Answer:
x = 3, y = -3
Step-by-step explanation:
3x - 2y = 15 (eq 1)
x + y = 0 (eq 2)
(eq 2) x 2
2x + 2y = 0 (eq 3)
(eq 1) + (eq 3)
5x = 15
x = 3
SUB x=3 into (eq 2)
3 + y = 0
y = -3
Answer:
Step-by-step explanation:
We would set up the hypothesis test. This is a test of a single population mean since we are dealing with mean
For the null hypothesis,
µ = 100g
For the alternative hypothesis,
µ < 100g
Due to the <, It means that it is left tailed test.
Since the number of samples is large, the population standard deviation is given, the z test would be used. The formula is
z = (x - µ)/(σ/√n)
Where
x = sample mean
µ = population mean
σ = population standard deviation
n = number of samples
From the information given,
µ = 100g
x = 99 g
σ = 1g
n = 30
z = (99 - 100)/(1/√30) = - 5.48
Looking at the normal distribution table, the probability corresponding to the z score is less than 0.00001
P value < 0.00001
The point-slope form:
We have the points (3, 6) and (-2, 1). Substitute:
<h3>Answer: 4. y - 6 = 1(x - 3)</h3>
Answer:
I have no idea I am not sure i think 14
Step-by-step explanation:
Change the numbers into improper fractions then subtract
