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Question 252839: An airplane begins a flight with a total of 36.0 gal. of fuel stored in two separate wing tanks. During the flight, 25.0% of the fuel in one tank is used, and in the other tank, 37.5% of the fuel is used. If the total fuel used is 11.2 gal., find the amounts x and y stored in each tank.
Please help
Click here to see answer by stanbon(57282)

Question 252846: Kepler’s third law of planetary motion may be given as where T is the time for one revolution of a planet around the sun, r is its mean radius from the sun, and year/mi. Find the time for one revolution of Venus about the sun if miles.
Anyone have any idea how to solve this one? If so, would you mind showing me your steps so I can figure it out as well? Thank you kindly.
Click here to see answer by richwmiller(9135)

Question 250121: In an election between two candidates, 490 votes were cast. If the winner received 270 more votes than the loser, how many votes did the loser receive?
a.760
b.110
c.380
d.220

Click here to see answer by richwmiller(9135)

Question 252841: An airplane begins a flight with a total of 36.0 gal. of fuel stored in two separate wing tanks. During the flight, 25.0% of the fuel in one tank is used, and in the other tank, 37.5% of the fuel is used. If the total fuel used is 11.2 gal., find the amounts x and y stored in each tank.
Please help me. I am suppose to show my work but everytime I try to do this problem I get something completely wrong.
Click here to see answer by checkley77(12569)

Question 252853: you throw a basketball up in the air. the basketball's height in feet, is given by the function h=-16t^2+30t+4, where t is the time in seconds after the ball leaves your hand.find the greatest height the ball reaches.
Click here to see answer by jim_thompson5910(28536)

Question 252892: In library system with 6 branches, 60 workers are employed. If no library has fewer than 7 workers and no more than 11, what is the minimum number of workers in any 2 of the branches?
(A) 10 (B) 14 (C) 16 (D) 19 (E) 22

Click here to see answer by vleith(2825)

Question 252889: If a and b are different positive integers and 5a + b = 32, what is the sum of all possible values of a ?
(A) 6 (B) 11 (C) 15 (D) 18 (E) 21

Click here to see answer by vleith(2825)

Question 252886: If a is increased by 10% and b is decreased by 10%, the resulting numbers will be equal. What is the ratio of a to b ?
(A) 9/11 (B) 9/10 (C) 1/1 (D) 10/9 (E) 11/9
Click here to see answer by ptaylor(2048)

Question 252881: Three boys have marbles in the ratio 19 : 5 : 3. If the boy with the least number has 9 marbles, how many marbles does the boy with the greatest number have?
(A) 57 (B) 62 (C) 48 (D) 54 (E) 70

Click here to see answer by checkley77(12569)

Question 252884: {1,2,3,K 175,176,177,178 }
How many numbers in the set above have 5 as a factor but do not have 10 as a factor?
(A) 1 (B) 3 (C) 4 (D) 17 (E) 18

Click here to see answer by checkley77(12569)

Question 252897: The product of a nonzero integer and –1 has same value as the square of the integer. What is the integer?
(A) –2 (B) –1 (C) 0 (D) 1 (E) 2

Click here to see answer by richwmiller(9135)

Question 252896: The daily newspaper always follows a particular format. Each even-numbered page contains 6 articles and each odd-numbered page contains 7 articles. If today paper has 36 pages, how many articles does it contain ?
(A) 282 (B) 249 (C) 234 (D) 220 (E) 180

Click here to see answer by checkley77(12569)

Question 252944: a 90-foot tall lakefront hotel casts a shadow on the water.
how long is the shadow if a nearby 10-foot tall hoop casts a 7-foot shadow? explain.
suppose the height of the hotel was 180 feet tall.
how would the change affect your answer?explain.
Click here to see answer by drk(1908)

Question 250401: a 50 mg sample of radioactive substance decays to 34 mg after 30 days.
a. what is the half life of the sample
b. how long will it takd for there to be 2 mg of the sample left
Click here to see answer by Greenfinch(383)

Question 253004: If x^2 - y^2 = 28 and x - y = 8 what is the average of x and y?
Click here to see answer by Theo(3458)

Question 253049: If x is a positive integer, which of the following CANNOT be an integer?
(A) √(x-1) (B) √(x^2 - 1) (C) x+4 / x-2 d x+4 / x+2 (E) 5/x+1
Click here to see answer by JimboP1977(308)

Question 253045: When 25 students took a quiz, the grades they earned ranged from 2 to 10. If exactly 22 of them passed, by earned a grade of 7 or higher, what is the highest possible average the class could have earned on the quiz ?
Click here to see answer by richwmiller(9135)

Question 253047: Jason has the same number of red and of blue marbles. He puts them in two jars so that the ratios of the number of red marbles to blue marbles in jar I is 2:5 and in jar II is 9:5. If there are 84 marbles in jar I, how many are there in jar II ?
Click here to see answer by richwmiller(9135)

Question 253010: If x, y, and z are different integers less than 10, what is the greatest possible value of (x^2 - y) / z ?

