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Igoryamba
3 years ago
7

15 POINTS AND BRAINLIEST ANSWER!!

Mathematics
2 answers:
lisov135 [29]3 years ago
6 0
Copper: density ≤ 3.4 
Iron: density=2.26

Before: 200 t
After: 800 t
Ede4ka [16]3 years ago
3 0

Answer:

density of iron is 7.8g/cm cubed

density of copper is 8.3g/cm cubed

Step-by-step explanation:

density =mass/volume

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Whats the product of (5r+2)(3r-4)
fenix001 [56]

Answer:

6797

Step-by-step explanation:

4 0
3 years ago
PLEASE HELP ME I NEED HELP NOW AND NO ONE IS ANSWERING
Oksanka [162]
All the choices are correct.

_____
In our base-10 number system, moving a digit one place to the left multiplies its value by 10. Moving it one place to the right multiplies its value by 1/10.

You know already that 1,000 has 10 times the value of 100, and 1/10 the value of 10,000.
4 0
3 years ago
The value of -7 + 24 ÷ (-3)(2) is _____.<br><br> Show work
densk [106]

Answer:

\boxed{=-23}

Explanation: You had to used pemdas stands for: p-parenthesis, e-exponents, m-multiply, d-divide, a-add, and s-subtracting that came from left to right.

First you had to multiply and divide from left to right.

24/(-3)=-8(2)

8*2=16

-7-16

Then you add and subtract from left to right.

-7-16=-23

=-23

Final answer: \boxed{=-23}

Hope this helps!

And thank you for posting your question at here on brainly, and have a great day.

-Charlie

3 0
3 years ago
Leigh has a piece of rope that is 6 2/3 feet long. How do you write 6 2/3 as a fraction greater than 1
aleksley [76]
20/3 - Take the 6 2/3, multiply the 6 and the 3 (6 x 3 = 18), then add the 2 (18 + 2 = 20). Put that number over the original 3 and you've got yourself a mixed number.
4 0
3 years ago
Read 2 more answers
A bag with 12 marbles has 3 red marbles and 5 yellow marbles. A marble is chosen from the bag at random. What is the probability
alexgriva [62]

Answer:

3/12 = 1/4

Step-by-step explanation:

There are 12 marbles in the bag.  If the marble drawn at random is red, it is one of the 3 red marbles.

The probability is "3 out of 12" = 3/12 which simplifies to 1/4.

7 0
3 years ago
Read 2 more answers
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