09/22/14

how can a chef use an 11-minute hourglass and a 7-minute hourglass to time vegetables that must steam for 15 minutes (consecutively)?
how can a chef use an 11-minute hourglass and a 7-minute hourglass to time vegetables that must steam for 15 minutes (consecutively)?
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09/22/14

How do I change this expression to become a negative answer without changing or moving and numbers or operation symbols?
2+1/2*1 3/4-3
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09/22/14

what is 5(n-8) + 6(7-2n)
My teacher told me when a minus sign is in a parenthesis like this its not subtraction is a negative, im super confused, i cant find help in my text book or notes.. 
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09/22/14

Which of the following would be the most logical first step to solving this quadratic equation?
Which of the following would be the most logical first step to solving this quadratic equation?x^2 - 4x + 16 = 2A.) Subtract 2 from both sides.B.) Divide both sides by xC.) Take the square root of... more
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09/22/14

the perimeter of a square must be greater than 46in but less than 82in. find the range of possible side lengths that's satisfy these conditions.
hint: the perimeter of a square is given by p=4s, where s represents the length of a side 
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09/22/14

How would I isolate for v on this equation
How would I isolate for v on the equation 110=v2(2)-(1/2)a(2)2
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09/21/14

A farmer has 684 meters of fencing available to enclose a rectangular portion of his land. Only 3 sides require fencing.
(a) Express the area A of the rectangle as a function of x, where x is the length of the side parallel to the river.   (b) For what value of x is the area largest?
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09/21/14

in a rhombus PQRS, angle RPQ= 54 degrees. find angle PRQ, PSR & RQS
GEOMETRY OF A LEVELS
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09/20/14

360 people attend a concert 1/3 of these people are men and 3/10 are women work out the number of children at the concert
It's a problem under fractions I dont understand 
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09/20/14

Resistor Equation Process
The resistor equation is 1/R=1/r1 + 1/r2. Which of the following is the best first step to use in order to isolate r2?   1. Add or subtract to isolate the term for which you are solving. 2.... more
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09/19/14

can you please show me how to solve this?
•So Morris was looking forward to drinking 12 cups of root beer from his large mug.  Then Seymour showed up and morris felt like he should share his root beer.  He found an 8 cup glass and a 5 cup... more
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09/19/14

Calculate volume
The volume of a cylinder can be calculated by V = πhr2, where π = 3.14159 and r is the radius of the circle and h is the height of the cylinder. Calculate the volume in mL if the radius = 0.0560 m... more
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09/19/14

5 + 5 x 5 + 5 = 100 or 5 + 5 x 5 + 5 = 100
I don't know if I should add 5 + 5 = 10 then multiply x 5 = 50 then add 5 = 60 or if I should add 5 + 5 = 10 and add 5 + 5 = 10 then multiply 10 x 10 or if there is another answer.   
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09/18/14

How much of an alloy that is 30% copper should be mixed with 500 ounces of an alloy that is 90% copper in order to get an alloy that is 40% copper?
I'm confused on how to even set this up to solve. Please help.
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09/17/14

Word problem.
A train eaves a station and travels north at a speed of 50 mph. Five house later, a second train leaves on a parallel track and travels north at 175 mps. How far from the station will they meet?
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09/17/14

need help????
lucy is thinking of a number,less than 50,with the decimal part in tenths.If she switches the tens and tenths digit,the number increases by 39.6.If she instead switches the tenths and ones... more
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09/17/14

Perpendicular Line
Which of the following is the equation of a line perpendicular to the line y=-3/2 x + 4 passing through the point (3,9)A.) 2x - 3y = 21B.) -2x + 3y = 21C.) 2x + 3y = 21D.) -2x - 3y = 21
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09/16/14

what is v2 . v72 =
what is √2 . √72 =
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09/16/14

Average Speed III
 A bicyclist travels the first 700 m of a trip at an average speed of 8 m/s, travels the next 600 m in 90 s and the last 50s at a speed of 21 m/s. Find the average speed of the bicyclist for this... more
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09/16/14

inequalities word problems
the lengths of legs of an Isosceles triangle are integers.  the base is half as long as each leg. what are the possible lengths of the legs if the perimeter is between 6 units and 16 units?
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09/16/14

7+4i over 2-5i
7+4i 2-5i       I was sick the day my teacher explained this, please help.
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09/16/14

Prime factorization (6th grade common core math)
A rectangle board game measures 126 cm by 90 cm.  The game board is divided into small squares of equal size. Find the longest possible length of the side of one of the small squares.
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09/16/14

I don't know how to get answer
2 children bd this week. Factor of ages is 24. 36 is multiple of both ages. 30 is multiple of one but not other.  Sum of ages is 14.  How old is each one?
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09/16/14

shift 1produced 4 times as much as shift 2.total production for july was 5,500 jet engines.what was the output for each shift?
at general electric, shift 1 produced 4 times as much as shift 2. general electrics total production for july was 5,500 jet engines. what was the output for each shift?
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09/16/14

Maths help please
no1. what is 53 no2. what is (54)3 no3. what is (-31)0   no.4. what is 4x + 4y-5a= ?  Evaluate given x=3,y=6 and a=-2(evaluate calls for plugging in the values and stating the final... more
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