Answer:
A) , B) , C) for
Step-by-step explanation:
A) Let be and , the latter expression is a function in implicit form and we need to turn it into its explicit form, where is the independent variable.
B) If we know that . then is:
C) If we know that , then we solve for :
Should be 270 minutes because 1500 is 250 6 times so you do 45 minutes 6 times which ends up as 270
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You add 5+7 so the total ratio is 12. then divide 48/12=4. you then multiply the given ration 5:7 by 4=20:28. 20 + 28 is 48 students which is given. so there are 28 girls and 20 boys which means there are 8 more girls than boys.