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Joe has a collection of nickels and dimes that is worth 6.05 If the number of dimes was doubled and the number of nickels was decreased by 10 the value of the coins would be 9.85 How many dimes?
dime = 0.10 nickle = 0.05 (1) 0.10d + 0.05n = 6.05 (2) 2x 0.10d + 0.05(n-10)=9.85 0.20d + 0.05n - 0.5 = 9.85 0.20d + 0.05n = 10.35 To make things easy, I'll multiply everything by 100 (1) 10d + 5n = 605 (2) 20d + 5n = 1035 (1) 5n = 605 - 10d n = 121 - 2d (2) 5n = 1035 - 20d n = 207 - 4d 121 - 2d = 207 - 4d 121 + 2d = 207 2d = 86 d = 43 43 Dimes
What is the answer to 150 equals d squared divided by 25 plus 4d minus 250?
There is an acronym which mathematicians use called BODMAS. It stands for:Brackets Of Division Multiplication Addition Subtraction.This tells us the order in which to perform calculations. As your typed question has not specified (by using brackets) that we must deviate from the order, we must assume that your question looks like:150 = d2 / 25 + 4d - 250.Therefored2 / 25 + 4d = 150 + 250d2 / 25 + 4d = 400d2 + 100d = 10,000d2 + 100d - 10,000 = 0We have now written this equation in the form of a quadratic.This will prove difficult to factor and so the easiest way to now solve this is to use the quadratic formula which is:For Ax2 + Bx + C = 0 thenx = (-b plus or minus (b2 - 4ac)1/2) / 2aSubstituting in our values for d2 + 100d - 10,000 = 0 gives us:d = (-100 plus or minus (1002 - 4 * 1 * -10,000)1/2 / 2 * 1d = (-100 plus or minus 50,0001/2) / 2d = 61.803 (to 3 decimal places) & -161.803(to 3 decimal places).(Note 1: x1/2 means "the square root of x".)(Note 2: Should your question, for example, look like 150 = d2 / (25 + 4d - 250) then your answer will be different, but you have not specified it does and so we must assume it is as solved above).
What is the difference between 2d 3d and 4d?
i think it is where 2d is flat 3d looks like you can touch it but you cant and 4d is where you can see it and physically touch it
What part of the expressions represents a quotient of two terms 3(4d - 8) plus (7 - d ) divided by 5?
A quotient is the result of division. (7 - d)/5 will lead to a quotient.
How do you get the perpendicular to the equation 4x-3y equals 7?
Write the equation of the given line in standard form: y = mx + c so: 3y = 4x - 7 or y = 4/3x - 7/3 The slope of the given line is 4/3. The slope of the line perpendicular to it is the negative reciprocal (change the sign and flip the fraction over). ie the perpendicular has slope -3/4 So the equation of the perpendicular is of the form y = -3/4x + d or 4y = - 3x + 4d or 3x + 4y = 4d. To evaluate the value of the constant d (or 4d) you will need one point on the perpendicular line. Substitute the coordinates of that point for x and y in the above equation and you've got 4d.
What is the answer for 3c - 4d equals 6d plus 4c?
3c - 4d = 6d + 4c Subtract 4c from both sides: -c - 4d = 6d Add 4d to both sides: -c = 10d or c = - 10d
What is the answer for 10d-6 equals 4d-15-3d?
10d - 6 = 4d - 15 - 3d10d - 6 = d - 159d = -9d=-1
What is the answer to 4d plus 7 equals -15?
4d + 7 = -15 so 4d = -22 so that d = -5.5
What is 5 plus 3 equals 4d what number is d?
d = 2
What is 5 plus 3 equals 4d?
It is an equation and the value of d is 2
What is the answer to the question 4c plus 4d equals?
Without further information, all we can do is simplify: 4c + 4d = 4(c + d)
What is 3 plus 4d equals 39?
It is a linear equation in one unknown, d.
How do you solve 8-4d equals 12?
8 - 4d = 12-4d = 4d = -1
How do you do 4d-2 equals 6b-4?
4d-2 equals 6b-4
What is 3 (4d - 8) plus (7 - d ) divided by 5?
4d÷8
4d-11 equals 2d plus 7?
4(9)-11=25 2(9)+7=25 d=9
How do you do this D plus 3D equals 240?
D + 3D = 240 4D = 240 Divide both sides of the equation by 4: D = 60
