Answer:
a = b + t
or
a = 18 + t
Step-by-step explanation:
This can be put into a simple expression:
Let a be Anthony's cards and b be Brittany's cards:
A = b + t
or
A = 18 + t
Hope this helps!
Step-by-step explanation:
a)12-7x=15
I think its HELP
Answer:
Let Greg's height be = x
According to the question;
So, Greg's height (x) = 15 years
Answer: (16/25)
Step-by-step explanation: That's -(4/5) x -(4/5) = (16/25). It's that answer because a negative times a negative equals a positive. The exponent in the problem is telling you to multiply -4/5 times itself 2 times.
10 students averaged 80, so the sum of their scores was (10 x 80) = 800
20 students averaged 89, so the sum of their scores was (20 x 89) = 1,780
All together, the sum of all 30 scores was (800 + 1,780) = 2,580
30 students totaled 2,580, so their average was (2,580 / 30) = <em> 86</em> .
