You have to simplify and then get x
Answer:
x = -11/5 and y = 24/5
Step-by-step explanation:
Use elimination.
First, we need to multiply so that at least one variable can cancel out.
We can multiply the top equation by 2.
So we get
4x + 6y = 20
Then, we can use elimination.
The x's cancel out.
So we get 5y = 24
Or y = 24/5
Then, we can plug in this y value back into the first equation to find x.
2x + 3(24/5) = 10
2x + 72/5 = 50/5
2x = -22/5
x = -11/5
So x = -11/5 and y = 24/5
It is 75000J
I checked this by plugging in the values above to the kinetic energy formula (1/2mv^2)
Answer:
Probability that a randomly selected student plays sport and is in band = 1/50
Step-by-step explanation:
Total number of students= 1900
Percentage of those that play sport and are in band = 2%
Hence those that play sport and are in band = 2/100 x 1900 = 38 students
Probability that a randomly selected student plays sport and is in band = 38/1900 = 1/50
Answer:
- A-610000
- A-.0043
- A-21000
Step-by-step explanation:
1. =6.1*105
=6.1*(10*10*10*10*10)
=610000
2. =0.43*10−2
=0.43*
1
/10*10
=0.0043
3. 2.1(104)
=2.1*104
=2.1*(10*10*10*10)
=21000
