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kolezko [41]
3 years ago
7

Need help please and fast thank you

Mathematics
1 answer:
shtirl [24]3 years ago
7 0

Answer:

The second batch

Step-by-step explanation:

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a segment has endpoints at (1, -2) The midpoint is at (-4, -2). What are the cooordinates of the other endpoint?
vfiekz [6]

Answer:

coordinate of the other endpoint is (-9,-2)

Step-by-step explanation:

Given that a segment has endpoints at (1, -2). The midpoint is at (-4, -2).

Now we need to find about what are the coordinates of the other endpoint.

let the coordinates of other end points are (x,y)

Then mid point of (1,-2) and (x,y) is given by mid point formula:

\left(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2}\right)

\left(\frac{x+1}{2},\frac{y-2}{2}\right)=(-4,-2)

\Rightarrow \frac{x+1}{2}=-4, \frac{y-2}{2}=-2

\Rightarrow x+1=-8, y-2=-4

\Rightarrow x=-9, y=-2

hence coordinate of the other endpoint is (-9,-2)

4 0
3 years ago
Given that B, D and F are midpoints, find the length of segment DA.
TiliK225 [7]

Answer:

The length of segment DA is 15 units

Step-by-step explanation:

  • <em>The segment which joining a vertex of  a triangle and the midpoint of the opposite side to this vertex is called a median </em>
  • <em>The point of intersection of the median of a triangle divides each median into two parts the ratio between them is 1: 2 from the base, which means </em><em>the length of the median is 3 times the part from the base</em><em>  </em>

Let us use this rule to solve the question

In Δ AEC

∵ D is the midpoint of EC

∴ AD is a median

∵ B is the midpoint of AC

∴ EB is a median

∵ F is the midpoint of AE

∴ CF is a median

→ The three medians intersected at a point inside the triangle,

   let us called it M

∵ AD ∩ EB ∩ CF at M

∴ M is the point of intersection of the medians of Δ AEC

→ By using the rule above

∴ AD = 3 MD

∵ MD = 5

∴ AD = 3(5)

∴ AD = 15 units

6 0
3 years ago
Read 2 more answers
In a class of 27 students, 7 have a cat and 9 have a dog. There are 5 students who have a cat and a dog. What is the probability
Lelechka [254]

Answer: 5/7

Step-by-step explanation: 27 and 9 are both irrelevant numbers.

If we see here, it is given that they have a cat. 7 people have a cat! And because those 5 students who have both are listed under both categories, there are 5 students in the 7! Therefore, 5/7 is the desired probability...

4 0
3 years ago
Solve for the indicated values.<br> For both
BARSIC [14]

Answer:

CH = 22°

Step-by-step explanation:

We know that Arc AC and Arc CH both equal to 180°, therefore we can say;

AC + CH = 180°

158 + CH = 180°

CH = 180 - 158

CH = 22°

Hope this helps!

5 0
3 years ago
Some money in their budget to pay for them. The members of the choir
sladkih [1.3K]

Answer:

a,c and possibly d

Step-by-step explanation:

3 0
4 years ago
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