1 hour = 60 mins = 3600 sec
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6 sec = 1 flash
3600 sec = 3600 ÷ 6 = 600 flashes
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Answer: 600 flashes
Answer:
Addition Property of Equality
Step-by-step explanation:
That property says it's OK to add the same number to both sides of an equation
If a = b, then a + c = b + c
I'm guessing the answer is 6in.
because the original width of the photo is 8in-4in
which is 4in.
and 8 to 10 is a difference of 2
so add 2 to 4
its 6
The standard deviation of a point estimator is the <u>standard error.</u>
"The point estimate is used to estimate the exact value of any parameter. For example, an internet poll says that 45% of Americans are concerned for the environment."
"Point estimates is a good measure but the problem with this parameter is that the sample of the statistics may vary so that there is a chance of sampling error."
"As the researcher is unable to presume that closeness of the sample statistics parameter with respect to the parameter so researcher refers to calculate the standard error instead of point estimate."
To learn more about standard error here
brainly.com/question/13179711
#SPJ4
Answer:
1.25 cups
Step-by-step explanation:
The inicial concentration of the 10 cups of mixture is 10% of white vinegar and 90% water. We can then calculate the number of cups of white vinegar in the mixture:
Amount of white vinegar = 10% of 10 cups = 1 cup of white vinegar
Concentration of white vinegar = 1/10 (cups of white vinegar over cups of mixture
So, if we want to add white vinegar (x cups) until the mixture will be 20% white vinegar and 80% water, we have that:
Amount of white vinegar = (1+x) cups of white vinegar
Total number of cups in the mixture = 10+x
Concentration of white vinegar = 20% = (1+x)/(10+x)
(1+x)/(10+x) = 0.2
1 + x = 2 + 0.2x
0.8x = 1
x = 1.25 cups
You need to add 1.25 cups of white vinegar.
