please help im not good with these

The negative exponents in the denominator change it into positive exponents are 1/(2⁻³) = 8, 1/(2x⁻³) = (1/2)x³  and 4/(2(3⁻³)) = (4/2)×3³ = 54

If you have a fraction with a negative exponent in the denominator, you can change it into a positive exponent by reversing the fraction and taking the reciprocal.

For example, if you have the fraction 1/(x⁻²) you can change it to x² by flipping the fraction and taking reciprocal: 1/(x⁻²) = 1/(1/x²) = x²

Note that when you have a negative exponent in the denominator, it means that the variable is in the denominator and the reciprocal can be taken to move the variable to the numerator, as shown above.

Thus, we can solve the given questions as follow:

1/(2⁻³) = 2³ = 8

1/(2x⁻³) = (1/2)x³

4/(2(3⁻³)) = (4/2)×3³ = (2)×3³ = 2 × 27 = 54

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The lower confidence interval of the population mean is 34.16.

To construct a 95% confidence interval for the population mean, we can use the formula:

CI = sample mean ± (z-score)(standard error)

Where the z-score is determined by the level of confidence and can be found using a z-table or calculator. For a 95% confidence interval, the z-score is 1.96.

The standard error can be calculated using the formula:

standard error = population standard deviation / √(sample size)

Substituting the given values, we get:

standard error = 2.9 / √46 = 0.427

Now we can plug in the values into the formula to get the confidence interval:

CI = 35 ± (1.96)(0.427) = 35 ± 0.837

The lower confidence interval of the population mean is obtained by subtracting the margin of error from the sample mean:

lower confidence interval = 35 - 0.837 = 34.16 (rounded to 2 decimal places)

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Answer:

Be more productive

Step-by-step explanation:

This could be a goal

a. The solution to the system of equations that is graphed in the diagram is: (6, -1).

b. This is the point where the lines intersect each other.

To find the solution of the system of equations graphically, we plot the equations as lines on a coordinate plane and look for the point of intersection, which represents the solution to the system. If the lines are parallel, there is no solution, and if they overlap, there are infinitely many solutions.

a. The solution as shown in the graph given is: (6, -1).

b. We know this because the point where the two lines intersect is the solution of a system of equations.

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Answer:

It's number 12

Step-by-step explanation:

I just did the math.

Answer:

9.277

Step-by-step explanation:

It is an irrational number.

Explanation

Since area is length squared, length of a side of a rug is simply the square root of 86.

The square root of 86 is a rational number if 86 is a perfect square. It is an irrational number if it is not a perfect square. Since 86 is not a perfect square, it is an irrational number.

Hope this answer will help!

Answer: (-5,8)

Step-by-step explanation:

X: 1 + (-6) = -5

Y: 2+6 = 8

Answer:

5/12, $10

Step-by-step explanation:

Lea earned $24 babysitting. She spent ⅔ of that amount on a gift for her bestie, ¼ on snacks. What fraction of her earning is left? How much money does she have left?

Let the total amount earned be 1

Given

Amount on snacks = ¼

Amount on babysitting = ⅔

Required

Fraction left

Fraction left = Total -(snacks+babysitting)

Fraction left = 1-(1/4+2/3)

Fraction left = 1-(3+4/12)

Fraction left = 1-7/12

Fraction left = 5/12

Amount of money she has left = 5/12 × 24 = 5×2 = $10

Hence she has $10 left

The non-recursive formula t(k) = 2t(k-1) - 1 (k > 1) is given, and we are given the initial condition t(3) = 1. To find the value of t(5), we can use the non-recursive formula

We are given the non-recursive formula t(k) = 2t(k-1) - 1 (k > 1) with the initial condition t(3) = 1. To find t(5), we can use the non-recursive formula to compute the subsequent terms.

Using the formula, we can calculate t(4) as follows:

t(4) = 2t(4-1) - 1= 2t(3) - 1= 2(1) - 1= 1.

Similarly, we can find t(5) using the formula:

t(5) = 2t(5-1) - 1= 2t(4) - 1= 2(1) - 1= 1.

Therefore, the value of t(5) is 1, obtained by applying the non-recursive formula to the given initial condition and recursively computing the subsequent terms in the sequence.

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Answer:

Adam payed $4.25 for 5 lbs of walnuts.  The equation for this is 5.75p-4.50

Step-by-step explanation:

The reason this is the eqaution is because 5.75 is the price per pound. "p" represents how many pounds and -4.50 is the coupon.

Answer:

m = 3/5

Step-by-step explanation:

Slope Formula: \(m=\frac{y_2-y_1}{x_2-x_1}\)

Step 1: Find 2 coordinates

(0, 80)

(-50, 50)

Step 2: Find slope m

m = (50 - 80)/(-50 - 0)

m = -30/-50

m = 3/5

Answer:

chart.

Step-by-step explanation:

ah yes chart.

Answer:

7/20

Step-by-step explanation:

So first we know that there are a total od 25 students

15+10=25

And the probability of choosing the first girl is 15/25 or 3/5 simpler terms.

