Fourth test mark should be 86
85 + 82 + 75 + 86 = 328
328 divide by 4 (as there are four tests) = 82
If you look at the picture, you set it up as part over whole is equal to percent over 100. then you just multiply across.
Answer:
u = -4(w - 1) + 5
Step-by-step explanation:
u - 5 = -4(w - 1)
add 5 to both sides
u = -4(w - 1) + 5
<span>
One painter can finish a certain job 5 hours before another painter who is doing the same job. When they work together they can finish this job in 6 hours. How long does it take for each painter to do the job by himself? 6 hours</span>
