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
Nuetrik [128]
3 years ago
11

Alex the electrician needs 34 yards of electrical wire to complete his job. He has a coil of wiring in his workshop. The coiled

wire is 18 inches in diameter and is made up of 21 circles of wire. Will this coil be enough to complete the job? Let Pi be 3.14.
Mathematics
1 answer:
bogdanovich [222]3 years ago
8 0

Answer: This coil will not be enough to complete the job.

Step-by-step explanation:

The circumference of the coil of wiring can be calculated with:

C=2\pi r

Where r is the radius and \pi=3.14

The radius can be calculated by dividing the diameter by 2. Then:

r=\frac{18in}{2}\\\\r=9in

Convert 9 inches to yards (1 yard=36 inches):

(9in)(\frac{1yd}{36in})=0.25yd

Substitute this radius into the formula:

C=2(3.14)(0.25yd)\\C=1.57yd

Since there are 21 circles of wire, you need to multiply C=1.57yd by 21:

C_T=(1.57yd)(21)=32.97yd

The coil has 32.97 yards of wire and Alex needs 34 yards, therefore, this coil will not be enough  to complete the job.

You might be interested in
shawna reduced the size of a rectangle to a height of 2 inches. What is the new width of it was originally 24 inches in width an
mars1129 [50]
You can make a proportion!!
.
.
24      x
---- = ---- , where x is the width.
12      2
.
So? Cross multiply. 
.
12x=48.
.
Simplify, or isolate x.
.
x = 12.
.
Hope I helped!!
8 0
3 years ago
Nancy shot a 16 on 4 holes of golf. At this rate, what can she expect her score to be if she plays 18 hole? Round to the nearest
Nataliya [291]

Answer:

108.

Step-by-step explanation:

"At this rate, ..." means we're to assume Nancy's score is proportional to the number of holes:

 score/18 = 24/4

Multiplying by 18, we get ...

 score = 18(24/4) = 18(6) = 108

Nancy can expect a score of 108 on 18 holes.

(if this isn't right, tell me and I will make sure to recheck my work :).

3 0
3 years ago
Read 2 more answers
A department store buys 300 shirts at a cost of ​$1 comma 800 and sells them at a selling price of ​$10 each. Find the percent m
ahrayia [7]

Answer:

What are the options?

Step-by-step explanation:

8 0
3 years ago
Point A is located at -5/8 and point B is located at -2/8. What is the distance between points A and B
UNO [17]
I think those are coordinates of points, (-5,8) and (-2,8)
so you just need to use distance formula ((8-8)^2+(-2+5)^2)=0+9=9
square root 9=3
3 0
3 years ago
What is the solution of -6 + a = 22?<br> A 28<br> B. -28<br> 0<br> C. 16<br> D. -16
KatRina [158]

Answer:

A.28

Step-by-step explanation:

Substitute a with 28 so:

-6+28=22

Then simplify the equation:

22=22

6 0
2 years ago
Other questions:
  • IL MARK AS BRAINLIEST PPL
    12·1 answer
  • Someone help please i dont know how to do this
    7·1 answer
  • a dictionary measures 24 centimeters by 20 centimeters. The ratio of its length to its width is about _ to 1
    7·1 answer
  • You estimate that a jar contains 68 marbles. The actual number of marbles is 60. Find the percent error. Round your answer to th
    8·1 answer
  • What is the GCF of x^2-5x amd gow do i solve it
    7·1 answer
  • Forty-eight is what percent of 60
    10·2 answers
  • PLEASE HELP I NEED HELP, WILL MARK BRAINLIEST TO WHOEVER ANSWERS
    14·1 answer
  • Please help me if you do i will give you all stars and a like on your answer! :)
    6·1 answer
  • What's the solution to the system of equations below. <br><br><br><br><br>Hurry please!!!​
    8·2 answers
  • HELP I NEED HELP ASAP
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!