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2^4-1=8

Thank you.

60 mph  = 88 ft/s

So

x / 15.5  =  88/ 60        cross-multiply

60x  = 15.5 * 88

x  =   15.5  * 88  / 60   = 341 /15  ft /s

So

341 / 15  *  60  ≈  1364  ft / min

Sometimes I think the questioners could at least say thank you.

Very  nice, Omi   !!!!!!

Prob  =   4/7  *  3/6 =   12 / 42   =    2 / 7

tan (-2pi/3)

__________   - sec (- pi)

sin (7pi/4)

One step at a time.....

tan (-2pi/3)    = tan (-120°)   = tan (360 - 120)°  = tan (240°)   =  tan (60°)    = √3

sin (7pi/4) =  sin (-pi/4)    =  -sin (pi/4)   = - sin (45°) =  - √2/2

sec (-pi)   =  sec (pi)  =   sec (180°) =   -1

So....putting this all together  we get

√3 /  [  -√2/2  ]   -  (-1)   =

2√3 / -√2  +  1   =

2√3√2 / [ - √2 * √2 ]  +   2/2  =

-2√6 / 2  +  2/2   =

-√6   +  1

Here is the answer.

(sin -2pi/3    /   cos (-2pi/3)    ) / sin (7pi/4)    - sec (-pi)

-sqrt2/3  /  -1/2     /  sqrt2/2     -    1 /cos pi

2 sqrt2 /3     /    sqrt2/2           + 1

4/3                                          + 1    =   1 4/3

cos (theta) = adj/hyp =  2 sqrt6 / 2 sqrt 15 = sqrt6/sqrt15

arc cos(sqrt6/sqrt15) = 50.8 degrees

A sphere with a radius of 3 cm has the same volume as a cone with a radius of 6 cm. What is the height of the cone?

The height h above the roadway of the main cable of the Golden Gate Bridge can be modeled by the function h(x) = 1/9000x^2-7/15x+500, where x is the distance in feet from the left tower.

a. Complete the square, and write the function in vertex form.

b. What is the vertex, and what does it represent?

c. The left and right towers have the same height. What is the distance between them?

    Disdance: d=4200 feet.

12 g = km car can go on g liters

5 1/2 liters =g

12 g  =  12 (5  1/2 ) = 66 km

Via dimensional analysis.....note how things cancel out and you are left with  f / m

15.5  mile / hr    x    1 hr / 60 m      x   5280 ft / mile    =  1364 f / min

https://web2.0calc.com/questions/maths-question_22

1/2   *   9  7/8 =    1/2  * 79/8 = 79/16

Power = k/distance⁴ where k is a constant.

Plug in the known values

35 = k/180⁴  so k = 35*180⁴

At 540m we have power = k/540⁴ = 35*180⁴/540⁴ = 35*(180/540)⁴ = 35*(1/3)⁴ = 35/81 = 0.432 µW

AB = sqrt(4²+4²+4²) = sqrt(16+16+16) = sqrt(16*3)=4*sqrt3 = 6.9

i dont even know what this is ()_()

what?

ok thank  you

it is ok 

thks for your help 

btw how old r u?

that was just a random question.

Sorry for the "typo"!!. B should read 170 NOT 70. But the solution is correct.