Answer:
Pipe 1 twice as fast as pipe 2.
(Pipe 1 time * Pipe 2 time) / (Pipe 1 time + Pipe 2 time) = combined time
(x * (x/2)) / (x + x/2) = 10
(x^2/2) / 1.5 x = 10
x^2 / 2 = 15 x
x^2 /2 - 15 x = 0
x = 30 (slow pipe)
x/2 = 15 (fast pipe)
So it would take 30 hours using the slow pipe only.
Step-by-step explanation:
I think number 1 or 3 idk for sure
Answer:
The test statistic is z = -2.82.
Step-by-step explanation:
A marketing research firm believes that more than half of adults drink mostly either regular or diet soda.
This means that the null hypothesis is: 
The alternate hypothesis is: 
The test statistic is:
In which X is the sample mean, 
is the value tested at the null hypothesis, 
is the standard deviation and n is the size of the sample.
0.5 tested at the null hypothesis:
This means that:
Gallup took a nationally representative sample of 2027 adults and asked them about their soda consumption. The survey shows that 950 of those surveyed drink mostly either regular or diet soda.
This means that 
Test statistic:
The test statistic is z = -2.82.
Answer:
When I squared the binomials, they became quadratic trinomials.
(Not sure if this is the kind of answer you want, sorry if it's not!)
(x-3)² = x² - 6x + 9
(x+2)² = x² + 4x + 4
(x-4)² = x² - 8x + 16
(x+5)² = x² + 10x + 25
Hello!
To find the area of a parallelogram you use the equation
A = bh
A is area
b is base
h is height
Put in the values you know
A = 15 * 3
Multiply
A = 45
The answer is 45in squared
Hope this helps!
