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 Test Calculators and Practice Answers archive Word Problems Lessons In Depth

 Question 602031: Kate has \$13.65 in nickels, dimes, and quarters in her purse. If the number of dimes is three more than the number of nickels, and the number of quarters is four times the number of dimes, how many dimes does Kate have in her purse? Thank you in advanced. If you could please show let statements and work. :) Click here to see answer by scott8148(6628)

 Question 602174: 16x^2+94y^2+96x-8y+84=0 is this a circle,ellipse,hyperbola,line ,parabola or point? Can someone help me solve this? Click here to see answer by Alan3354(30993)

 Question 602218: How is decimal 4.85 converted.to fraction 4 6/7 ..what are the steps and why please?!? Click here to see answer by mananth(12270)

 Question 602440: A two-digit number is 4 times the sum of its digits. The tens digit is 3 less than the units digit. What is the number? Click here to see answer by lwsshak3(6522)
 Question 602440: A two-digit number is 4 times the sum of its digits. The tens digit is 3 less than the units digit. What is the number? Click here to see answer by ewatrrr(10682)

 Question 602462: ((cos x)/(1-tan x))+((sin x)/(1-cot x))= sin x+ cos x How do you work out this identity? Click here to see answer by jim_thompson5910(28598)

 Question 602461: 1 1/2 + 5 y/3 = 7 1/6 Click here to see answer by stanbon(57407)

 Question 602428: A 1-ox mouse takes about 16 times as many breaths as does a 3-ton elphant. if the two animals takes a combined total 170 breaths per minute, how many breaths does each take during that time period? Click here to see answer by KMST(1874)

 Question 602737: How do I find the maximum area for a rectangle with a fixed perimeter of 120 Click here to see answer by rfer(12670)
 Question 602737: How do I find the maximum area for a rectangle with a fixed perimeter of 120 Click here to see answer by stanbon(57407)

 Question 602851: 3x(x-3)=2x(x+2)+6, so far I've got 3x^2-9x-2x^2-4x-6=0, then x^2-13x-6=0 but after this I'm lost? Click here to see answer by Alan3354(30993)
 Question 602851: 3x(x-3)=2x(x+2)+6, so far I've got 3x^2-9x-2x^2-4x-6=0, then x^2-13x-6=0 but after this I'm lost? Click here to see answer by flame8855(424)

 Question 602853: a boat goes 350 miles downstream in the same time go 250 miles upstream . The speed of the current is 5 miles per hour. Find the speed of the boat in still water. I know the answer is 45 mph but i want to know how they got it. Click here to see answer by scott8148(6628)

 Question 603031: if x-squared+x+1=0, what is the value of x-cubed+ 1 over x-cubed? please give information on how to solve Click here to see answer by nyc_function(2733)

 Question 603665: A 4.5 metre ladder rests against a vertical wall with its feet on level ground 2.5 m from the wall. (a) How high up the wall does it reach? (b) If the feet of the ladder are pushed 0.8 m closer to the wall, how much higher up the wall will it reach? Click here to see answer by stanbon(57407)

 Question 603764: I was wondering how you would work out 1/3 - 2/11 because 3 doesn't go into 11. I am very confused. Thank-you Click here to see answer by Edwin McCravy(8912)

 Question 603935: A firework launched into the air with an initial velocity of 160 per second. People wonder how high the rocket will go before it begins to descend back to the ground. The formula for vertical motion is h(f)= -16+vt+s, v is the initial velocity and s is the initial height. Time t is measured in seconds, and height, h, in feet. What function describes the height in feet and t seconds into the launch ? Click here to see answer by stanbon(57407)

 Question 603952: How do you write an ellipse in standard form when you only know the foci and the covertices? Click here to see answer by KMST(1874)

 Question 604039: Find the product: (4b – 9)(7b – 6) Click here to see answer by Alan3354(30993)