10/26/14

Together it takes Sally and Tom 42 mins to complete a job. Alone, Sally finishes 13 mins faster than Tom. How long will it take Tom to complete the job?
Hints:  Work = rate x mins Rate = work ÷ mins   Tom takes between 80 - 100 mins
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10/26/14

A circular hole with diameter 6 cm is cut out of a circular piece of card with a diameter of 12 cm.
A circular hole with diameter 6 cm is cutout of a circular piece of card with adiameter of 12 cm. The area of theremaining card, in cm2 , is(A) 6π(B) 27π(C) 36π(D) 108π
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10/26/14

a square has the same area with a rectangle of length 9 centimeters and 16 centimeters. What is the length of the square.
a square has the same area with a rectangle of length 9 centimeters and 16 centimeters. What is the length of the square.
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10/26/14

Three lights flash at intervals of 4, 6 and 10 seconds respectively. They are started together. How soon after will they next flash together again?
Three lights flash at intervals of 4, 6 and 10 seconds respectively. They are startedtogether. How soon after will they next flash together again?
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10/26/14

$x is divided among three boys, Ryan, Keith and Andrew, in the ratio 2 : 3 : 7, respectively. If Andrew gets $15 more than Keith, what is the value of x ?
$x is divided among three boys, Ryan, Keith and Andrew, in the ratio 2 : 3 : 7, respectively.If Andrew gets $15 more than Keith, what is the value of x ?
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10/24/14

The floor of a one-story building is 14 feet longer than it is wide (see figure). The building has 1395 square feet of floor space.
(a) Write a quadratic equation for the area of the floor in terms of w.   (b) Find the length l and width w of the floor. w = ftl = Incorrect: Your answer is incorrect. ft
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10/24/14

What is the maximum number of digits possible in the repeating block when you divide out the rational 1/46229. How do you know this?
is it one less than the denominator i.e. 46229? Explain why
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10/24/14

rational expression
2/w+2 -3/w + w+10/w^2-4  
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10/24/14

Please show work. thank you
The line passes through (-3,7) and is perpendicular to y=3x
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10/24/14

Please show work. thank you
The line has a y-intercept of 3 and an x-intercept of -5.
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10/24/14

Please show work
The y-intercept of a line is -1/2, and it is parallel to the graph of -3x+y-4=0.
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10/24/14

How can you tell whether or not a rational expression written in fractional form will terminate or repeat?
I would like to know how to tell if it terminates or repeats  without finding the decimal expression
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10/23/14

How do you simplify without a fractional exponent?
1.) 12^3/2 2.) (-8)^5/3      -----------      (-8)^4/3    
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10/23/14

I'm confused, explain to me what it is I have to do
Zeno is walking in a straight line. With each step, he covers half the remaining distance between him and the end of his path, which is a total of 8 feet. After 4 steps, he will have walked _____... more
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10/23/14

Help me please!
If you expand the binomial expression (x + y)^9, there will be 10 terms. What is the coefficient of the third term?
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10/23/14

Show me a method of calculation of square roots please.
In traditional long division only so many remainders may drop down which forces rationals to repeat or terminate. Can you show me a method for calculation of square roots that is different  showing... more
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10/23/14

If doughnuts are usually 75 cents each, but there is a sale on Friday advertising them as 1+ ½ dozen for $10.80, what is the new cost for just one?
I need to know the steps needed.
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10/23/14

A Honda salesman gets 4% commission on all sales. What is his commission for the sale of an Accord with a $26,000 price?
Thank you.
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10/23/14

A CD was on sale for $1.86 off its original price of $15.50. What were the discount rate and the sale price?
Homework help!
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10/23/14

Jenny fills some empty flowerpots completely with compost.
Jenny fills some empty flowerpots completely with compost. Each flowerpot is in the shape of a cylinder of height 15 cm and radius 6 cm. She has a 15 litre bag of compost. She fills up each... more
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10/23/14

A fair coin is to be flipped 5 times. What is the probability that the result will not be 5 heads in a row. Express your answer as a common fraction.
Answer this in a common fraction.
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10/23/14

Selina hit one out of six pitches. What is her percentage?
Selina hit one out of six pitches. Convert to percentage   
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10/23/14

For a party of 250 people, the caterer decided that each person should receive a 72 gram serving of glazed carrots.
Question: How many bags of frozen carrots should be ordered if each bag weighs 1.5 pounds?  
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10/22/14

why is the absolute value of 5x+3 > -2 all real numbers?
We got his question in math today and my teacher didn't really explain how it is real numbers and I just want to make sure I understand.
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10/22/14

A grandmother says her grandson is two years older than her grandaughter and together,there are atleast 12 years old. How old are her grandson and gradaughter?
A grandmother says her grandson is two years older than her grandaughter and together,there are atleast 12 years old. How old are her grandson and gradaughter?
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