Suppose KLMN ~ PQRS. Find the value of x.
1 answer:
Complete question is attached.
Answer:
B) 8
Step-by-step explanation:
In this question, KLMN ~ PQRS. This means they are similar shapes.
From the image, we could denote that:
KL ~ PQ
LM ~ QR
Given that:
KL = 12
PQ = 30
QR = 20
LM = x
To find x, let's use tge expression:
Cross multiplying, we have:
12 * 20 = 30x
240 = 30x
To find x, let's divide both sides by 30.
8 = x
x = 8
The correct option is option B.
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Answer:
The amount of the contaminant removed during the first three hours will be 48.8 pounds.
Step-by-step explanation:
There, in a large tank of water, are initially 100 pounds of a contaminant.
Also given that the cleaning method removes 20% of the remaining contaminant each hour.
So, after the first hour, the amount of the contaminant will remain by pounds.
Now, after the second hour, the amount of the contaminant will remain by
pounds.
Finally, after the third hour, the amount of the contaminant will remain by pounds.
Therefore, the amount of the contaminant removed during the first three hours will be (100 - 51.2) = 48.8 pounds. (Answer)