Answer:
a=9
Step-by-step explanation:
To solve this proportion, we have to get the variable, a, by itself.
First, cross multiply.
6/a=18/27
Multiply the denominator of the first fraction by the numerator of the second, and the numerator of the second by the denominator of the first.
a*18=6*27
18a=162
Now, 18 and a are being multiplied. In order to get a by itself, perform the opposite of what is being done. They are being multiplied, so the opposite would be division. Divide both sides by 18.
18a/18=162/18
a=162/18
a=9
So, the proportion, with 9 substituted in for a, will be:
6/9=18/27
well i wish you the best of luck buddy
Answer:
60 minutes
Step-by-step explanation:
Time taken by Ben's family at one gas station=15 minutes
Total number of gas stations they stopped at=4
Total time spended stopping for gas= 15x4=60 minutes.
Answer: 16 questions
Step-by-step explanation:
To find how many problems the student correctly answered on the test, we can turn 80% into a fraction.
The student answered 16 questions correctly.
The value of (0.3)^4 is 0.0081.
Unless you mean 0.3*4, then it is 1.2.
