help!!! PLEASE i really need help please answer ASAP i’m so bad at maths

Answer:

2800

Step-by-step explanation:

Answer:

The answer is 323.4

Nearly 1,659 feet of granite was tunnelled through to make tunnel no. 6 through the sierra Nevada mountains.

Early snowfall prevented the Central Pacific from starting construction on Tunnel No. 6, or the Summit Tunnel, in August 1865. It was built using a variety of engineering and construction methods and was located more than seven thousand feet above sea level.

When the workmen finally broke through, they discovered that they were only two inches off from the calculations that were used to locate its end points and central shaft. The length of the tunnel that was built through the Sierra Nevada mountains is therefore given as nearly 1,659 feet of granite was tunnelled through to make tunnel no. 6 through the Sierra Nevada mountains.

Read more about granite on:

https://brainly.com/question/880155

#SPJ4

The correct option is (B) The actual time required to deliver all the items to the baggage claim area based on the number of items unloaded will be very close to the time predicted by a least-squares model.

In order to find the line that is most suitable for a set of data, the least squares method is a type of mathematical regression analysis. It offers a visual representation of the relationship between both the data points.

Some characteristics of least square model are-

To know more about least square model/ regression line, here

https://brainly.com/question/14563186

#SPJ4

The complete question is-

At a large airport, data were recorded for one month on how many baggage items were unloaded from each flight upon arrival as well as the time required to deliver all the baggage items on the flight to the baggage claim area scatter plot of the two variables indicated a Strong; positive linear association between the variables_ Which of the following statements is a correct interpretation of the word ~strong in the description of the association?

(A) least-squares model predicts that the more baggage items that are unloaded from a flight; the greater the time required to deliver the items to the baggage claim area

(B) The actual time required to deliver all the items to the baggage claim area based on the number of items unloaded will be very close to the time predicted by a least-squares model .

(C) The time required to deliver an item to the baggage claim area is relatively constant; regardless of the number of baggage items unloaded from a flight,

(D) The variability in the time required to deliver all items to the baggage claim area is about the same for all flights, regardless of the number of items unloaded from flight

(E) The time required to unload baggage items from a flight is related to the time required to deliver the items to the baggage claim area.

\(5 + n = 12 \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \)

Answer:

Step-by-step explanation:

There are 6 angles, 3 pairs of vertical angles that sum to 360°.

Set below equation and solve for x:

Opposite angles are equal and linear pairs are supplementary

The player's distance from home plate changing at that instant is 37.42 feet per second.

The distance covered by an object in unit time.

First, let's define a few variables.

t = time

x = Distance the player is from third base = 20 feet

dx/dt = Velocity the player is running towards third base = -30 fps

y = Distance between the player and home plate

dy/dt = Rate of change between the player's distance from home plate (This is the answer to our problem)

By Pythagorean theorem

y² = x² + 90²...(*)

Put x = 20

y² = 20² + 90²

y = 92.2 feet

Apply  differentiation to (*)

2ydy/dt = 2xdx/dt + 90²

And let's plug in x, y, and dx/dt to solve for dy/dt.

2(92.2)dy/dt = 2×20×-30 + 90²

dy/dt = 37.42 feet per second

Hence 37.42 feet per second  is the player's distance from home plate changing at that instant

To learn more on Velocity click:

https://brainly.com/question/18084516

#SPJ1

The volume of the medication required, we subtract it from the nebulizer output to find the amount of saline needed.

To determine the amount of saline needed to make the medication last the full hour, we need to calculate the total volume of medication required and subtract it from the volume delivered by the nebulizer.

Given:

- Albuterol dose: 15 mg

- Atrovent dose: 0.5 mg

- Nebulizer output: 10 mL per hour

- Nebulizer flow rate: 4 LPM (liters per minute)

First, we need to convert the nebulizer flow rate to mL per hour:

4 LPM * 60 min = 240 mL per hour

Next, we calculate the total volume of medication required by adding the doses of albuterol and Atrovent:

Total medication volume = 15 mg + 0.5 mg

Now, we need to convert the total medication volume from milligrams to milliliters. To do this, we need to know the concentration of the medication (mg/mL) or the volume of the medication that corresponds to the given dose. Without this information, we cannot convert the dose to volume accurately.

