pen?The total width of each row of the pens should... more

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Algebra Word Problem

07/19/15

Word Problem

A rectangular piece of metal is 30 in longer than it is wide. Squares with 6 in long are cut from the four corners and the flaps are folded upward to form an open box. If the volume of the box is... more

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Square Roots

07/19/15

Two times the square root of the sum of 3 consecutive even numbers is 24. What are the three numbers?

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Math Word Problem

07/19/15

If a movie starts at 12:00 pm and its 93 minutes long what time does it end at?

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Math Word Problem

07/18/15

how much more is 1/6 than 1/12

how many times more is the portion of time spent going on rides 1/16 then the portion of time spent playing games 1/12

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Multiple Choice

07/18/15

If you Spend 3/5 of your total, then spend $2 on parking, and then spend 3/4 of the remainder you're left with $12. What was your total?

I had a multiple choice question trick me up a little bit. It read " If you Spend 3/5 of your total, then spend $2 on parking, and then spend 3/4 of the remainder you're left with $12. What was... more

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Algebra 2

07/17/15

Name the properties that were used to derive the properties of logarithms.

Name the properties that were used to derive the properties of logarithms. I have no idea how to answer that. ^

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Algebra 2 Algebra 2 Question Algebra 2 Help

07/17/15

Algebra 2 question??

A printer has 8 colors of ink, but can only pick 3 to use on a pamphlet that he is printing. How many different color combination can he choose? A) 24 B) 56 C) 120 D) 336

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Exponential Growth

07/15/15

The cost C of a pound of margarine in 2006 was 66 cents. in 2010 the cost was 83 cents. Assuming the exponential growth model applies:

A) Find the exponential growth rate to the nearest tenth of a percent, and write the equation B) Find the cost of a pound of margarine in 2012 and 2018

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