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Mkey [24]
3 years ago
9

A tornado has been spotted in your area. The tornado warning said that the funnel cloud is traveling east at 40 miles per hour.

The warning has given us the tornado's
velocity.
instantaneous speed.
acceleration.
average speed.

Is it A??
Mathematics
1 answer:
klasskru [66]3 years ago
4 0
Tes, because acceleration is how fast it is speeding up, the average speed isn't being given because tornados don't last more than a few miles, and instantaneous speed gives current velocity in a certain direction at a certain time, therefore it would be anytime, including 3 minutes ago, meaning velocity, the current speed, is correct.
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A race car is driven around a circular track at a constant speed of 180mph. If the diameter is 1/2 mile, what is the angular spe
Bogdan [553]
If the diameter is 1/2 mile, that is 0.5 mile, then the radius is 0.25 -half of it!

the angular speed is theta/time, which means

 w=theta/time

but another formula for it is Velocity*radians

w=velocity*radians

velocity is 180 mph and radians are (revolution/2\pi radius), that is:

w=180*(1/2\pi*0.25)
and if we calculate this, we have: w=114.59, which is the correct answer!
4 0
4 years ago
Pls i need to pass this class i wna graduate
jasenka [17]

Answer:

\boxed{\sf x= -29.5}

Step-by-step explanation:

\sf \sqrt{-2x+5}-3=5

\sf \sqrt{-2x+5}=8

\sf -2x+5=64

\sf -2x=59

\sf \cfrac{-2x}{-2}=\cfrac{59}{-2}

Therefore, x = -29.5.

7 0
2 years ago
The price of a commodity has fell down by 15% so that priya can buy 3 more commodities for Rs 1700. What was the original price
erastova [34]

Answer:

2,000

Step-by-step explanation:

write out an equation that represents the problem. the original price X fell by 15% to a new price of 1700:

X - (X*15%) = 1700

X(1-0.15) =1700

X=1700/(1-0.15)

X=2,000

convert 15% to decimal form:

15%=0.15

7 0
3 years ago
Can anyone tell me what x equals in this scenario.<br><br> 3/4x=2x-5
Dvinal [7]

Hey There!

The answer to your problem is x=4

<u>Subtract 2x from both sides</u>

<u></u>3/4x-2x=2x-5-2x<u></u>

<u></u>-5/4x=-5<u></u>

<u></u>

<u>Multiply both sides by 4/(-5)</u>

<u></u>(4/-5)*(-5/4)x=(4/-5)*(-5)

3 0
3 years ago
A circle has a diameter of 42 mm. What is the circumference of this circle? (use 22/7 for pi; show your work in numbers)
stellarik [79]

Answer:

132

Step-by-step explanation:

Find Radius (r)

42/2 = 21

Plug 21 into Circumference Equation

2πr (In this case, π is 22/7)

Simplify

42 (22/7)

<u>132</u>

8 0
3 years ago
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