To know more about nebulizer refer here:

https://brainly.com/question/31439516#

#SPJ11

The starting value of an algorithm used to generate a range of numbers is called the Seed where the range is  100 .

Range: the difference between the highest and lowest value. Find the highest observed value of the variable and subtract the lowest observed value to get the range. The range only takes into account these two values; the data points in the middle of the distribution are not taken into account. There is a range of values between the lowest and highest. The range is composed of values at either end. As an illustration, the data set 4, 6, 10, 15, 18, has a range of 18-4 = 14, a maximum of 18, a minimum of 4, and a minimum of 4.

The term "seed" refers to the initial value of an algorithm used to produce a set of integers.

20, 25, 30, 45, 55, 90, 110,115,120

Range = 120 - 20 = 100

To know more about range visit:

brainly.com/question/12789483

#SPJ4

Answer:

1256 in.3

Step-by-step explanation:

V = pi x r^2 x h
V = 3.14 x 20/2 x 4
V = 3.14 x 10 x 4

V = 1256in^3

Answer:

1256 in³

Step-by-step explanation:

To calculate volume of a cylinder the formula is: π · r2 · h

Since Pi is already given to us as 3.14, we now have to find the radius

The radius is always the diameter cut in half meaning it will be 20/2 which gives us 10 (radius is figured)

The height is given to us as 4 meaning the equation will be

3.14 x 10 x 10(seeing as it's radius squared) x 4

10x10 = 100

100 x 4 = 400

400 x 3.14 = 1256

The answer is in cubed(³) because it is volume

Answer:

A glide reflection is a two-step procedure in which the translation normally occurs along the line of reflection after the reflection.

A reflection is a single action, such as the reflection across y = x in the blue pre-image and the black dotted-line picture below.

A glide reflection is a two-step procedure in which the translation normally occurs along the line of reflection after the reflection.

In such situation, the blue pre-image is reflected across y = x and then translated by a factor of two to form the green picture.

The figure appears to be moving along the line after several repetitions.

A sine wave resembles the sine from zero to pi that has been repeatedly translated from "pi, 0" across the x-axis.

See the attachment. (Pre-image in blue Dots indicate reflection. Glider reflection picture is green.)

Cheers,

ROR

Answer:

A glide reflection is a two-step procedure in which the translation normally occurs along the line of reflection after the reflection.

Step-by-step explanation:

Answer:

25% or 1/4 chance.

Step-by-step explanation:

The red makes up 5 out of the 20 marbles in the bag, which translates to 1/4 or 25% chance or being picked.

Good luck! Hope this helped!

Answer:

25% chance or 1/4 or 5/20

Step-by-step explanation:

All of these provided answers are the same.  Since there is 20 marbles and 5 are red you just do 5/20!

Answer:

\(r\geq -18\)

Step-by-step explanation:

\(\frac{-r}{3} \leq 6\\\rule{150}{0.5}\\(\frac{-r}{3})*3\leq 6*3\\\\-r \leq 18\\\\\frac{-r \leq 18}{-1}\\\\\boxed{ r\geq -18}\)

Hope this helps!

Answer:

Below

Step-by-step explanation:

Use triangle side length rule : any two sides must sum to greater than the remaining side

A  nope....   4 + 14 is not GREATER than 18

B  nope  27 + 39  in not greater than 39

C  nope   8 + 8 is not greater than 20

D Yes   13 + 32 > 44     and  13+44>32    and 44+ 32 > 13

Answer:

D. 27

Step-by-step explanation:

sum of exterior angles = 360

2x + 56 + 57 + 85 + 4x = 360

6x + 198 = 360

6× = 360 - 198

6× = 162

× = 27

Answer:

ummm im pretty sure its d

Step-by-step explanation:

Answer:

im pretty sure its last option y=2x

Step-by-step explanation:

on the graph it touches all even numbers

A.Negativ

Answer:

20

Step-by-step explanation:

12 (2 + ) − (4 + )

24-4

=20

Answer:

20

Step-by-step explanation:

Based on the survey results, the probability that a randomly selected participant is an adult (event C) is 0.3575, while the probability that the participant prefers comedies (event D) is 0.405.

