Well 88 is 88% and 98% but if you round 88 would turn into 90% and 98 would become 100%. and 100% minus 90% is 10% so the broadcaster had about a 10% error.
I am sure not 100% right because i don't quite know percents yet.
So good luck.
Mark me the Brainiest please.
Tessadog Out
X= 21
-rose (https://cherry-bomb03.webnode.com/)
Answer:
C, D, F
Step-by-step explanation:
She walked 12 miles. Then she walked 1/4 that distance. "That distance" is 12 miles.
That means she walked 12 miles plus 1/4 of 12 miles.
She walked
12 + 1/4 * 12
You can factor out 12 from the expression above, and write it as
12(1 + 1/4)
Now you can do the addition in parentheses.
12(1 + 1/4) = 12(4/4 + 1/4) = 12(5/4)
Answer:
C, D, F
Answer:The faster person will do the job in 7.53hours
Step-by-step explanation:
Let t=faster person
Let t-1= the other person
The job to be done =1
Each person will do a fraction of the job
4/t+4/t-1=1
Multiply both sides wit t(t-1)
4(t+1)+4t=t(t-1)
4t+4+4t=t^2+t
8t+4=t^2+t
0=t^2+t-8t-4
t^2-7t-4=0
Use Almighty formular to solve d quadratic equation
X=-b+- rootb^2-4ac/2a
X=t,a=1,b=-7 c=4
Substituting the values you get:
t=-7 +- root 49+16/2
t=-7 +- root 65/2
t=7 +8.06/2=15.06/2
t=7.53 hours
