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arsen [322]
3 years ago
11

What is the area of a regular 15-gon with a perimeter of 90 m

Mathematics
1 answer:
Nikitich [7]3 years ago
5 0
 I think the perimeter is at least 6m
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Plot point C(2,7). If M is the midpoint of CD , what are the coordinates of D?
Y_Kistochka [10]

Answer:

The coordinates of D is (-4,-9)

Step-by-step explanation:

Given

C = (2,7)

<em>M=(-1,-1)  ----- Missing part of question</em>

Required

Determine the coordinates of D

<em>Let the coordinates of D be (x₂,y₂)</em>

<em>We'll solve this question using mid point formula;</em>

<em></em>M(x,y) = (\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})<em></em>

<em>Where</em>

C(x_1,y_1) = (2,7)    and     M(x,y) = (-1,-1)

Put these values in the formula

(-1,-1) = (\frac{2+x_2}{2},\frac{7+y_2}{2})

By comparison;

-1 = \frac{2+x_2}{2}  and -1 = \frac{7+y_2}{2}

-1 = \frac{2+x_2}{2}

Multiply both sides by 2

-2 = 2 + x_2

Subtract 2 from both sides

-2 -2 = x_2

x_2 = -4

-1 = \frac{7+y_2}{2}

Multiply both sides by 2

-2 = 7 + y_2

Subtract 7 from both sides

-2 - 7 = y_2

y_2 = -9

<em>Hence, the coordinates of D is (-4,-9)</em>

4 0
3 years ago
What are the points
Goryan [66]

Answer:

There are 9 dots. So 9.

Step-by-step explanation:

Just take my word for it.

7 0
3 years ago
4 friends share 5 bars what is each person's shere
Papessa [141]
Each person gets 1 1/4 bars. 

You divide the 5 bars by 4 people: 5/4 = 1 1/4
4 0
3 years ago
Read 2 more answers
HELP ME PLEASE !!!!!!!!
german

Answer:

the answer is the top one and the last one. Hope it helped :)

4 0
2 years ago
Todd has 2 frogs. This is 1/3 the number of frogs that Heather has. How many frogs does Heather have?
Murljashka [212]
2=1/3H
H=2*3
Heather has 6 frogs
5 0
3 years ago
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