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
ololo11 [35]
3 years ago
7

A 63 inch long string is cut into pieces so that their lengths form a sequence. First, a 1 inch piece is cut from the string, an

d each successive piece that is cut is twice as long as the previous piece cut. In how many pieces can the original length of string be cut in this way?
Mathematics
1 answer:
IgorC [24]3 years ago
6 0
There are fancy ways of doing this sort of thing, however from my experience in exams you are frankly best working this out by inspection and not worrying about doing it in a fancy way - the examiners want to test your mathematical aptitude not your ability to memorise complex methods.

The sequence of doubling can be done at light speed in your head, 1 2 4 8 16 32 etc.
Let's have a stab and go for 32:
32+16+8+4+2+1 = 63 - magic, inspection works better than whatever the formula book says (that's my pro tip tbh)
Remember however since the answer is exact, the last 32 inch piece does not need to be cut, therefore the string is cut 5 times.
You might be interested in
How do you solve the equation 3w-(-4)=8-w
Anit [1.1K]
3w-(-4)=8-w
4w+4=8
4w=4
w=1
8 0
3 years ago
is (3,-3) a solution to the system 5x+4y=3, 2x-5y=19 need to be taught step by step please and thank you.
8090 [49]
Basically all you’re doing is plugging in the inputs to the equations and see if they’re correct.

5(3)+4(-3)=3 this proves to be true
2(3)-5(-3)=21 not 19
8 0
3 years ago
Read 2 more answers
Write as a decimal.<br> Twenty-two hundredths
professor190 [17]

Answer:

.22

twenty two hundredths as a decimal.

3 0
3 years ago
Read 2 more answers
5/8=n-2/10<br><br> 9/x=10/x-7<br><br> p+9/p=3/10
lesya692 [45]
Download photo math for equations like this, it will also give you it step by step :)
4 0
2 years ago
I need help quick please
qwelly [4]
A=90
B=53
The reason I am saying this is because you can see the 90 degree angle in A
8 0
2 years ago
Read 2 more answers
Other questions:
  • Find the value of each polynomial when (a) x=0 and (b)= -1<br> 15). x^2-5x-2
    12·1 answer
  • Please help! <br> What is the median of the data set represented by the dot plot?
    6·1 answer
  • What 2 numbers add up to 37 and multiply to -210?
    11·1 answer
  • A set of stairs is being built as shown.
    10·2 answers
  • What percent of 126 is 22?
    15·2 answers
  • Factor 391, 291, 387, 113, 451, 37, 411, 239, and 459 to prime factors
    10·1 answer
  • Can anyone help me answer this<br>​
    8·1 answer
  • Simplify the expression:<br> (26 - 3)(-6) =
    6·1 answer
  • this is due in less the 30 minutes and this is my last question on the assignment please help and show work. will give brainlies
    10·2 answers
  • I am struggling with my math. help me please<br><br><br>HELP ME!!!!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!