Answer:
D
Step-by-step explanation:
(-30 + 25 = -5)
(-5 - 20 = -25)
Never reached sea level,
did not end at -15,
-30 /= -25
D
First step: x= ± √ 121
Second step and correct answer: x= ± 11
Because: x^2 = x= ± √
Answer:
2.3+r=7.1
move all terms to the left:
2.3+r-(7.1)=0
add all the numbers together, and all the variables
r-4.8=0
move all terms containing r to the left, all other terms to the right
r=4.8 is the answer
Answer:
4 : 7 : 9
Step-by-step explanation:
The ratio of their dividends is
200 : 350 : 450 ← divide each part by 50
= 4 : 7 : 9 ← in simplest form
Answer:
15,240,960 serial numbers
Step-by-step explanation:
Since no repeats are allowed and the order matters, the number of possible serial numbers is given by the product of the permutation of 4 out of 9 letters by the permutation of 4 out of 10 numbers:
There are 15,240,960 ways to generate a serial number.
