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
rewona [7]
3 years ago
10

Ben went to the hardware store and bought 7 pieces of rope of equal length. The total length of the ropes was 56 meters. How lon

g was each rope?
Mathematics
1 answer:
Harman [31]3 years ago
6 0

Answer:

8 meters

Step-by-step explanation:

56 / 7 = 8

You might be interested in
he radioactive element​ carbon-14 has a​ half-life of 5750 years. A scientist determined that the bones from a mastodon had lost
elena-s [515]

Answer:

The bones were 12,485 years old at the time they were​ discovered.

Step-by-step explanation:

Amount of the element:

The amount of the element after t years is given by the following equation, considering the decay rate proportional to the amount present:

A(t) = A(0)e^{-kt}

In which A(0) is the initial amount and k is the decay rate, as a decimal.

The radioactive element​ carbon-14 has a​ half-life of 5750 years.

This means that A(5750) = 0.5A(0), and we use this to find k. So

A(t) = A(0)e^{-kt}

0.5A(0) = A(0)e^{-5750k}

e^{-5750k} = 0.5

\ln{e^{-5750k}} = \ln{0.5}

-5750k = \ln{0.5}

k = -\frac{\ln{0.5}}{5750}

k = 0.00012054733

So

A(t) = A(0)e^{-0.00012054733t}

A scientist determined that the bones from a mastodon had lost 77.8 ​% of their​ carbon-14. How old were the bones at the time they were​ discovered?

Had 100 - 77.8 = 22.2% remaining, so this is t for which:

A(t) = 0.222A(0)

Then

0.222A(0) = A(0)e^{-0.00012054733t}

e^{-0.00012054733t} = 0.222

\ln{e^{-0.00012054733t}} = \ln{0.222}

-0.00012054733t = \ln{0.222}

t = -\frac{\ln{0.222}}{0.00012054733}

t = 12485

The bones were 12,485 years old at the time they were​ discovered.

8 0
3 years ago
3) How many whole 3s are there inside of 4½?
tankabanditka [31]

Answer:

1

Step-by-step explanation:

There is one whole 3 inside of 4 1/2 or 4.5.

Multiples of 3 are 3x1=3   3x2=6....

Only a single whole 3 can be inside of 4.5.

5 0
1 year ago
Read 2 more answers
The sum of the digits of a two-digit number is 5. If nine is subtracted from the number, the digits will be reversed. Find the n
Komok [63]
The number is 32
X-9=23
5 0
2 years ago
What does h(40)=1820 mean in terms of the problem ? Help please
Bess [88]

Answer:h stands for hours so if they worked 40 hours they would get paid 1820 dollars

Step-by-step explanation:

5 0
3 years ago
Someone pls help me solve this ;-;
Mazyrski [523]
5∛x + 4 = 44
5∛x = 40
  ∛x = 8
    x = 8^3
    x = 512

answer
C. 512
8 0
3 years ago
Other questions:
  • Yesterday the cafeteria collected $91.35 for milk. If each milk cost $0.35. How many milks were purchased yesterday?
    14·2 answers
  • Please help ASAP on #4,6 please I'll give you brainliest​
    8·1 answer
  • Numbers 4-12 and 13-16 I don't get
    7·1 answer
  • A and b pls pls pls number 2 a and b
    9·2 answers
  • What is the degree of the polynomial below 7x^5+6x^3+4x+2
    6·1 answer
  • How many of the numbers from 10 through 98 have the sum of their digits equal to a perfect​ square?
    11·1 answer
  • Samuel's exit ticket is correct, because he multiplied both sides of the equation by seven, using the Multiplication Property of
    7·1 answer
  • Find the slope of the line $5x + 2y = -9.$
    6·1 answer
  • After testing out your skateboard ramp, you and your friends decide that it’s too steep. You decide to redesign the ramp so that
    9·1 answer
  • Sam is 6 years older than mia. mia is 3 years younger than alice. if sam is 19 years old, how old is alice?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!