3x+5x= 8x
I hope this helps !!
Answer:
840 ( D )
Step-by-step explanation:
GIVEN DIGITS : 1,2,3,4,5,6,7,8
Number of odd numbers = 4
Number of even numbers = 4
therefore the number of odd numbers with 4 different digits can be formed by the same way the number of even numbers ( without repetition )
Hence the number of ways odd numbers with 4 different digits = Total number of ways of forming 4 digit numbers / 2
8*7*6*5 = 1680 / 2 = 840 ways
Step-by-step explanation:
Let, 1st number be x and 2nd number be y
Then,
equation 1
x = 16+y
equation 2
x + y = 120
or, y = 120 - x
now,
x = 16 + y
or, x= 16 + 120 - x (putting the value of y from equation 2 )
or, x + x = 136
or, 2x =136
or, x= 136/2
or, x =68
Then,
y = 120-x
or, y= 120- 68 (putting the value of x)
or, y= 52
Hence, the two numbers are 68 and 52.
This is material out of the lesson of basic mathematics of compound probability.
To solve this problem, we first must count the number of outcomes (n) for this experiment. There are 2 rows of 4, so there are 8 outcomes. Now we must find what exactly the answer is looking for.
The answer is looking for the answer to the compound probability statement; P( A then B then A). If you look at the table of outcomes (results), there is one result that matches ABA. So, find the number of specific outcomes from the set of events and divide it by the total number of outcomes.
Solution:
1/8= 0.125
Answer:
14.2%
Step-by-step explanation:
1. Find the new cost for Stock A:
2000x0.88=1760
2. Find the new cost for Stock B:
5720x0.85=4862
3. Find total sum of the original stocks:
2000+5720=7720
4. Find total sum of the new stocks:
1760+4862=6622
5. Find the decrease:
7720(1-x)=6622
Solve for x
x=14.2