To find the probability of event C, we divide the number of adults by the total number of participants in the survey. Since the sample size is 400, let's say the number of adults in the survey is A. The probability of event C can be calculated as P(C) = A/400. However, the exact number of adults is not given in the question, so we cannot determine the exact value.

Similarly, to find the probability of event D, we divide the number of participants who prefer comedies by the total number of participants in the survey. Let's assume the number of participants who prefer comedies is D. The probability of event D can be calculated as P(D) = D/400. Again, the exact value of D is not provided, so we cannot determine the exact probability.

In summary, without knowing the exact number of adults and participants who prefer comedies, we cannot calculate the precise probabilities. However, the values provided in the question for P(C) = 0.3575 and P(D) = 0.405 are assumed to be the correct probabilities based on the given survey results.

Learn more about probability here:

https://brainly.com/question/31828911

#SPJ11

Let's solve the following equation

First, we find the least common factor between the denominators.

8 4 | 2

4 2 | 2

2 1 | 2

1

So, the least common factor would be the product 2x2x2 = 8.

Now, we use the least common factor to subtract the fractions, where the new denominator is 8.

Then, we solve for x

The possible change in volume (in mm3) resulting from the error in measuring the radius is 32. 06 mm³

Given,

A spherical golf ball is measured to have a radius of $$5 mm, with a possible measurement error of $$0.1 mm

How to determine the volume

The formula for volume of a sphere is expressed by;

Volume = 4/3 πr³

Where;

r is the radius of the sphere

pi takes the value 3.14

From the information given, we have that the measured radius is 5 mm, with a possible measurement error of 0.1 mm

Then, radius  a = 5mm

Radius b = 5 + 0. 1 = 5. 01mm

Now, substitute the values into the formula

Volume, v = 4/ 3 (3.14)(5)³

v = 4/ 3 (392.5)

v = 523. 3 mm³

For radius of 5.01mm

Volume =  4/ 3 (3.14)(5.1)³

expand the bracket

Volume = 4/3 (416.52)

Volume = 555. 4 mm³

The change in volume = 555. 4 - 523. 3 = 32. 06 mm³

Hence, the change in volume is 32. 06 mm³

Learn more about Sphere's Volume at:

https://brainly.com/question/9994313

#SPJ4

Answer:

l=-15t+120

Step-by-step explanation:

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

The equation represents representing the amount L owed after t weeks.

L = 120 - 15t

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

Total amount borrowed = $120

Amount left to pay after 2 weeks = $90

This means,

In 2 weeks the amount paid.

= 120 = 90

= $30

The amount paid per week is constant.

2 week = $30

Divide both sides by 2.

1 week = $15

Now,

The equation represents representing the amount L owed after t weeks.

L = 120 - 15t

Thus,

The equation represents representing the amount L owed after t weeks.

L = 120 - 15t

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ5

The equation to model the population is P = \(\frac{1}{40}\) \(e^{0.05t}\) + 30

Here the population P of a small town, measured in hundreds, is modeled by the inverse of the function,P−1(t) = 20ln(40t − 1200)

where t is measured in years.

We need to find an equation to model the population.

let y = \(p^{-1}\)(t)

where t is measured in years.

We need to find an equation to model the population.

20\(ln\)(40y - 1200) = t

\(ln\)(40y - 1200) = t/20

\(e^{ln(40y - 1200)}\) = \(e^{0.05t}\)

(40y - 1200) = \(e^{0.05t}\)

40y = \(e^{0.05t}\) + 1200

y = \(\frac{1}{40}\) \(e^{0.05t}\) + 30

Now, we determine the initial value.

P(0) = \(\frac{1}{40}\) + 30

P(0) = 30

The equation to model the population is P = \(\frac{1}{40}\) \(e^{0.05t}\) + 30

To learn more about equations refer to;

https://brainly.com/question/22688504

#SPJ1

The answer is

Subtract 2 from 5 to get 3.

3x2=6

subtract 7 from -4 to get -11

Add -2 and 4 to get 2.

Fraction  

can be rewritten as −  

by extracting the negative sign.

Convert 6 to fraction 12/2

Since the 2 fractions have the same denominator, subtract them by subtracting their numerators.

