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
Romashka [77]
3 years ago
15

A nickel has a mass of 5 grams. There are 40 nickels in a row of nickels what is the mass of a roll of nickels

Mathematics
2 answers:
EleoNora [17]3 years ago
4 0
It would weigh about 200 grams.
timofeeve [1]3 years ago
4 0
200 gram is the right answer !
You might be interested in
A sociologist develops a test to measure attitudes towards public transportation, and 27 randomly selected subjects are given th
taurus [48]

Answer:

The margin of error for the 95% confidence interval for the mean score of all such subjects is of 8.45.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 27 - 1 = 26

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 26 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.0518

The margin of error is:

M = T\frac{s}{\sqrt{n}}

In which s is the standard deviation of the sample and n is the size of the sample.

In this question:

n = 27, s = 21.4. So

M = 2.0518\frac{21.4}{\sqrt{27}}

M = 8.45

The margin of error for the 95% confidence interval for the mean score of all such subjects is of 8.45.

5 0
3 years ago
I need help with fractions :(
bearhunter [10]

Answer:

x = 0, Need the steps?

STEPS:

9x - 7 = -7 (Original Problem)

9x = 0 (Add 7 to both sides)

x = 0 (Divide both sides by 9)

8 0
3 years ago
Read 2 more answers
What is 105,159 round to the nearest ten thousand is
viva [34]
105,000 would be the correct answer to your problem.
3 0
3 years ago
2.386 rounded to the nearest tenth
svetoff [14.1K]

Answer:

Los números decimales son una combinación de números enteros y números que se encuentran entre los números enteros. A veces es importante poder comparar decimales para saber cuál es mayor. Por ejemplo, si alguien corrió los 100 metros planos en 10.57 segundos, y alguien más los corrió en 10.67 segundos, puedes comparar los decimales para determinar qué tiempo es más rápido. Saber cómo comparar decimales requiere el entendimiento del valor de posición decimal, y es similar a comprar números enteros.

 

Cuando trabajamos con decimales, hay veces que no se necesita un número preciso. En tal caso, es útil redondear números decimales. Por ejemplo, si la bomba de una gasolinera muestra que llenaste el tanque del carro de un amigo con 16.478 galones de gasolina, podrías querer redondear el número y decirle a tu amigo que le pusiste 16.5 galones.

Step-by-step explanation:

Otra forma de comparar decimales es comparar los dígitos en cada número, empezando con el lugar de posición mayor, que es el de la izquierda. Cuando un dígito en un número decimal es mayor que el dígito correspondiente en el otro número, entonces ése número decimal es mayor.

 

Por ejemplo, primero compara los dígitos de las décimas. Si son iguales, continúa con el lugar de las centésimas. Si esos dígitos no son iguales, el decimal con el dígito mayor es el número decimal mayor. Observa cómo se hace esto en los ejemplos siguientes.

6 0
2 years ago
What is the solution set?<br><br> A.) (0, -2)<br> B.) (2, 0)<br> C.) (7, 0)<br> D.) (5, 3)
max2010maxim [7]

Answer:

D.) (5, 3)

Step-by-step explanation:

Solution is where two lines intersect

Both lines intersect at x = 5 and y = 3

Answer

D.) (5, 3)

8 0
2 years ago
Other questions:
  • What is the area of the figure? A figure can be broken into 2 rectangles. One rectangle has a base of 4 meters and height of 5.2
    6·1 answer
  • Please help! 11 pts.
    10·2 answers
  • How to solve 3p^2-2p-5 step by step without splitting the middle term
    15·1 answer
  • Use the expressions that represent the length and width of the game board to write an equation that models the area of the figur
    5·1 answer
  • Fill in the missing word an unknow or changeable quantity is called an
    13·2 answers
  • What is the length of QR
    10·2 answers
  • Write the set of coordinates for a reflection of the figure over
    13·2 answers
  • 50:15
    8·1 answer
  • The formula to find the surface area (S) of a rectangular prism with a length (l), a width (w) and a height (h) is:
    9·2 answers
  • A researcher is testing a claim that the mean wing span of bald eagles mean wing span is 22ft. He takes a simple random sample o
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!