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taurus [48]
3 years ago
8

Plz help Fast!!!!! Which is faster 15 feet per second or 12 miles per hour

Mathematics
2 answers:
serg [7]3 years ago
8 0
12 miles per hour is faster because 12 miles in one hour equals to 63,360 feet. If you multiply the amount of minutes in an hour to 15 you get to 54,000 feet so 15 feet per second in one hour would equal 54,000 feet making 12 miles per hour faster
Misha Larkins [42]3 years ago
3 0
I think 15 feet per second
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An earthquake with a rating of 3.3 is not
stiks02 [169]

Answer:

  1995.26

Step-by-step explanation:

It usually works to follow instructions:

  3.3 = log(x) . . . . . substitute known values into the equation

  10^3.3 = x . . . . . take antilogs

  1995.26 = x . . . .  simplify, round to hundredths

5 0
3 years ago
Please help extra points cuz ik this will be hard and some time to do
vesna_86 [32]

Answer

Part A

1 - 1

2 - 3

3 - 6

4 - 10

5 - 15

Part B

Now plot these points on the coordinate plane

(1,1) (2,3) (3,6) (4,10) (5,15)

Part C

It is NOT a linear function

4 0
3 years ago
Read 2 more answers
The product of two consecutive positive integers is 29 more than their sum. Find the integers
Rina8888 [55]
The consecutive positive integers would be: x and (x+1),
We would have to solve the following equation to find these numbers:
x(x+1)-[x+(x+1)]=29
x²+x-2x-1=29
x²-x-30=0
x=[1⁺₋√(1+120)]/2
x=(1⁺₋11)/2
We have two possible solutions:
x₁=(1-11)/2=-5    then: (x+1)=-5+1=-4  This is not the solution.
x₂=(1+11)/2=6    then: (x+1)=6+1=7    This solution is right.

Answer: the numbers would be 6 and 7. 
7 0
2 years ago
The mean temperature for the first 4 days in January was -7°C.
Mkey [24]

Answer:

3ºC

Step-by-step explanation:

3 0
2 years ago
Alexander Litvinenko was poisoned with 10 micrograms of the radioactive substance Polonium-210. Since radioactive decay follows
koban [17]

Answer:

The amount of Polonium-210 left in his body after 72 days is 6.937 μg.

Step-by-step explanation:

The decay rate of Polonium-210 is the following:

N(t) = N_{0}e^{-\lambda t}     (1)

Where:

N(t) is the quantity of Po-210 at time t =?

N₀ is the initial quantity of Po-210 = 10 μg

λ is the decay constant  

t is the time = 72 d  

The decay rate is 0.502%, hence the quantity that still remains in Alexander is 99.498%.    

First, we need to find the decay constant:

\lambda = \frac{ln(2)}{t_{1/2}}    (2)

Where t(1/2) is the half-life of Po-210 = 138.376 days

By entering equation (2) into (1) we have:

N(t) = N_{0}e^{-\frac{ln(2)}{t_{1/2}}*t}} = 10* \frac{99.498}{100}*e^{-\frac{ln(2)}{138.376}*72} = 6.937 \mu g    

Therefore, the amount of Polonium-210 left in his body after 72 days is 6.937 μg.  

I hope it helps you!  

8 0
2 years ago
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