Answer:
Step-by-step explanation:
Given
To find
Solution
- P(A or B) = P(A) + P(B)
- P(A or B) = 3/10 + 2/5 = 3/10 + 4/10 = 7/10
Answer:
250 cards
Step-by-step explanation:
Let the number of baseball cards he originally had be x.
He sold 20% of the baseball cards after week one. This means that after week one the number of cards he had was:
x - (20/100 * x) = x - 0.2x = 0.8x
During week two he bought 20% more cards than he had after week one. This means that after week two, he had:
0.8x + (20/100 * 0.8x)
= 0.8x + (0.2 * 0.8x)
= 0.8x + 0.16x = 0.96x
He now has 10 fewer cards. This means that:
x - 10 = 0.96x
Collecting like terms:
x - 0.96x = 10
0.04x = 10
=> x = 10/0.04 = 250
He had 250 cards originally.
I= interest
p= principal= $200
r= rate= 7%
t= time= 1 year
SIMPLE INTEREST FORMULA
i= prt
i= ($200)(7%)(1)
convert 7% to decimal (7% ÷ 100)
i= (200)(0.07)(1)
multiply
i= $14.00
ANSWER: $14.00 is the interest on a $200 principal at a rate of 7% for a period of 1 year.
Hope this helps! :)
How I’d do it:
5/6 three times makes 15/6. Made into a mixed fraction is 2 3/6, which in its simplest form is 2 1/2.
When converted to ounces, assuming that 6/6 is one complete ounce, then you get 2.5 ounces.
The total weight she picked up is 2.5 ounces.
Answer:
30
Step-by-step explanation:
30 is the smallest number that all of the numbers divide into evenly.
30 ÷ 2 = 15
30 ÷ 10 = 3
30 ÷ 6 = 5
hope this helped!