28.5 g of iron shot is added to a graduated cylinder containing 45.50 mL of water. the water level rises to the 49.10 mL mark. From this information, calculate the density of iron.

Answers

Answer 1
Answer:

7.92 g/cm³ is the density of the iron sheet.

Density is calculated by the formula:

= Mass / Volume

The mass here is 28.5 g

The Volume is:

= Volume of water after iron shot added - Volume before shot added

= 49.10 - 45.50

= 3.6 mL

The units for density is g / cm³ so you need to convert the mL to cm³.

1 cm³ = 1 mL

3.6 mL is therefore 3.6 cm³.

Density is:

= 28.5 / 3.6

= 7.92 g / cm³

In conclusion, the density of the iron shot is 7.92 g /cm³.

Find out more at brainly.com/question/8287765.

Answer 2
Answer: Density=mass/volume.
1) we have to calculate the iron volume in liters.
iron volume=second level - first level=49.10 ml-45.50 ml=3.6 ml
3.6 ml=3.6 ml(1 liter / 1000 ml)=0.0036 liters 

2) we calculate the mass iron in kg.
28.5 g=28.5 g(1 kg /1000 g)=0.0285 kg.
2) we calculate the density of iron.
density=0.0285 kg / 0.0036 liters=7.92 kg/L

7.92 kg/l=7.92 kg/L(1000 g/1Kg)(1000 cm³/1 L)=7.92 g/cm³.

answer: From this information the Iron density is 7.92 Kg/L or  7.92 g/cm³.

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1.25, 12,5%, 1.257 x 10-2

Order from least to greatest

Answers

1.25, 12.5, and 1.257 x 10-2

Two standard number cubes are rolled  Find each probability.12. P(a sum equal to 12)

13. P(sum not equal to 2 )

14. P(a product equal to 15)

15. P( a product not equal to 15)

Answers

Answer:

im sorry i suck at math

Step-by-step explanation:

12. 6,6 8,4 4,8 1/4 25%

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Please I need full answer
The solution for \( x \) of the equation \( 8 e^{x}-1=0 \) is

Answers

Answer:

Step-by-step explanation:

The equation \(8e^x - 1 = 0\) can be solved to find the value of \(x\).

To solve for \(x\), we need to isolate the exponential term, \(e^x\).

Here are the steps to solve the equation:

1. Add 1 to both sides of the equation to isolate the exponential term:

\(8e^x = 1\)

2. Divide both sides of the equation by 8:

\(\frac{{8e^x}}{8} = \frac{1}{8}\)

3. Simplify:

\(e^x = \frac{1}{8}\)

4. To solve for \(x\), we can take the natural logarithm (ln) of both sides of the equation:

\(\ln(e^x) = \ln\left(\frac{1}{8}\right)\)

5. Since \(\ln(e^x)\) and \(e^x\) are inverse functions, they cancel each other out:

\(x = \ln\left(\frac{1}{8}\right)\)

6. Use the properties of logarithms to simplify further:

\(x = \ln(1) - \ln(8)\)

7. Simplify:

\(x = -\ln(8)\)

Therefore, the solution for \(x\) in the equation \(8e^x - 1 = 0\) is \(x = -\ln(8)\).

Calculate the average speed of a gazelle that runs 140 meters in 5.0 seconds.

Answers

Answer:

Average speed(S) is given by:

S =(D)/(t)              ....[1]

where,

D is the total distance and t is the time.

As per the statement:

A gazelle that runs 140 meters in 5.0 seconds.

⇒D = 140 meters and t = 5 seconds

Substitute in [1] we have;

S =(140)/(5)

Simplify:

⇒S = 28 m/sec

Therefore, average speed of a gazelle is, 28 m/sec

You would multiply to find the average meters/minute.
140 x 5.0 = 700.
But, if you're looking for average m/s you would divide.
140/5 = 28.
If you want meters/hour, you have to multiply the average meters/minute by 60.
140 x 5 x 60 = 4,200.

I'm not sure which one you're looking for but I hope something I wrote helps!

2/3 of a some of money is 48p. What is 5/8 of the sum of money?

Answers

Let the sum of money be x
so 2/3 of x = 48p
so x = 48*3/2 = 72p
so 5/8 of the sum of money = 5/8*72 = 45p

Mrs. Colen took a trip. She drove 350 miles in 7 hours and 30 minuets. what is her average speed to the nearest tenth of a mile per hour

Answers

diatance travelled by her= 350 miles
amount of time taken by her to travel 350 miles= 7 hrs 30 mins
                                                                      =450 mins
 average speed travelled by her to the nearest tenth of a mile per hour= 450*60/100
                                                                                                      =270/10
                                                                                                      =27
 therefore he travelled 27 miles to the nearest tenth of a mile per hour.   

7 hours and 30 minutes is 7.5 hours. Average speed can be found by taking distance and dividing it by time. 350 miles/7.5 hours=46.6666 miles per hour. Rounded to the nearest 10th that is 46.7 mi/hr