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Question 114835: A prediction equation for the price of a diamond (y) of a particular carat size (x) is
y’ = - 6158 + 12201x. What is the predicted price of a diamond weighing 1.5 carats?

Click here to see answer by checkley71(8405)

Question 115301: One measure used to describe a data set is the range. The range of a data set is given by the difference between the max and the min of the set. The range describes the variability of the data (that is, how much do the numbers vary)
Range = max-min
Find the range of each set of numbers
7, 7, 5, 4, 1, 9, 8, 8, 8, 5, 2
Click here to see answer by jim_thompson5910(13794)

Question 116249: Tickets for a play at the community theater cost $12 for an adult and $8 for a child. If 130 tickets were sold and the total receipts were $1160, how many of each type of ticket were sold?
Click here to see answer by stanbon(26280)

Question 116432: can someone simplify this problem?
(5a^3-4a+8) - (7a^3+a^2-3)
Click here to see answer by slippinghalo3(3)

Question 116672: Ok, I am in 7th grade pre-algebra but whenever my teacher talks I don't understand half of what he is saying. I have looked on numerous web pages, and I came across this one. My question is:
3x (divided by) 2-2=7 This may seem easy but I have no idea what to do. Please help as much as you can. Thank you anyway!
~Student
Click here to see answer by MathLover1(1183)

Question 116699: ok i am in Algebra A and i am doing weighted averages. the problem is: An alloy of metals is 25% copper.Another alloy is 50% copper. how much of each alloy should be used to make 1000 grams of an alloy that is 45% copper?
Click here to see answer by stanbon(26280)

Question 116730This question is from textbook algebra1
: An express train travels 90 kilometers per hour from smallville to megatown. A local train takes 2.5 hours longer to travel thensame distance at 50 kilometers per hour. how far apart are Smallville and MegatowmThis question is from textbook algebra1

Click here to see answer by checkley71(8405)

Question 116733: ok i am in Algebra A and i am doing weighted averages. here is the problem: An Airplane flies 1000 miles due east in 2 hours and 1000 miles due south in 3 hours.what is the average speed of the airplane.
Click here to see answer by checkley71(8405)

Question 116757This question is from textbook algebra
: how many grams of sugar must be added to 60 grams of a solution that is 32% sugar to obtain a solution that is 50% sugarThis question is from textbook algebra

Click here to see answer by Fombitz(2113)

Question 116729This question is from textbook algebra1
: An express train travels 90 kilometers per hour from smallville to megatown. A local train takes 2.5 hours longer to travel thensame distance at 50 kilometers per hour. how far apart are Smallville and MegatowmThis question is from textbook algebra1

Click here to see answer by ankor@dixie-net.com(6693)

Question 117032: What is the x coordinate in the standard ordered pair at which the two lines
y=2x+6 and y=3x+4 intersect?
Click here to see answer by checkley71(8405)

Question 116767This question is from textbook algerba1
: how many grams of sugar must be added to 60 grams of a solution that is 32% sugar to obtain a solution that is 50% sugar? This question is from textbook algerba1

Click here to see answer by ankor@dixie-net.com(6693)

Question 117072: find the standard deviation of
75 77 78 78 79 80 80 81 84 85 87 89 90 91

HELP
Click here to see answer by jim_thompson5910(13794)

Question 117396: What expressions represents the product of 3 less than twice x and 2 more than the quantity 3 times x? Please show me how to figure this out.
Thanks,
Joyce Moore
Click here to see answer by josmiceli(3009)

Question 117741: Which of the numbers 18, 48, 452, 486 and 844 are divisible by 4?
Please help. My mind is NOT working today..lol Thank you so much.
Click here to see answer by jim_thompson5910(13794)

Question 117741: Which of the numbers 18, 48, 452, 486 and 844 are divisible by 4?
Please help. My mind is NOT working today..lol Thank you so much.
Click here to see answer by Edwin McCravy(2922)

Question 118025: find the mean -6,-2,1,9,11,17
Click here to see answer by stanbon(26280)

Question 118130: The average of the intergers from 200 to 400, inclusive, is how much greater than the average of the integers from 50 to 100, inclusive?
Click here to see answer by stanbon(26280)

Question 119295: In the algebraic slope formula; y=mx+b why is "m" used to identify the slope and "b" the y-intercept?
Click here to see answer by stanbon(26280)

Question 120763: Jill and Jack play basketball. In the first game, Jill had a foul shot average of 0.60(she made 12 or 20 shots), and Jack had a foul shot average of 0.50(he made 8 out of 10 shots). In the second game, Jill had a foul shot average of 0.80(she made 8 out of 10 shots), and Jack had a foul shot average of 0.75(he made 15 out of 20 shots. Now who do you think has the better average?
Compute the averages for both games based on 30 shots for each player.
Compare results for the two individual games to the overall average and discuss how this is possible.
I just need some help on setting up the problem.
Thanks!

