Which choice represents the best rational approximation for 20 ? A) 2.7 B) 4.5 C) 4.8 D) 5.2
1 answer:
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Answer:
Ava needs to add 50ml of cleaner.
Step-by-step explanation:
Ratio of cleaner : water = 1:7
This means that the total ratio;(water+cleaner) = 1+7 = 8
Find fraction of each item out of the total ratio of 8;
Fraction of water =
Fraction of cleaner =
Knowing the fractions, find the quantity of cleaner in <em>ml </em>out of a total of 400-ml;
Cleaner = (1/8 )*400 = 50ml
Therefore, Ava needs to add 50ml of cleaner.
<h3>Approximately 5 kilometers, below the sea's surface is the vent</h3>
<em><u>Solution:</u></em>
Given that,
The vent is 3.1 miles below the sea's surface
To find: kilometers below the sea's surface is the vent
From given,
1 kilometer = 0.6214 miles
Use the above conversion factor and convert 3.1 miles to kilometers
From above,
Therefore,
Thus, approximately 5 kilometers, below the sea's surface is the vent