need this done today

Answer:

x=3

i=74

That is my answer. I think, not 100% sure though.

Answer:

Step-by-step explanation:

Since more people = faster and less time, I would say 288 minutes.

Therefore, the probability that the person's height is between 62 and 68 inches is approximately 0.7977.

A. X ~ N(64, 2.3)

B. To find the probability that the person's height is between 62 and 68 inches, we can calculate the z-scores corresponding to these values and then use the standard normal distribution table or a calculator.

For 62 inches:

z = (62 - 64) / 2.3

≈ -0.87

For 68 inches:

z = (68 - 64) / 2.3

≈ 1.74

Using the standard normal distribution table or a calculator, we can find the corresponding probabilities for these z-scores and subtract the lower probability from the higher probability to find the probability between 62 and 68 inches.

P(62 < X < 68) ≈ P(-0.87 < Z < 1.74)

Using the standard normal distribution table or a calculator, we find the probability to be approximately 0.7977.

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The 98% confidence interval for the number of chocolate chips per cookie in Big Chip cookies is approximately 13.5529 to 15.0471 chips.

To find the 98% confidence interval for the number of chocolate chips per cookie in Big Chip cookies, we'll use the t-distribution since the sample size is relatively small (n = 61) and we don't know the population standard deviation.

The formula for the confidence interval is:

\(CI = \bar X \pm t_{critical} \times \dfrac{s } {\sqrt{n}}\)

where:

X is the sample mean,

\(t_{critical\) is the critical value for the t-distribution corresponding to the desired confidence level (98% in this case),

s is the sample standard deviation,

n is the sample size.

First, let's find the critical value for the t-distribution at a 98% confidence level with (n-1) degrees of freedom (df = 61 - 1 = 60). You can use a t-table or a calculator to find this value. For a two-tailed 98% confidence level, the critical value is approximately 2.660.

Given data:

X (sample mean) = 14.3

s (sample standard deviation) = 2.2

n (sample size) = 61

\(t_{critical\) = 2.660 (from the t-distribution table)

Now, calculate the confidence interval:

\(CI = 14.3 \pm 2.660 \times \dfrac{2.2} { \sqrt{61}}\\CI = 14.3 \pm 2.660 \times \dfrac{2.2} { 7.8102}\\CI = 14.3 \pm 0.7471\)

Lower bound = 14.3 - 0.7471 ≈ 13.5529

Upper bound = 14.3 + 0.7471 ≈ 15.0471

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Answer:

5) 119 degrees

6) 25 degrees

7) 45 degrees

8) 115 degrees.

Answer:

put the yes in the second box, fourth box, and fifth box.

Step-by-step explanation:

trust me, your welcome

Answer:

A (0, 0).

Step-by-step explanation:

y = x

y = -x

Therefore x = -x.

x + x = 0

x = 0

and y = x = 0.

Answer:

Which ordered pair is a solution to the following linear system?

y = x

y = –x

(1, 1)

(0, 1)

(1, 0)

Correct Answer

(0, 0)

Step-by-step explanation:

just did this on a test.

Given:

A certain function h(x) contains the point (8,-2).

To find:

The value of \(h^{-1}(-2)\).

Solution:

If a function is defined as

\(f(x)=\{(a,b):a\in R,b\in R\}\)

Then, its inverse is defined as

\(f^{-1}(x)=\{(b,a):a\in R,b\in R\}\)

It is given that, a certain function h(x) contains the point (8,-2). It means, its inverse \(h^{-1}(x)\) contains the point (-2,8). So, the value of inverse function is 8 at x=-2, i.e.,

\(h^{-1}(-2)=8\)

Therefore, the value of \(h^{-1}(-2)\) is 8.

