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svetoff [14.1K]
3 years ago
7

A meteorite is a solid piece of debris from an asteroid or comet that traveled from outer space to reach Earth's surface. There,

it turns a rusty, reddish-brown color over time. Based on this information, which of the following can be concluded about the physical composition of the asteroid or comet that this meteorite came from? A It contains gold. B It contains glass. C It contains sand. D It contains iron plzzz helppppp
Mathematics
2 answers:
djverab [1.8K]3 years ago
7 0

Answer:

D

Step-by-step explanation:

When iron reacts with air and water, it forms Iron (III) oxide, also known as rust, which is reddish-brown.

Dafna11 [192]3 years ago
4 0

Answer: D

--

Hope this helps

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In 20 years charlie will be three times as old as he is now.how old is charlie is he now
Sati [7]

Answer:

10 years old

Step-by-step explanation:

let his age be x , then in 20 years

x + 20 = 3x ( subtract x from both sides )

20 = 2x ( divide both sides by 2 )

10 = x

Charlie is 10 years old

8 0
3 years ago
Ps help me with this its urgent❤
Llana [10]

Answer:

y^6/x^2

Step-by-step explanation:

(y^3/2x^-1/2)^4= y^(4*3/2)x^(-1/2*4)=y^6x^-2= y^6/x^2

6 0
4 years ago
Can you plz plz help
nika2105 [10]

Answer:

-2/3y - 2/3x

Step-by-step explanation:

Just distribute and multiply the equation

7 0
3 years ago
For what values of a and b does a - b = b - a?
Deffense [45]

how can a+b=0?

is a+b=0 a single word followed by the question mark ? the sentence is not complete if “a+b=0” is the subject, it’s like: how can cat?

is the sentence rather: how can a+b be equal to 0 ( meaning zero) ? in that case, supposing we are talking of the usual sum of two elements of an additive group : how can the sum of a and b, written a+b, can be equal to zero, then this seems more like a question about what powers do have any two elements of a group to, by association through addition, to obtain a zero value. Like “how can my brother and me get one of these chocolates ?”

MORE

|

|

v

Now, in your question, maybe a and b are not any two elements of said group but elements well identified before,

suppose you know a is 1 and b is -1 for instance. Then how can 1–1=0? is a very good question : it marvels at the fact that the addition does what it is supposed to do. Lots of things don’t, and lots of people take it for granted that things do what they are supposed to de, like speeds add up, etc.

let’s suppose for example, a is 1 and b is 2.

Then your question is very justified : how can 1+2 be equal to 0 ? it’s a scandal, either the computer is broken, or my mind is , and if anywhere in the world 1+2 =0, there is something wrong with the world.

-----

Hope this helps!! - Maddy  

(if this helps please make brainliest, rate, and thank so I know how I did!)

╰(*°▽°*)╯

3 0
3 years ago
What would be the equation of the cannonball’s path if it was launched with the same velocity, but from the ground instead?
natita [175]

The quadratic equation cannonball’s path if it was launched with the same velocity, but from the ground instead would be given by:

h(t) = -4.9t^2 + 19.8t

<h3>What is the quadratic equation for the height of a projectile?</h3>

Considering the gravity, it is modeled by:

h(t) = -4.9t^2 + v_0t + h_0

In which:

  • v_0 is the initial velocity.
  • h_0 is the initial height.

For this problem, we want:

  • The same initial velocity, hence v_0 = 19.8.
  • Launched from the ground, hence h_0 = 0.

Then, the equation is:

h(t) = -4.9t^2 + 19.8t

More can be learned about quadratic equations at brainly.com/question/24737967

3 0
3 years ago
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