An easy way is to pretend that 25 is positive. 14+25= 39. If we know that the mathematical equation of positive+negative= negative, then we switch the 39 to -39.
find the mean 164,175,178,166,167,145,176,150,174,162,180,156,173,158,182,184,160,172,186,168,195,169,171,187,170
shtirl [24]
Answer:
170.72
Step-by-step explanation:
Add up all data values to get the sum
Count the number of values in your data set
Divide the sum by the count
Answer:
39cm
Step-by-step explanation: 19cm+15cm+5cm=39
The addition property of equality is used when an expression has a subtraction in it while the division property of equality is used when the expression has a multiplication
The addition property of equality is used to undo subtraction. The division property of Equality is used to undo multiplication
