Answer:
52kg
Step-by-step explanation:
use cross multiplication method when encounter problems like these
Answer:
Cb.12
Step-by-step explanation:
I took the test my self
Domain: {1, -2, -3, -6}
Range: {5, 4, 0, 2}
im not 100% sure but Im pretty sure it’s that
Answer:
subtraction property of equality
Step-by-step explanation:
The substraction property of equality is the property that states that you can solve the value of an equality by subtracting the value that is adding up to the variable by substracting it from the other side of the equality, an example would be like this:

By substracting form both sides the value that is along the "x" you get the value of the "x".
Answer:
<em>795.596≤u≤804.403</em>
Step-by-step explanation:
Confidence interval is expressed using the formula;
CI = xbar ± (z*s/√n)
xbar is the sample mean
z is the z score at 98% confidence
s is the standard deviation
n is the sample size
Given
xbar = 800
z = 2.33
s = 10
n = 28
Substitute into the formula;
CI =800 ± (2.33*10/√28)
CI = 800 ± (2.33*10/5.2915)
Ci = 800± (2.33* 1.8898)
CI = 800 ± 4.4033
CI = (800-4.4033, 800 + 4.4033)
CI = (795.596, 804.403)
<em>Hence an interval estimate of u with 98% confidence is expressed as </em>
<em>795.596≤u≤804.403</em>