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3 years ago

If you get this I’ll mark you brilliance

Mathematics

1 answer:

djyliett [7]3 years ago

6 0

Answer:

$1256cm^{3}$

Step-by-step explanation:

Use the formula for the volume of a cylinder $V=3.14(r^{2}) h$ so then you plug in the values to get $1256cm^{3}$

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The mass of the part of a metal rod that lies between its left end and a point x meters to the right is 4x2 kg. (See this exampl

Ganezh [65]

Answer:

A) 32 kg/m

B) 48 kg/m

C) 72 kg/m

Step-by-step explanation:

We are given mass is; m = 4x²

Linear density is the derivative of mass with respect to the position x. So linear density is;

ρ = dm/dx

Differentiating 4x²,we have; ρ = 8x

A)at x = 4; ρ = 8(4) = 32 kg/m

B) at x = 6; ρ = 8(6) = 48 kg/m

C) at x = 9; ρ = 8(9) = 72 kg/m

5 0

3 years ago

Please help asap 25 pts

Alona [7]

Hey there

the answer is A

5 0

3 years ago

Read 2 more answers

What is the margin of error for a yes/no survey of 200 people with a proportion of 65% who answered \"yes\"?. A. ±3.37%. B. ±5.0

azamat

$\sqrt{(p*q)/n}$

where p is the number of positive outcomes (yes) and q is the number of negative outcomes (no).

$\sqrt{(0.65*(1-0.65))/200}$ = 0.0337 or 3.37%

answer is A.

6 0

4 years ago

A soccer player stands in the south east corner of a 72 yard x 65 yard field and kick the soccer ball All the way to a player in

lubasha [3.4K]

Answer:

Using the Pythagorean Theorem:

distance^2 = 72^2 + 65^2

distance^2 = 5,184 + 4,225

distance^2 = 9,409

distance = 97 yards

"round-trip" distance = 97 * 2 = 194 yards

Step-by-step explanation:

4 0

3 years ago

A group of rowdy teenagers near a wind turbine decide to place a pair of

Marrrta [24]

Answer:

a) Hence the equation of the sinusoidal function that describes the height of the shorts in terms of time is $y = 9 + 7* sin(\pi * t / 15 - \pi / 6)$

b) Hence the height of the shorts at exactly t = 10 minutes, to

the nearest tenth of a meter is 5.5 meters

Step-by-step explanation:

a) The wind turbine blade traverses a circular path as it rotates with time (t), whose time variation is given by the following trajectory equation :

$x^2 + (y-yc)^2 = R^2$ ,

where

R = (16 m - 2 m)/2 (since diameter = maximum height - minimum height of the pink short)

= 14 m / 2

= 7 m (radius of the circle)

Also, center of the circle will be at (0, 2 + R) i.e (0,9)

So, is the trajectory path equation to the circle

Let $x = 7* cos(w*t + \phi ) & y = 9 + 7* sin(w* t + \phi)$ be the parametric form of the above circle equation which represent the position of the pink shorts at the tip of the blade at time t