Now to be able to choose another girl in a row just multiply the then probability

So we started off with 25, if a girl was choosen, the population would b 24

and with 24, there is a missing girl so instead of 15 it is 14

now 14/24 or 7/12 simplified

multiply the two

7/12*3/5=21/60

Simplified

7/20

Answer:

x=5 y=1

Step-by-step explanation:

Like x^2-4x+3=0 or sin(x)=1.

short answer is that x equals 1.

Answer:

Astronomers directly use geometry in their work rather than accountants , judges, pharmacist and politicians.

They used geometry to measure velocity , direction, distance, relativity, momentum, and probability. They used it to look at objects in the sky with a telescope by setting a required angle to get a proper view .

But Accountants, judges, pharmacist and politicians are not in use of geometry directly or frequently.

Hence, Option 'B' is correct.

Step-by-step explanation:

Answer: b

Step-by-step explanation:

Answer:

 8 /4 = 2

answer: each apple cost 2$

Answer:

$4.50.

Step-by-step explanation: Since the market is selling 8 apples for $4, we can determine that one apple is 50 cents. Knowing that information, we can apply that same rule to 9 apples, resulting in a total of $4.50. Hope this answered your question.

Answer: D

Step-by-step explanation:

-3x + 1 < 7

subtract 1 from both sides

-3x < 6

divide each side by -3

x > -2 (flip the greater than/less than sign because you divided by a negative)

-2 is not included so it is an open dot, and answers include all numbers greater than -2 so the answer will be D. Hope this helps!

Answer:

Option D

Step-by-step explanation:

–3x + 1 < 7

Isolate x by subtracting 1 from both sides of the inequality:

–3x + 1 – 1 < 7 – 1

–3x + 0 < 6

Simplify –3x < 6 by dividing both sides of the inequality by –3:

\(\frac{-3x}{-3} < \frac{6}{-3}\)            

Use Division property of inequality, which reverses the inequality symbol when dividing both sides of the inequality by a negative number. Therefore:

\(\frac{-3x}{-3} > \frac{6}{-3}\)  

x > – 2

Solution: x > –2

Interval notation:  [(–2, ∞)]

Answer:

12

Step-by-step explanation:

Sum means addition. 3 + 3 + 6 = 12

Answer:

12

Step-by-step explanation:

i hope this is what you meant

The probability of success (p) would be 0.30 and the probability of failure (q) would be 0.70.

Binomial distributions are probability distributions of the number of successes in a fixed number of trials.

The probability of success (p) and the probability of failure (q) must remain the same for each trial.

The probability of success and failure can be represented as a proportion, a percentage, or a decimal.

The sum of the probabilities of success and failure must equal 1.

The mean of the binomial distribution is equal to np.

Where n is the number of trials and p is the probability of success.

The standard deviation of the binomial distribution is equal to npq, where n is the number of trials, p is the probability of success, and q is the probability of failure.

The z-table can be used to calculate the probability of a given number of successes or failures in a binomial distribution.

The sampling distribution of this study would be a binomial distribution, as it is a study of the proportion of first-time customers out of 100 orders.

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A z-score of 2.14 indicates that Katie's score on the test is quite high and unusual, and places her in the top 2% of the scores in the population.

Katie scored a 93 on a test and her calculated z score was 2.14, that means that her score is 2.14 standard deviations above the mean of the test scores.

A z score represents the number of standard deviations a data point is from the mean of the data set.

A positive z score means that the data point is above the mean, while a negative z score means that the data point is below the mean.

The mean of the test scores was, 80 with a standard deviation of 5, then Katie's z score would be calculated as:

z = (x - μ) / σ

= (93 - 80) / 5

= 2.6

Z scores are useful for comparing data points from different data sets or for comparing data points within the same data set that are measured on different scales.

Katie's score is 2.6 standard deviations above the mean.

A z score of 2.14 would mean that Katie's score is slightly below this value, but still significantly above the mean.

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A systematic sample is a sampling method in which members from a population are selected in a regular and systematic way.

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The frequency distribution table of the data is illustrated below.

The data we have been given represents the percentage of people who have completed 4 or more years of college education in different states. To create a frequency distribution, we need to first decide on the number of classes we want to use. In this case, we will use 7 classes.

Next, we need to determine the range of values for each class. To do this, we first find the minimum and maximum values in the data set, which are 18.9 and 37.9, respectively.

The range of values for each class will be (max value - min value) / number of classes, which in this case is (37.9 - 18.9) / 7 = 2.86.

We will start with the first class, which will include all values from 18.9 to 21.76 (the lower limit of the first class plus the range of values for each class). The next class will include values from 21.76 to 24.62, and so on, until we reach the final class which will include all values from 33.18 to 36.04 (the upper limit of the final class plus the range of values for each class).

To create the frequency distribution, we count the number of values in the data set that fall into each class. For example, the first class includes values between 18.9 and 21.76, and there are 2 values in the data set that fall into this range (21.4 and 20.0). We continue this process for each class until we have a table that shows the frequency of values in each class.

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Complete Question:

Percentage of People Who Completed 4 or More Years of College Listed by state are the percentages of the population who have completed 4 or more years of a college education. Construct a frequency distribution with 7 classes.

21.4,26.0,25.3,19.3,29.5,35.0,34.7,26.1,25.8,23.4,27.1,29.2,24.5,29.5,22.1,24,3,28.8,20,0,20.4,26.7,35.2,37.9,24.7,31.0,18.9,24.5,27.0

You will be required to pay $130.92 in interest. So, option 2 is correct.

Simple interest is calculated using the following formula: Simple Interest (SI) is calculated as P R T / 100. P stands for the principal sum, R for the interest rate, and T for the interest period. The total amount due is the sum of the principal plus the simple interest, or P + SI.

This specific percentage represents the loan's interest rate. The cost of borrowing money is called interest, and it is usually expressed as a percentage, such as an annual percentage rate (APR). Interest may be paid to lenders for the use of their money.

You shell out $875.00 for a PC plus 5% sales tax.

Thus, the final price is 875+(0.05875)

= $918.75.

Rate per month: 14.25/12/100

= 0.011875

So, the rate for a year is 12 x 0.011875

=$130.92.

Therefore, you will be required to pay $130.92 in interest.

Hence, option 2 is correct.

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The price elasticity of demand at the equilibrium point is approximately -0.99.

To find the equilibrium price, we need to set the demand equal to the supply:

2272 - 19p = -3 + 6p

Solving for p, we get:

25p = 2275

p = 91

Therefore, the equilibrium price is $91.

To find the equilibrium quantity, we can substitute the equilibrium price into either the demand or supply function:

Q = 2272 - 19(91) = 1743

Therefore, the equilibrium quantity is 1743 widgets.

To find the price elasticity of demand at the equilibrium point, we can use the formula:

E_d = (p/Q)(dQ/dp)

At the equilibrium point, p = 91 and Q = 1743. Taking the derivative of the demand function with respect to p, we get:

dQ/dp = -19

Substituting in p and Q, we get:

E_d = (91/1743)(-19) = -0.99

Therefore, the price elasticity of demand at the equilibrium point is approximately -0.99.

To find the price elasticity of supply at the equilibrium point, we can use a similar formula:

E_s = (p/Q)(dQ/dp)

Taking the derivative of the supply function with respect to p, we get:

dQ/dp = 6

Substituting in p and Q, we get:

E_s = (91/1743)(6) = 0.30

Therefore, the price elasticity of supply at the equilibrium point is approximately 0.30.

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Answer: 210

Explanation:

Recall that the perimeter is the distance around the figure. It's the amount of fencing needed to enclose such a shape.

Add up all three sides and set the sum equal to the perimeter 70. Then solve for x.

side1+side2+side3 = perimeter

(3x)+(3x-1)+(4x+1) = 70

10x = 70

x = 70/10

x = 7

We can then calculate each side

Notice how 21+20+29 = 70 to confirm we have the correct side lengths.

Once we know the horizontal and vertical leg (aka base and height), we can find the area.

Area = 0.5*base*height

Area = 0.5*21*20

Area = 210 square cm

Step-by-step explanation:

first you have to find x . Then you can add them and equal them with triangle area.

The area to the right of z = -1 for the standard normal distribution is approximately 0.8413.

a. To find the area to the right of z = -1 for the standard normal distribution, we need to calculate the cumulative probability using the standard normal distribution table or a statistical calculator.

From the standard normal distribution table, the area to the left of z = -1 is 0.1587. Since we want the area to the right of z = -1, we subtract the left area from 1:

Area to the right of z = -1 = 1 - 0.1587 = 0.8413

Therefore, the area to the right of z = -1 for the standard normal distribution is approximately 0.8413.

b. To answer this question, we would need additional information about the mean and standard deviation of the annual salaries for first-year college graduates. Without this information, we cannot calculate specific probabilities or make any statistical inferences.

If we are provided with the mean (μ) and standard deviation (σ) of the annual salaries for first-year college graduates, we could use the properties of the normal distribution to calculate probabilities or make statistical conclusions. Please provide the necessary information, and I would be happy to assist you further.

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Answer:

9

Step-by-step explanation:

8.547  =  9.000

Answer:

\(\huge\boxed{x = 36\°}\)

Step-by-step explanation:

According to secant angle theorem:

\(x = \frac{1}{2} (mCDF-mBJH)\)

Where mCDF = 140 , mBJH = 68

\(x = \frac{1}{2} (140-68)\)

\(x = \frac{1}{2} (72)\)

x = 36°

Answer:

Your answer is 2 1/2.

Step-by-step explanation:

Divide 9 pounds of sand into 4 buckets, or 9÷4. This equals 2.5 pounds of sand in each bucket.

Answer:

2 1/4

Step-by-step explanation:

Based on the given conditions, formulate: 9/4

Evaluate the equation/expression: 2.25

get the result: 2.25

Answer: 2.25

2 1/4