Answer:

WHAT THATS EASY

Step-by-step explanation:

10000=104, 10 = 100

10 to the 4th power

have a good day

Answer:

Apple = Rs90

Grape = Rs70

Step-by-step explanation:

Given

Represent Apples with A and Grapes with G

Such that:

The ratio is

\(A : G =9:7\)

And the price is

\(A = 20 + G\)

Required

Determine the cost of 1 kg of each fruit

\(A : G =9:7\)

Convert to fraction

\(\frac{A}{G} = \frac{9}{7}\)

Cross Multiply

\(7A = 9G\)

Make A the subject

\(A = \frac{9}{7}G\)

Substitute \(\frac{9}{7}G\) for A in \(A = 20 + G\)

\(\frac{9}{7}G = 20 + G\)

Collect Like Terms

\(\frac{9}{7}G - G = 20\)

Take LCM

\(\frac{9G - 7G}{7}= 20\)

\(\frac{2G}{7}= 20\)

Multiply through by 7

\(7 * \frac{2G}{7}= 20 * 7\)

\(2G= 20 * 7\)

Divide through by 2

\(\frac{2G}{2} = \frac{20 * 7}{2}\)

\(G = \frac{20 * 7}{2}\)

\(G = 10 * 7\)

\(G = 70\)

Substitute 70 for G in \(A = \frac{9}{7}G\)

\(A = \frac{9}{7} * 70\)

\(A = 9 * 10\)

\(A = 90\)

The net area A of the parametric curve f(t) from 0 ≤ t ≤ 1 is (1/3)e.

To find the net area A of the parametric curve f(t), we can use the concept of definite integration. Since the curve is defined by the parametric equations x = t^(2/3) and y = t^2e^(t^(1/3)), we need to integrate the y-coordinate with respect to the x-coordinate within the given range of t.

First, we need to express t in terms of x to determine the limits of integration. From the equation x = t^(2/3), we can solve for t as t = x^(3/2). Therefore, the limits of integration become x = 0 and x = 1^(2/3) = 1.

Next, we integrate the y-coordinate with respect to x within the given limits. The integral becomes ∫(t^2e^(t^(1/3))) dx, where t is replaced by x^(3/2). Simplifying the expression, we have ∫(x^(3/2))^2 * e^(x^(3/2)^(1/3)) dx, which further simplifies to ∫x^3 * e^(x^(1/2)) dx.

Evaluating this integral from x = 0 to x = 1, we obtain the net area A = (1/3)e.

Therefore, the net area A of the parametric curve f(t) from 0 ≤ t ≤ 1 is (1/3)e.

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Answer:

A: (-2, 0.5)

B: (0,0.5)

C: (0.5,-0.5)

D: (-1.5, -0.5)

Step-by-step explanation:

When dilating about the origin, the distance of each point from the origin changes by the scale factor. For example, if you had a point that was 4 units above the center of dilation, and a scale factor of 1/2, the point would change to be 2 units above the center of dilation, because 1/2 x 2.

To find the image of parallelogram ABCD after a dilation with center (0,0) and a scale factor of 1/2, we need to apply the following transformation to each of the vertices of the parallelogram:\((x, y) to (\frac{1}{2} x, \frac{1}{2}y)\) So, for vertex A (a, b), the image will be (1/2a, 1/2b). Similarly, for vertex B (c, d), the image will be (1/2c, 1/2d), and so on.Therefore, the coordinates of the image of parallelogram ABCD will be:

A' (1/2a, 1/2b)

B' (1/2c, 1/2d)

C' (1/2e, 1/2f)

D' (1/2g, 1/2h)

where A (a, b), B (c, d), C (e, f), and D (g, h) are the coordinates of the vertices of parallelogram ABCD.

Now, to solve this, we input the coordinates.

A has coordinates of (-4,1). 1/2(-4) = -2 and 1/2(1) = 0.5, so A is (-2, 0.5)

B has coordinates of (0,1). 1/2(0) = 0 and 1/2(1)= 0.5. B is  (0, 0.5)

C has coordinates of (1,-1). 1/2(1) = 0.5 and 1/2(-1) = -0.5. C is (0.5, - 0.5)

D has coordinates of (-3,-1). 1/2(-3) = -1.5 and 1/2(-1) = -0.5. D is (-1.5, -0.5)

Let me know if this helped by hitting thanks or brainliest! If you have any questions, comment below and I'll get back to you ASAP.

The coordinates of the image of parallelogram ABCD after a dilation with center (0, 0) and a scale factor of 1/2 are A'(-2, 0.5), B'(0, 0.5),   C'(0.5, -0.5) and D'(-1.5, -0.5).

Dilation is the process of resizing or transforming an object. It is a transformation that makes the objects smaller or larger with the help of the given scale factor. The new figure obtained after dilation is called the image and the original image is called the pre-image.

