Answer:
15x
Step-by-step explanation:
Combine like terms.
9+6=15
9x+6x=15x
Answer:
T=-80
Step-by-step explanation:
P=kr/T when p=4 T=20 r= 2 k=40 so when p=-5,r=10 then T=-80
Answer:
Interesting question. I am bad at these questions but I think it is for not standard
Step-by-step explanation:
If im wrong Im sorry
Answer:
Median =17
Step-by-step explanation:
Given that the mean height of an adult giraffe is 17 feet. Suppose that the distribution is normally distributed with standard deviation 0.9 feet.
Let X be the height of a randomly selected adult giraffe.
X is a random variable.
a) X is N(17, 0.9)
b) Median giraffe height = 17 ft since in normal distribution mean = median
c) When x = 18.5, Z = 
d) 
e) 
f) 75th percentile for z is 0.675

Answer:
2r+1+(-4r)+7
= -2r+8
= -2(r+4)
Step-by-step explanation: