Need help! i know this is easy but I don't get how to do it

Answer:48.85 hr

Step-by-step explanation:

Given

The length of the train track is [tex]L=850\ miles[/tex]

the average speed of the train is [tex]v_{avg}=850\ mph[/tex]

If this track is laid on to a big circle, then the length is equivalent to the circumference

time is taken to cover the circumference is given by

[tex]\Rightarrow t=\dfrac{L}{v}\\\\\Rightarrow t=\dfrac{850}{17.4}=48.85\ hr[/tex]

Answer:

[tex]5 = 16 - 11 \\ so \: \\ {x}^{2} - 8x + 16 - 11\\ \\ {x}^{2} - 8x + 16 = (x - 4)^{2} \\ \\ (x - 4)^{2} - 11 [/tex]

Step-by-step explanation:

I hope that is useful for you :)

Answer:

14^4

Step-by-step explanation:

Since 14 is being multiplied by itself 4 times, that means you can write it as 14^4.

Answer:

14^4

Step-by-step explanation:

I dont have power to 4 symbol so i just used "^" to represent the power. Hope this helps can I pls have brainliest :P

Answer:

Step-by-step explanation:

The first is equvielnt the second is and the third isnt.

The first is because that is what the expression is above. THe second is because it timesing it by c.

Answer:

432 in.^3 or D.

Step-by-step explanation:

Answer:

D) 432 in³

Step-by-step explanation:

4 x 6 = 24

5 x 6 = 30

30 + 24 = 54

54 x 8 = 432

Answer:

A

Step-by-step explanation:

Given

x² = 27 ( take the square root of both sides )

x = ± [tex]\sqrt{27}[/tex]

  = ± [tex]\sqrt{9(3)}[/tex]

  = ± [tex]\sqrt{9}[/tex] × [tex]\sqrt{3}[/tex]

  = ± 3[tex]\sqrt{3}[/tex] → A

Answer:

The second option 5x.

Step-by-step explanation:

Because it says 'x inches each' knowing that it said 5 before that. (5x) no math included just wording and phrasing :)

Answer:

3

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

Answer:

3 and 5/12

Step-by-step explanation:

[tex]4 \frac{3}{4} = \frac{19}{4}\\ \\1\frac{1}{3} = \frac{4}{3}[/tex]

[tex]\frac{19}{4} - \frac{4}{3} \\\\\frac{19(3) - 4(4)}{12} \\\\\frac{57 - 16}{12} \\\\\frac{41}{12} \\[/tex]

This fraction is equivalent to,

[tex]3 and 5/12 = 3\frac{5}{12} = \frac{12*3 + 5}{12} = \frac{41}{12}[/tex]

Answer:

[tex]162\sqrt{3}[/tex]

Step-by-step explanation:

The equation for finding the area of a hexagon with a side length is

[tex](s^23\sqrt{3} )/2[/tex]

insert [tex]6\sqrt{3}[/tex]

and you are left with 162\sqrt{3}

Hope that helps :)

Answer:

[tex] \displaystyle E)\: 162 \sqrt{3} [/tex]

Step-by-step explanation:

we are given a side a polygon

and said to figure out the area

recall the formula of regular polygon

[tex] \displaystyle \: \frac{ {na}^{2} }{4} \cot \left( \frac{ {180}^{ \circ} }{n} \right) [/tex]

where a represents the length of a side

and n represents the number of sides

the given shape has 6 sides

and has a length of [tex]\displaystyle 6\sqrt{3}[/tex]

so our n is 6 and a is 6√3

substitute the value of n and a:

[tex] \displaystyle \: \frac{ {6 \cdot \:( 6 \sqrt{3} })^{2} }{4} \cot \left( \frac{ {180}^{ \circ} }{6} \right) [/tex]

reduce fraction:

[tex] \displaystyle \: \frac{ {6 \cdot \:( 6 \sqrt{3} })^{2} }{4} \cot \left( \frac{ { \cancel{180}^{ \circ}} ^{ {30}^{ \circ} } }{ \cancel{6 \: } } \right) [/tex]

[tex] \displaystyle \: \frac{6 \cdot \: (6 \sqrt{ {3} } {)}^{2} }{4} \cot( {30}^{ \circ} ) [/tex]

simplify square:

[tex] \displaystyle \: \frac{6 \cdot \: 36 \cdot \: 3 }{4} \cot( {30}^{ \circ} ) [/tex]

reduce fraction:

