Answer:
x = 135
Step-by-step explanation:
All the angles of a pentagon added up make 540 degrees.
540 - 60 = 480
480 - 150 = 330
330 - 120 = 210
210 - 75 = 135
x = 135
So what you do first is find the area of this lawn and you do 10 by 12 and multiply those and you get 120 feet so now what you do is divived 120 by 3 and you get 40 so that means she mowed 40 ft in each hour so that would be the unit rate.
Answer:
yes
Step-by-step explanation:
Answer and explanation:
The standard error is used to measure the difference between the sample mean and the population mean. It uses standard deviation to measure the level of deviation of the sample mean from the population mean. In other words, the accuracy of the sample mean by way of representing the mean of the population is measured using the standard error. If there is significant difference then standard error is bigger usually non-zero while it is less significant with smaller standard error.
Answer:
The two numbers are 9 and 3.
Step-by-step explanation:
x+y=12
x-y=6
---------
2x=18
x=18/2
x=9
9-y=6
y=9-6
y=3