Mathematics: Grades can be converted into numbers ( as in calculating a gpa where an a=4, b=3,c=2, d=1, and f=0 x grade 4 3 2 1 0 p(x) 0.20 0.25 0.30 0.10 0.15 a. verify that this is a legitimate probability distribution 0.20+0.25+0.30+0.10+0.15=1 b.find the means grade for this class. 4x0.20=0.8 3x0.25=0.75 2x0.30=0.6 1x0.10=0.1 0x0.15=0.0 0.8+0.75+0.6+0.1+0.0=2.25 find the standard deviation c. 2.25/5=0.45

Grades can be converted into numbers ( as in calculating

marwaalsaidi

18.11.2022

1.05

Step-by-step explanation:

Given: Yui notices that each month’s total is 5% greater than the previous month’s total.

Let the initial amount in bank be x .

then the amount in the second month= $x+5\%ofx=x+0.05\times\ x=x+0.05x=x(1+0.05)=1.05x$

We know that the common ratio= $\frac{\text{second term}}{\text{first term}}=\frac{1.05x}{x}=1.05$

Hence, 1.05 is the common ratio.

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