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3 years ago

Expand 2(b + 6 ) can somone please tell me the anwnser

Mathematics

2 answers:

Vitek1552 [10]3 years ago

8 0

Answer:

(a−2b)6

Step-by-step explanation:

Use the Binomial Theorem. a6+6a5(−2b)+15a4(−2b)2+20a3(−2b)3+15a2(−2b)4+6a(−2b)5+(−2b)6

telo118 [61]3 years ago

6 0

Answer: 2b+12

Step-by-step explanation:

Because the number is in front of the bracket you have to times everything in the bracket by the number on the outside.

So,

2 times b is 2b

And

2 times 6 is 12

So it would be 2b+12

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According to the synthetic division below which of the following statements are true?

Rudik [331]

A is true. Thus D is also true. The result of the synthetic division shows C is true.

The appropriate choices are ...
A. (x - 2) is a factor of 3x² - 11x + 10
C. (3x² - 11x + 10) ÷ (x - 2) = (3x - 5)
D. The number 2 is a root of F(x) = 3x² - 11x + 10

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3 years ago

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The cost of a catering prom is 250 plus $15 for each person attending. what is the cost of 150 people?

Anastasy [175]

Answer:

$2500

Step-by-step explanation:

First, multiply the $15 for the 150 people attending, to get 2250. Next, add the last $250 to get a total cost of $2500

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3 years ago

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seropon [69]

Remember that

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2 years ago

Please answer this question

Tanya [424]

The answer is about 1.6

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4 years ago

If 95% and 98% confidence intervals were calculated from the same sample data in order to estimate the true cost of an appliance

damaskus [11]

Answer:

D) The z-statistics would be different.

Step-by-step explanation:

Confidence Interval can be calculated using M±ME where

M is the sample mean
ME is the margin of error from the mean

An margin of error (ME) from the mean can be calculated using the formula

ME= $\frac{z*s}{\sqrt{N} }$ where

z is the corresponding z-statistic in the given confidence level

s is the population standard deviation

N is the sample size

If 95% and 98% confidence intervals were calculated from the same sample data, then M, s and N are same.

$\frac{s}{\sqrt{N} }$ is called standard error. Since s and N are same the standard errors would also be same.

But, two tailed z-statistic for 95% confidence level is ≈1.96 where for 98% it is ≈2.33

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3 years ago