18. -500 + 250 = -250
19. -550 - 300 = - 850
20. 116 - (-50) = 116 + 50 = 166
21. 2500 + 1800 - 2200 = 2100
3m and 4m
Since 3m and 4m are attached to the same variable, they are like terms, since they can appropriately be combined.
1st acc = 6/14 chance
<span>2nd acc = 5/13 </span>
<span>3rd acc = 4/12 </span>
<span>6/14 * 5/13 * 4/12 = 0.0549450549 </span>
<span>round to 3 decimal places ==> 0.055
Please put me on brainlest if its correct! Thank you!</span>
<span> x/3-2=7
---------------------
SImplify
1/3x - 2 = 7
--------------------------
add 2 to each side
1/3x - </span><span><span>2 </span>+ 2 </span>= <span>7 + <span>2
1/3x = 9
------------------------------
Multiply each side by 3
3 * (1/3x) = 3 * 9
x = 27</span></span>
Answer:
Step-by-step explanation:
Given
Required
Choose equivalent expressions
Choosing the first answer:
Split expressions
Apply laws of indices: 
Apply laws of indices:
Hence:
Choosing the second:
Apply law of indices: 
So,
Apply law of indices:
So:
