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 Test Calculators and Practice Answers archive Word Problems Lessons In Depth

 Question 408972: How to solve 4^2x=32^1/2 Click here to see answer by Coyote 10(7)

 Question 408850: What is the volum of x Click here to see answer by rfadrogane(214)

 Question 409055: Pc=fm pm + fr + pr fm=.65 pm = .882 fr=.35 pr =2.60 How do I solve this? Thank u Click here to see answer by clarkp(14)

 Question 409094: How do you solve this x+2 ___ =4 x-4 Click here to see answer by rfer(12666)

 Question 409139: Can you help me explain zero and negative exponents? Click here to see answer by clarkp(14)

 Question 409203: If a 1 = 4 and d =2, what are the first four terms of the arithmetic sequence? Click here to see answer by richard1234(5390)

 Question 409187: What is the sum of the first 25 natural numbers? Click here to see answer by richard1234(5390)

 Question 409272: If the distance between key west and cuba is 9/10 inch. What is the actual distance? Click here to see answer by solver91311(16897)
 Question 409272: If the distance between key west and cuba is 9/10 inch. What is the actual distance? Click here to see answer by richard1234(5390)

 Question 409559: Good evening,I am in need of help of a certain topic"Linear system using substitution" Can you use these examples to show me step by step? 4x-y=17 -9x+8y=2 Click here to see answer by Edwin McCravy(8909)
 Question 409559: Good evening,I am in need of help of a certain topic"Linear system using substitution" Can you use these examples to show me step by step? 4x-y=17 -9x+8y=2 Click here to see answer by ewatrrr(10682)

 Question 409660: how do you factor this 3x to the second power + 24x + 48 Click here to see answer by MathLover1(6634)

 Question 409632: Which expression is equivalent to 5(7+2)? (5x7)+(5x2) (5x7)(5x2) What property is being used? Click here to see answer by MathLover1(6634)

 Question 409853: the carpenter saws a board that is 22 feet long into two pieces. One piece is to be 1 foot longer than twice the length of the shorter piece. Find the length of each piece. Click here to see answer by fractalier(2101)

 Question 409995: Sketch the first-quadrant portions of y=x^2+8x+16 Click here to see answer by ewatrrr(10682)

 Question 410000: What are first quadrant portions Click here to see answer by ewatrrr(10682)

 Question 410029: The area of the polygon is 218 square inches. Find the approximate length of one side of this polygon. Click here to see answer by Alan3354(30993)

 Question 410055: Customer buys a toaster oven for \$45. The price was 1/4 off the list price. What was the list price Click here to see answer by rfer(12666)

 Question 410191: Please HELP IF YOU KNOW SOME CHEMISTRY BASIS. . Apatite (Ca5(PO4)3F) is used to manufacture fertilizer. How many kilograms of pure phosphorus (P) is included in 1150 kg of apatite? . I tried and found 70622.23g Click here to see answer by solver91311(16897)
 Question 410191: Please HELP IF YOU KNOW SOME CHEMISTRY BASIS. . Apatite (Ca5(PO4)3F) is used to manufacture fertilizer. How many kilograms of pure phosphorus (P) is included in 1150 kg of apatite? . I tried and found 70622.23g Click here to see answer by richard1234(5390)

 Question 410210: I need help solving 2 times the quantity of 8n to the seventh power over negative 3 times the quantity of 3n to the second power. Click here to see answer by solver91311(16897)

 Question 410280: 2y - 6x = 10 solve for y, is the answer y=5+3x? Click here to see answer by stanbon(57377)

 Question 410287: Write a formula for a linear function f whose graph satisfies the conditions. Slope: 8; passing through the orgin Slope: 1.5; passing through (1, 3.1) Click here to see answer by stanbon(57377)

 Question 410294: Which property allows you to multiply real numbers in any order Click here to see answer by rfer(12666)

 Question 410377: How can you use doubling to find the product of 8 X 8? Click here to see answer by Earlsdon(6287)

