Answer:
Step-by-step explanation:
hello :
the system is : x+ y =4 ...(*)
2x - y = -1...(**)
add(*) and (**) : 3x=3 so : x=1
put this value into (*) : 1+y=4 so : y=3
one solution : (1 , 3)
I honestly dont know what to solve?
1+1+1 is 3. And you have 1/3+1/3+1/3=3/3=1. So you end up with 3+1=4. So yes
9514 1404 393
Answer:
24.3 ft
Step-by-step explanation:
If h is the height of the ladder up the tree, the geometry can be modeled as a right triangle with legs h and 6, and hypotenuse 25. The Pythagorean theorem gives you the relation ...
h² +6² = 25²
h² = 625 -36 = 589
h = √589 ≈ 24.3
The ladder reaches about 24.3 feet up the tree.
Answer: 0.9738
Step-by-step explanation:
We assume that the scores follows a normal distribution.
Let 
denotes the class average .
As per given we have,
Sample size : n= 12
The probability that a class of 15 students will have a class average greater than 70 on Professor Elderman’s final exam will be :
Hence, the correct answer = 0.9738
