The function f(x) = 30(1.4)x gives the number of bacteria in a science experiment, where x is the number of days after the start
1 answer:
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<u><em>Answer:</em></u>
You should multiply the expression by
<u><em>Explanation:</em></u>
To rationalize any expression, you must multiply it by its conjugate. A conjugate is defined as a similar expression to the original one but with an opposite sign
<u>This means that:</u>
The conjugate of a + b would be a - b
Now, the given expression is
<u>Consider the denominator:</u>
From the above, we can conclude that the conjugate of is
<u>And, remember that</u> we need to keep the value of the expression unchanged. This means that we must multiply both the numerator and the denominator by the same value
<u>Therefore:</u>
You should multiply the expression by in order to rationalize the denominator
Hope this helps :)
<u>Answer: </u>
Chance bought a surf board for 249. Now it's on sale for 221.10 and 11.20% is the discount.
<u>Solution: </u>
Step 1:
Bought price= RS.249
Sale price=RS.221.10
Step 2:
Discount = bought price - sales price
Discount = 249 - 221.10
Discount = 27.9
Step 3:
Discount Percent =
Substitute the value for Discount which we found in step 2 in the above formulae
Discount Percent =
On simplification, we get
Discount Percent = 11.20%
Result:
Hence from the given data, we got the discount percent is 11.20%