Answer:
Step-by-step explanation:
Given: The mean of the temperatures in the chart is 24° and standard deviation is 4°.
To find: How many years had temperatures within one standard deviation of the mean
Solution: Mean temperature μ = 24 , standard deviation σ =4
The lower and upper bound for temperature within one standard deviation of the mean is given as:
Lower bound = μ - σ = 24 - 4=20
Thus, the Lower bound is = 20
Upper bound = μ + σ = 24+ 4=28
Thus, the Upper bound is = 28
Now, The temperature value between (Lower bound, Upper bound) that is (20, 28) is said to be within one standard deviation of the mean.
Hence 27° is the temperature value that is within one standard deviation of mean.
The vertex is (7,-50)
***rewrite in standard form***
Answer:
Use the distributive property on each side of the equation.
Explanation:
PEMDAS
Answer:
around 36 in (round 35.98 to nearest tenth)
Step-by-step explanation:
Answer:
Step-by-step explanation:
Multiply out 
in order to find out which expression it is equivalent to.
1) Since the whole quantity is squared, write it out as 
.
2) Multiply binomials by using the FOIL method. Multiply the terms that are listed first in each binomial, then the ones that are listed outermost when looking at both binomials, then innermost, and finally the last terms listed in each binomial. Simplify and combine like terms.
3) 
, so 
must be 
. Thus, 
is equivalent to -1. Knowing this, simplify and combine like terms.
Thus, it is equivalent to 
.
