D) 142 (i can't make the square root symbol)
/18 = 3/2
(3/2 + 4/2) x 2 = 14/2
Answer:
1. 4(.8)-3.5= 3.2-3.5= -0.3
2. 3(3)--5(5)-9(-1)= 9 - 25 + 9 = 18 - 25= -7
7x - 3x = 24
The 7x and the 3x are both like terms, so they can be combined. 7 - 3 is 4, so the equation turns into
4x = 24
Now, you want to get the x alone, so you divide both sides by 4 because it is the opposite of multiplication. 24 divided by 4 is 6, so
x = 6
Answer: First Option | 2 x 10^1
Reason: After doing 6.4 divided by 3.2, you get 2, and finally you subtract 10³ by 10². And after that subtraction, you get 10^1, Therefore the answer is the first option.
<em>I hope this helps, and Happy Holidays! :)</em>
