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3 years ago

A wheel has a diameter of 70 cm and completes a revolution in 0.25 seconds at top speed

Mathematics

1 answer:

prohojiy [21]3 years ago

6 0

Answer:

8π radians/second
527.8 meters

Step-by-step explanation:

A) The angular velocity is the ratio of angular distance to time:

ω = 1 revolution / (0.25 s) = (2π radians)/(0.25 s)

ω = 8π radians/second

B) The arc length is ...

s = rθ = rωt

s = (35 cm)(8π rad/s)(60 s) = 16,800π cm

s ≈ 52779 cm = 527.79 m

The wheel travels about 527.8 meters in one minute.

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Help pleaseeeee it’s urgent!!!

Ad libitum [116K]

Answer:

(2,-7)

Step-by-step explanation:

Use the midpoint formula! (Attached is a picture of it!)

1) Plug in the values:

(5-1)/2,(-6+-8)/2

2) Simplify:

4/2,-14/2

3) Solve:

(2,-7)

6 0

4 years ago

Yall know the rate of change?

ale4655 [162]

Answer:

M=-3

Step-by-step explanation:

Slope:

y2-y1/x2-x1

-3-3/1+1=6/-2=-3

4 0

3 years ago

can you please explain to me how 570ml = oz. I'm having a hard time figuring it out. I'm having a problem with converting.

Vladimir79 [104]

19.2740122 fluid ounces = 570 milliliters. I'm positive this really is the answer. :)

8 0

3 years ago

For a quadratic function ƒ(x)=ax2+bx+c, ƒ(−1)<1, ƒ(1)>−1, and ƒ(3)<−4. What could be the sign of a?

denis23 [38]

Answer:

"a" must be negative

Step-by-step explanation:

The slope between points (-1, 1) and (1, -1) is a minimum of (-1-1)/(1-(-1)) = -1.

The slope between points (1, -1 and (3, -4) is a maximum of (-4-(-1))/(3-1) = -3/2.

Thus, as x increases, the slope is decreasing. In order for that to be the case, the value of <em>a</em> must satisfy a < 0.

4 0

4 years ago

Mr. Chang wants to retire in 10 years. He deposits $650.00 every three months into his retirement investment account. If the acc

Fittoniya [83]

Answer:

Mr. Chang will have 15714.90 dollars.

Step-by-step explanation:

p = 650

r = $7.8/4/100=0.0195$

Number of periods or n = $5\times4=20$

Future value formula is : $p[\frac{(1+r)^{n}-1}{r} ]$

Putting the values in formula we get;

$650[\frac{(1+0.0195)^{20}-1}{0.0195} ]$

= $15714.90

Hence, Mr. Chang will have 15714.90 dollars.

5 0

4 years ago