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test/329215: A brief explanation for the meaning -the coefficient of x^2 is 6. 1 solutions Answer 236125 by Fombitz(13828)   on 2010-08-06 10:59:43 (Show Source): You can put this solution on YOUR website! The number in front of the term in the expression is the number 6.

Probability-and-statistics/329423: The probability that a cruise missile hits target on any particular mission is .80. Four cruise missiles are sent after the same target. What is the probability: A. They all hit the target? B. None hit the target? C. At least one hits the target? 1 solutions Answer 236124 by Fombitz(13828)   on 2010-08-06 10:58:15 (Show Source): You can put this solution on YOUR website! A) . . B) . . C)"At least one hits the target" is the same as saying "not all missed". P(all missed)+P(not all missed)= P(not all missed)=-P(all missed) P(not all missed)= P(at least one)=

Probability-and-statistics/329228: How do you formulate a numerical hypothesis from this statement?....Sleep deprivation has negative physical and mental affects on the body. 1 solutions Answer 236121 by Fombitz(13828)   on 2010-08-06 10:53:52 (Show Source): You can put this solution on YOUR website! You would have to generate a hypothesis using some study that you propose. As an example, patients who have less than 4 hours of sleep per night performed significantly worse on the 10 question quiz and obstacle course than those that had more than 4 hours of sleep per night. In other words, define what you mean by sleep deprivation and then describe how you'll measure what "negative physical and mental affects on the body"

Miscellaneous_Word_Problems/329421: A plane travels at 120 mph in still air. It is headed due south in a wind of 30 mph from the northeast. What is the resultant velocity of the plane? Find the magnitude and the drift angle. The drift angle is the angle between the intended line of flight and the true line of flight. 1 solutions Answer 236120 by Fombitz(13828)   on 2010-08-06 10:49:57 (Show Source): You can put this solution on YOUR website! Let's define a coordinate system where East is positive , North is positive . Without wind, the plane would travel with velocity (,). From the northeast to the southwest direction is degrees if the positive x axis is degrees. The wind velocity is (,)=(,) So the resultant velocity is (,)=(,). The magnitude of the resultant is mph The tangent of the angle of the resultant is, so then, degrees Since the plane should be traveling at due South ( degrees), the drift angle is degrees West of South

Graphs/329419: Good Morning, How do you graph and label equations. This is concerning slope, and y=mx+b. I have Math packets that i can reference to but they dont teach how to label x and y in an equation(based on y=mx+b). Tahnk you 1 solutions Answer 236118 by Fombitz(13828)   on 2010-08-06 10:39:17 (Show Source): You can put this solution on YOUR website! The x-axis is horizontal. The y-axis is vertical. Ordered pairs are presented in (x,y) format. Point (3,2) is here. Lines can be presented in slope intercept form, where is the slope and is the y-intercept. The y-intercept is where the line crosses the y-axis. As an example, here is the graph of which has a y-intercept of (0,1), . . . . . . You can graph an equation given the slope-intercept form in the following way. First plot the intercept, (0,b). Then use the slope to determine another point on the line. The slope describes the change in y divided by the change in x for each point on the line. As an example, let's graph Plot the point (0,-4) . . . . . . Next use the slope. THe slope of the equation is which means that for each 1 unit change in x, the change in y is 3 units since . So then start at the y-intercept (0,-4) and determine another point. x: y: Another point of the line would be (1,-1). You can double check by finding the slope using the two points, So then plot the point (1,-1). . . . . . . A straight line only needs two points to define it. Draw the straight line that includes the two points. . . . . . . So now you have the graph of .

Polynomials-and-rational-expressions/329309: A six-passenger plane cruises at 180 mph in calm air. If the plane flies 7 miles with the wind in the same amount of time as it flies 5 miles against the wind, then what is the wind speed? 1 solutions Answer 236116 by Fombitz(13828)   on 2010-08-06 10:24:03 (Show Source): You can put this solution on YOUR website! Rate*Time=Distance . . . 1. 2. From eq. 1, From eq. 2, Add those two results together, Substituting into eq. 1, mph

Miscellaneous_Word_Problems/329420: A carpenter is building a rectangle room with a fixed perimeter of 336 ft. What dimensions would yield the maximum area? What is the maximum area? 1 solutions Answer 236115 by Fombitz(13828)   on 2010-08-06 10:19:06 (Show Source): You can put this solution on YOUR website! DUPLICATE See Answer 236106

test/329276: (w2 ) (7x ) over 14x. 3w = ? 1 solutions Answer 236114 by Fombitz(13828)   on 2010-08-06 10:18:03 (Show Source): You can put this solution on YOUR website!

