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Question 1175047: when 11 times a certain integer is subtracted from twice the square of the integer, the result is 21 what is the integer
Click here to see answer by ikleyn(52780)

Question 1175045: when 11 times a certain integer is subtracted from twice the square of the integer, the result is 21 what is the integer
Click here to see answer by ikleyn(52780)

Question 1175049: 5 apples are to be given to a group of children of 6 boys and 2 girls. What is the probability that
a) a particular boy David will receive an apple,
b) at most one of the girls will receive an apple.
Click here to see answer by Boreal(15235)

Question 1175134: Find the midpoint between the two points
(-6.-10) , (-2,-10)
Click here to see answer by josgarithmetic(39617)

Question 1174679: A mortgage is a type of loan that is secured by a designated
piece of property. If the borrower defaults on the loan, the
lender can sell the property to recover the outstanding debt.
The following data are outstanding principal balance of home
mortgages foreclosed by the bank due to default by the
borrower during the last 3 years obtained from a random
sample of 12 foreclosed mortgages:
95,982; 81,422; 39,888; 46,836; 66,899; 69,110; 59,200; 62,331; 105,812; 55,545; 56,635; 72,123
Test the claim that the average outstanding balance of home
mortgages is less than 80,000.
a. Using a 0.05 level of significance.
b. Using a 0.10 level of significance.
c. Using a 0.01 level of significance.
Click here to see answer by Boreal(15235)

Question 1175381: The formation of Fe2O3 from iron and oxygen at 298 K is depicted below.
2Fe(s) + 3/2 O2 (g) ----> Fe2O3(s) triangleH= -824.2 kJ mol-1
Assuming the heat capacities do not change with temperature, what would the reaction enthalpy be at 657 K? CP.m is the constant-pressure molar heat capacity for a compound.
Fe=25.10 J k-1 mol-1
O2= 29.36 J k-1 mol-1
Fe2O3= 103.85 J k-1 mol-1
Click here to see answer by Solver92311(821)

Question 1175518: A bucket full of water is in the form of a frustum of a cone .the button and top radii of the frustum are 18cm and 28cm representivly and the vertical depth is 30cm if the water in the bucket is then poured into an empty cylindrical container with base radiou 20cm find the depth of water in the container

Click here to see answer by ankor@dixie-net.com(22740)

Question 1175604: . A binary operation is defined as p*q = q-3p, evaluate:
a. 2*1
b. 1*2
c. Is the operation * commutative?
d. (1*2)*3
Show solution
Click here to see answer by ikleyn(52780)

Question 1175603: 2. Given the binary operation a*b=2a2 - b, find -2*1 (show Solution)
Click here to see answer by greenestamps(13200)

Question 1175602: 1. The operation ⊙ is defined by (2a+b)⊙(a+2b)=a2+ab+b2. Find 6⊙9. (show solution)
Click here to see answer by greenestamps(13200)

Question 1175569: The time required for an elevator to lift a weight varies jointly as the weight as the weight and distance through which it is to be lifted and inversely as the power of the motor. It takes 30 seconds for a 10 horsepower motor to lift 100 pounds through 50 ft. What size of the motor is required to lift 800 pounds in 40 seconds through 40 feet?
1. What type variation is involved in this problem?
2. What previously learned concepts are needed in solving the problem?
3. What is the mathematical equation of the given problem?
4. What is the unknown in the problem?
5.How will you solve the given problem involving combined variation?
Click here to see answer by Boreal(15235)

Question 1175713: Find the value of p and q in the geometry progression,. 10,p, q, -5/4
Click here to see answer by ikleyn(52780)

Question 1175668: Translate the following mathematical statements into mathematical equations and solve the unknown
1. The amount raised during JS Promenade Night varies directly as the number of attendees and inversely as the amount of expenses used on the said event. If the amount of money raised for 250 attendees was Php5000.00 and the amount for expenses was Php4000.00 How much money will bhe raised for 300 attendees and Php6000.00 amount of expenses used during the JS Promenade Night?
2. In particular school, the number of girls varies directly as the number of boys and inversely as the number of teachers. When there were 40 girls, there were 25 teachers and 10 boys. How many boys when there were 30 girls and 60 teachers?
Click here to see answer by Boreal(15235)

Question 1175772: Inverse variation, Solve the following problem
1. Twelve people can clear a field in eighteen hours. In how many hours could nine people have cleared the same field?
Click here to see answer by ikleyn(52780)

Question 1175770: Translate the following mathematical statements into mathematical equations and solve the unknown.
1. In a particular school, the number of girls varies directly as the number of boys and inversely as the number of teachers. When there were 40 girls, there where 25 teachers and 10 boys. how many boys were there 30 girls and 60 teachers?

