Answer:
20.25
Step-by-step explanation:
8 x 1.75 = 14
5 x 1.25 = 6.25
Given that 4000 items are checked in one month, let the number of detective items be represented as y.
Quality control finds on average that 0.026% of the items in the factory are detective. This implies that
When 4000 items are checked, we have the number of detective items to be evaluated as
Hence, the number of detective items is 1.04.
You’d set up a proportion. I did 25/15=7x-40/18.
Then you would cross multiply to get 15(7x-40)=450
Distribute the 15.
105x-600=450
Add 600 to both sides, so the -600 cancels out.
Then you’re left with 105x=1050
Divide both sides by 105 and you get x=10
Answer:
t = 9w
Step-by-step explanation:
Since you want to find the total amount of dollars (t), you will set the equation equal to that variable.
t = ____
Now, the question is asking for to find the total amount of money in a certain amount of weeks, so we know we'll calculate the total through the rate of <em>per week</em>.
t = _ * w
The last step is simply to find the rate of a bus pass <em>per week</em>. A bus pass costs $9 <em>every week</em>. So to find the total (t), you just have to multiply 9 by the number of weeks (w).
t = 9w
Hope this helps!