Solution:
Let x represent a number of calling minutes. According to the problem, we want:

now, putting the similar terms together, we obtain:

this is equivalent to:

now, solving for x, we get:

then, the correct answer for the first question is:
400 minutes is the number of minutes the two plans cost the same
now, for the second question, we can replace the above value (400 minutes) into the following equation:

so that, the correct answer for the second question is:
$55 is the cost when the two plans cost the same
Answer:
3.14
Step-by-step explanation:
I dont know if thats correct for sure. I kinda forgot what circumference is.
But how i got this was 6.28/2=3.14
Let me know if this is correct or incorrect.
Answer:
a) green ribbon is 96cm long
b) 29cm is left
Step-by-step explanation:
a) length of green ribbon = 58cm + 38cm = 96cm
b) length of green ribbon left = 96cm - 67cm = 29cm
Hey there!
We see that the first factor is 82.17, which is about 80. Then, we have 7.32, which is about 7.
80 times 7 is just doing 8 times 7 but putting a zero on the end!
So, 80 times 7 is 560, so our best estimate is A.560
Have a wonderful day!