A student estimated a mass to be 40 g. After carefully measuring, she found the actual mass to be 45 g. What is the percent of error? Help me plz

Step-by-step explanation:

Well percent error is calculated by the value you got divided by the actual value times 100%.

So

40/45 x 100% = 88.8888888889%

You can round this to 88.89 % or something

a. the residual plot for model 1 has a random pattern and is a good fit for the data.

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5