A runner is running a 10 km race. it takes her 17.5 minutes to reach the 2.5 km mark. at that rate, how long will it take her to
1 answer:
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We need to simplify the expression:
Now, we know that we can resolve the exponents of the variables with the like terms only and we can multiply the coefficients independently:
Now,
On simplifying the above expression we get:
So the simplified form of the expression .
First Method:
Round to the closest integer, which is 1.
Round to the closest integer, which is also 1.
So 1 + 1 = 2.
Answer for method 1: 2
Second Method:
+
=
is around 1
Answer for method 2: 1
The closest answer is 1.
First off, let's convert the percentages to decimal format, so our 77% turns to 77/100 or 0.77, and our 55% turns to 55/100 or 0.55 and so on
now, the sum of both salines, must add up to the 77% mixture, let's say is "y"
so, 11 + 4 = y, and whatever the concentration level is, must also sum up to the mixture's concentration of 77%
anyway thus
solve for "x"
now, the sum of both salines, must add up to the 77% mixture, let's say is "y"
so, 11 + 4 = y, and whatever the concentration level is, must also sum up to the mixture's concentration of 77%
anyway thus
solve for "x"