For this case we must find an expression to find 40% of 25. So, we make a rule of three:
25 -----------> 100%
x -------------> 40%
Where "x" represents the amount that determines 40% of 25.
![x = \frac {40 * 25} {100}\\x = 10](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%20%7B40%20%2A%2025%7D%20%7B100%7D%5C%5Cx%20%3D%2010)
40% of 25 is 10. And an expression to find it is:
![x = \frac {40 * 25} {100}](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%20%7B40%20%2A%2025%7D%20%7B100%7D)
Answer:
![x = \frac {40 * 25} {100}](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%20%7B40%20%2A%2025%7D%20%7B100%7D)
Answer: 78
Step-by-step explanation: typed it into a calculator
Answer:
70.86 degrees
Step-by-step explanation:
cos x = adjacent side / hypotenuse
= 2/6.1 = 0.32787
x = 70.86.
Answer:
OPTION D: NEITHER
Step-by-step explanation:
The given equation is: 7x - 2y = - 5
To find a solution to this, we substitute the options and compare LHS and RHS.
OPTION A: (1, 5)
LHS = 7(1) - 2(5) = 7 - 10 = -3
RHS = - 5
LHS
RHS.
So, this option is eliminated.
OPTION B: (-1, 1)
LHS = 7(-1) - 2(1) = -7 - 2 = - 9
RHS = - 5
Again, LHS
RHS.
So, this Option is eliminated as well.
OPTION C: It says both A and B. Clearly, this is eliminated as well.
Therefore, the answer is: OPTION D: NEITHER.
NOTE: This is a two variable equation. So, we need a minimum of two equations to determine the solution. Since, only one equation is given here, we use the help of options.