Answer:
100(1/a + 1/b)
Step-by-step explanation:
Machine A takes a hours to make 100 bolts
- Then machine A makes 100/a bolts in one hour
Machine B takes b hours to make 100 bolts
- Then machine B makes 100/b bolts in one hour
<u>Two machines will make:</u>
- 100/a + 100/b = 100(1/a + 1/b)
bolts in one hour
Answer:
1) y = 2x-2
2) y = -6/5+1
Step-by-step explanation:
Answer:
4(5x+4) is the answer
Step-by-step explanation:
..............
Answer=153.9 (when you round to the nearest tenth)
Area=π r²
Area=π 7²
Area=π*49
Area=<span>153.938040026
</span>round to the nearest tenth...
Area=153.9
9514 1404 393
Answer:
A: (b) 320 is what percent of 400
B: 80%
Step-by-step explanation:
<u>Part A</u>:
This is a reading comprehension question. You are told that ...
$320 is the amount needed
$400 is the amount earned
and you are asked to find ...
what percent of the amount earned is the amount needed?
The question can be rephrased as ...
the amount needed is what percent of the amount earned?
Filling in the amounts you are told, the rephrased question becomes ...
$320 is what percent of $400 . . . . . matches choice (b)
__
<u>Part B</u>:
If we let x represent "what percent", then we can write the above question as ...
320 = x · 400
Dividing by 400 gives ...
320/400 = x = 0.80 = 80%
That is, 320 is 80% of 400.
