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
sashaice [31]
3 years ago
7

The washer in the image has an inner diameter of 1/4 inch. The outer diameter measures 3/4 inch, and the washer is 1/4 inch thic

k. The density of the metal that washe
made ofis 0.285 pounds per cubic inch. What would the weight of 5 washers be in pounds?

Mathematics
1 answer:
Talja [164]3 years ago
5 0

Answer:

  0.14 lb . . .  closest choice is 0.11 lb

Step-by-step explanation:

The inside and outside radii are 1/8 in and 3/8 in, respectively. Then the area of the top of the washer is ...

  A = π(R² -r²) = π((3/8)² -(1/8)²) = π(9/64 -1/64) = π/8 . . . square inches

The height of the stack of 5 washers will be 5×(1/4 in) = 5/4 in. So, the volume of material in the stack of washers is ...

  V = Bh = (π/8)(5/4) = 5π/32 . . . cubic inches

The weight of material is the product of volume and density, so is ...

  W = (5π/32 in³)(0.285 lb/in³) ≈ 0.1399 lb ≈ 0.14 lb

_____

<em>Comment on the question</em>

Since this answer does not correspond to any of the offered choices, we suggest you ask your teacher to work this out for you. We suspect they will have difficulty justifying any of the answer choices shown here. (0.11 lb corresponds to 4 washers, not 5.)

You might be interested in
What is 859 under a thousand as a mixed number?
Semmy [17]
To convert the improper fraction \frac{1000}{859} into a mixed number, you first want to divide the numerator (1000) by the denominator (859):
1000 \div 859 = 1 R141

The quotient, which is 1, will be your whole number part of your mixed number. The remainder, 141, will become the numerator of the fraction part of your mixed number. The original denominator of your improper fraction, 859, is still the denominator of your mixed number. So your mixed number form of your improper fraction is:
\frac{1000}{859} = 1 \frac{141}{859}

Your answer is 1 \frac{141}{859}

6 0
3 years ago
Question 1: Which Operation should you do first when evaluating the
sleet_krkn [62]
C. multiply because of the order of operations
6 0
3 years ago
Cant figure out number 5
musickatia [10]

Answer:

It is again the fourth answer VerifiedExpert

Step-by-step explanation:

If you graph of sub in values, you will see no answer dips below (-7,0).

Hope it helps.

5 0
3 years ago
How do you write 8.07 x 10 ^-3 in standard form?
Vlad [161]
Standard Form would be 0.00807
5 0
3 years ago
5 over 2 × z - 8 =-3​
Olenka [21]

Answer:

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • Can someone please graph this and tell me what the slope is??
    6·1 answer
  • Find the value of 4 + 3 x 2
    10·2 answers
  • In the regression equation, what does the letter "a" represent?
    12·1 answer
  • What is 5 8/12 as a mixed number in its simplest form
    13·1 answer
  • TechWiz Electronics makes a profit of $35 for each MP3 player sold and $18 for each DVD player sold. Last week, TechWiz sold a c
    14·2 answers
  • 4x - 5y + 2xy = 0<br> Can Someone do this for me? I need help.
    12·1 answer
  • Find k if (x+1) 2x^3+kx^2+1
    13·1 answer
  • Put the given function into vertex form. Fill in the blanks to complete the function below.
    11·1 answer
  • Can y’all pls help me I need help!!
    5·1 answer
  • Is the function in this table linear or nonlinear and why?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!