Answer:
x = -3
Step-by-step explanation:
1. 1.8 - 3.7x = -4.2x + 0.3
<u>-0.3 -0.3</u> (subtract -0.3 from both sides)
2. 1.5 - 3.7x = -4.2x
<u> +3.7x +3.7x</u> (add 3.7x to both sides)
3. <u> 1.5 </u> = <u>-0.5x</u>
-0.5 -0.5 (divide by -0.5 on both sides)
-3 = x or x = -3
Answer:
Sue must score 94 on the final test to earn a B.
Step-by-step explanation:
There are five tests in total.
Sue's average on the first four tests is 84.
If after the final test, she scores X, she will have a B on average of five tests.
We have the following equation:
86 = (4 × 84 + X)/5
<=> X = 5 × 86 - 4 × 84
=> X = 94
36/3+3=15
I agree, none of them.
None of those answers are right because the actual answer is 1.
Add 17 and 12 which equals 29. (17+12=29)
We already know there is 30 students so you just subtract 30 and 39 which equals 1. (30-29=1)