1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
galina1969 [7]
3 years ago
9

Need help with this math

Mathematics
1 answer:
xenn [34]3 years ago
7 0

a)

\dfrac{\$0.10}{1000\,Wh}\times 50\,W\times 9\,h=\dfrac{\$0.10\cdot 50\cdot 9}{1000}=\bf{\$0.045}

b) The cost per year is 365 times this amount. You save 35/50 times that, so you save ...

... $0.045×365×35/50 = $11.4975 ≈ $11.50 . . . annual savings

_____

If the bulb is using 15 W instead of 50 W, you are saving the cost of 50-15=35 W, so 35/50 of the cost of running the higher-power bulb.

You might be interested in
PLEASE HELP ME !!!!!! I NEED TO GET THIS QUESTION RIGHT !!! Which is the simplified form of x^-12?
tia_tia [17]
x^{-12}= \cfrac{1}{x^{12}}
6 0
4 years ago
What is 64x^9 as a monomial cube
Damm [24]

Answer:

(4x^3)^3

Step-by-step explanation:

64x^9

divide each exponent by 3 to get a cube

((64^-3)x^3)^3

simplify

(4x^3)^3

7 0
2 years ago
39545 rounded to the nearest thousand
KATRIN_1 [288]
It would be 40,000 if you rounded up
6 0
3 years ago
Read 2 more answers
Can three points be noncoplanar?
olga55 [171]
NO! 3 points cannot be non-co-planar 

Good luck! :) 
<3
4 0
3 years ago
Explain how you can use your compass to construct one-fourth the length of a segment.​
kogti [31]

Answer:

You caluculate the value of the segment then multiply it by 1/4. After that you move the compass to match the radius of the segment

Step-by-step explanation:

Sorry if that didnt make sense

7 0
3 years ago
Other questions:
  • Need help solving a problem 5084 times 76
    10·1 answer
  • Somebody help me wit dis
    5·2 answers
  • In a sample of 150 cars, 18 cars failed a safety inspection. The sampling method had a margin of error of 0.02.
    15·1 answer
  • Rules for adding negative and positive signs
    6·2 answers
  • The graph is of a function in the form p(t)=a x b^t. what is the function? (2 points)
    15·1 answer
  • Sal Boxer decided to divide a gift of $5000 into two different accounts. He placed $1000 in an account that earns an annual simp
    9·1 answer
  • Fran is making a punch for her birthday party. She needs 4 1/5 liters of juice for the punch, but she only has 1 4/5 liters. How
    6·2 answers
  • Recovery
    13·2 answers
  • Please help lollll i will give brainliest
    13·2 answers
  • Peter and pam are both avid swimmers
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!