 Question 410406: I dont really understand how to do the figures that are divided into squares and the saying each square unit is something Click here to see answer by Alan3354(30993)

 Question 410415: X^2-6x+9 over x^2-9 Click here to see answer by stanbon(57377)

 Question 410586: John buys a car for £1,500. He uses 50% of the money in his bank account to buy the car. How much money was in his account to start with? Click here to see answer by Earlsdon(6287)

 Question 410683: During surgery, a patient must have at least 40mg of antibiotic in his system. The amount of antibiotic present k hours after being given 100mg of this antibiotic is shown by y=100(.508)^k. After 1.3 hours, find the number of milligrams of antibiotic remaining in the patients system. (Round your answer to the nearest tenth) Can someone please help me with this question. I dont really get it at all and I need help. Thank you! Click here to see answer by stanbon(57377)
 Question 410683: During surgery, a patient must have at least 40mg of antibiotic in his system. The amount of antibiotic present k hours after being given 100mg of this antibiotic is shown by y=100(.508)^k. After 1.3 hours, find the number of milligrams of antibiotic remaining in the patients system. (Round your answer to the nearest tenth) Can someone please help me with this question. I dont really get it at all and I need help. Thank you! Click here to see answer by ewatrrr(10682)

 Question 410750: If f(x)= 8/(x^(1/2)) - 6x^(-2) - 8x What is the derivative of f(x)? Click here to see answer by stanbon(57377)

 Question 410756: If f(x)= 6sinx + 4cosx What is the derivative of f(x)? What is the derivative of f(5)? Click here to see answer by jim_thompson5910(28595)
 Question 410756: If f(x)= 6sinx + 4cosx What is the derivative of f(x)? What is the derivative of f(5)? Click here to see answer by stanbon(57377)

 Question 410796: Where can I find the rules for the different functions in algebra? Click here to see answer by richard1234(5390)

 Question 410754: If f(x)= 6sinx + 4cosx What is the derivative of f(x)? What is the derivative of f(11pi/6)? Click here to see answer by richard1234(5390)

 Question 410752: If f(x)= (t^2/3) + 2(t^3/2) What is the derivative of f(x)? Click here to see answer by richard1234(5390)

 Question 410359: Where can I go to learn all algebra 1, and have practice works sheets. Click here to see answer by richard1234(5390)

 Question 411040: How would you factor 3xsquared - 24x-27 ? Click here to see answer by edjones(7569)

 Question 411038: -16+(-2) Click here to see answer by edjones(7569)

 Question 411104: I am having difficulties with this problem. could you please help me? a factory needs 2 raw materials, say, E and F. the probability of not having an adequate supply of material E is 0.06, whereas the probability of not having an adequate supply of material F is 0.04. a study shows that the probability of a shortage of both E and F is 0.02. what is the probability of the factory being short of either material E or F? thank you!! Click here to see answer by edjones(7569)

 Question 411110: I am having problems with this question. can u please help me? determine the odds for and odds against each event for the given probability: P(H)= 1/4 thank u very much! Click here to see answer by sudhanshu_kmr(1152)

 Question 411101: could you please help me with this word problem dealing with probability? a family owns 2 cars, a 12 yr old geo and a 1 yr old prizm. on any given morning, the probabilities that the cars will start are 0.98 and 0.84 for the geo and prism, respectfully. if the probability at least one car will start Is 0.9968, what is the probability that both will start. thank you so much for your time and help! Click here to see answer by sudhanshu_kmr(1152)
 Question 411101: could you please help me with this word problem dealing with probability? a family owns 2 cars, a 12 yr old geo and a 1 yr old prizm. on any given morning, the probabilities that the cars will start are 0.98 and 0.84 for the geo and prism, respectfully. if the probability at least one car will start Is 0.9968, what is the probability that both will start. thank you so much for your time and help! Click here to see answer by edjones(7569)

 Question 411111: Its been a long time and I'm starting to return to school. How do I calculate this to simple terms? (3/4-2/3) + (1/2+1/3) Click here to see answer by ewatrrr(10682)

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