Answer:
8z
Step-by-step explanation:
Since these are like terms, add the numbers together and then put the z on.
Answer:
We need at least 4238 scores.
Step-by-step explanation:
We have that to find our 
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of 
.
So it is z with a pvalue of 
, so 
Now, find the margin of error M
In which 
is the standard deviation of the population and n is the size of the sample.
How many random IQ scores must be obtained if we want to find the true population mean (with an allowable error of 0.5) and we want 97 percent confidence in the results
We need at least n scores, in which N is found when 
. So
We need at least 4238 scores.
Answer:
12-inch by 16-inch- it's the largest available and can be reduced to scale for smaller photos.
Step-by-step explanation:
-Given the dimensions 7-inch by 9-inch, 8-inch by 10-inch, and 12-inch by 16-inch:
#If Alice buys 7-inch by 9-inch and the photo turn's out to be a 8-inch by 10-inch or 12-inch by 16-inch then part of her photo will be cut off.
Hence, Don't buy.
#If Alice buys 8-inch by 10-inch and the photo turn's out to be a 12-inch by 16-inch then part of her photo will be cut off. However, if the photo is a 7-inch by 9-inch then it will fit.
Hence, don't buy.
#If Alice buys a 12-inch by 16-inch and the photo turns out to be smaller than expected the she can always print it out and trim or reduce the to scale excessive print paper to the desire dimensions.
Hence, buy the 12-inch by 16-inch since it's the largest available and can be reduced to scale for smaller photos.
Antonio put 4.6 pounds of flower into each stack since 23 pounds divided by 5 stacks is 4.6
Answer:
4.72 in.
Step-by-step explanation:
BC = 3.1 in.
CD = 7.2 in.
Altitude of right triangle altitude is given as 
, where:
h = altitude
x = 3.1 in.
y = 7.2 in.
Plug in the values into the formula
(nearest hundred)
