Answer:
52
Step-by-step explanation:
these equations added together equal 180. so x+2x+24 = 180. add like terms (x+2x=3x) , subtract 24 from both sides, divide by 3 on both sides to get x by itself
The answer is 288cm
Hope this helps!
Answer:
4800 beats an hour
Step-by-step explanation:
there are 60 minutes in and hour
the heart beats 80 times per minute( that is actually a very high heart rate)
80*60=4800 per hour
Answer: aₙ = [d-(d-n)]*10
where n is the number of questions answered correctly and d is the total amount of questions.
Step-by-step explanation:
By understanding the question we can tell than she will be rewarded for each corrct answer. so, how many wrong answers she/he can have?
d-n= Total number of wrong answers
d- (d-n) = Total number of correct answers
price: 10 for each correct answer, so:
price: [d-(d-n)]*10
Therefore:
aₙ = [d-(d-n)]*10