Click here to see answer by josgarithmetic(39617)

Question 1175777: Inverse variation, Solve following problem
1. The time t required to do a job varies inversely as the number of people p working. It takes 5 hours for 7 bricklayers to complete a certain job. How long will it take for 10 bricklayers to complete the job?
Click here to see answer by math_helper(2461)

Question 1175781: Solve the following problem
1. In a particular school, the number of girls varies directly as the number of boys and inversely as the number of teachers. When there were 40 girls, there where 25 teachers and 10 boys. how many boys were there 30 girls and 60 teachers?

Click here to see answer by Theo(13342)

Question 1175787: bria is 1 less than six times her brothers age if the sum of their ages is 62 how old is her brother
Click here to see answer by Alan3354(69443)

Question 1175804: Thomas used a 2.6-m-long ramp to move furniture into a moving van. If the bottom of the ramp is 2.0 m from the back of the moving van, what is the angle between the ramp and the ground, to the nearest degree (whole number)? It is not necessary to include the degree symbol in your answer.
Click here to see answer by Alan3354(69443)

Question 1175841: Solve the given problem.
The time required for an elevator to lift a weight varies jointly as the weight and distance through which it is to be lifted and inversely as the power of the motor. It takes 30 seconds for a 10 horsepower motor to lift 100 pounds in 40 seconds through 40 feet?
1. What type of variation is involved in this problem?
2. What previously learned concepts are needed in solving the problem?
3. What is the mathematical equation of the given problem?
4. What is the unknown in the problem?
5. How will you solve the given problem involving combined variation?
Click here to see answer by Theo(13342)

Question 1175839: Translate the following mathematical statements into mathematical equations and solve unknown.
1. The volume of gas varies directly as the temperature and inversely as the pressure. If the volume is 250 cubic centimeters when the temperature is 330°K and the pressure is 25 pounds per square centimeter, what is the volume when the temperature is 230°K and the pressure is 20 pounds per square centimeter?
Click here to see answer by Theo(13342)

Question 1175827: A computer store sells two types of laptops, an all-purpose laptop and a gaming laptop. The supplier demands that at least 150 of these laptops be sold each month. Experience shows that most consumers prefer all-purpose laptops, but some younger consumers prefer gaming laptops. The result is that the number of all-purpose laptops sold is at least twice the number of gaming laptops sold. The store pays its sales staff a $43.27 commission for each all-purpose laptop sold and a $49.73 commission for each gaming laptop sold. How many of each type of laptop should be sold to minimize commission? What is that minimum monthly commission?
All-purpose laptops:
Gaming laptops:
Commission (dollars):
Click here to see answer by Theo(13342)

Question 1175843: 1. Two things I learned in simplying zero, positive and negative exponents.
2. One thy that interest me in simplying zero, positive and negative exponents.
3. One application of what I learned from simplying zero and positive components.
Click here to see answer by Theo(13342)

Question 1175667: TTranslate the following mathematical statements into mathematical equations and solve the unknown
1. The amount raised during JS Promenade Night varies directly as the number of attendees and inversely as the amount of expenses used on the said event. If the amount of money raised for 250 attendees was Php5000.00 and the amount for expenses was Php4000.00 How much money will bhe raised for 300 attendees and Php6000.00 amount of expenses used during the JS Promenade Night?
2. In particular school, the number of girls varies directly as the number of boys and inversely as the number of teachers. When there were 40 girls, there were 25 teachers and 10 boys. How many boys when there were 30 girls and 60 teachers?
Click here to see answer by ankor@dixie-net.com(22740)

Question 1175898: Suppose a life insurance company insures the lives or 4,000 women aged 50. If the
actuarial studies show the probability that any 50-year-old woman will die in a
given year to be 0.2%, find the exact probability that the company will have to
pay 5 claims during a given year.
this is statistic by the way
Click here to see answer by Boreal(15235)

Question 1175977: Consider the relation D = 0.023×a1^0.8 ×a2^0.3 where a1 and a2 are measured quantities. If a1 = 20000±125 and a2 = 5.5±0.2, determine the uncertainty for the parameter D.
Click here to see answer by ikleyn(52780)

Question 1175986: The following resistance values of a platinum resistance thermometer were measured at a range of temperatures. Determine the measurement sensitivity of the instrument in ohms/oC.
Resistance in ohm Temperature in oC
100 45
105 46.5
110 48
115 49.5

Click here to see answer by ikleyn(52780)

Question 1176025: A furniture manufacturing company manufactures dining-room tables and chairs. A table requires 12 labor-hours for assembly and 5 labor-hours for finishing. A chair requires 9 labor-hours for assembly and 3 labor-hours for finishing. The maximum labor hours available per day for assembly and finishing are 475 and 145, respectively. Write a system of linear inequalities that represents this situation. Use the following variables: Use X for the number of tables and Y for the number of chairs manufactured in a day.
Assembly:
Finishing:

Click here to see answer by ikleyn(52780)

Question 1176023: Graph the feasible region for the follow system of inequalities by drawing a polygon around the feasible region. Click to set the corner points.
x+5y≤40
7x+5y≤70
x≥0
y≥0

Click here to see answer by Solver92311(821)

