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Question 991290: use proportions to solve
a transformer reduces or increases the voltage (V) of an alternating current based on the ratio of the coils in the input circuit (N in) to the coils in the output circuit (N out) according to the following proportion: V out/ V in = N out/ N in. A transformer is used to reduce the 120V household current to the 18V used in model train sets. If the transformer has 180 coils on the input circuit, how many coils are on the output circuit?
Click here to see answer by Theo(13342)

Question 991244: 1:X=2:6
Click here to see answer by Fombitz(32388)

Question 991555: Use proportions to solve
The faces of two similar cubes have areas in the ratio 9:4. What is the ratio of the lengths of the cubes' edges? What is the ratio of the cubes' volumes?
Click here to see answer by Timnewman(323)

Question 991552: Use proportions to solve.
A picture of a cougar is 3/4 in. long, and the legend below it says 1:80. How long is the actual cougar?
Click here to see answer by Cromlix(4381)

Question 991556: Use proportions to solve
The ratio of the edges of two similar pyramids is 10:1, and the volume of the smaller one is 5ft(cubed). find the volume of the larger one.
Click here to see answer by Alan3354(69443)

Question 991553: Use proportions to solve
The areas of two similar plane figures are in the ratio 36:25. What is the ratio of their sides? What is the ratio of their perimeters?
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Question 991598: m/4.5 =2/5 solve for my proportion

Click here to see answer by macston(5194)

Question 991598: m/4.5 =2/5 solve for my proportion

Click here to see answer by ikleyn(52776)

Question 991840: Solve each literal equation for x.
pq +2x/d = 4b
Click here to see answer by Alan3354(69443)

Question 991834: solve each literal equation for x.
pq + 2x/d = 4b
Click here to see answer by Theo(13342)

Question 991838: solve.
The population of the United States in 2010 was approximately 310 million. If 74.5 million Americans had high blood pressure in 2010, what percent of Americans (to the nearest whole percent) had high blood pressure?
Click here to see answer by Shai(25)

Question 991981: How would you work the problem, "On a recent day, 8 euros were worth $9 and 40 euros were worth $45. Enter an equation of the form y = kx to show the relationship between the number of euros and the value in dollars. Let y be the value in dollars and x be the number of euros." Thank you for the help." My mom tried to tell me a way on if y=9 then i would multiply 9 and 9 but i haven't learned how to do that yet. Can you please help me work it out?
Click here to see answer by josmiceli(19441)

Question 992737: Round Percent Change to the nearest tenth of a percent
ORIGINAL AMOUNT: CHANGE: PERCENT CHANGE: NEW AMOUNT:
1.)__________ ________ 150% increase 48
2.)__________ add 0.3 125% increase ________
Click here to see answer by Theo(13342)

Question 993025: write an equation and solve
A shirt priced at $299 was reduced 60% and then an additional 75%. Find the sale price and the total percent reduction based on the original retail price.
Click here to see answer by josgarithmetic(39616)

Question 993327: write an equation and solve
a train is traveling 62 mi/hr and has to go 372 mi. How long will it take the train to make the trip?
Click here to see answer by Theo(13342)

Question 993328: write an equation and solve
Sadie leaves Lewiston for Clarksville 388 mi away and drives 52 mi/hr. Monica leaves Clarksville for Lewiston at the same time and travels 45 mi/hr. How soon will the two meet?
Click here to see answer by ikleyn(52776)

Question 993784: 3 pounds of dough cost $15. How many pounds can you buy with $45

Click here to see answer by jim_thompson5910(35256)

Question 993780: Dan needs to get to Austin as fast as possible. The train leaves at 3:00 pm and can travel at a speed of 60 miles per hour. If Austin is 65 miles away, how long will it take Dan to get there?
Click here to see answer by rfer(16322)

Question 993986: 1)The ratio of my text books and story books is 4:3.If number of text books 28,let's find the number of story books and total numbers of book.
2)In a particular type of jewellery the ratio of gold and silver is 4:7.In such type of jewellery ornament,how many milligrams of gold has been mixed with 357 milligram of silver is to be calculated.
Click here to see answer by josgarithmetic(39616)

