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GREYUIT [131]
3 years ago
14

9x-4=3x-28 step by step

Mathematics
1 answer:
kompoz [17]3 years ago
6 0

Answer:

Step-by-step explanation:

9x-4= 3x-28

We simplify the equation to the form, which is simple to understand  

9x-4=3x-28

We move all terms containing x to the left and all other terms to the right.  

+9x-3x=-28+4

We simplify left and right side of the equation.  

+6x=-24

We divide both sides of the equation by 6 to get x.  

x=-4

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A police officer claims that the proportion of accidents that occur in the daytime (versus nighttime) at a certain intersection
Roman55 [17]

Answer: -1.78

Step-by-step explanation:

As per given description, we have

Population proportion : p=0.35

Sample size : n= 500

Sample proportion : \hat{p}=\dfrac{156}{500}=0.312

Test statistic for population proportion :-

z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\\\=\dfrac{0.312-0.35}{\sqrt{\dfrac{0.35(1-0.35)}{500}}}\\\\=-1.78146747757\ \ \text{(Simplified)}\\\\\approx-1.78

Hence, the test statistic for this hypothesis test for a proportion= -1.78

3 0
3 years ago
The moon is 250,000 miles away.Haw man feet is it from earth
12345 [234]

The answer is " 1320000000 ft " away

5 0
3 years ago
A dictionary contains the following 9 words: two, mice, three, squeaking, the, blind, deaf, birds, rabbits. What is the probabil
IgorC [24]

Answer:

<u>The correct answer is B. 1/729</u>

Step-by-step explanation:

1. Probability of any of the nine words would be randomly cited.

Using the Laplace Rule, we calculate that probability is 1/9

2. Now let's calculate the probability of any two - word phrase in specific order from those nine in the dictionary. We should remember that the probability of occurrence of two or more statistically independent events is equal to the product of their individual probabilities. So,

1/9 * 1/9 = 1/81

3. Using the same Multiplication Rule, we can calculate the probability of a random generation of the phrase "three blind mice", in that specific order. Because there are other phrases that could be generated with those three words, but in different order.  The question was specific about the order.

1/9 * 1/9 * 1/9 = 1/729

<u>The probability of randomly generating the phrase "three blind mice" is 1/729 or 0.137%</u>

7 0
3 years ago
First, she walks 4 blocks
antoniya [11.8K]

Answer:.

W. T. F.

it has nothing to do with a dog!?!?!?!?!!?!?!?!?!?!?

5 0
3 years ago
Find the area of the shape
Gwar [14]

Answer:

3pi

Step-by-step explanation:

First find the area of the entire circle

A = pi r^2

A = pi * 2^2

A = 4 pi

We know that this is 3/4 of a circle so multiply the area by the fraction of the circle

3/4 * 4 pi

3 pi

4 0
3 years ago
Read 2 more answers
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