Answer:
y
=
x
3
−
4
x
y
=
x
2
+
4
y
=
3
x
−
4
Step-by-step explanation:
Answer:
x = 3
Step-by-step explanation:
take 60 degree as reference angle and using cos rule
cos 60 = adjacent/hypotenuse
1/2 = x/6
do cross multiplication
2*x = 6*1
x = 6/2
x = 3
Answer:
r = -0.1125
Step-by-step explanation:
It works well to subtract 0.5 and convert the percentage to a decimal. You can find the sum by hand or using a calculator.
r = -0.5 +0.0025 -0.125 +0.51
r = -0.1125
_____
<em>Comment on the use of a calculator</em>
Many calculators assume that a percentage is to be multiplied by something. If you type this expression into the Google calculator, it will take the % symbol to be an indicator that modulo arithmetic is desired. (It will compute .25 mod -.125 = 0.) So, you need to be aware of how your calculator handles "%". It may be best to do the conversion to decimal before you present the problem to a calculator.
From the question, we know the population standard deviation, σ = 1.63, the sample standard deviation, s = 3.07, the sample mean,
and the sample size, n = 38.
The question illustrates a hypothesis chi-square test of variance.
The test statistics for a Chi-squared test of variance is given by
Answer:
3BC
Step-by-step explanation:
8BC - 9BC + 10BC - 6BC = BC(8 - 9 + 10 - 6) = BC(3) = 3BC
