Answer:
one or two books cost 10 dollars
Step-by-step explanation:
which graph shows the relationship between the number of books x the store sold and the total amount of money y paid from the book sales?
book store selleing books for
10 dollars
x= books 1,2
y= paid 10
so u see it says someone bought books for 10 dollars
each so two books
Answer
1,3,4,2
Step-by-step explanation:
Answer:
y+-2t^2
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
A is wrong because 10 is not prime
B is wrong because still above^^
D is wrong because diagonals of a rhombus are not congruent.
So C is correct
QUESTION:
A battery was charged. When the charging began, it was 23 percent full. After 30 minutes of charging, the battery was 89 percent full. how fast did the battery charge and how long did it take?
Solution :
<u>Given</u>
- Initial amount of charge = 23%
- Amount after charge = 89%
<u>procedu</u><u>re</u>
Let the rate of charging be r .
r = (change in charge level) / (time interval) = (89% - 23%) / (30 min) = 2.2 % per minute
charge = (rate of charging)(time) + (initial charge)
100% = r*t + 23%
100% = (2.2 %/min)t + 23%
Solve for t and get
t = [(100 - 23) / 2.2]
Answer = 35 min