18. ENERGY Light-emitting diode (LED) bulbs reduce energy waste. The average daily reduction in the energy used expressed as a negative number of watt-hours is estimated by –b2 – 600b, where b is the number of bulbs replaced by CFLS. Divide by b to find the average amount of energy saved per LED bulb.

Q: 3.5(0.3x-1.5y)-4(0.2x-1.2y)

A: According to question,Given expression,3.50.3x - 1.5y-40.2x-1.2y

Q: Let N = 7^11. Find the remainder of dividing 8^N by 13.

A: We have N=711 Since 711=1977326743 So we can write 8N=81977326743 We can write it as…

Q: Why is 1 not the identity for division?

A: let * be any operation. An element e is called identity if n*e = n , where n be any number.

Q: Explain how to subtract polynomials ?

A:

Q: Janine is confused and thinks that 100 × 5.9 is 5.900. Tell Janine a rule for multiplying by 100…

A: Here if there is a problem like this, you should use different method as given below :

Q: Use long division to determine the decimal equivalent of 7 over 9

A: long division is a standard division algorithm suitable for dividing multi-digit numbers that is…

Q: You Write sqrt 29 in its continued fraction expansion.

A: The continued fraction expansion of a number is an expression that represents the number as an…

Q: Cell B: 3, point, 5, 2, times, 10, to the power minus 23.52×10−2 centimeters Cell C: 5, point,…

A:

Q: Please explain how multiply 3 1/9 x 2 3/4 and get an answer of 8 5/9.

A:

Q: Rationalize the denominator : √2/√3

A: The given expression 23

Q: x/5 + 8 = 1/20 Simplify.

A: The given equation is,

Q: Simplify the radical 4√q^13

A:

Q: 7)^-2(4s/6t)^-2

A: