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 Test Calculators and Practice Answers archive Word Problems Lessons In Depth

 Question 331134: #1---The length of one leg of a right triangle is 12 meters. the length of the hypotenuse is 8 meters longer than the other leg. find the length of the hypotenuse and the other leg of the triangle. #2---Two angles are supplementary if the sum of their angles is 180 degrees. One of two supplementary angles is 8 degrees less than three times the other. find the measure of each angle. Click here to see answer by mananth(12270)

 Question 331143: Can you please help me solve this story problem. Soybean meal is 16% protein. Cornmeal is 8% protein. How many pounds of each should be mixed together in order to get 320 pounds mixture that is 12% protein? How many pounds of cornmeal should be in the mixture? How many pounds of the soybean meal should be in the mixture? Thanks for your help :O) Click here to see answer by mananth(12270)

 Question 331089: If 3x + 5x = -8, then x + 1 = A. -2 B. -1 C. 0 D. 1 E. 2 Click here to see answer by neatmath(300)

 Question 331267: Write an expression to represent the slope of a line that passes through point A(0,1) and through a second point B(x,2x)that lies on the graph of the function f(x)=2x. The evaluate your expression to the nearest thousandth for x=2,x=1,x=0.5,x=0.1. (Scale: 2 spaces=1 unit) Click here to see answer by solver91311(16885)

 Question 331298: factor: x to the second power minus ax minus bx plus ab Click here to see answer by scott8148(6628)

 Question 331414: 1. Find the heat flow during a time period of 5.00 hours through a glass window, whose thickness is 0.15 in. with an area of 35.00 square feet, if the average outer surface temperature is 22.00 degrees Fahrenheit and the average inner temperature is 48.00 degrees Fahrenheit. Express your answer to the nearest hundredths in scientific notation Click here to see answer by solver91311(16885)

 Question 331415: A system consisting of two fixed and two movable pulleys has a mechanical advantage of 4.00. If a force of 124 N is exerted, what weight can be raised? Express your answer to the nearest metric. Click here to see answer by solver91311(16885)

 Question 331409: How do I solve these problems? (1) 7 3\4 + 17.85 + 6 1\2 ...(2) 9\6=x\8...(3) 1\2 +(2\3÷3\4)-(4\5×5\6) Click here to see answer by rfer(12660)

 Question 331524: a man's age is 3 times the sum of the ages of his two sons.after 5years his age will be twice the sum of the ages of his two sons.find the age of the man. Click here to see answer by mananth(12270)

 Question 331487: I have asked for help on this story problem before however I have never heard back so I am still need of some help with solving this story problem. In 1991 the life expectancy of males in a certain country was 63.2 years. In 1996 it was 65.7 years. Let E represent the life expectancy in year t, and let + represent the number of years since 1991. The linear function E(t) that fits the data is E)t)=_____t + _____. Use the function to predict the life expectancy of males in 2006. E (15)= _____ and round to the nearest tenth. Thanks for your help :o) Click here to see answer by vleith(2825)

 Question 331539: Write an equation of a line through the given points in Ax + By = C form. (2,3), (1,5) Click here to see answer by Alan3354(30993)

 Question 331457: It takes painter A 3 hours to paint a certain are of a house. It takes painter B 5 hours to do the same job. How long would it take them, working together, to do the painting job? Click here to see answer by Alan3354(30993)

 Question 331738: the sum of 2 numbers is 74.when the bigger number is divided by the smaller number,the answer is 5 remainder 8. what are the two numbers? Click here to see answer by privani(34)

 Question 331812: On the road map with a scales of 1/4 inch per 10 miles, the highway from Willkes baree to Scranton is 1-3/8 inches long. How many miles long is this highway? Click here to see answer by rfer(12660)

 Question 331815: If 5 x 10 n = 0.005 , then n = ? Note, n is a small on top of the 10 Click here to see answer by checkley77(12569)

 Question 332278: How far away, in km, is an airplane measured by a radar wave that that takes 9.36 x 10^ -4 s to go and return to the radar unit that is measuring the distance? Express your answer to the nearest km. Click here to see answer by Alan3354(30993)

 Question 332416: Solve theequation A = 2 (a + b -5), for b. Click here to see answer by mananth(12270)

 Question 332414: Solve for all x: 8x + 9 > 6x -1 Click here to see answer by mananth(12270)

 Question 332549: A merchant mixed 12 lb of a cinnamon tea with 6 lb of spice tea. The 18-pound mixture cost \$39. A second mixture included 14 lb of the cinnamon tea and 8 lb of the spice tea. The 22-pound mixture cost \$48. Find the cost per pound of the cinnamon tea and of the spice tea. Click here to see answer by nerdybill(6958)

 Question 332541: During one month, a homeowner used 200 units of electricity and 110 units of gas for a total of \$79.00. The next month, 230 units of electricity and 250 units of gas were used for a total of \$103.20. Find the cost per unit of gas. Click here to see answer by ankor@dixie-net.com(15652)

 Question 332548: A turboprop plane flying with the wind flew 1,400 mi in 5 h. Flying against the wind, the plane required 7 h to travel the same distance. Find the rate of the wind and the rate of the plane in calm air. Click here to see answer by galactus(183)

 Question 332640: Tim's brothers are 174 cm, 180 cm, 179 cm, and 172 cm tall. The average male is 176.5 cm tall. How tall is Tim if he and his brothers have an average height of 176.5 cm? Click here to see answer by solver91311(16885)

 Question 332639: for each solution find three solutions answers may vary. (1) y=5x (2)y=2x+5 (3) 3+y=x Click here to see answer by solver91311(16885)

 Question 332646: I don't know what it is called but i do not know how to do this: Example x-3=3x+5 Click here to see answer by benazir.sj@gmail.com(109)
 Question 332646: I don't know what it is called but i do not know how to do this: Example x-3=3x+5 Click here to see answer by rfer(12660)

 Question 332537: A motor boat traveling with the current went 12 mi in 1 h. Against the current, it took 2 h to travel the same distance. Find the rate of the boat in calm water and the rate of the current. Click here to see answer by ankor@dixie-net.com(15652)

 Question 332680: To receive a A in math, tanya must average at least 90 on five tests. Scores on her first four tests were 90, 91, 81, and 92. What is the lowest score that tanya can geton her last test and still receive an A? Click here to see answer by rfer(12660)

 Question 332679: Find the grade point average . Assume the grade point values are 4.0 for a A, 3.0 for a B, and so on. so my question is if matt got a A in math, A C in science, a F in social studies and a B in drawing what would be his grade point average round to nearest tenth. Click here to see answer by rfer(12660)

 Question 332695: How do you write verbal expression for algebraic expressions Click here to see answer by unlockmath(1599)

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