3 years ago

What exclusions are placed on the variable a for the fraction (a^2 + 4m)/a^2+4?

Mathematics

1 answer:

sattari [20]3 years ago

4 0

Answer:

The answer is A.) -2

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An environmental group at a local college is conducting independent tests to determine the distance a particular make of automob

melomori [17]

Answer:

$26.5265$

Step-by-step explanation:

Confidence Interval

When the population standard deviation $\sigma$ is known, the formula for a confidence interval for a population mean $\bar x$ is:

$\displaystyle \bar x \pm z\frac{\sigma}{\sqrt{n}}$

Where n is the sample size and z is the corresponding z-value from the standard normal distribution for the selected confidence level. The value of z for a 95% confidence interval is z=1.96. The rest of the values are

$\bar x=28.2,\ \sigma=2.7, \ n=10$

Calculating the confidence interval

$\displaystyle 28.2 \pm 1.96\frac{2.7}{\sqrt{10}}$

$\displaystyle 28.2 \pm 1.6735$

Or, equivalently

$26.5265$

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4 years ago

Alyssa drives 10 miles in 20 minutes. If she drove one hour in total at the same rate, how far did she go? i know the answer but

Fudgin [204]

Answer:

30 miles

Step-by-step explanation:

20 x 3 is 60 minutes

10 x 3 is 30 miles

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2 years ago

Find the area of the figure A) 450MM B) 67,500 MM C) 600MM D)150MM

Sphinxa [80]

Thats it option (C). Hope it helps!!

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3 years ago

Read 2 more answers

Identifying solutions by evaluating is the number a solution of 2x +1>-3

liq [111]

Answer:

b or c

Step-by-step explanation:

2×-1 +1= -1

-1>-3

2×0+1= 1

1>-3

For this reason the equality can be b or c

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3 years ago

The distance of planet Mercury from the Sun is approximately 5.8. 107 kilometers, and the distance of planet Venus from the Sun

lakkis [162]

Answer: 1 is the answer

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3 years ago