A toy train has 8 compartments and an engine that is 8 inches long. Each compartment is 4 inches long. Each compartment is joined by links that are 3 inches long. How long is that train.

Answer:

30mph faster

Step-by-step explanation:

first you must find how fast the train can go in 1 hour

that is 60mph, then multiply 60 and 2.5

60x2.5 = 150mph then,

150 - 120 =30mph

very sorry if this is wrong

The average speed of the train is 1.25 times the average speed of the car.

Speed is defined as the length traveled by a particle or entity in an hour. It is a scale parameter. It is the ratio of length to duration.

We know that the speed formula

Speed = Distance/Time

The excursion from Manhattan to Montauk Point is 120 miles via train or via vehicle. A train makes the outing in 2 hours, while a vehicle makes the excursion in 2.5 hours.

The average speed of the train is given as,

⇒ 120 / 2

⇒ 60 miles per hour

The average speed of the car is given as,

⇒ 120 / 2.5

⇒ 48 miles per hour

The ratio of the average speed of the train to the car will be given as,

⇒ 60/48

⇒ 1.25

The average speed of the train is 1.25 times the average speed of the car.

More about the speed link is given below.

https://brainly.com/question/7359669

#SPJ5

Answer:

[tex]x = -20[/tex]

Step-by-step explanation:

Use inverse operations and simplification to isolate the variable in the equation.

[tex]-\frac{2}{5}x + 7 = 15\\-7\\\\-\frac{2}{5}x = 8\\[/tex]

Now divide the equation by [tex](-\frac{2}{5})[/tex] remember, dividing a fraction is the same as multiplying by the reciprocal. The reciprocal of a fraction is when one switches the places of the numerator (number on top of a fraction bar), and the denominator (number on the bottom of the fraction bar).

[tex]-\frac{2}{5}x = 8\\[/tex]

÷[tex]-\frac{2}{5}[/tex]

[tex]x = 8 * (-\frac{5}{2})[/tex]

Simplify,

[tex]x = 4 *(- 5)\\\\ x= -20[/tex]

Answer:

The measure of Angle XYZ = 34

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

You should know the area of a circle, A = πr².

So, all you need to find is the area of half a circle, or A = [tex]\frac{1}{2}[/tex] πr²

We see that the radius is half of the diameter or r = 6 in.

A = [tex]\frac{1}{2}[/tex] (3.14)(6)²

A = 56.52 in²

Answer:

Draw a double bar graph for the given information.

Class 5th 6th 7th 8th 9th

No. of Boys 20 40 25 35 20

No. of Girls 30 35 20 25 40

I hope it is helpful...

Answer:

b. The mean of the sampling distribution will be equal to 0.2028.

f. The sampling distribution will be approximately normal.

g. The standard deviation of the sampling distribution will be 0.0336.

Step-by-step explanation:

We use the Central Limit Theorem to solve this question.

Central Limit Theorem:

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex].

The sample proportion being approximately normal means that option f. is correct.

Of 143 men, 29 said they would.

This means that [tex]p = \frac{29}{143} = 0.2028[/tex]

This means that option b is correct.

g. The standard deviation of the sampling distribution will be 0.0336.

Lets find the standard deviation.

Sample of 143, so [tex]n = 143[/tex]

[tex]s = \sqrt{\frac{0.2028*0.7972}{143}} = 0.0336[/tex]

So option g. is correct.

The statements that accurately describe the sampling distribution of the sample proportion of men would return money from a found wallet are;

B) The mean of the sampling distribution will be equal to 0.2028.

F) The sampling distribution will be approximately normal.

G) The standard deviation of the sampling distribution will be 0.0336.

We are given the true proportion of all adult men who will return the money as; p = 18% = 0.18

Thus, the population mean = 0.18

Now, out of 143 men, 29 said they will return the money. Thus;

Sample mean = Sample proportion = 29/143 =  0.2028

The formula for the sampling standard deviation is;

s = √[p^(1 - p^)/n]

s = √[0.2028(1 - 0.2028)/143]

s = √0.001130574545

s = 0.0336

Looking at the options and comparing to the answers gotten above, only option B, F and G are correct.

Read more about Central Limit Theorem at; https://brainly.com/question/25800303

Answer:

16.66%

Step-by-step explanation:

7500-6250=1250

1250/7500 x 100 = 16.66%

Answer:

what is this language

Step-by-step explanation:

Answer:

hope it will help you.....

Answer:

7.25

Step-by-step explanation:

is your answer number 4

Answer:

Suppose that you have a random point (x, y), and now you do a dilation from the origin with a scale factor of k.

Then the new coordinates of the point are:

(k*x, k*y)

Now, in this question, we have a dilation of scale factor k = 1/2.

Then if we start with the point (x, y), after the dilation we will have the point (x/2, y/2)

Now you can notice that instead of this, in the table we have (2*x, 2*y)

So this is the error, the transformation is not correctly calculated.

Answer:

-0.4285714286

Step-by-step explanation:

-3/7 = -0.4285714286

Answer:

look up

Step-by-step explanation:

Answer:

h=52

Step-by-step explanation: You subtract 36 from both sides and it cancels on the right but on the left you do regular subtraction and you get that h equals 52

Answer:

h = 52

Step-by-step explanation:

h + 36 = 88

subtract 36 from both sides

h = 52

Answer:

4 now hurry

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Closest answer

Answer:

1

Step-by-step explanation:

hope it helps . ans is c

Answer:

0.02272727272

You can search for any mathematical expression, using functions such as: sin, cos, sqrt, etc. You can find a complete list of functions here.

(

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%

AC

7

8

9

÷

4

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Deg

x!

Inv

sin

ln

π

cos

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Ans

EXP

xy

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123

Fx

Answer:

4/11 is the answer plz mark as brainlliest

Answer:

x = 7

Step-by-step explanation:

A right angle is equal to 90 degrees

The sum of the angles, 55 and 5x, should equal 90

55 + 5x = 90

Isolate the variable

Subtract both sides by 55

55 - 55 + 5x = 90 - 55

5x = 35

Divide both sides by 5

5x ÷ 5 = 35 ÷ 5

x = 7

Answer:

6 and 4

Step-by-step explanation:

6+4 = 10

6-2 = 4

Answer:

[tex]\displaystyle \frac{x + 2}{x + 9}, \ x \neq -9, \ 12[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Algebra II

Step-by-step explanation:

Step 1: Define

[tex]\displaystyle \frac{x^2 - 10x - 24}{x^2 - 3x - 108}[/tex]

Step 2: Simplify

We know that x cannot equal -9 because we would get a divide by 0 (undefined) error. We also know that x cannot equal 12 because it was canceled out when simplifying.

Answer:

D-16

Step-by-step explanation:

Answer:

D. 16

Step-by-step explanation:

On one shelf, she can put 4 baskets.

So, on 4 shelves, she can put (4 x 4) 16 baskets.

Hope this helps :)

Answer:  24 ???

Step-by-step explanation:

4 mins to run 5 ... so im guessing it goes by 5

5 = 4

10 = 8

15 = 12

20 = 16

25 = 20

30 = 24

I am not sure if its right but that what i think ( you can use a table btw one colom that says laps and starts with 5 then the other colom that says mins and starts with 4

Hope its right Good Luck have a good rest of your day

Answer:

3

Step-by-step explanation:

=6x-3(2x-1)

=6x-6x+3

=3 Answer

Answer:

7/100

Step-by-step explanation:

This is literally what the percent sign means: "per hundred".

Answer:

Constant speed

Step-by-step explanation:

That's the answer

Answer:

C.

Step-by-step explanation: