can you help me please​

Answer:

The coordinates of the other endpoint are (-1,1).

Explanation:

Mid point = (2,-4)

One endpoint = (5,-9)

We need to find the coordinates of the other mid points. Let it is (x₂,y₂). Using the mid point formula to find it.

[tex]\text{Mid-points}(x_m,y_m)=(\dfrac{x_1+x_2}{2}, \dfrac{y_1+y_2}{2})[/tex]

We have, [tex]x_m=2, y_m=-4, x_1=5, y_1=-9[/tex]

[tex]\text{Mid-points}(2,-4)=(\dfrac{5+x_2}{2}, \dfrac{(-9)+y_2}{2})\\\\\dfrac{5+x_2}{2}=2\ \text{and}\ \dfrac{y_2-9}{2}=-4\\\\5+x_2=4\ \text{and}\ y_2-9=-8\\\\x_2=-1\ \text{and}\ y_2=1[/tex]

So, the coordinates of the other endpoint are (-1,1).

Answer:

Option C. 2 half lives.

Explanation:

The following data were obtained from the question:

Original amount (N₀) = 1000 atoms

Amount remaining (N) = 250 atoms

Number of half-lives (n) =?

Half-life is defined as the time taken for the substance to reduce to half its original side. Mathematically, it can be obtained as follow:

N = 1/2ⁿ × N₀

N is the amount remaining.

n is the number of half-lives.

N₀ is the original amount.

Using the above formula, we can obtain the number of half-lives as follow:

Original amount (N₀) = 1000 atoms

Amount remaining (N) = 250 atoms

Number of half-lives (n) =?

N = 1/2ⁿ × N₀

250 = 1/2ⁿ × 1000

Cross multiply

250 × 2ⁿ = 1000

Divide both side by 250

2ⁿ = 1000/250

2ⁿ = 4

Express 4 in index form

2ⁿ = 2²

n = 2

Therefore, it will take two (2) half lives for the amount to get to 250 atoms.

Answer:

The material moved by erosion is sediment. Deposition occurs when the agents, usually wind or water, of erosion lay down sediment. Deposition changes the shape of the land. Water's movements (both on land and underground) cause weathering and erosion, which change the land's surface features and create underground formations.

Explanation:

Answer:

A convergent oceanic-continental plate boundary (subduction boundaries).

Explanation:

Volcanoes form two types of plate boundaries, but also in the interior of the continental plates where there are hot spots below. The two types of plate boundaries where volcanoes can be found are the convergent and divergent plate boundaries, with the first ones having the vast majority of the volcanoes above the surface, while the second ones have the vast majority below the water surface.

At convergent plate boundaries, especially where continental and oceanic plates collide, there are volcanoes all across the plate boundary. This is due to the formation of a subduction zone, where the crust gest much more fragile around it and magma manages to push through and come out on the surface very easily. In practice, this can easily be seen by the fact that the majority of the volcanoes are found in the so-called ''Ring of Fire'' where there are numerous convergent boundaries between continental and oceanic plates.

Answer:

In higher altitudes, the air is usually colder, less dense, and has less oxygen molecules. This means that if you were there, you would need to take more breaths to get the same amount of oxygen as you would at lower altitudes. Higher elevation makes it even harder to breathe.

Explanation:

Hope this info helps!