Find the inverse function (on the given interval, if specified)
f(x) = x² + 1 for x 20
Find the inverse function.
f'(x)= for x2

Answer:

The father is 40 and his son is 10

Step-by-step explanation:

Answer:

6 just 6

Step-by-step explanation:

6 is the greatezst and the all have the common factor of 6

Answer:

5/6hour=5/6×60=300/6=50

8tasks in 50minutes

1task=50/8=61/4minutes

A)robot completes task in 61/4minutes

B)#tasks per hour

#of tasks×time tasks to do task<or=60

no×6.25=60

6-25n=60

n=60/6.25=96

A robot can complete a tasks in one hour

Answer: 부동산 수수료 계산기 에 의해 작동 계산 하는 간단한 방정식을 : 합의 된 지급 비율 속성의 / 100 × 가격을. 예를 들어 주택 소유자가 주택을 $ 200,000에 판매하고 수수료율 이 5 % 인 경우 방정식 은 (5/100) x 200,000 = $ 10,000 수수료가 됩니다.2020 년

Step-by-step explanation:

Answer:

a) A sample of 256 was used in this survey.

b) 45.14% probability that the point estimate was within ±15 of the population mean

Step-by-step explanation:

This question is solved using the normal probability distribution and the central limit theorem.

Normal probability distribution

When the distribution is normal, we use the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

a. How large was the sample used in this survey?

We have that [tex]s = 25, \sigma = 400[/tex]. We want to find n, so:

[tex]s = \frac{\sigma}{\sqrt{n}}[/tex]

[tex]25 = \frac{400}{\sqrt{n}}[/tex]

[tex]25\sqrt{n} = 400[/tex]

[tex]\sqrt{n} = \frac{400}{25}[/tex]

[tex]\sqrt{n} = 16[/tex]

[tex](\sqrt{n})^2 = 16^2[tex]

[tex]n = 256[/tex]

A sample of 256 was used in this survey.

b. What is the probability that the point estimate was within ±15 of the population mean?

15 is the bounds with want, 25 is the standard error. So

Z = 15/25 = 0.6 has a pvalue of 0.7257

Z = -15/25 = -0.6 has a pvalue of 0.2743

0.7257 - 0.2743 = 0.4514

45.14% probability that the point estimate was within ±15 of the population mean

Answer: 1:1 or 2:1

Step-by-step explanation:

Answer:

rthtrhthrrgrg4432

Step-by-step explanation:

rthrthtrhtrhr242 42

Answer:

i got a whole lotta math questiosn to ask, answer them for me I give u bigger points

Step-by-step explanation: please n thanks man

Answer:

Can you please answer my question?

Step-by-step explanation:

https://brainly.com/question/20988596

Answer:

2

Step-by-step explanation:

The slope of the line with equation y=2x+3 is 2 . So, any line parallel to y=2x+3 has the same slope 2 .

Hello!

Parallel lines have the same slope. So if one line has a slope of 2, the line parallel to it has a slope of 2 as well.

Therefore, the slope is 2. Hope it helps.

If you have any questions, feel free to ask.

~A forlorn teen

[tex]MagicalNature[/tex]

Answer:

The capability index for the process is 0.889

Step-by-step explanation:

Here, we want to compute the capability index for the process

To get this, we need some important parameters which we already have stated in the question

USL ( upper standard limit) = 0.048

LSL (lower standard limit) = 0.032

mean = 0.04

standard deviation = 0.003

We apply the formula as seen in the attachment below

Kindly understand that we are to calculate the Z upper and Z lower

The smallest value between the two will be our Z minimum

This is what we shall apply in the capability index formula which mathematically is;

Z minimum/3

From calculation:

Z lower = Z upper = 2.67

So therefore;

capability index = 2.67/3 = 0.889

Answer:

4.5m^2

Step-by-step explanation:

Step one:

The shape of the pool can be either a square or a rectangle.

We want to find the area of the pool

The area of a square or rectangle is expressed as

A= length * width

Step two

say the dimensions given are

L= 3m

W= 1.5m

Then area

A= 3*1.5

A= 4.5m^2

Answer:

The roots of the polynomial are;

3 + 2i

and 3-2i

Step-by-step explanation:

Here, we want to solve the given polynomial using the completing the square method

We start by dividing through by 8

This will give;

x^2 - 6x = -13

To complete the square, we simply divide the coefficient of x by 2 and square it

We have this as -6/2 = -3

square it;; = (-3)^2 = 9

Add it to both sides

x^2 - 6x + 9 = -13 + 9

x^2 - 6x + 9 = -4

(x-3)^2 = -4

Find the square root of both sides

x-3 = ±2i

x = 3 + 2i

or x = 3-2i

Answer:

Here's just the answers without all the work for easier reading. Answers are bolded.

Step-by-step explanation:

First problem answer: x2 + -6 x = -13

Second problem answer: x2 – 6x + 9 = –13 + 9

Third problem answer: (x + -3)² = -4

Fourth problem answer: 3 + 2i

Answer:

The point (-2, -4) is a minimum.

Hence, option A is correct.

Step-by-step explanation:

We know that graph of a Parabola illustrates a U-shaped curve.

The graph of Parabola has an important characteristic, it consists of an extreme point which is termed as 'vertex'.

When a parabola opens up, the vertex will be the lowest point on the Parabola graph.

