What linear equation? Your not showing any equation
60(one hour) divided by 15 is 4. 4 tines 18 is 112. A postal service person can deliver 112 pieces in 1 hour. Hope this helps!
Answer:
2x+12 = 20
x = 4
Step-by-step explanation:
Twice a number = 2x
increased by 12 = +12
Format:
2x + 12 = 20
Solve
Subtract 12 from both sides
2x + 12 - 12 = 20 - 12
2x = 8
divide both sides by 2
2x/2 = 8/2
x = 4
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-Chetan K
Answer: See explanation
Step-by-step explanation:
Since we are informed that the temperature on Mars may reach a high of 70 degrees Fahrenheit at the equator in the summer and may also reach a low of -225 degrees Fahrenheit at the poles.
The expression that gives the difference between those temperatures would then be calculated as:
= 70°F - (-225°F)
= 70°F + 225°F
= 295°F
The following steps will show you how to calculate the sample mean of a data set:
Add up the sample items.
Divide sum by the number of samples.
The result is the mean.
Use the mean to find the variance.
Use the variance to find the standard deviation.
