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 Test Calculators and Practice Answers archive Word Problems Lessons In Depth

 Question 353627: the sum of two numbers is 4, and thier product is -32.what would be thier numbers? Click here to see answer by sofiyac(695)
 Question 353627: the sum of two numbers is 4, and thier product is -32.what would be thier numbers? Click here to see answer by ewatrrr(10682)

 Question 353858: I= Mr-a can you show me each steps Click here to see answer by Alan3354(30993)

 Question 353872: hello, i need help solving this equation for z: 6xy+12xz+9yz=3xyz, solve for z. (i tried to solve it myself and got x=7, but im pretty sure my answer is incorrect so if you could help me that would be great) Thank you Click here to see answer by Alan3354(30993)

 Question 353878: hello i need help on my algebra 2 homework and im not even sure on how to start this problem. If you could help me that would be great. 1.) Write a formula for the surface area of the object in terms of its volume. Sphere: V=4/3πr^3 S=4πr^2 Click here to see answer by ewatrrr(10682)

 Question 353943: Two cars start from two towns 400 miles apart and travel towards each other. They pass each other after 4 hours. Find the speed of each car if their difference between their speeds is 30 miles per hour. Click here to see answer by rfer(12654)

 Question 354013: Dr. Blumen invested \$5000. Part of it was invested in bonds at a rate of 6% and the rest was invested in a money market at a rate of 7.5%. if the annual interest is \$330, how much did she invest in bonds? Click here to see answer by mananth(12270)

 Question 354096: To changr P500, Mark received 4 more P20 bills than P50 bills. How many P20 and P50 bills did he receive? Click here to see answer by stanbon(57282)

 Question 354195: hello, i need a little bit of help with one of the problems in my algebra homework and here it is: Write a formula for the surface are of the object in terms of its volume. Sphere: V=4/3πr^3 S=4πr^2 Im really unsure how to start this problem, but if you could help me that would be great. Thank you Click here to see answer by ewatrrr(10682)

 Question 354239: 3-4q=10q+10 and 3(1+d)-5=3d-2 I need all steps and properties. Click here to see answer by checkley77(12569)

 Question 354353: Evaluate the function at the given value of the independent variable and simplify. F(x)=xsquared + 3 over xcubed - 8x; f(4) Click here to see answer by sofiyac(695)

 Question 354556: Two friends decide to meet in Chicago to attend a white sox game. Rob travels 100 miles in the same time that Carl travels 84 miles. Robs trip uses more interstate highways and he can average 8 mph more than Carl. What's robs average speed? Click here to see answer by mananth(12270)

 Question 354554: Two owners of a candy store want to sell, for \$6 per pound, a mixture of chocolate covered raisins, which usually sells for \$3 per pound, and chocolate covered macadamia nuts, which usually sells for \$8 per pound. They have a 50-pound barrel of the raisins. How many pounds of nuts would they mix with the barrel of raisins so that their target value of \$6 per pound for the mixture? Click here to see answer by scott8148(6628)

 Question 354971: yes! i need help with this problem the sum of two consecutive terms in the arithmetic sequence 1,4,7,10,,, is 299 find these two terms? thank you! Click here to see answer by stanbon(57282)
 Question 354971: yes! i need help with this problem the sum of two consecutive terms in the arithmetic sequence 1,4,7,10,,, is 299 find these two terms? thank you! Click here to see answer by robertb(4012)
 Question 354971: yes! i need help with this problem the sum of two consecutive terms in the arithmetic sequence 1,4,7,10,,, is 299 find these two terms? thank you! Click here to see answer by jrfrunner(365)

 Question 354820: The question is: If sin(2x)-cos(2x)=sqrt(2)sin(2x+xpi), then the number 0 < A < 2. What does A equal? I can't quite find the right trig identities to get the answer. This is what I've done so far, any help or pointers is much appreciated! I've started with the left side to attempt to make it look like the right side which will in the end, give me what A equals. 2sin(x)cos(x) - cos^2 - sin^2(x) 2sin(x)cos(x) -(1-sin^2(x)) - sin^2(x) 2sin(x)cos(x) - 1 + sin^2(x) - sin^2(x) 2sin(x)cos(x) -1 This is where I'm stuck and have tried other trig identities but never wind up with the right answer. Click here to see answer by agentc0re(3)

 Question 355038: Hey my name is Raelynn and I need help on how to solve these problems& the steps to take. 3n-5+4n=6n-12 ...&also 10=5x-2-4x Click here to see answer by jim_thompson5910(28536)
 Question 355038: Hey my name is Raelynn and I need help on how to solve these problems& the steps to take. 3n-5+4n=6n-12 ...&also 10=5x-2-4x Click here to see answer by stanbon(57282)

 Question 354999: Please help me solve this equation: Solve the following system of equations by determining the inverse of the matrix of coefficients and then using matrix multiplication. x+3y+z = 4 2x+2y+z = -1 2x+3y+z = 3 Click here to see answer by Edwin McCravy(8893)

 Question 355064: The sum of the digit of a two digit number is 9. the ten digit number is 3 more than twice the one digit. Click here to see answer by mananth(12270)

 Question 355293: A flare is shot upwards from the deck of a ship. The initial upward velocity of the flare is 30m/s and the deck is 10m above the surface of the ocean. The height of the flare in metres is given by h=-5t^2 +30t+10, where t is in seconds. Question: Determine the instantaneous velocity of the flare at t=3seconds, by using the slopes of secants (3marks:1mark for table, 2marks for slopes) Can one of the tutors help me with the table, I cant seem to find a constant velocity. Thank You! Click here to see answer by Alan3354(30993)

 Question 355432: martha wants to rent a car for a week and to pay no more then \$130. how far can she drive if the car rental costs \$94 a week plus \$.12 a mile? Click here to see answer by robertb(4012)

 Question 355539: Need your help with this problem x=the square root of -7/16 which would be what as a decimal? Thanks Click here to see answer by Alan3354(30993)

 Question 355840: I got a c on a test and I need to study a bit harder. Any advice Click here to see answer by Alan3354(30993)

 Question 355813: 1) Write y=5/3x-6/8 in standard form. 2) Write y=0.40x+0.39 in standard form. Click here to see answer by Fombitz(13828)

 Question 356037: write the converse, inverse, and contrapositive of this statement " if your cell phone is beeping then you need to charge the battery" Click here to see answer by solver91311(16872)

 Question 356090: |3c-6|>3. Is the absolute value 3c+6 or 3c-6? Click here to see answer by edjones(7569)

 Question 356098: 1<2A-5<13 (A+4)(A-4) (A-7)(3A-4) (3A-7)(2A-9) A^2-81 A^2-4-21 2A^2-11A+12 |A+2|=9 |A-7|=15 Click here to see answer by edjones(7569)