Mai finished her chemistry assignment in 1/2 hours. Then She completed her history assignment in 1/4 hours. How much more time d
2 answers:
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Given:
Lynee bought a bag of grapefruit, pounds of apples, and
pounds of bananas.
The total weight of her purchase was pounds.
To find:
The weight of the bag of grapefruit.
Solution:
We have,
Weight of apples = pounds.
Weight of bananas = pounds.
Total weight of her purchase = pounds.
Let x be the weight of the bag of grapefruit.
Multiply both sides by 16.
Therefore, the weight of a bag of grapefruit is pounds.
Answer:
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Explanation:
The (x-a) in the denominator causes a problem if we tried to simply directly substitute in x = a. This is because we get a division by zero error.
The trick often used for problems like this is to rationalize the numerator as shown in the steps below.
At this point, the (x-a) in the denominator has been canceled out. We can now plug in x = a to see what happens
There's not much else to say from here since we don't know the value of 'a'. So we can stop here.
Therefore,