Answer:
5.8
Step-by-step explanation:
Answer:
5^2=25 5x5
5^-2=.04 The reciprocal of 5 is 1/5 ^2 means that 1/5 x2 = 2/5 or .4
(-5)^2=25 -5*-5
-5^2=-25 -(5*5)
The value of x is
1. x= -37/48
2. x=0
3. x = 33/4
4. x= -20/7
<h3>What is equation?</h3>
A mathematical statement consisting of an equal symbol between two algebraic expressions that have the same value.
1. 6(8 x + 6) + = - 1
48x + 36 = -1
x= -37/48
2. 9x/7 + 6 = 6
9x/7= 6-6
9x/7 =0
x= 0*7/9
x= 0
3. 2x/11 (11 - 7) = 6
x * 4= 6*11/2
4x= 33
x = 33/4
4. 11x/4 (4 - 2) = 9x + 10
11x/4 * 2 = 9x +10
11/2*x = 9x +10
-7/2x = 10
x= -20/7
Learn more about equation here:
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Answer:
0.019
Step-by-step explanation:
btw instead of wasting points you can look that up on g*oogle, goo*gle has a calculator that will help you find out decimals and percent's!
pieces of advice
can i have brainliest?
Answer:
A sample of at least 545 adults is needed.
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 
.
For this problem, we have that:
The margin of error is:
95% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
If he wishes to be 95% confident that his estimate contains the population proportion, how large a sample will be necessary?
We need a sample of at least n.
n is found when M = 0.03. So
Rounding up
A sample of at least 545 adults is needed.
