What's 1.5x4? Well let's see!
1.5x4 isn't your average 4x15=60. NO! But, you set up the problem the same way. So you would set up the problem the same way you would 4x15. It would look something like this:
1.5
x4
You have to put the decimal point inbetween the 1 and 5. So now let's do the math! 4x5=20. So we put down the 0 and carry the 2! So let's write that down:
2
1.5
x4
0
Now, 4x1=4 (obviously). Since we have our little friend Mr.Two here, we add 2. 4+2=6. So we right that down as well:
2
1.5
x4
60
But we're still not done. We didn't put that decimal point up for decoration now did we? (It would be an ugly decoration anyway) The decimal point drops RIGHT down. Staright to the bottom like a 5,000,000 ton weight. So it would look like this:
2
1.5
x4
6.0
Now, we don't need that decimal point in our answer anymore, because there is no value on the right side of our decimal point! So our answer is:
6Hope this helped! :)
2*(4*7 + 7*15 + 15*4) = 386 square units.
If you mean: x^2+15-3x then its value is 19 when x equals 4
First of all add all common factors. In par. (2x) + 15 + (2x) = 180 4x + 15 = 180 Divide 4x and 180 by 4. (4x/4) + 15 = (180/4) x + 15 = 45 Then subtract 15 to 15 and 45. x + (15-15) = (45-15) x = 30 Answer is X = 30.
It is: (15 times 7) + 4 = 109
If you mean the value of 15-2x when x is 2 then it is: 15-4 = 11
4 x 15 x 25 = 1,500.
When X = 4, 15X = 15 * X = 15 * 4 = 60
If x - (-15) = 11 then x = -4.
3/5 x 5/12 x 4/15 = 3 x 5 x 4/5 x 12 x 15= 5 x (3 x 4)/5 x 12 x 15= 1/15
[ (x - 4) / 15 ] / [(2x + 13) / 15] = (x - 4) / (2x + 13)
4 x 15 + 9 = 69
3.75 0.25 = 25/100 = 1/4 15 x 1/4 = 15/4 = 3.75
4x-15=1 15+1=16, 16/4=x=4 x=4
Expressed as a formula, this is equal to (15 + 4)/x.
x2 - 19x + 60 = x2 - 15x - 4x + 60 = x(x - 15) - 4(x - 15) = (x - 15)(x - 4)
4, 6 and 15 or 46 and 15 cos 4,6 and 15 LCM is 360 (4 x 6 x 15)
(7 - x/4) = 15 x/4 = 7 - 15 x/4 = -8 x = -32 Verification: 7 - ( -32/4) = 7 - (-8) = 7 + 8 = 15