Given that, the scale factor is 1/2.

Here, vertices of parallelogram ABCD is A(-4, 1), B(0, 1), C(1, -1) and D(-3, -1).

After dilation we get,

A(-4, 1) → 1/2(-4, 1) → A'(-2, 0.5)

B(0, 1) → 1/2(0, 1) → B'(0, 0.5)

C(1, -1) → 1/2(1, -1) → C'(0.5, -0.5)

D(-3, -1) → 1/2(-3, -1) → D'(-1.5, -0.5)

Therefore, the coordinates of the image of parallelogram ABCD after a dilation with center (0, 0) and a scale factor of 1/2 are A'(-2, 0.5), B'(0, 0.5),   C'(0.5, -0.5) and D'(-1.5, -0.5).

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Answer:

Part A

1) Line

2) Angle

3) Point

4) Line Segment

5) Ray

6) Plane

Part B

1) Line Segment

2) Draw number 3 in part a times 2 with different letters

We can observe that the series is an alternating series, where the terms alternate in sign. Therefore, we can use the Alternating Series Test to determine convergence or divergence. The Alternating Series Test states that if a series alternates in sign, and the absolute value of each term in the series decreases and approaches zero, then the series converges.

In this case, the absolute value of each term is 5/6, 5/8, 5/10, etc. We can see that the denominators are increasing by 2 each time, so the absolute value of each term is decreasing and approaching zero. Therefore, we can apply the Alternating Series Test.

The Alternating Series Test also states that we must check if the limit of the absolute value of the terms is zero. We have:

lim (n→∞) 5/(2n) = 0

Since the limit of the absolute value of the terms is zero, and the series alternates in sign and the absolute value of each term decreases, the series converges.

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The correct range of value for the included angle of a V-belt is 30° to 40°. The V-belt provides power to the drive pulley. In the mechanical power transmission, V-belts are used in a large number of industrial and farm applications.

The V-belt is used for a smooth transition of power, and it is made from rubber and polymer materials with cords in the inside. It is commonly used in industrial machines, and it is easy to install and maintain. It is also used in power transmission with a high level of flexibility.

The correct range of value for the included angle of a V-belt is 30° to 40°.This angle is produced by joining the planes of the faces of the belt in the V section. It is the angle between the V-belt sides. The recommended value for the included angle of the V-belt is 36.5 degrees.

When the value is within this range, the V-belt functions optimally. A low included angle would result in a loose belt, whereas a high angle would result in a tight belt. In power transmission, V-belts are commonly used in a wide range of industrial and farm applications. The V-belt is used to provide power to the drive pulley. It is an essential mechanical component that ensures a smooth transition of power.

It is made of rubber and polymer materials, which make it durable and flexible. The V-belt's flexibility allows it to transmit power between pulleys located at different angles.The included angle is the angle between the sides of the V-belt. This angle is produced by joining the planes of the faces of the belt in the V section. The range of value for the included angle of a V-belt is 30° to 40°. The recommended value for the included angle of the V-belt is 36.5 degrees. When the included angle value is within this range, the V-belt functions optimally.

A low included angle would result in a loose belt, whereas a high angle would result in a tight belt.The V-belt's flexibility allows it to transmit power between pulleys located at different angles. The V-belt's grip on the pulley is an essential factor that affects the transmission of power. A low included angle would reduce the grip of the belt, resulting in slippage and reduced power transmission. In contrast, a high included angle would increase the grip of the belt, resulting in a higher level of power transmission.

The correct value of the included angle is critical to the V-belt's performance and longevity.

The correct range of value for the included angle of a V-belt is 30° to 40°. The recommended value for the included angle of the V-belt is 36.5 degrees. When the included angle value is within this range, the V-belt functions optimally. A low included angle would result in a loose belt, whereas a high angle would result in a tight belt. The V-belt's flexibility allows it to transmit power between pulleys located at different angles. The V-belt's grip on the pulley is an essential factor that affects the transmission of power.

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Answer:

My guess would be -0.1 and 1/4

Step-by-step explanation:

-0.1 is greater than -0.2 and 1/4 is greater than -0.1 but less than 1/2.

Answer:5/5x-15/x

Step-by-step explanation:

Answer: your answer should be 3x^2 + 10x -75 / 5x.

