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Savatey [412]
3 years ago
10

Find the area of a triangle with the vertices (5,4) (9,7) (1,6)

Mathematics
1 answer:
andreev551 [17]3 years ago
7 0

u multiply each number with the number diagonal to it!

the area is half of the products of the numbers which were multiplied to the numbers SE to them minus the products of numbers which were multiplied to numbers southwest to them

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PLS HELP ILL MARK BRAINLYEST
Vitek1552 [10]

Answer:

Step-by-step explanation:

1 - a

2 - c

3 - b

5 0
2 years ago
Please give me the answer to number 5 and explain how to do it.
Goryan [66]
The equation is simply 8s where s is the length of a side. There are 8 sides. You are just adding the length of all 8 sides together to get the perimeter.
4 0
2 years ago
The exact value of cos 13pi/8 is
Naily [24]

Answer:

answer is : Cos(13pi/8) = 0.3826  

Step-by-step explanation:

We have, Cos (13pi/8)

Since 13pi/8 can be shown as 3pi/2 < 13pi/8 < 2pi

Hence 13pi/8 lies on fourth quadrant.

In fourth quadrant cosine will be positive.

Cos (13pi/8) = cos(3pi/2 + pi/8)

applying formula cos(A+B) = cos A cosB - sinAsinB

i.e Cos(3pi/2 + pi/8) = cos(3pi/2)cos(pi/8) - sin(3pi/2)sin(pi/8)

∵ Remember cos(3pi/2) =0 , sin(3pi/2) = -1

     Cos(3pi/2 + pi/8) = 0 cos(pi/8) - (-1)sin(pi/8)

     Cos(3pi/2 + pi/8) = 0  + 0.3826

      Cos(3pi/2 + pi/8) = 0.3826

Hence we got Cos(13pi/8) = 0.3826                          

6 0
3 years ago
Read 2 more answers
If you write 0.00002836 in scientific notation, what exponent completes the notation?
rosijanka [135]
2.836x10^-5 is going to be your answer
6 0
3 years ago
Pls... it’s my last question worth branliest
katrin [286]

Answer:

6/20, No

4/26, No

2/6, Yes(divide by 4)

1/3, Yes(divide by 8)

Step-by-step explanation:

:)

3 0
2 years ago
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