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
4vir4ik [10]
3 years ago
10

Pls help will give brainliest

Mathematics
1 answer:
spayn [35]3 years ago
6 0

Answer:

7

Step-by-step explanation:

Let the width of the mechanical pencil lead be w_m and the width of a human hair be w_h. We are trying to find the number of widths of pieces of hair (let that be n) that make it equal to the width of a mechanical pencil lead, so we write the equation w_m=n*w_h. Hopefully, writing an equation makes this easier to understand!

Now, I want n, so I divide be w_h on both sides, substitute, and get that n = w_m/w_h = (7*10^-4)/(1*10^-4)

The 10^-4’s cancel, so we get n = 7/1 = 7.

I hope this helps! :)

You might be interested in
Hey cylindrical water tank is being filled with the hose. The depth of the water increases by 1 1/4 ft./h how many hours will it
irakobra [83]
First off, let's convert the mixed fractions to "improper", keeping in mind that the water is increasing every passing hour by 1 and 1/4.

\bf \stackrel{mixed}{1\frac{1}{4}}\implies \cfrac{1\cdot 4+1}{4}\implies \stackrel{improper}{\cfrac{5}{4}}
\\\\\\
\stackrel{mixed}{3\frac{1}{2}}\implies \cfrac{3\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{7}{2}}\\\\
-------------------------------

\bf \begin{array}{ccll}
feet&hours\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
\frac{5}{4}&1\\\\
\frac{7}{2}&h
\end{array}\implies \cfrac{\quad \frac{5}{4}\quad }{\frac{7}{2}}=\cfrac{1}{h}\implies \cfrac{5}{4}\cdot \cfrac{2}{7}=\cfrac{1}{h}\implies \cfrac{5}{2}\cdot \cfrac{1}{7}=\cfrac{1}{h}
\\\\\\
\cfrac{5}{14}=\cfrac{1}{h}\implies h=\cfrac{14\cdot 1}{5}\implies h=\cfrac{14}{5}\implies h=2\frac{4}{5}
3 0
3 years ago
Round 129.392 to the nearest ten,one,tenth,and hundredth. I need help plz
Soloha48 [4]
Nearest ten=130
nearest one=129
nearest tenth= 129.4
nearest hundredth= 129.39
8 0
4 years ago
4. Solve for x and y
arlik [135]

Answer:

Step-by-step explanation:

Intersecting lines make equal opposite angles

2x + y = 50 - y

     2x = 50 - 2y

       x = 25 - y

A straight line represents 180°

4x + 6y + 2x + y + 2x + 3y = 180

                            8x + 10y = 180

                  8(25 - y) + 10y = 180

                  200 - 8y + 10y = 180

                                     2y = -20

                                       y = -10

       x = 25 - (-10)

       x = 35

3 0
3 years ago
What is 245 and 7/50 in decimal form
kondaur [170]

Answer:

245=2.45

7/50=0.14

Step-by-step explanation:

divide by 100

USE MATHAWAY DOT COM!!

7 0
3 years ago
Read 2 more answers
Michael wrote the system of equations below, but he accidentally left out the coefficient of x in the first equation.
Art [367]

Your answer would have to be 2

6 0
3 years ago
Read 2 more answers
Other questions:
  • Can someone please help me get 2 brainliest?
    7·1 answer
  • Equation !
    13·1 answer
  • Alisa wrote a comparison for set b using the ten thousands place.
    8·1 answer
  • A moving company charges $840 plus $17 per hour. Another moving company charges $760 plus $22 per hour.how long is job that cost
    6·1 answer
  • Please please help me i can’t figure this out .. ernest's friend rolls a six-sided number cube and lands on square 8. She asks E
    5·1 answer
  • If (3-4i) (x+iy) = 3 root 5<br> show that x^2 + y^2=9/5
    13·1 answer
  • Which of the following represents a rational number?
    10·1 answer
  • Find the quotient.<br> 52.06 divided by 1.9
    11·2 answers
  • If 2.34 x 23.5=8 how do you solve this eqaution.
    7·2 answers
  • 03 Fill in the Blank Text<br> Simplify the following expression:<br><br> 14a + 3(a + 4b) - 2b
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!