When a parabola opens up, the vertex will be the lowest point on the Parabola graph. This lowest point is the minimum value of the parabola function.

From the given Parabola graph, it is clear that the parabola opens up.

Thus, the vertex will be the lowest point on the Parabola graph which is also the minimum value.

It is clear that the vertex of the parabola is located at (-2, -4).

Therefore, the point (-2, -4) is a minimum.

Hence, option A is correct.

Answer:

$ 59.5

Step-by-step explanation:

Calculation for how much is the store's profit

First step is to calculate the store's cost

Store's cost= 170/100 * $85

Store's cost =$144.5

Now let calculate the store's profit

Store'sProfit=$144.5-$85

Store's Profit=$ 59.5

Therefore the store's profit will be $59.5

Answer:

I would want to say 11.6

Step-by-step explanation:

I divide 29 by 2.5= 11.6.

Answer:A) Y = 0.65x + 105

B) An Increasing Slope

C) Slope = 0.65 Y-Intercept = 105

Hope this helps you!

Step-by-step explanation:

Answer:

1. x = 9.5

Step-by-step explanation:

Number one.

[tex] {a}^{2} + {b}^{2} = {c}^{2} \\ {8.6}^{2} + {b}^{2} = {12.8}^{2} \\ 73.96 + {b}^{2} = 163.84 \\ \frac{ - 73.96 \: \: \: \: \: \: \: \: \: \: = - 73.96}{ {b}^{2} = \sqrt{89.88} } \\ b = 9.5[/tex]

a = leg

b = leg

c = hypotenuse/diagonal

Answer:

50%

Step-by-step explanation:

1.2 times 50 = 60

60 - 40 = 20

40/20 = 2

100/2 = 50

50%

The percentage of the profit when he sells them for $1.20 will be 50%.

The amount of any product is given as though it was a proportion of a hundred. The ratio can be expressed as a quarter of 100. The phrase % translates to one hundred percent. It is symbolized by the character '%'.

The percentage is given as,

Percentage (P) = [Final value - Initial value] / Initial value x 100

A dealer buys 50 apples for $40. Then the cost of each apple is given as,

⇒ $40 / 50

⇒ $0.80 per apple

Then the percentage of the profit is calculated as,

P = [($1.20 - $0.80) / $0.80] x 100

P = ($0.40 / $0.80) x 100

P = 0.50 x 100

P = 50%

The percentage of the profit when he sells them for $1.20 will be 50%.

More about the percentage link is given below.

https://brainly.com/question/8011401

#SPJ2

Answer:

88.89%

Step-by-step explanation:

Calculation for what is the minimum percentage of quiz scores between 4.8 and 8.4

The calculated minimum percentage value of quiz scores between

First step is to calculate the lower k value using this formula

k=(x1−m)/s

Where:

x1 represent first random value 4.8

x2 represent second random value 8.4

m represent mean 6.6

s represent standard deviation 0.6

Let plug in the formula

k=(4.8−6.6)/0.6

k=−1.8/0.6

k=−3

Second step is to calculate the upper k value

k=(x2−m)/s

k=(8.4−6.6)/0.6

k=1.8/0.6

k=3

Now let calculate the minimum percentage

Using this formula

Minimum percentage=1−1/k^2

Let plug in the formula

Minimum percentage=1−1/3^2

Minimum percentage=1−1/9

Minimum percentage=1−0.1111

Minimum percentage=0.8889*100

Minimum percentage=88.89%

Therefore the minimum percentage of quiz scores between 4.8 and 8.4 is 88.89%

Answer:

75%

Step-by-step explanation:

5.2−6.40.6=−2  and 7.6−6.40.6=2.

This means that 5.2 lies 2 standard deviations below the mean and 7.6 lies 2 standard deviations above the mean.

According to Chebyshev's Theorem, at least 75% of data values lie within 2 standard deviations of the mean.

Therefore, we can say that 75% is the minimum percentage of quiz scores between 5.2 and 7.6.

Answer:

x = -47

Step-by-step explanation:

(x+16)2 = x-15

2x+32 = x-15

x = -15-32 = -47

Answer:

x=4

Step-by-step explanation:

2x-9=-1

u add 9 on both sides so its 2x=8

then divide by 2 on each side  and it gives u 4

Answer:

x=4

Step-by-step explanation:

You are right

Answer:

4(-20x+7y-14) .. only one option correct

Step-by-step explanation:

8(-10x+3.5y-7) = -80x + 28y -56

4(-20x+7y-14) = -80x +28y -56

Answer:

Point E

Step-by-step explanation:

You can look how they intersected E in the middle

Answer:

No, it isnt a proportional relationship relationship. False.

Answer:

The two problems/expressions are the same because of the negative and positive rule.

Step-by-step explanation:

+ - = -

- + = -

- - = +

+ + = +

Answer:  -0.89  1-21 0.4 1/2 9/8

Step-by-step explanation:

Answer:

1-21, -0.89, 1/2, 0.4, 9/8

Step-by-step explanation:

Answer:

0.75%

Step-by-step explanation:

Total amount to generate at fundraiser = $8000

Amount donated by Bethany family = $60

The percentage of Bethany's donation towards the fundraiser is :

Let percentage = x

x% of 8000 = 60

x/100 * 8000 = 60

0.01x * 8000 = 60

80x = 60

Divide both sides by des by 80

80x / 80 = 60 / 80

x = 0.75