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3 years ago

What is the answer to 3 times 126

Mathematics

2 answers:

Jlenok [28]3 years ago

7 0

Answer:

378

Step-by-step explanation:

Leno4ka [110]3 years ago

5 0

Answer:

378

Step-by-step explanation:

3*126

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True or false: any nonzero integers, the product and the quotient have the same sign. Why?

serg [7]

False. This is because no matter what the number is, the properties of multiplication and division stay the same. So, if one odd and even number multiply/divide, then the answer will be negative. But, if two numbers of the same sign (both either negative or positive) are divided/multiplied, they will both be positive. Therefore, the result is not always the same sign as the starting integers

Hope this helped! :D

3 0

3 years ago

Bastien, Inc. has been manufacturing small automobiles that have averaged 50 miles per gallon of gasoline in highway driving. Th

alexira [117]

Answer:

We conclude that the the manufacturer's advertising campaign is not correct.

P-value of test = 0.067.

Step-by-step explanation:

We are given that an independent testing service road-tested 36 of the automobiles. The sample showed an average of 51.5 miles per gallon. The population standard deviation is 6 miles per gallon.

We have to conduct a test to determine whether or not the manufacturer's advertising campaign is legitimate.

Let $\mu$ = population average gasoline of new small cars in highway driving.

SO, Null Hypothesis, $H_0$ : $\mu$ $\leq$ 50 miles per gallon {means that the manufacturer's advertising campaign is not correct}

Alternate Hypothesis, $H_A$ : $\mu$ > 50 miles per gallon {means that the manufacturer's advertising campaign is correct}

The test statistics that will be used here is One-sample z test statistics as we know about the population standard deviation;

T.S. = $\frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n} } }$ ~ N(0,1)

where, $\bar X$ = sample average gasoline = 51.5 miles per gallon

$\sigma$ = population standard deviation = 6 miles per gallon

n = sample of automobiles = 36

So, test statistics = $\frac{51.5-50}{\frac{6}{\sqrt{36} } }$

= 1.50

Now at 0.05 significance level, the z table gives critical value of 1.6449 for right-tailed test. Since our test statistics is less than the critical values of z as 1.50 < 1.6449, so we have insufficient evidence to reject our null hypothesis as it will not fall in the rejection region.

Also, P-value is given by the following formula;

P-value = P(Z > 1.50) = 1 - P(Z $\leq$ 1.50)

= 1 - 0.93319 = 0.067 or 6.7%

Therefore, we conclude that the the manufacturer's advertising campaign is not correct as its new small cars average less than or equal to 50 miles per gallon in highway driving.

3 0

4 years ago

Solve for b: 3(b - 4) = -3

Setler [38]

Answer:

b=3

Step-by-step explanation:

it is in the picture

3 0

3 years ago

Read 2 more answers

To get from her home to a friend's house, Georgia must go past a school, then a post office.

Nataliya [291]

The time it takes for a certain object or person, in this case Georgia, to travel from one place to another is the quotient of the distance and speed. Such that the given above can be best represented by the equation below,
42 minutes = (7/8 + 5/6 + x) / 1/18
The value of x from the equation is approximately 0.625 miles.

3 0

3 years ago

Read 2 more answers

Find 3 consecutive even integers such that the sum of the first and third is -16.

ICE Princess25 [194]

Answer:

1st number = -10

2nd number = -8

3rd number = -6

Step-by-step explanation:

Take the first number as x

The next consecutive even number will be x+2

The 3rd even number will be x+4.

Sum of 1st and 3rd number = -16

(x) + (x+4) = -16

x+ x+4 = -16

2x + 4 = -16

2x = -16 -4

2x = -20

x = $\frac{-20}{2}$

x = -10

2nd number = x+ 2

= -10 + 2

= -8

3rd number = x + 4

= -10 + 4

= -6

Hope this helps.

4 0

3 years ago