Answer: There are 155 boys .
Step-by-step explanation:
Given : There are five boys to every seven girls in an introductory biology course.
Let the number of boys be 5x and the number of girls be 7x. (i)
Since there are total 372 students enrolled in the course , it means
Divide both sides by 12 , we get
Then, the number of boys = 5x = 5(31)=155 [From (i)]
Hence, there are 155 boys .
Answer:
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Step-by-step explanation:
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Answer:
Step-by-step explanation:
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Answer:
4 years
Step-by-step explanation:
The exponent of 0.5 is 1 when t=4. So, half the original amount will be remaining when t=4.
Answer:
x=5
Step-by-step explanation:
23-3= 4x or 20
that means 4x is equal to 20
20 divided by 4 is 5
so x is equal to 5