MATHEMATICS COLLEGE

-8x-x=x-4x plz do it step by step ans show me

Answers

Answer 1
Answer: Answer: 3x - x = 0

Step-by-step explanation:

1.Simplify -8x - x to -9x.

2. Simplify x - 4x to -3x.

3. Divide both sides by -3.

4. Subtract x from both sides.

5. Simplify 3x - x to 2 x.

6. Divide both sides by 2.
Answer 2
Answer: The answer is 3x-x=0

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Which fraction is larger: -3/4 or –2/4
Blood potassium level, continued. Judy’s measured potassium level varies according to the Normal distribution with with μ=3.8 and σ=0.2mmol/l. Let’s consider what could happen if we took 4 separate measurements from Judy. What is the blood potassium level L such that the probability is only 0.05 that the average of 4 measurements is less than L? (Hint: This requires a backward Normal calculation.)the book says about 3.64 but i got 3.28
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jermey has a weekend job as soccer referee. one weekend, he earns $140 by working 4 games. another weekend he earns $210 by working 6 games. if jeremy graphed an equation that represented his total earning based on the number of games worked, what would be the slope of the graph

I need to find an equation that hass an infinite number of solutions

Answers

Answer

2(7x + 3) - x

= 13x + 6

Explanation

2(7x + 3) - x

= 14x + 6 - x

= 14x - x + 6

= 13x + 6

Hope this Helps!!!

There are 16 boys and 12 girls in mr..harts science class. He wants to form as many groups as possible for a project. All the groups must be the same size, with the same number of boys and the same number of girls in each group. What is the greatest number of groups mr. Hart can make? How many boys and how many girls will be in each group?

Answers

Answer:

12

Step-by-step explanation:there are only 12 girls so that is the only amount of groups to be formed

The weight, in pounds, of a certain type of adult squirrel is normally distributed with a mean of 4.1 pounds and a standard deviation of 0.5 pounds. What percentage of squirrels have a weight between 3 and 5 pounds?

Answers

Answer:

95.02% of squirrels have a weight between 3 and 5 pounds.

Step-by-step explanation:

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 4.1 pounds

Standard Deviation, σ = 0.5 pounds

We are given that the distribution of weight is a bell shaped distribution that is a normal distribution.

Formula:

z_(score) = \displaystyle(x-\mu)/(\sigma)

P(weight between 3 and 5 pounds)

P(3 \leq x \leq 5) = P(\displaystyle(3 - 4.1)/(0.5) \leq z \leq \displaystyle(5-4.1)/(0.5)) = P(-2.2 \leq z \leq 1.8)\n\n= P(z \leq 1.8) - P(z < -2.2)\n= 0.9641- 0.0139 = 0.9502= 95.02\%

P(3 \leq x \leq 5) = 95.02\%

95.02% of squirrels have a weight between 3 and 5 pounds.

Final answer:

Using the concepts of normal distribution and Z-scores, it is found that approximately 95% of the squirrels have weights between 3 and 5 pounds.

Explanation:

The problem involves the use of the concept of normal distribution in statistics. In this case, we have a mean of 4.1 pounds and a standard deviation of 0.5 pounds. We have two weight points, namely 3 pounds and 5 pounds. To find out the percentage in this interval, we need to convert the weights into z-scores, which standardizes them. The formula for this is Z = (X - μ) / σ, where X is the weight point, μ is the mean, and σ is the standard deviation.

The Z-score for 3 pounds is Z1 = (3 - 4.1) / 0.5 = -2.2, and the Z-score for 5 pounds is Z2 = (5 - 4.1) / 0.5 = 1.8. Looking these Z-scores up in the standard normal table (or using a calculator with a normal distribution function), we get 0.9857 for Z1 and 0.9641 for Z2. The difference between these values gives the percentage of squirrels within the interval, which is 0.9641 - (1 - 0.9857) = 0.950 or 95%. Hence, approximately 95% of the squirrels have a weight between 3 and 5 pounds.

Learn more about Normal Distribution here:

brainly.com/question/34741155

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There were 84 runners to start a race. In the first half of the race, 1/4 of them dropped out. In the second half of the race, 1/3 of the remaining runners dropped out. How many runners finished the race?

Answers

Answer:

1/3

.................

Ashley's Internet service is terribly unreliable. In fact, on any given day, there is a 25 % chance that her Internet connection will be lostat some point that day. What is the probability that her Internet service is not broken for five days in a row? Enter a fraction or round
your answer to 4 decimal places, if necessary.

Answers

Answer:

The probability that her internet service will not be broken for five days in a row is 243/1024

Step-by-step explanation:

Here, we want to calculate the probability that her internet service is not broken for five days in a row

Let the event that her internet will be broken be B and the event that her internet will not be broken be N

P(B ) = 25% = 0.25

P(N) = 1-0.25 = 0.75 = 3/4

Thus, the probability that her internet is not broken for five days in a row = P(N) * P(N) * P(N) * P(N) * P(N)

= 3/4 * 3/4 * 3/4 * 3/4 * 3/4 = 243/1024

A square has a side length 9 cm. What is its area? A square has an area of 9 cm2. What is its side length?

Answers

Answer:

Area = 81; Side Length = 3

Step-by-step explanation:

The area of a square is the side lenght squared, and 9² is 81.

The side lengh can be found by taking the square root of the area. √9 = 3
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