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0.9x+0.5 = 0.4x+2.5 0.9x-0.4x = 2.5-0.5 0.5x = 2 Divide both sides of the equation by 0.5 to find the value of x: x = 4
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What number can you multiply by 5 then minus sixty and it equals the number you started with?
Algebraically, you're asking to solve for x: 5x - 60 = x4x - 60 = 04x = 60x = 15Let's test just to be sure:15*5 = 7575 - 60 = 15It works, so 15 is the magic number.
How would you find x and y intercept in the problem 4x minus 3y minus 12 equals 0?
First put in this form. Y = mX + c4X - 3Y - 12 = 04X - 3Y = - 12- 3Y = - 4X - 12Y = (4/3)X + 4===========Points are,(- 3, 0 ) and ( 0, 4 )You do not have the full question yet since this question has infinite answers.4x - 3y - 12 = 04x = 3y + 12If the question only gives this one equation, you can substitute any number into x to get a corresponding answer.Let's say x = 14(1) = 3y - 124 = 3y - 1216 = 3yy = 5.33 (3 sig fig)Suppose there is another part to this statement: 4x - 3y - 12 = 0 an 3x = 2y3x = 2yx = 2y/3 (choose either of the equations [3x = 2y, since it is easier] and separate either of the letters ["x"] from the other things [other letters and any numbers]Substitute x = 2y/3 into 4x = 3y + 124 (2y/3) = 3y + 128y/3 - 3y = 12-1y/3 = 12-y = 36y = -36Substitute y = -36 into 3x = 2y (easier)3x = 2(-36)3x = -72x = -24The interception point is (-24,-36). [note that 2 straights lines will either intercept on 1 point (most cases), never (parallel lines with same gradient) or infinite times (same line)]
What is x - 2y 0 and 4x - 3y 15?
I assume you mean,X - 2Y = 04X - 3Y = 15this is set up for substitution, use ( X - 2Y = 0)X - 2Y = 0X = 2Y----------substitute into ( 4X - 3Y = 15 ) to find Y4(2Y) - 3Y = 158Y - 3Y = 155Y = 15Y = 3---------find X in ( X - 2Y = 0 )X - 2(3) = 0X - 6 = 0X = 6---------------check in both original equation6 - 2(3) = 06 - 6 = 00 = 0-----------checks4(6) - 3(3) = 1524 - 9 = 1515 = 15----------------both check and are consistent(6, 3) is the solution set
What is y equals .04x?
well y=.04x is most likey a linear equation with the .04 as the slope of the line and there is no y intercept or the y intercept is 0
Solve the following system of equations What is the value of y when x - y - z equals 0 3x plus y - z equals 2 x plus 2y plus z equals 0?
x = -1, y = 2, z = -3.x - y - z = 03x + y - z = 2x + 2y + z = 0Adding equation 3 to equations 1 and 2 gives new equations 1 & 2:2x + y = 04x + 3y = 2Doubling the [new] equation 1 and subtracting from the [new] equation 2 gives:y = 2Substituting back into [new] equation 1 gives:2x + 2 = 0 ==> x = -1Substituting back into the original equation 1 gives:-1 - 2 - z = 0 ==> z = -3Check by substituting back into original equations:3x + y - z = 3(-1) + (2) - (-3) = -3 + 2 + 3 = 2x + 2y + z = (-1) + 2(2) + (-3) = -1 + 4 - 3 = 0
Solving by subsitution x - 2y equals 0 4x - 3y equals 15?
x - 2y = 04x - 3y = 15From the first equation, x = 2y.SUBSTITUTING this value of x in the second equation,4*(2y) - 3y = 15 ie 8y - 3y = 15 or 5y = 15 so that y = 3and then, x = 2y gives x = 2*3 = 6Answer: x = 6, y = 3
What number can you multiply by 5 then minus sixty and it equals the number you started with?
Algebraically, you're asking to solve for x: 5x - 60 = x4x - 60 = 04x = 60x = 15Let's test just to be sure:15*5 = 7575 - 60 = 15It works, so 15 is the magic number.
How do calcullate ms hollow pipe weight?
3.14/4x.04x.04xlenghtxdensity
What are the steps to solving an incomplete quadratic equation?
There are two kinds of incomplete quadratic equations:1) ax2+bx=0 (e.g. 4x2+2x=0)2) ax2+c=0 (e.g. 5x2-125=0)And the ways to solve them are as follows:Type 1) For example, 4x2+2x=0.You take out x (and a number multiplying it, if possible:)2x(2x+1)=0In order for the equation to be correct, then either the outcome of the brackets (2x+1) or the number multiplying them (2x) needs to be zero:2x+1=02x=-1x1=-0.52x=0x2=0So the two solutions are -0.5 and 0. This also works if you take out only x:x(4x+2)=04x+2=04x=-2x1=-0.5x2=0Type 2) For example, 5x2-125=0. This type of incomplete quadratic equation can be solved like a regular equation, as follows:5x2-125=05x2=125x2=25x=±5 (x1=5, x2=-5)
If 5 liters of a 4 percent silver iodide solution must be mixed with a 10 percent solution to get a 6 percent solution How many liters of the 10 percent solution are needed?
2.5 is the answer....5(.04)+.10(x)= .06(5+x).2+.1x=.3+.06x.04x=.1or 4x=10 so x =2.5
How would you find x and y intercept in the problem 4x minus 3y minus 12 equals 0?
First put in this form. Y = mX + c4X - 3Y - 12 = 04X - 3Y = - 12- 3Y = - 4X - 12Y = (4/3)X + 4===========Points are,(- 3, 0 ) and ( 0, 4 )You do not have the full question yet since this question has infinite answers.4x - 3y - 12 = 04x = 3y + 12If the question only gives this one equation, you can substitute any number into x to get a corresponding answer.Let's say x = 14(1) = 3y - 124 = 3y - 1216 = 3yy = 5.33 (3 sig fig)Suppose there is another part to this statement: 4x - 3y - 12 = 0 an 3x = 2y3x = 2yx = 2y/3 (choose either of the equations [3x = 2y, since it is easier] and separate either of the letters ["x"] from the other things [other letters and any numbers]Substitute x = 2y/3 into 4x = 3y + 124 (2y/3) = 3y + 128y/3 - 3y = 12-1y/3 = 12-y = 36y = -36Substitute y = -36 into 3x = 2y (easier)3x = 2(-36)3x = -72x = -24The interception point is (-24,-36). [note that 2 straights lines will either intercept on 1 point (most cases), never (parallel lines with same gradient) or infinite times (same line)]
What is 2400 4 percent of?
2400 / 10 = 24 (1%)24 x 4 = 96 (4%)
Where in North America is area code 704?
Area code 704 is in North Carolina; specifically, metropolitan Charlotte and the cities of Gastonia and Concord. Area code 980 is an overlay on the exact same communities.
What is x - 2y 0 and 4x - 3y 15?
I assume you mean,X - 2Y = 04X - 3Y = 15this is set up for substitution, use ( X - 2Y = 0)X - 2Y = 0X = 2Y----------substitute into ( 4X - 3Y = 15 ) to find Y4(2Y) - 3Y = 158Y - 3Y = 155Y = 15Y = 3---------find X in ( X - 2Y = 0 )X - 2(3) = 0X - 6 = 0X = 6---------------check in both original equation6 - 2(3) = 06 - 6 = 00 = 0-----------checks4(6) - 3(3) = 1524 - 9 = 1515 = 15----------------both check and are consistent(6, 3) is the solution set
