At the start of summer, Crater Lake 1 1/4 inches below normal. By the end of summer, it had decreased an additional 2 3/8 inches. What is it's new level?

3 5/8 below normal

Step-by-step explanation:

From the question, we are informed that Crater Lake is 1 1/4 inches below normal and that by the end of summer, it had decreased an additional 2 3/8 inches.

The new level will be:

= 1 1/4 + 2 3/8

= 1 2/8 + 2 3/8

= 3 5/8 below normal

answer: the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

step-by-step explanation:

the given rate of interest i= 85%

in calculating the monthly payment for a loan with an interest rate compounded monthly, the value of the interest rate per period we use in the formula must be in decimal form.

to convert it in decimal, we divide it by 100, we get

hence, the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.