<span>Q Roni
and Allie are mowing the grass at the soccer field. Roni has a riding
lawn mower and can mow the field in 30 minutes. Allie is pushing a lawn
mower and can mow the field in 75 minutes.
If Roni and Allie work together to mow the field, what part of the field would Roni mow?
A He would mow the bigger part of the field
</span>
2x-5y =-5
14x+5y=-5
---------------
16x = -10
x = -10/16
x = -.626
2x-5y = -5
2(-.625) -5y = -5
-1.25 - 5y = -5
-5y = -3.75
y = .75
Choice A is approximately -.6 and .8 the others are not going to be close
Let's break this down:
The difference: Something's gotta be subtracted
Twice a number: So 2 times a number, or n
and 3: So we gotta subtract 2n and 3
is 11: The final answer is 11
So altogether is:
2n - 3 = 11
Answer:
The 315 hours is the value of a: statistic
Step-by-step explanation:
A random sample of 650 power cells is tested and the average lifetime of this sample is found to be 315 hours.
The 315 hours is the value of a: statistic
A statistic is defined as a characteristic of a sample. It is used to estimate the value of a population parameter.
Just like here where a random sample of 650 power cells were taken for a test. And 315 hours is an example of a statistic.
Answer:
1/4
Step-by-step explanation:
