H=0
0=-16t^2+40
-40=-16t^2
-40/-16=2.5=t^2
t= sqrt2.5
t=1.58seconds
a
The approximate population of the Latinos in the united states, growing at a growth rate of 2.5% per year in 2020 is 64,004,227
<h3>What is an
equation?</h3>
An equation is an expression that shows the relationship between two or more numbers and variables.
Let y represent the population of the latinos x years after 2010.
There were 50,000,000 latinos in the united states. at a growth rate of 2.5% per year, hence:
y = 50000000(1.025)ˣ
In 2020 (x = 10):
y = 50000000(1.025)¹⁰ = 64,004,227
The approximate population of the Latinos in the united states, growing at a growth rate of 2.5% per year in 2020 is 64,004,227
Find out more on equation at: brainly.com/question/2972832
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The formula is
A=pe^(r×t/12)
A future value 543
P present value 500
R interest rate 0.065
E constant
T time t ( in months)
Solve the formula for t
T/12=[log (A/p)÷log (e)]÷r
T/12=(log(543÷500)÷log(e))÷0.065
T/12=1.3
T=1.3×12
T=15 months
Answer:
You will need to sample at least 3108 students.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence level of 
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of 
.
In this problem, we have that:
99% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
The margin of error is:
How many students will I need to survey if I want to estimate, with 99% confidence, the true proportion to within 2%?
You need a sample size of at least n.
n is found when M = 0.02. So
You will need to sample at least 3108 students.
5Answer:
Step-by-step explanation:
