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klemol [59]
3 years ago
13

IF YOU ANSWer CORRECtly YOU WILL GET BRAINLIEST

Mathematics
1 answer:
Alona [7]3 years ago
7 0

Answer:

a. 7 x 2

Step-by-step explanation:

6 5/8 is closer to 7 and 2 1/3 is closer to 2

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Probability of Rolling a 5 on a 6 sided die
andre [41]

Answer:

1/6

Step-by-step explanation:

Since there are 6 sides, rolling 1 of the numbers on the die will be a 1 out of 6 chance.

8 0
3 years ago
Read 2 more answers
Plz help!!! Urgent!!! It is a mathematics question, I had attached an picture here.
Marianna [84]
B and (0,4)
because the 0 is the x intercept where it crosses 
5 0
3 years ago
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An air traffic controller spots two airplanes at the same altitude converging to a point as they fly at right angles to each oth
sattari [20]
They are traveling at right angles to each other so we can say one is traveling north to south and the other west to east.  Then we can say that there positions, y and x are:

y=150-600t  x=200-800t

By using the Pythagorean Theorem we can find the distance between these two planes as a function of time:

d^2=y^2+x^2, using y and x from above

d^2=(150-600t)^2+(200-800t)^2

d^2=22500-180000t+360000t^2+40000-320000t+640000t^2

d^2=1000000t^2-500000t+62500

d=√(1000000t^2-500000t+6250)

So the rate of change is the derivative of d

dd/dt=(1/2)(2000000t-500000)/√(1000000t^2-500000t+6250)

dd/dt=(1000000t-250000)/√(1000000t^2-500000t+6250)

So the rate depends upon t and is not a constant, so for the instantaneous rate you would plug in a specific value of t...

...

To find how much time the controller has to change the airplanes flight path, we only need to solve for when d=0, or even d^2=0...

1000000t^2-500000t+62500=0

6250(16t^2-8t+1)=0

6250(16^2-4t-4t+1)=0

6250(4t(4t-1)-1(4t-1))=0

6250(4t-1)(4t-1)=0

6250(4t-1)^2=0

4t-1=0

4t=1

t=1/4 hr

Well technically, the controller has t<1/4 because at t=1/4 impact will occur :)


7 0
3 years ago
A store is advertising a 25% off sale. Mikale purchases a swimming pool for $225. What was the original price of the pool?
DIA [1.3K]

Answer:

B

Step-by-step explanation:

7 0
3 years ago
If a Ferrari drove 300 kilometers in one and a half hours. How fast was the car going?
vfiekz [6]
V=s/t
s=300 km = 300000 m
t=1 h and 30 min = 5400 sec
v=300/1,5= 200 km/h
or
v=300000/5400=55,5 m/s
8 0
3 years ago
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