Mark M.

Rational Numbers Proofs

06/17/16

Prove that [(x,y)]= o if and only if x=0

r+(-r)=o Inverse law for addition

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L.a Arts

06/17/16

what is a simple sentence

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Algebra

06/17/16

factor the trinomial 11

Find the perfect square trinomial whose first two terms are x squared − 1/2x ? , and then factor the trinomial.

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Math Math Help Math Word Problem

06/17/16

It takes 15 electricians 24 days to wire a new housing subdivision. How many days would 18 electricians take to do the same job, assuming all electricians work

I keep getting 5.33333333333333333333333333333333333333333333333333 (repeated) please help! Lesson19

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Other

06/17/16

There are 5 questions given below . The questions are related to rational numbers .

Q.1. Give a rational number which when added to it gives the same number Q.2. By what rational number should we divide 22/7 , so as to get the number - 11/24. Q.3 Represent the rational numbers -... more

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Averages

06/17/16

How to average 2 averages with a constant variable present

For example, formula used is (A*200,000/B) = C. Is it better to average C1 and C2 such that: (1*200000)/366425 = 0.55 (0*200000)/185624 = 0.00 and average these two numbers (0.55+0.00)/2 =... more

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Algebra Word Problem

06/16/16

Word Problem, I've tried this problem over and over keep getting different answers. please help!

A coffee distributor needs to mix a(n) Arabian Mocha coffee blend that normally sells for $9.50 per pound with a Tanzanian coffee blend that normally sells for $14.80 per pound to create 90 pounds... more

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Math

06/16/16

Why can the numerator and denominator of a rational expression be divided by their common factors? What conditions must be placed on the value of the variable

I have search in my College algebra books and no answer found.

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Become A Tutor

06/16/16

how can I become a tutor?

I am a teacher,I arrived portand state university to study English.I can teach Mandarin Chinese.

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Complex Numbers

06/16/16

How to find the square root of (7-24i) i complex number

Square root of this complex number

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Vertex

06/16/16

Find the vertex of the quadratic function. y=3(x+13)^2+1

please help

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Solving Quadratic Equation By Factoring

06/16/16

The solutions to a quadratic equation are x = 2 and x = 7. If k is a nonzero constant, which of the following must be equal to the quadratic equation?

i hate the quadratic formula please help

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Math7

06/16/16

0 element empty. Trye or false? Pls help

i cry i die

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Math Word Problem

06/15/16

after how many visits to the rink is the total cost for members, including the membership fee, the same as the total cost for nonmembers?

to become a member of an ice skating rink, you have to pay 30 dollars membership fee. the cost of admission to the rink is 5 dollars for members and 7 dollars for nonmembers.

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Other

06/15/16

how do i solve this??

dave wants to determine how long it will take him to run to the park and back home. rewrite the formula to determine daves time . The formula is {d=r*t}

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Pre Algebra

06/14/16

X+2y=4. (-4,?). Find the missing coordinates

It is a difficult answer

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Trigonometry Pre Calculus Angles

06/14/16

Trigonometry

from the top of a building a person spots two boats out on the lake. the angle of depression from the person to one of the boats is 48 degrees, the angle of depression from the person to the other... more

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