Click here to see answer by stanbon(26280)

Question 121409:
Write the equation of the line which has y-intercept (0, 5) and is perpendicular to the line with equation y = –3x + 1.
Click here to see answer by checkley71(8405)

Question 121901: rex scores of 85,92,87,88 and 91 on first five exams. what score must he make on the sixth exam to have an avg of 90 or better for all six exams?
Click here to see answer by jainenderkapoor(60)

Question 122782This question is from textbook Algebra 1/2

: I need help on overall average. This doesn't make any sense to me! Here it is: Joe tossed 4 into the pot. Their average weight was 6 lb. Then he tossed 5 more whose average weight was 7 lb. Then he threw in a big one. The overall average weight of all of them is 7 lb. What did the big one weigh?This question is from textbook Algebra 1/2

Click here to see answer by stanbon(26280)

Question 123207: Frank got scores of 75, 83, and 79 on his first three tests. What score does he need to make on his next test to have an average of 80?
Click here to see answer by bucky(1732)

Question 108736: Find the mean and the median.
–7, –1, 3, 9, 10, 16

Click here to see answer by apachemexican1(56)

Question 122696: Find the mean.
-9,-7,3,5,6,20
Click here to see answer by apachemexican1(56)

Question 128001: A train leaves a city heading west and travels at 50 miles per hour. Three hours later, a second train leaves from the same place and travels in the same direction at 65 miles per hour. How long will it take for the second train to overtake the first train?
Click here to see answer by josmiceli(3009)

Question 129656: I am the neighbor of the kid next door...could you remind me how to do this so I can help him do his math? :-0
a+(a*2)=27
Click here to see answer by checkley71(8405)

Question 129995: The sum of two consecutive integers is -287. Find the larger integer.
Click here to see answer by checkley71(8405)

Question 129998: {q, s, u, v, w, x, y, z} ∩ {s} find the indicated intersection?
Click here to see answer by stanbon(26280)

Question 129997: -27 ≤ -4c + 5 < -3
Click here to see answer by jim_thompson5910(13794)

Question 130778: Determining a Necessary Grade: A mean average of 80 or greater for five exams is needed for a final grade of B. Jorge Rivera's first four exam grades are 73, 69, 85, and 80. What grade does Jorge need on the fifth exam to get a B in the course?
Click here to see answer by checkley71(8405)

Question 131588: Please help me solve this Open-ended problem:
At one point early this season, Clipper was batting .500. After getting 3 hits in 10 at-bats in his next games, his average dropped to .333.
B. How many hits and at-bats must he have altogether.

Click here to see answer by edjones(3296)

Question 133234: Adam tried to compute the average of his 7 test scores. He mistakenly divided the correct sum of all of his test scores by 6, which yielded 84. What is Adam's correct average test score?
Click here to see answer by stanbon(26280)

Question 133418: Adam tried to compute the average of his 7 test scores. He mistakenly divided the correct sum of all of his tests by 6, which yielded 84. What is Adams correct average test score?
Click here to see answer by solver91311(5072)

Question 133419: A total of 50 juniors and seniors took a math test. The 35 juniors attained an average of 80 while the 15 seniors attained a 70. What was the average score for all 50 students who took the test?
Click here to see answer by solver91311(5072)

Question 134604: 2/3 of 48
Click here to see answer by vleith(1977)

Question 134928: Find the sum of the measures of the interior angles of a convex polygon with the given number of sides.
Number of sides --> 6
Help with this equation would be appreciated.
Click here to see answer by vleith(1977)

Question 135028: you are deciding between two cars with different engines and want the bigger of the two. One engine displaces 350 cubic inches. The other displaces 5,500 cubic centimeters. By how many cubic centimeters is the bigger engine larger than the smaller one?
Click here to see answer by vleith(1977)

Question 135026: you are deciding between two cars with different engines and want the bigger of the two. One engine displaces 350 cubic inches. The other displaces 5,500 cubic centimeters. By how many cubic centimeters is the bigger engine larger than the smaller one?
Click here to see answer by checkley77(7060)

Question 135848: Tell wether the ordered pair is a solution of the linear system.
(-2,15);
y= -3x + 9
y= 5x + 25

Any straightfoward and correct help would be much obliged:)
Click here to see answer by stanbon(26280)

Question 135851: Determine wether the triangle with the given side lenghts is a right triangle.
A computer monitor screen is measured by the length of a diagonal.A 19-inch monitor screen is about 12 inches high. About how wide is the screen to the nearest inch.

Any straightfoward and correct help would be much obliged:)
Click here to see answer by solver91311(5072)

Question 136520: in math class your average grade for the first three tests is 81. You want to raise your final average to 85. What grade do you need on the final, the only remaing test in term?
Click here to see answer by scott8148(3382)

Question 136754: Seven men agree with eighth man to subscribe a sum of money to a fund. The first seven are to subscribe Rs.50 each and the eighth man Rs. 70 more than the average of all the eight. Find how much did the eighth man subscribe?
Click here to see answer by ankor@dixie-net.com(6693)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765