1/2= 0.5 (decimal form)

The required probabilities are

a. P(X < 75) = 0.29, b. P(X < 28) = 0, and c. P(X = 75) = 0

A continuous probability distribution is a type of probability distribution that describes the probabilities of all possible values that a continuous random variable can take within a specific range.

In contrast to discrete probability distributions, which describe the probabilities of discrete outcomes, continuous probability distributions describe the probabilities of continuous outcomes.

Here we have

For a continuous random variable X,

P(28 ≤ X ≤ 75) = 0.15 and P(X > 75) = 0.14

Given probabilities can be calculated as follows

a. P(X < 75)

P(X < 75) = P(X ≤ 75) - P(X = 75)

= 0.15 + 0.14

= 0.29

b. P(X < 28)

P(X < 28) = P(X ≤ 28) = 0,

[ since X cannot be less than 28 if P(28 ≤ X ≤ 75) = 0.15 ]

c. P(X = 75)

P(X = 75) = P(X ≤ 75) - P(X < 75)

= 0.15 - 0.29

= -0.14.

However, this is not a valid probability since probabilities cannot be negative.

Therefore, P(X = 75) = 0.

Therefore,

The required probabilities are

a. P(X < 75) = 0.29, b. P(X < 28) = 0, and c. P(X = 75) = 0

Learn more about Probabilities at

https://brainly.com/question/31197941

#SPJ1

Answer:

'y' must be at least one more than 'x'

Step-by-step explanation:

example:  let 'x' equal 4

in order for '4 - y' to be less than zero (a negative value) then the value of 'y' must 5 or less

4 - 5 = -1

Answer:

Y is a negative number that has a value greater than the opposite of X

Step-by-step explanation:

Answer:

The least degree of the polynomial that assures an error smaller than 0.001 is 4.

The Lagrange error bound for the Taylor polynomial of degree n centered at x=2 for e^x is given by:

```

|e^x - T_n(x)| < \frac{e^2}{(n+1)!}|x-2|^{n+1}

```

where T_n(x) is the Taylor polynomial of degree n centered at x=2.

We want the error to be less than 0.001, so we have:

```

\frac{e^2}{(n+1)!}|x-2|^{n+1} < 0.001

```

We can solve for n to get:

```

n+1 > \frac{e^2 \cdot 1000}{|x-2|}

```

We know that |x-2| = 0.45, so we have:

```

n+1 > \frac{e^2 \cdot 1000}{0.45} \approx 6900

```

Therefore, n > 6899.

The least integer greater than 6899 is 6900, so the least degree of the polynomial that assures an error smaller than 0.001 is 4.

The fourth-degree Taylor polynomial centered at x=2 for e^x is given by:

```

T_4(x) = 1 + 2x + \frac{x^2}{2} + \frac{x^3}{6} + \frac{x^4}{24}

```

We can use this polynomial to estimate e^1.45 as follows:

```

e^1.45 \approx T_4(1.45) = 4.38201

```

The actual value of e^1.45 is 4.38202, so the error in this approximation is less than 0.001.

Step-by-step explanation:

Answer:

52

Step-by-step explanation:

Answer:

-10

Step-by-step explanation:

5(2) or fives times two is positive ten. The rule about multiplying with negatives is a negative times a positive is a negative. We take the multiplication answer from 5(2)=10 and apple the nagative from 5(-2). Hope this helps:)

Answer:

D. 1 1/2 hours

Step-by-step explanation:

First, we need to find the unit rate to then multiply it by 90. to find the unit rate I did 240 miles divided by 4 hours to get 60 miles per hour. So we know we need at least 1 hour to get the 60 miles and to get 90 miles we need to add 30. Since 30 is half of 60 we can just take half of 1 hour which is 30 minutes. we add it together and get 1 hour and 30 minutes, or 1 hour and a half.

Time taken to cover 90 miles is 1.5 hours

Time taken to cover 240 miles = 4 hours

Time taken to cover 90 miles

Time taken to cover 90 miles = [90 / 240]4

Time taken to cover 90 miles = [360 / 240]

Time taken to cover 90 miles = 1.5 hours

https://brainly.com/question/13326890?referrer=searchResults