x2 + 7x - 5 = 0 has no solution in integers. To find the roots the formula is:
-b +/- sqrt(b2 - 4ac) all over 2a. In your equation a = 1, b = 7 and c = -5
= (-7 +/- sqrt(49 + 20))/2
= (-7 +/- Sqrt 69)/2
= (-7 +/- 8.307)/2
= 1.307/2 or -15.307/2
= 0.653 or -7.653, both of which check out within three-thousandths when you use them as x in the original equation
Pi to 5 decimal places is about 3.14159
3.14
When you require that degree of accuracy in the answer: no more and no less.
36.287 million kilograms (to 3 decimal places).
22/7 is fairly accurate to 2 decimal places: 3.14 and it the most commonly used one. 333/106 is accurate to the first 4 decimal places: 3.1415 355/113 is accurate to the first 6 decimal places: 3.141592
Pi to 5 decimal places is about 3.14159
It is 7.083
2.500
3.14159
3.14
x2+10x-33.33 = 0 Using the quadratic equation formula will give you two solutions which are: x = -12.63740794 to 8 decimal places. or: x = 2.63740794 to 8 decimal places
1.732 (rounded to 3 decimal places)
1/15 as a decimal is a recurring decimal: 0.066... with the 6 recurring forever; it would be usual to approximate the decimal by rounding to a number of decimal places, eg to 5 decimal places it is approx 0.06667
The approximate value of pi up to the fifth decimal place is 3.14159
2.090909090909091 (to 15 decimal places)
It is simply 2.5 equals 2.500
2x+1=5x