[tex] \displaystyle \: \frac{6 \cdot \: \cancel{36} \: ^{9} \cdot \: 3 }{ \cancel{ 4 \: } } \cot( {30}^{ \circ} ) [/tex]

[tex] \displaystyle \: 6 \cdot \: 9 \cdot \: 3 \cot( {30}^{ \circ} ) [/tex]

simplify multiplication:

[tex] \displaystyle \: 162\cot( {30}^{ \circ} ) [/tex]

recall unit circle:

[tex] \displaystyle \: 162 \sqrt{3} [/tex]

hence, our answer is E

Answer:

its 36 can you give me brainlyyy pleaasee

Answer:

36

Step-by-step explanation:

18 goes into 9 but not 12.

24 goes into 12 but not 9.

36 goes into 9 also into 12.

48 goes into 12 but not 9.

Hope this helps!

Answer:

n = -1 , 3.5

Step-by-step explanation:

Move the terms to the left side and set equal to zero. Then set each factor equal to 0

Answer:

1. (3,-1)

2. Right

3. 3

4. 6

5. (6,-1)

6. x=0

Explanation: Took the test

Answer:

Step-by-step explanation:

Answer:

The car's acceleration was 3.73 metre per second square = 3.73m/s²

Step-by-step explanation:

The car accelerated from rest.

initial velocity (u) = 0m/s

final velocity (v) = 25miles/hr = 11.2m/s

time (t) = 3s

a = ?

v = u+at

a = (v-u)/t

a = (11.2 - 0) / 3

a = 11.2/3

a = 3.73

a = 3.73m/s²

a

Answer:

75

Step-by-step explanation:

=5×15

Answer:

1 cm = 5 meters

Step-by-step explanation:

A scale drawing is a reduced form in terms of dimensions of an original image / building / object

the scale drawing is usually reduced at a constant dimension

scale of the drawing = original dimensions / dimensions of the scale drawing

60 meters / 12 centimetres

5 meters / 1 centimetres

Answer:

15.5

Step-by-step explanation:

3rd side =x

3x-6  +2x-3+x =90

6x-3 =90

6x =93

x= 15.5

3(15.5)-6=40.5

2(15.5)+3=34

40.5+34+15.5 =90

Answer:

b) $0.50, it represents the price per mile to drive the rental van.

Step-by-step explanation:

Find the slope by taking 2 points from the graph: (20, 40) and (40, 50)

Use the formula to find the slope: y2 - y1/ x2 -x1

Substitute the values into the formula above:-

50 - 40 / 40 - 20

=> 10/20

Simplify

=> 1/2

=> 1/2 = 0.50

The slope is $0.50

hope this helps and is right. p.s. i really need brainliest :)

Step-by-step explanation:

[tex]2n + 19 = 21[/tex]

[tex]2n = 21 - 19[/tex]

[tex]2n = 2[/tex]

[tex]n = 2 \div 2[/tex]

Therefore, N = 1

hope it helps don't forget to like and mark me down

Answer:

n=1

Step-by-step explanation:

to solve this you put 19 on the opposite side and subtract 19 fron 21 because subtraction is the opposite of addition and then you get 2 and then divide 2 by 2 to get 1 so n=1. Yo can check it by doing 2*1=2 then 2+19 =21 so it is the correct answer.

Answer:

0≤x≤169/9

Step-by-step explanation:

Answer:

9,6 good luck with the answer

answer: (9,0). bc moving down is in the y axis. subtract 3 from (9,3) and it equals (9,0)

Answer:

41

Step-by-step explanation:

Let the odd number be x

Therefore,

[tex](x + 1) + (x + 3) < 90 \\ 2x + 4 < 90 \\ 2x < 86 \\ x < 43[/tex]

Therefore, Largest possible odd number of x is 41

Answer:

(6, 5) is the answer.

Step-by-step explanation:

The y's intersect at (6, 5)

Answer:

3.6, 3.65, 3 7/9

Step-by-step explanation:

you just have to make all of the numbers decimals or mixed fractions then it is very easy to order them.

Answer: 108 cm

Step-by-step explanation: Formula for square triangle is

SA=

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Answer: 20 miles/1 gallon would be the unit rate so NO 60 miles/3 gallons is not the unit rate

Explanation:

60 / 3 = 20

I hope this helped!

<!> Brainliest is appreciated! <!>

- Zack Slocum

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Answer:

60/3=20

Step-by-step explanation:

hope this helps!

have a good day :)