Question 994204: At an animal shelter the ratio of cats to dogs is 4 to 7 .If there are 27 more dogs than cats how many cats are there at the shelter
Click here to see answer by stanbon(75887)

Question 994204: At an animal shelter the ratio of cats to dogs is 4 to 7 .If there are 27 more dogs than cats how many cats are there at the shelter
Click here to see answer by josmiceli(19441)

Question 994202: At a certain company the ratio of male to female employees is 3 to 4.If there are 5 more female employees than male employees, how many male employees does the company have
Click here to see answer by stanbon(75887)

Question 994308: 45% of 80 is x% more than 24.Then value of x is
Click here to see answer by ikleyn(52776)

Question 995191: Which of the following is the better buy?
a. 67 cents for 58 ounces or 17 cents for 15 ounces
b. 29 ounces for 13 cents or 56 ounces for 27 cents
c. 17 ounces for 23 cents, 25 ounces for 34 cents, or 73 ounces for 96 cents
Click here to see answer by Boreal(15235)

Question 995208: Suppose y is directly proportional to x and that y=20 when x=4
what is the constant of proportionality k?
Click here to see answer by ankor@dixie-net.com(22740)

Question 995222: If your mechanic suggests 3 parts antifreeze to 4 parts water, and if your radiator is 14 liters, how many liters of antifreeze should you use?
Click here to see answer by fractalier(6550)

Question 995655: Set up and solve a proportion to answer the question.
The ratio of lime to sand in mortar is 3:7. How much lime must be mixed with 28 bags of sand to make mortar?
Click here to see answer by rfer(16322)

Question 995656: Solve the problem.
Y is inversely proportional to x. If y = 100 when x= 4, find y when x = 50
Click here to see answer by ankor@dixie-net.com(22740)

Question 995749: Use a proportion to set up and solve the following problem. Round your answer to the nearest tenth if necessary.
If a 7.5 ft tall petrified stump casts a 12 ft long shadow, then how tall is a statue that casts a 17.9 ft shadow?
Click here to see answer by Theo(13342)

Question 996142: A=pie r l + pie r^2 make 'l' the subject of the relation
Click here to see answer by josgarithmetic(39616)

Question 996943: the present ratio between the age of father and son is 20:1.
After 6 years the ratio will become 5:1.
find the present age of father
A,18 YEARS B, 24 YEARS C,32 YEARS D,35 YEARS
Click here to see answer by jim_thompson5910(35256)

Question 997076: ali's father was five times as old as Ali 7 1/2 years ago.After 7 1/2 years father will be twice as old as ALI .what are their present ages?
a,12 1/2,32 1/2 b,5,25 c,12,32 d,5 1/2,25 1/2
Click here to see answer by mananth(16946)

Question 997914: 3/5=12/x
Click here to see answer by EdenWolf(517)

Question 997919: 14/24=m/12
Click here to see answer by fractalier(6550)

Question 998024: The ratio of two supplementary angles is 5:13. What is the measure of each?

Click here to see answer by fractalier(6550)

Question 998308: the perimeter of a triangle is 73 inches. If two sides are of equal length and the third side is 7 inches longer than the others, find the length of the three sides
Click here to see answer by fractalier(6550)

Question 998402: Please help me solve this proportion 17 is 24% of a number, what is the number?
Click here to see answer by Alan3354(69443)

Question 999330: Derivation of T ∝ √l
Derivation of T = 2π√(l/g)
T = Time Period of a pendulum
l = length of the pendulum
g = gravity
Click here to see answer by fractalier(6550)

Question 999448: A tree which measures 36 feet in height can cast a shadow of 18 feet. What is the shadow of a free that is 20 feet ?
Click here to see answer by rfer(16322)

Question 1000530: whats the height of a baby giraffe that casts a 31.9 ft shadow
Click here to see answer by stanbon(75887)

Question 1000540: Calvin has 4 pages in 1/5 hour.The average page contains 250 words. What is calvins approximate typing speed in words per minute.
A-63
B-83
C-200
Click here to see answer by stanbon(75887)

Question 1000544: A cat ran 30 miles per hour. AT this rate, how many minutes would it take the cat to run 1.5 miles?
A-0.05
B-3
C-20
D-45
Click here to see answer by stanbon(75887)

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