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Question 912150: when changing 67,430,000 to scientific notation, how many places is the decimal point moved?
Click here to see answer by lwsshak3(11628)

Question 912339: The scores on a certain test are normally distributed with a mean score of 69 and a standard deviation of 2. What is the probability that a sample of 90 students will have a mean score of at least 69.2108?
Click here to see answer by ewatrrr(24785)

Question 912465: Sana is twice as old as her youngest brother. If the difference between their ages is 15 years. How old is her youngest brother?
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Question 912465: Sana is twice as old as her youngest brother. If the difference between their ages is 15 years. How old is her youngest brother?
Click here to see answer by battyb(1)

Question 909983: compute the area between y=|x| and y=x^2-6
Click here to see answer by Edwin McCravy(20054)

Question 912836: Hector and Francis spent a total of $47.50 at the mall. If Hector spent 50% more than Francis, how much did Francis spend at the mall?
Click here to see answer by ewatrrr(24785)

Question 913267: What is 18 times (5-3w)
Click here to see answer by MathLover1(20849)

Question 913640: suppose a radioactive isotope is such that one-ninth of atoms in a sample decay after eight years. Find the half life of this isotope. Round to one decimal place.
Click here to see answer by josgarithmetic(39613)

Question 913674: quadratic equation f(x)=x^2-16x+84 in vertex form
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Question 913692:
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Question 913704: Find two numbers such that their sum is 302 and their product is 189.
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Question 913772: Please help me solve this question:
The radiator in a car is filled with a solution of 65 per cent antifreeze and 35 per cent water. The manufacturer of the antifreeze suggests that for summer driving, optimal cooling of the engine is obtained with only 50 per cent antifreeze. If the capacity of the raditor is 4 liters, how much coolant (in liters) must be drained and replaced with pure water to reduce the antifreeze concentration to 50 per cent?

Click here to see answer by josgarithmetic(39613)

Question 914105: calculus-rate of change
A pulley system on a pier is used to pull boats towards the pier for docking. Suppose that a boat is being docked and has a rope attaching the boat's bow on one end and feeding through the pier's pulley system on the other end. The pulley system is 1 meter higher than the height of the boat's bow. The rope is being pulled in at a rate of 1 m/s. When the boat is 6 meters from the pier, how fast is the boat approaching the pier? (Give your answer correct to five decimal places.)

Click here to see answer by Alan3354(69443)

Question 914104: calculus-rate of change
a) A bright light on the ground illuminates a wall 12 meters away. A man walks from the light straight toward the building at a speed of 1.1 m/s. The man is 2 meters tall. When the man is 4 meters from the building, how fast is the length of his shadow on the building decreasing? (Give your answer correct to two decimal places.)
Click here to see answer by Alan3354(69443)

Question 914426: How can I spend$7 every hour, night and day. How much could you spend in a year? ( assume that there are 365 days in a year).
Click here to see answer by jim_thompson5910(35256)

Question 914530: Q1=> A card-board box contains 12 pairs each of three different types of hand gloves used by batsman in cricket. They are separated into single units of gloves and all mixed. you can not see the gloves from outside, but you can put your hands through the pigeon hole and takeout one glove at a time. what will be the minimum number of gloves one should take out to get one perfect pair of gloves to be sure?
Click here to see answer by ewatrrr(24785)

Question 915046: Is 470 a solution of the equation x over 100 = 4.75
Click here to see answer by Fombitz(32388)

Question 915510: How many positive real and negative real roots are possible in this equation: P(x)=x^2+5x+30
Click here to see answer by josgarithmetic(39613)

Question 915551: find the mean of 86,90,93,85,79, and 92
Click here to see answer by ewatrrr(24785)

Question 915771: 1)The milk and water in two vessels A and B are in the ratio 4:3 and 2:3 respectively. In what ratio,the liquids in both the vessels be mixed to obtain a new mixture in vessel C containing half milk and half water?
2)Two numbers A and B are such that the sum of 5% of A and 4% of B is 2/3rd of the sum of 6% of A and 8% of B. The ratio A:B is ?