Surface-area/329415: a box is 12 inches in width,16 inches in length, and 6 inches in height.how many square inches of paper would be required to cover all sides 1 solutions Answer 236113 by Fombitz(13828)   on 2010-08-06 10:15:28 (Show Source): You can put this solution on YOUR website! sq.in.

Travel_Word_Problems/329418: how many hours will it take to complete a 63-km bike ride if you go 20km per hour the whole time? 1 solutions Answer 236112 by Fombitz(13828)   on 2010-08-06 10:12:43 (Show Source): You can put this solution on YOUR website! Rate*Time=Distance hr or 3 hr 9 min

Equations/329300: solve 3x-5y=-21 x+37=7 1 solutions Answer 236111 by Fombitz(13828)   on 2010-08-06 10:10:15 (Show Source): You can put this solution on YOUR website! 1. 2. From eq. 2, Substitute into eq. 1, Then from above,

Miscellaneous_Word_Problems/329264: If leah is 6yrs older than sue, john is 5 yrs older than leah, and the total of their aes is 41. Then how old is Sue? 1 solutions Answer 236110 by Fombitz(13828)   on 2010-08-06 10:07:44 (Show Source): You can put this solution on YOUR website! 1. 2. 3. From eq. 1, Substitute this result and eq. 2 into eq. 3, Sue is 8 years old.

Radicals/329267: A pizzeria serves 2 types of dough (wheat and white), 3 kinds of sauces (chunky tomato, marinara, and white), 2 kinds of cheeses (provolone and mozzarella). If a pizza uses one type from each category, how many different kinds of pizzas can the pizza man make? 1 solutions Answer 236109 by Fombitz(13828)   on 2010-08-06 10:05:07 (Show Source): You can put this solution on YOUR website! N=2*3*2=12 different pizza types.

real-numbers/329417: for what real number k does 3x^2-k factor as 3(x-2)(x+2) 1 solutions Answer 236108 by Fombitz(13828)   on 2010-08-06 10:04:26 (Show Source): You can put this solution on YOUR website!

Miscellaneous_Word_Problems/329411: Noah is trying to qualify for a race. A driver needs to complete 8 laps of a seven-mile track at an average speed of 105.66 mph to qualify. Noah has already completed the first three laps. His average speed so far is ninety-two mph. What must his average speed be for the rest of the race to qualify? Any help with this will be greatly appreciated Thanks!!! 1 solutions Answer 236107 by Fombitz(13828)   on 2010-08-06 10:02:57 (Show Source): You can put this solution on YOUR website! Let A-H be the speed for each of his qualifying laps. For the first 3 laps, . . . The average for all 8 laps, . . . . So then the average for the last 5 laps must be, mph

Quadratic_Equations/329416: A carpenter is building a rectangle room with a fixed perimeter of 356 ft. What dimensions would yield the maximum area? What is the maximum area? 1 solutions Answer 236106 by Fombitz(13828)   on 2010-08-06 09:57:34 (Show Source): You can put this solution on YOUR website! THe perimeter of a rectangle is, The area of a rectangle is, From the perimeter equation, Substitute into the area equation, Now the area is a function of one variable. To find the maximum, take the derivative wrt W and set it equal to zero. Then from above, The maximum area for a given perimeter is obtained using a square. sq.ft.

Equations/329281: Add 3 to half a number, and it's the same as subtracting 1 from it. What is the number? 1 solutions Answer 236105 by Fombitz(13828)   on 2010-08-06 09:53:27 (Show Source): You can put this solution on YOUR website! Let the number be N. Multiply both sides by 2.

Numeric_Fractions/329298: 4 1/8 x 1/5 1 solutions Answer 236104 by Fombitz(13828)   on 2010-08-06 09:52:06 (Show Source): You can put this solution on YOUR website!

Rational-functions/329336: can u help me solve the problem.. The directions are : graph each of the following y=4x-4 1 solutions Answer 236103 by Fombitz(13828)   on 2010-08-06 09:50:39 (Show Source): You can put this solution on YOUR website! Plot the intercept, (0,-4). . . . . . . To find another point, use the slope. Slope is change in y over change in x. So for each change in , there is a unit change in since Start at the intercept to find another point. x: y: (1,0) is another point on the line. Plot it and connect the two points with a line. . . .