Click here to see answer by JimboP1977(308)

Question 253013: If a, b, and c are positive numbers such that 3a = 4b = 5c, and if a + b = kc, what is the value of k ?
(A) 12/35 (B) 5/7 (C) 10/7 (D) 7/5 (E) 35/12
Click here to see answer by JimboP1977(308)

Question 253012: A number of people boarded a bus at the terminal. At the first stop, half of the passengers and 1 got on. At the second stop, 1/3 of the passengers on the bus got off and 1 got on. If the bus then had 15 passengers, how many were there when the bus left the terminal?
(A) 40 (B) 48 (C) 58 (D) 60 (E) 62
Click here to see answer by hokies(65)

Question 253144: a housing project has 1822 units. there are twice as many two-bedrooms units as there are one-bedroom units, and 250 fewer three bedroom units than one-bedroom units, how many of each kind of units are there?
Click here to see answer by richwmiller(9135)

Question 253157: Begin by solving the linear equation for y. This will put the equation in slope-intercet form. Then find the slope and the y-intercept of the line with this equation. -4x + y = 8
y = __
The slope is __
The y intercept is __ Type the integer
Click here to see answer by Theo(3458)

Question 253182: Which of the following has the same set of prime factors as 252?
(A) 14 (B) 36 (C) 42 (D) 56 (E) 105
Click here to see answer by palanisamy(496)

Question 253179: How many numbers from 1 to 200 inclusive are equal to the cube of an integer?
(A) 1 (B) 2 (C) 3 (D) 4 (E) 5

Click here to see answer by palanisamy(496)

Question 253172: If x^2 > x^4 and x > 0, what is one possible value for x ?
Click here to see answer by palanisamy(496)

Question 253186: In Country X there are only 3 coins, the values of which are 1, 3, and 10 pillas. What is the set of pilla values you could give someone if you have 1 coin of each type and can only give an odd number of coins?
(A) {14 } (B) { 1,3 } (C) {1,3,10 } (D) {1,3,10,14 }
(E) {1,3,4,10,11,13,14 }
Click here to see answer by richwmiller(9135)

Question 253193: Two odd integers and one even integer are multiplied together. Which of the following could be their product?
(A) 1.5 (B) 3 (C) 6 (D) 7.2 (E) 15

Click here to see answer by Alan3354(30993)

Question 253196: By how much does r - s exceed s - r ?
a (r-s)/(s-r) b 2(r-s) c -2 d 2(s-r) e -1
Click here to see answer by stanbon(57282)

Question 253195: In a group of 80 high school student, 30 study Spanish, 40 study French, and 25 study neither Spanish nor French. How many of 80 students study both Spanish and French?
(A) 18 (B) 15 (C) 20 (D) 16 (E) 13
Click here to see answer by stanbon(57282)

Question 253191: If p pencils cost c cents, how many pencils can be bought for d dollars?
A) dp/c B) 100c/dp C) 100cp/d D) 100cd/p E) 100dp/c
Click here to see answer by nerdybill(6951)

Question 253181: Which of the following equal √|64-100| ?
(A) – 6 (B) 5 (C) 6 (D) 4 (E) 10

Click here to see answer by rfadrogane(214)

Question 253178: What is the greatest common factor of 105 and 126?
(A) 3 (B) 7 (C) 9 (D) 21 (E) 35

Click here to see answer by richwmiller(9135)

Question 253169: If x is between 0 and 1, which of the following increases as x increases ?
I. 1 - x^2
II. x – 1
III. 1/x^2
(A) I and II (B) II and III (C) I and III (D) II only (E) I only
Click here to see answer by drk(1908)

Question 253155: The equation of a line is given below. Find the slope of a line that is A. parallel to the line with the given equation, and B. perpendicular to the line with the given equation. y = -3/7x - 6
A line parallel to the given line has a slope ___
A line perpendicular to the given line has a slope ___
Click here to see answer by Earlsdon(6287)

Question 253154: Use the given equations to write an equation for the line in point-slope form and in slope intercept x = -2/5 and y-intercept = 5.
Click here to see answer by drk(1908)

Question 253153: Find the slope of the line passing through the pair of points or state that the slope is undefined. Then indicate whether the line through the points rises, falls, is horizontal, or is vertical (-5,6) and (5,3)
Click here to see answer by drk(1908)

Question 253272: Help please! Is this solvable?
The sum of a fraction and its reciprocal is 13/6. What is the fraction?
Click here to see answer by drk(1908)

Question 253272: Help please! Is this solvable?
The sum of a fraction and its reciprocal is 13/6. What is the fraction?
Click here to see answer by Greenfinch(383)

Question 253272: Help please! Is this solvable?
The sum of a fraction and its reciprocal is 13/6. What is the fraction?
Click here to see answer by richwmiller(9135)

Question 253312: tamera has 2 sisters. One of the sisters is 7 years older than tamera. The other sister is 3 years younger than tamera. The product of tameras sisters ages is 24. How old is tamera?
Click here to see answer by richwmiller(9135)

Question 253434: Carla and David were candidates for a student government office. A total of 8532 votes were cast for these two candidates, and Carla won by getting 692 more votes than David. How many votes did each candidate get?
Click here to see answer by richwmiller(9135)

Question 253458: A fence 320 feet long has wooden posts each 40 feet apart How many posts are there?
(A) 8 (B) 7 (C) 10 (D) 11 (E) 9

Click here to see answer by nerdybill(6951)

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