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
olga_2 [115]
3 years ago
12

A student drops a penny from the top of a tower and decides that she will establish a coordinate system in which the direction o

f the penny's motion is positive. what is the sign of the acceleration of the penny?
Mathematics
2 answers:
Ipatiy [6.2K]3 years ago
7 0

Answer:

It's positive

Step-by-step explanation:

Elenna [48]3 years ago
4 0

Answer:

The sign of acceleration is positive.

Step-by-step explanation:

Consider the provided information.

It is given that A student drops a penny from the top of a tower and decides that she will establish a coordinate system in which the direction of the penny's motion is positive.

Here the direction of the velocity is positive,  and the velocity is increasing.

Acceleration is defined as the rate at which an object changes its velocity.

Since velocity is positive therefore the acceleration is also positive.

Hence, the sign of acceleration is positive.

You might be interested in
Suppose the half-life of a certain radioactive substance is 12 days. Find the time when there will be 20% of the initial substan
vazorg [7]

Answer: 2.4% I think

12 x 20 / 100 = 2.4%

7 0
3 years ago
Someone help me please
Orlov [11]

Answer:

A 500.00 look there's a pattern

5 0
3 years ago
Please help me find y and show work/steps. I don't know how to do it
trasher [3.6K]

We will check if y and 60cm are parallel.

If the lengths 28cm, 56cm and 15cm, 30cm are in proportion, then y and the segment 60cm are parallel.

\dfrac{56}{28}=\dfrac{30}{15}\\\\2=2\qquad CORRECT!

OK. We know: y and 60cm are parallel. Therefore we have equation:

\dfrac{y}{28+56}=\dfrac{60}{56}\\\\\dfrac{y}{84}=\dfrac{15}{14}\qquad|\text{cross multiply}\\\\14y=15\cdot84\qquad|\text{divide both sides by 14}\\\\y=90cm

<h3>Answer: y = 90 cm.</h3>
5 0
3 years ago
Read 2 more answers
Describe the meaning of the rate.
Usimov [2.4K]
Meaning of the rate: 6 days each month.
The answer is A. Something happens 6 days per month.
This means that in every month, there are available 6 days that let you do something. 
Example in the GYm, you have 6 days per month free gym usage.
5 0
3 years ago
A human gene carries a certain disease from the mother to the child with a probability rate of 70%. suppose a female carrier of
Sergeeva-Olga [200]
The probability of at least one child inheriting the disease can be given by
<em>P</em>(<em>X</em> ≥ 1) = 1 - <em>P</em>(<em>X</em> = 0).  This is because the only choice other than at least one child inheriting the disease is that no children get it.
Since there is a 70% or 0.7 chance that each child will inherit it, there is a 30% or 0.3 chance that they will not.  This gives us
1 - <em>P</em>(<em>X</em> = 0) = 1 - (0.3)(0.3)(0.3) = 1 - 0.027 = 0.973
There is a 97.3% chance that at least one of the children will get the disease from their mother.
4 0
3 years ago
Other questions:
  • Pleaseee I need help on this one too
    12·1 answer
  • the expression 6x +15 represents the total cost of a bicycle rental. When Danny rents a bike for 2 hours the total cost is 27 do
    14·1 answer
  • ∆ABC rotates around point D to create ∆A'B'C'. However, only is shown. Based on the position of , what are the coordinates of A'
    9·2 answers
  • A polynomial function, f(x), with rational coefficients has roots of –2 and square root of 3. The irrational conjugates theorem
    11·2 answers
  • Write the sum using summation notation, assuming the suggested pattern continues. 4-24+144-864+...
    12·2 answers
  • What is the area of a regular pentagon with a side length of 9 millimeters and an apothem length of 6.2 millimeters?
    14·1 answer
  • Gail is making costumes for a school play. Each rabbit costume needs one and one half yards of white fur fabric, a yard of blue
    15·2 answers
  • Can anybody answer this for 100 points ?
    6·2 answers
  • Explain why employers often employ young females instead of young males<br>​
    14·1 answer
  • I Need Answer Immediately!!!!!!!
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!