Simplify 8.3+3.5y-0.5(12y-7)

Mathematics

1 answer:

ladessa [460]4 years ago

6 0

Answer:

-2.5y+11.8

Step-by-step explanation:

first you do the distributive property to get

8.3+3.5y-6y+3.5

then you combine the like terms to get the answer

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An F5 tornado is classified as having mean wind speeds greater than 261 mph. In an effort to classify a recent tornado, 20 wind

mina [271]

Complete Question

An F5 tornado is classified as having mean wind speeds greater than 261 mph. In an effort to classify a recent tornado, 20 wind speed measurements were randomly selected from within the path of the tornado. Suppose the mean wind speed for this tornado really is greater than 261 mph with a sample standard Deviation 41.09 mph. Based on the data, if we fined little to no evidence against the null hypothesis that the mean wind speed is 261 mph, we have made _______________.

Answer:

$P-value=0.3322$

Step-by-step explanation:

From the question we are told that:

Sample size $n=20$

Population mean $N=261$

Sample mean $\=x= 265.1$

Sample standard deviation $\sigma=41.09$

Generally the equation t test statistics is mathematically given by

$t=\frac{\=x-\mu}{\frac{s}{\sqrt{n} } }$

$t=\frac{265.1-261}{\frac{41.09}{\sqrt{20} } }$

$t=0.446$

Therefore

Pvalue from table is

$P-value=0.3322$

6 0

3 years ago

PLEASE HELP 50 POINT AND BRAINLIEST

shepuryov [24]

Hello!

You can't use the product of powers rule because the numbers do not have exponents

If they did have exponents you still won't be able to use it because the bases have to be the same

Hope this helps!

4 0

3 years ago

Read 2 more answers

For the following right triangle, find the side length x. Round your answer to the nearest hundredth.

jarptica [38.1K]

Answer:

x $x=\sqrt{19^2-10^2}=\sqrt{361-100} =\sqrt{261} \approx16.15549\\\approx16.16$