Answer:
Your answers are correct.
Step-by-step explanation:
The equality will be true for odd multiples of π/4, so the last two choices will not show the expression to be <em>not</em> an identity.
Answer:
1480 just add or divide it
The output of the the equation 3+7+8=212473 i this we first multiply the 1st and the 2nd number then we multiply the 1st and the 3rd number,then we add the result of the two output and deduct with the last number (i.e 8) and then we reverse the output to get the whole answer.
Step-by-step explanation:
<u>Step 1</u>
We have been given that
3+5+6 = 153058
5+5+6 = 253094
5+4+7 = 202874
2+6+9 = 125455
3+7+8=212473
<u></u>
<u>Step 2</u>
1. Multiply 1st and 2nd number (ignore the signs of summation) and the result makes the first two digits of the resultant 6-digit number.
(i.e. 3*7=21)
<u>Step 3</u>
Multiply 1st and 3rd number, which makes the following two digits
For example :( 3*8=24)
<u>Step 4</u>
Now add the two results you got from the multiplications step 1 and 2
i.e. 21+24=45
<u>Step 5</u>
Now subtract the result obtained in step 4 from the 3rd number on the left side of the equation.
i.e. 45-8=37
<u>Step 6</u>
Now switch places of the digits, obtained in the result and there you have it, the last two digits. (i.e. 73)
<u>Step 7</u>
<u></u>
<u>so the final answer is </u>3+7+8=212473
To solve for any given number of variables, you need that number of equations to solve for all variables. When there are only two variables you only need to equations to solve for them both. You eliminate one variable at a time, order does not matter.
y-x=6 and y+x=-10
Since one equation has -x and the other +x, you can simply add the two equations together to eliminate x...
(y-x=6)+(y+x=-10)
y+y-x+x=6-10
2y=-4
y=-2, now you can use this value of y in either original equation to solve for x...
y-x=6, using y=-2 becomes:
-2-x=6
-x=8
x=-8
So the solution to the system of equations is the point (-8, -2)
You can always check by using these two values in the original equations...
y-x=6, -2--8=6, -2+8=6, 6=6
y+x=-10, -2+(-8)=-10, -2-8=-10, -10=-10