Probability-and-statistics/329413: An urn contains 8 brown marbles and 11 green marbles. Two marbles are drawn from the urn without replacement. What is the probability of drawing a green marble on the first draw and a brown marble on the second draw? 1 solutions Answer 236101 by Fombitz(13828)   on 2010-08-06 09:45:54 (Show Source): You can put this solution on YOUR website! 8 Brown 11 Green 19 total First marble green, P= Second marble brown, P= P(1G,2B)=

Linear_Equations_And_Systems_Word_Problems/329272: Dry Cleaners. Claudio, a banking vice-president, took 17 neckties to Milto Cleaners. The rate for non-silk ties is $3.25 per tie and for silk ties is $3.60 per tie. His total bill was $58.75. How many silk ties did he have dry cleaned? 1 solutions Answer 236100 by Fombitz(13828)   on 2010-08-06 09:41:57 (Show Source): You can put this solution on YOUR website! Let S be the number of silk ties, N the number of non-silk ties. 1. 2. From eq. 1, Subsitute into eq. 2, From eq. 1,

logarithm/329270: Given that f(x)=x2-14 and g(x)=7x+1, find (fg)(- 1/7), if it exists. (fg)(- 1/7) = 1 solutions Answer 236099 by Fombitz(13828)   on 2010-08-06 09:38:58 (Show Source): You can put this solution on YOUR website! . . .

Exponential-and-logarithmic-functions/329339: Im not to sure if I have my answer right. this is using the power of pwoer rule. the problem is: -5y4(y5)2/15y7(y2)3 my solution was: -5y4*y10/15y7*y6 -5y6/15y13 -1/3y7 answer 1 solutions Answer 236098 by Fombitz(13828)   on 2010-08-06 09:37:21 (Show Source): You can put this solution on YOUR website! No you made a mistake at this point. The numerator should be instead of .

Equations/329342: solve 6x+z=6+y 8x-3y=6 6x-2y+4z=1 1 solutions Answer 236096 by Fombitz(13828)   on 2010-08-06 09:33:43 (Show Source): You can put this solution on YOUR website! DUPLICATE See Answer 236076

Equations/329305: solve system 6x+z=6+y 8x-3y=6 6x-2y+4z=1 1 solutions Answer 236095 by Fombitz(13828)   on 2010-08-06 09:33:01 (Show Source): You can put this solution on YOUR website! DUPLICATE See Answer 236076

Proportions/329299: 1/2=5/10 1 solutions Answer 236094 by Fombitz(13828)   on 2010-08-06 09:31:27 (Show Source): You can put this solution on YOUR website! True.

test/329294: Standard from for the equation of a cricle with center (h,k) and radius r *find the standard form of the equation of a cirlce with center (3,-2) and solution point (-1,1) 1 solutions Answer 236093 by Fombitz(13828)   on 2010-08-06 09:30:48 (Show Source): You can put this solution on YOUR website! The general equation for a circle centered at (h,k) with a radius R is: Use the center and point to find the radius, . . . . . . Not sure which form you wanted so there's both of them.

Geometric_formulas/329291: what is the surface area of a sphere with a diameter of 12 centimeters? 1 solutions Answer 236090 by Fombitz(13828)   on 2010-08-06 09:26:49 (Show Source): You can put this solution on YOUR website! Surface area of a sphere is, sq.cm.

Square-cubic-other-roots/329284: Solve by taking square roots: p^2-32=0 1 solutions Answer 236089 by Fombitz(13828)   on 2010-08-06 09:25:22 (Show Source): You can put this solution on YOUR website! Take the square root of both sides.

Square-cubic-other-roots/329290: Use the discriminant to determine whether the quadratic equation below has one real number solution, two real number solutions, or two complex number solutions: 10z^2-z+7-0 1 solutions Answer 236087 by Fombitz(13828)   on 2010-08-06 09:24:08 (Show Source): You can put this solution on YOUR website! Since the discriminant is negative, the roots are complex. . . . Graphical verification, the curve never crosses the x-axis, hence complex roots. . . .

Square-cubic-other-roots/329286: Solve by completing the square: x^2-x-42=0 1 solutions Answer 236081 by Fombitz(13828)   on 2010-08-06 09:13:05 (Show Source): You can put this solution on YOUR website! and and