Step-by-step explanation:

1. Combine multiplied terms into a single fraction

2. Find common denominator

3. Combine fractions with common denominator

4.  Multiply the numbers

5. Re-order terms so constants are on the left

6. Combine exponents

7. Multiply the numbers

8. Rearrange terms

therefore hopefully giving you the answer of 3x^2 + 10x -75 / 5x.

Answer:

-130

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Area = 1/2 a * p

Multiply both sides by 2

2*A = ap

Divide by p

2A / p = a

D

Answer: D

Step-by-step explanation:

Given

The table,

The sample size is 27.

To find:

The mean weight of these 27 babies.

Explanation:

It is given that,

That implies,

The mean weight of 27 babies is,

Hence, the mean weight of 27 babies is 6.1 pounds.

The number of organisms (n) at any time is proportional to the initial number organisms (n0) is True.

The equation for growth of bacterial cells after n number of generations is -

N = No 2n

Where N = final number of cells.

No = initial number of cells

n = number of generations

As clear from the equation, the value of N depends on the initial number of cells in a population. Or we can say, N is directly proportional to No. Therefore, the statement is true.

Given that the population of bacteria has grown from 2.2*104 CFU/g to 2.2*107 CFU/g in a week (7 days).

The number of generations passed after 7 days can be calculated as -

N = No 2n

Putting values, we get

2.2*107 = 2.2*104 * 2n

2n = 103

Taking log of both sides,

n log 2 = log 103

n = 3/0.3

n = 10

S, after one week, 10 generations are passed.

Now we need to take final population of bacteria after one week to be 2.2*105 CFU/g.

Putting values in equation, the initial number of cells can be calculated as -

2.2*105 = No *210

No = 2.2*105 / 1024

No = 177,419.

Therefore, we need to keep initial population of 177,419 CFU/g to increase the shelf life of food.

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Complete question:

1. The number of organisms (N) at any time is proportional to the initial number organisms (No)? a. True b. False 2. Your first job out of college is working for Ricky's Risky Ready-To-Eat Foods. As a microbiologist for the company, you are tasked with extending the shelf-life of the company's leafy greens salad mixes. You find that a salad mix has an initial total plate count of 2.2 x 104 CFU/g (colony forming units per gram). After one week of refrigerated storage, the count reaches an unacceptable level of 2.2 x 107 CFU/g. You decide that an acceptable level of 2.2 x 105 CFU/g could be achieved if the initial count were lower. What starting level of bacteria would you need to achieve this goal?

Answer:

\(a_5 = \frac{17}{20}\)

Step-by-step explanation:

Use the general progression formula where

\(d=\frac{3}{20}\\a_n=\frac{1}{4}+\frac{3n-3}{20}\)

Solving this for the 5th term returns the answer

\(a_5=\frac{17}{20}\)

Answer:

57in^2

Step-by-step explanation:

Divide the shape into 2 recatngles.

Imagine a line cuts away a rectangle of length 12in by width 4in. from a square  of length (12-9)in. and width (7-4)in

This gives you 2 different shapes

Find their area

Rectangle one has an area of = 12in x 4in = 48in^2

Square has an area of = (12-9) in x (7-4) in = 3x 3 inch = 9in.^2

Find their sum to find the area of the whole compound shape:

48+9 = 57in^2

Hope this helps

Step-by-step explanation:

should be 4

8500x1.05 8925

8925x1.05 9371.25

9361.25x1.05 9839

9839x1.05 10331

Answer:

I guess the answer is 4 years.

Answer:

Step-by-step explanation:

5 + 9 - 2³ ≠ 4²- 6

let's simplify the expression individually on both sides to know the comparison symbol that fits.

Comparison operators are operators that compare values. For example >, <, ≥, ≤, ≠ etc.

Therefore,

6 ≠ 10

Therefore,

5 + 9 - 2³ ≠ 4²- 6

≠ means not equal to.

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Answer:

Given:

148

�

+

231

�

=

527...

�

�

1

148x+231y=527...eq1

and

231

�

+

148

�

=

610...

�

�

2

231x+148y=610...eq2

To find:

Find the value of x and y.

Solution:

Concept to be used:

Add both equations.

Subtract both equations.

Solve new equations to find x and y.