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3 years ago

A) Simplify the expression and explain each step.

Mathematics

1 answer:

dezoksy [38]3 years ago

7 0

Answer:

see below PLEASE GIVE BRAINLIEST

Step-by-step explanation:

A) 4(3X + 2) - 2 = 12X + 8 - 2 = 12X + 6

B) 20b - 16 = 4(5b - 4)

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7/11 converted to a decimal rounded up 2 places

astraxan [27]

Answer:

0.636

Step-by-step explanation:

First off, we'll interpret the fraction bar to mean "divided by." This means that 7/11 is the same as 7 divided by 11.

Second, you have requested to see 2 decimal places in your answer, so we'll write the 7 as 7.00 instead (a 7 with 2 zeros after the decimal point).

Now, we'll just do what the fraction bar says: divide 7.00 by 11:

And that's about it! 7/11 written as a decimal to 3 decimal places is 0.636.

3 0

3 years ago

Read 2 more answers

A circular chicken house has an area of 40m². What length of chicken wire is required to fence the house without any wire left o

Lyrx [107]

Good bless you brother I wish I can help you

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3 years ago

Subtract these polynomials. (x2 + 5x + 2) – (5x2 – x – 2) =

UNO [17]

Answer: 4(x-x2)

Step-by-step explanation: please mark brailyest

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3 years ago

72 divided by negative 4

zavuch27 [327]

The answer is -18. :3

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3 years ago

An automobile manufacturer has given its van a 47.2 miles/gallon (MPG) rating. An independent testing firm has been contracted t

7nadin3 [17]

Answer:

The test statistics is $t = -1.7$

The Null and Alternative hypothesis are

$H_o : \mu = 47.2$ and $H_a : \mu \ne 47.2$

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 47.2 miles/gallon(MPG)$

The sample size is $n = 250 \ van$

The sample mean is $\= x = 47.0$

The sample standard deviation is $\sigma = 1.9$

The level of significance is $\alpha = 0.02$

Given that the value which the manufacturer gave the automobile is 47.2 and it is believed that this is not correct, then

The Null Hypothesis is

$H_o : \mu = 47.2$

The alternative Hypothesis is

$H_a : \mu \ne 47.2$

The test statistics can be mathematically evaluated as

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

substituting values

$t = \frac{\= 47- 47.2}{\frac{1.9 }{\sqrt{250} } }$

$t = -1.7$

7 0

3 years ago