Question 1176024: Evan runs a factory that makes Blu-ray players. Each T50 takes 4 ounces of plastic and 4 ounces of metal. Each G150 requires 2 ounces of plastic and 6 ounces of metal. The factory has 140 ounces of plastic, 324 ounces of metal available, with a maximum of 16 T50 that can be built each week. If each T50 generates $12 in profit, and each G150 generates $11, how many of each of the Blu-ray players should Evan have the factory make each week to make the most profit?
T50:
G150:
Best profit:
Click here to see answer by ikleyn(52780)

Question 1176097: after senior high you are decided to push thru your education in college. since it is difficult to be working student, when you are studying in college, you wanted to start saving now while working part time, because it is much easier due to online class. if you plan to deposit savings from your work now, which is Php.20,000 and the interest rate of your bank offers 5% compounded quarterly, represent the amount of your money in (t)time.
solve the word problem of exponential function and graph it
thank you so much in advance ms,mr
Click here to see answer by Theo(13342)

Question 1176111: A test consists of only true/false questions and multiple-choice questions. The true/false questions are worth 2 points each, and multiple-choice questions are worth 6 points each. The test contains 20 questions and is worth a total of 100 points.
Set up a system of equations and find the solution to complete the following sentence: "There are ____ true/false questions and ____ multiple-choice questions".
Click here to see answer by MathLover1(20849)

Question 1176122: The table below shows the number of hamburgers and bottled waters purchased by three friends at a carnival.

Hamburgers| Bottled Water|Total Amount Spent
Brandon 5 | 3 | $31
Rodrigo 3 | 2 | $19
Samantha 1 | 4 | $
Use the information in the table to write a system of equations to fill in the missing number.
The following "let" statements will get you started:
let x = the number of (hamburgers)purchased
let x = the number of (bottled water)purchased
Click here to see answer by ikleyn(52780)

Question 1176127: The table below shows the number of hamburgers and bottled waters purchased by three friends at a carnival.
Hamburgers| Bottled Water|Total Amount Spent
Brandon 5 | 3 | $31
Rodrigo 3 | 2 | $19
Samantha 1 | 4 | $
Use the information in the table to write a system of equations to fill in the missing number.
The following "let" statements will get you started:
let x = the number of (hamburgers)purchased
let x = the number of (bottled water)purchased
Click here to see answer by ikleyn(52780)

Question 1176149: A computer store sells two types of laptops, an all-purpose laptop and a gaming laptop. The supplier demands that at least 150 of these laptops be sold each month. Experience shows that most consumers prefer all-purpose laptops, but some younger consumers prefer gaming laptops. The result is that the number of all-purpose laptops sold is at least twice the number of gaming laptops sold. The store pays its sales staff a $43.27 commission for each all-purpose laptop sold and a $49.73 commission for each gaming laptop sold. How many of each type of laptop should be sold to minimize commission? What is that minimum monthly commission?

All-purpose laptops:
Gaming laptops:
Commission (dollars):
Click here to see answer by ewatrrr(24785)

Question 1176082: A spinner on a wheel of fortune can land with an equal probability on any one of 8 regions. Three regions are YELLOW, two regions are GREEN, one region is BLUE, one region is BLACK, and one region is RED.
Outcome Gain or Loss Probability
Yellow +5 3/8
Red +2 1/8
Black +4 1/8
Blue -1 1/8
Green -2 2/8
A player wins $5 if the spinner stops on yellow.
A player wins $2 if the spinner stops on red.
A player wins $4 if the spinner stops on black.
A player loses $1 if the spinner stops on blue.
A player loses $2 if the spinner stops on green.
24. Calculate the expected value.

Click here to see answer by greenestamps(13200)

Question 1176188: MO has some sweets he can share them between his x friend in two different ways .
7 sweets each with 2 left over or 6 sweets each with 7 left over
A) form and solve an equation to workout how many friends MO is sharing his sweets between ?
B) how many sweets does Mo have?
Click here to see answer by ewatrrr(24785)

Question 1176200: The sum of all the eigenvalues of the matrix
A=[(−1 0 0),(0 1 2),(1 1 2)] is
Click here to see answer by ikleyn(52780)

Question 1176199: The product of all the eigenvalues of the matrix
A= [(1 2 1),(0 0 0),(1 0 1)] is
Click here to see answer by ikleyn(52780)

Question 1176197: Which of the following systems of linear equations has a strictly diagonally dominant coefficient matrix?
Select one:
1) 3x+y−z=1 x+3y+z=1 x−y+3z=0
2) x+3y+z=1 3x+y−z=1 x−y+3z=0
3) x+3y+z=1 x−y+3z=0 3x+y−z=1
Click here to see answer by ikleyn(52780)

Question 1176198: Let T:R3→R3 be a linear transformation defined by T(x,y,z)=(x,x+y,x+y+z). Then the matrix of linear transformation T with respect to standard basis B={(1,0,0),(0,1,0),(0,0,1)} is

Click here to see answer by ikleyn(52780)

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, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650