Click here to see answer by mananth(16946)

Question 916816: I have 25 goats and want to keep to them in 6 cages in odd number.. can someon help me
Click here to see answer by Alan3354(69443)

Question 916816: I have 25 goats and want to keep to them in 6 cages in odd number.. can someon help me
Click here to see answer by ewatrrr(24785)

Question 916862: If the area of a square field is 3.95 hectares calculate the length of the side of the field in meter
Click here to see answer by Alan3354(69443)

Question 916862: If the area of a square field is 3.95 hectares calculate the length of the side of the field in meter
Click here to see answer by stanbon(75887)

Question 916861: Calculate the area of a circular washer of diameter 3.42cm if the hole in the center is 1cm diameter?
Click here to see answer by Alan3354(69443)

Question 917554: Calculate the area of a circular disc 5.86cm in diameter
Click here to see answer by rfer(16322)

Question 917838: ther are 120 students in a class. 25% of the students play volleyball. 40% of the remaining play cricket. 50% of the remaining students play football.how many students do not play any game.
Click here to see answer by josmiceli(19441)

Question 918430: Keir replaces the second equation in the system below with the second equation plus the 3 times the first equation. Which equivalent system of equations is the result?
{y=2x-7
{y=-6x+9
(Choices)
A.{y=2x-7
{y=-3
B.{y=2x-7
{y=0.5
C.{y=2x-7
{y=2
D.{y=2x-7
{y=12
Click here to see answer by stanbon(75887)

Question 918426: A cube has a total area of 150 cm^2. Find the area of each face and the length of each edge.
Click here to see answer by stanbon(75887)

Question 918442: Solve. Use the method of successive approximations.
{y=11x+32
{y=-9x+13
---------------------------
(Multiple Choice Answers:)
---------------------------
A. (-0.95,21.55)
B. (-1,21)
C. (-0.91,21.99)
D. (-0.9,22.1)
Click here to see answer by MathLover1(20849)

Question 918689: A train is traveling at the rate of 1 km every 45 seconds. At this rate how far will the train in one hour? Show and explain what you did.
Click here to see answer by ewatrrr(24785)

Question 918710: Sarah and Tom kicked a soccer ball from ground level. For Sarah it travelled 31m horizontally, it reaches it maximum height of 25m. The soccer ball lands on the ground 62m from where it was kicked. And Tom kicked it 40m horizontally; it reaches the height of 20m. The soccer ball lands on the ground 70m from where it was kicked.
a) Put this in a graph
b) Model the situation with a relation in the form y=a(x-h)^2+k
c) what is the soccer ball's height when it is 50 m from where it was kicked?

HOW DO I ANSWER THIS?
Click here to see answer by stanbon(75887)

Question 918837: please answer me in the 'simplest' way
A=36548197 B=85463729
if A*B is divided by 9 what will be the remainder?
Click here to see answer by stanbon(75887)

Question 919413: Decide if the statement is true or false (not always true). For the true statements provide a
proof and for the false statements give a counter example (an example for which the statement is not true).
Your counter examples can be a graph or an algebraic example.
Click here to see answer by richard1234(7193)

Question 918839: In a magic square there are 49 cells. they are filled using natural numbers from 6 to 54. what is the sum of numbers in a row
Click here to see answer by richard1234(7193)

Question 919771: if I have a 32 in my English class and essays are worth 60 percent of my grade if I make a 100 on my essay what will be my new grade? what if I make a 90?80?70?

Click here to see answer by ewatrrr(24785)

Question 919990:
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Question 920186: from number 1 to 10, Give me 7 digit that when added up together would equal 20. No repetition of numbers.
Click here to see answer by richard1234(7193)

Question 920373: Anyone know how to delete a question?
Click here to see answer by jim_thompson5910(35256)

Question 920373: Anyone know how to delete a question?
Click here to see answer by auble220(1)

Question 920436: Chris sells roses for $25.99 a bunch. At the end of the day he has collected $285.89. How many bunches of roses did he sell?

Click here to see answer by ewatrrr(24785)

Question 920715: solve this equation y-4x=8,y=2(2x+4) by graphing
Click here to see answer by MathLover1(20849)

Question 920689: If B is the midpoint of AC and the length of AC is 23.8, what is the length of AB
Click here to see answer by KMST(5328)

Question 920836: Sketch the graph of the function
F(x)= 5x+2

Click here to see answer by MathLover1(20849)

Question 921171: A trucker drove 72 miles to make a delivery and returned home on the same route. Because of foggy conditions, his average speed on the return trip was 25 mph less than his average speed going. If the return trip took 2 hours longer, how fast did he drive in each direction?
Click here to see answer by josgarithmetic(39613)

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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, 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