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AleksAgata [21]
2 years ago
8

Helppppp pretty pleaseeee

Mathematics
1 answer:
Galina-37 [17]2 years ago
3 0
bro don’t click the link ☝️
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What is the area of a triangle whose vertices are D(3, 3) , E(3, −1) , and F(−2, −5) ?
kirill [66]

We are given vertices of the triangle DEF as:

D(3, 3) , E(3, −1) , and F(−2, −5) .

Let us plot those points on the graph.

Formula of area of the triangle with vertices (x1,y1), (x2,y2) and (x3,y3).

Area = 1/2 [ (x2-x1)(y3-y1)-(x3-x1)(y2-y1)]

We have x1=3, x2=3, x3=-2, y1=3, y2 =-1 and y3 = -5.

Plugging values in formula, we get

Area = |1/2 [ 3-3)(-5-3)-(-2-3)(-1-3)]|

= |1/2 [ 0(-8) - (-5)(-4)]|

=| 1/2 [0 - 20]|

= |-10|

=10.

<h3>Therefore, area of the triangle with given vertices is 10 square units.</h3>
7 0
3 years ago
. Find their present ages. 6 years ago a man's age was six times the age of his son. 4 years hence, thrice his age will be equal
ddd [48]

<u>The present age of the man is 36 years and his son is 11 years.</u>

Answer:

Solution given:

let the age of man be x.

and his son be y.

By question

x-6=6(y-6)

x=6y-36+6

x=6y-30. ......(1)

and

3(x+4)=8(y+4)

3x+12=8y+32

3x=8y+32-12

3x=8y+20. ...(2)

substituting value of x in equation 2 ,we get

3(6y-30)=8y+20

18y-90=8y+20

18y-8y=90+20

10y=110

y=110/10

y=11 years

again substituting value of y in equation 1 we get

x=6*11-30

x=66-30

x=36 years

5 0
1 year ago
Help me pleaseeeee!!!
Misha Larkins [42]

Answer:

quadrant 4

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
A group of 5 painters takes 21 hours to paint a house. How long would it take a group of 7 painters to paint the same house?
VladimirAG [237]

Answer:

29.4

Step-by-step explanation:

if 5  painters takes 21 hours that makes it 4.5 per person so multiply that by 7 and there you go!

5 0
3 years ago
Read 2 more answers
G. If two triangles have three corresponding angles and three corresponding sides that are
Alex777 [14]

Answer:

Yes.

Step-by-step explanation:

Yes they are because that is the definition of congruency.

4 0
3 years ago
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