Answer:
17.7
Step-by-step explanation:
The tenths place is the very first value after the decimal. The number 17.68694 rounds up to 17.7, because .68 is closer to .7 than it is to .6.
The word 'difference' indicates the use of subtraction in a Mathematical sum
The error is that the sum could be 15 - 5y instead of 5y - 15
A subtraction sum does not have the commutative properties, meaning that we cannot do the sum in any order.
A sum 15 - 5y will give a different result with the sum 5y - 15 for the same value of y.
Answer:<em> (-2.1)(3p)+(-2.1)(-5)</em>
Step-by-step explanation:
<em>Due to the -2.1 being on the outside of the parenthesis' you will distribute it into the (3p-5)</em>
<em>The first part will be (-2.1)(3p)</em>
<em>The next part will be +(-2.1)-5)</em>
<em>This is "+" due to a negative being multiplied by a negative.</em>
<em>(-2.1)(3p)+(-2.1)(-5)</em>
Hello,
as sin² x -cos² x=cos 2x
The equation is
cos 2x=0
==>2x=π/2+kπ
==>x=π/4+kπ/2 with k integer
