2 years ago

I NEED ANSWERS FAST PLEASE HELP ME !!!

Mathematics

1 answer:

Scilla [17]2 years ago

6 0

Answer:

$160,000 to $220,000 = 37.5% increase

Step-by-step explanation:

You might be interested in

Mr. McMurry wants to get a gym membership. Planet fitness charges $25 a month. Everyday Fitn

Masja [62]

Answer:

Step-by-step explanation:

5 0

3 years ago

Use abc to find the value of sin a

kolbaska11 [484]

sin α = opposite leg/ hypotenuse

For ΔABC,

sin A = |BC|/|AB|

sin A = 12/37

7 0

3 years ago

What fraction does 4 triangles represent when 1 hexagon is worth 1 whole

strojnjashka [21]

Answer: 2/3

Step-by-step explanation: a hexagon is made up of 6 triangles so it would be 4/6 which can be simplified is 2/3

4 0

2 years ago

The article "Occurrence and Distribution of Ammonium in Iowa Groundwater" (K. Schilling, Water Environment Research, 2002:177–18

Papessa [141]

Answer: 95% confidence interval for the difference between the proportions would be (1.31, 1.39).

Step-by-step explanation:

Since we have given that

Number of alluvial wells = 349

Number of quaternary wells = 143

Number of alluvial wells that had concentrations above 0.1 = 182

Number of quaternary wells that had concentrations above 0.1 = 112

Average of alluvial wells = 0.27

Standard deviation = 0.4

Average of quaternary wells = 1.62

Standard deviation =1.70

So, 95% confidence interval gives

alpha = 5% level of significance.

$\dfrac{\alpha}{2}=2.5\%\\\\z_{\frac{\alpha}{2}}=1.96$

So, 95% confidence interval becomes,

$(1.62-0.27)\pm 1.96\sqrt{\dfrac{0.4^2}{349}+\dfrac{1.7^2}{143}}\\\\=1.35\pm 1.96\times 0.020\\\\=(1.35-0.040,1.35+0.040)\\\\=(1.31,1.39)$

Hence, 95% confidence interval for the difference between the proportions would be (1.31, 1.39).

6 0

3 years ago

Find the distance between this pair of parallel lines. These equations are in slope- intercept form.

garri49 [273]

Distance is -2 my dude

8 0

3 years ago