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Blizzard [7]
3 years ago
6

What is the area of triangle ABC?

Mathematics
1 answer:
miskamm [114]3 years ago
8 0

Answer:

<h2>7 square units</h2>

Step-by-step explanation:

As you can observe in the image attached, we know the coordinates of each vertex of the triangle.

To find the area using only its vertex coordinates, we need to use the following formula

A=\frac{1}{2}[x_{1}(y_{2} -y_{3}+x_{2}(y_{3} -y_{1} )+x_{3}(y_{1}-y_{2}  )   )

Where the coordinates are

A(1,1)\\B(4,0)\\C(3,5)

Replacing coordinates, we have

A=\frac{1}{2}[1(0 -5)+4(5 -1 )+3(1-0  )  ]\\A=\frac{1}{2} [-5+16+3]=\frac{1}{2}(14)\\ A=7

Therefore, the area of the triangle is 7 square units. So, the right answer is the second choice.

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(5a+15b) e divizibil cu 5<br><br> va rogg e urgent
34kurt

Answer:

<h2>a + 3b</h2>

Step-by-step explanation:

\frac{5a + 15b}{5 }

\frac{5a}{5}  + \frac{15b}{5}

a + 3b

4 0
2 years ago
I don’t know how to do this I am very bad at math
maw [93]

Answer:

Surface area= 7.5

Step-by-step explanation:

The area of a triangle is b*h/2. so if you fill in the numbers your equation would be 5*3/2. 5*3=15 and 15/2=7.5

hope this helps!!

5 0
3 years ago
Sweaters are $3 for $50. Leslie and her mother spent $100 on sweaters. How many did they buy
inn [45]

Answer:

6

Step-by-step explanation:

5 0
2 years ago
50 pts please help asap (:
andriy [413]

Answer:

d. 8 units

Step-by-step explanation:

If AC = 16 units then the length of CB is 8 units because DB is perpendicular bisector from the centre of circle.

3 0
3 years ago
How do I solve this question?
Montano1993 [528]

Answer:

p = \frac{3}{2} , q = 9

Step-by-step explanation:

4x² + 12x ( factor out 4 from each term )

= 4(x² + 3x)

Using the method of completing the square

add/subtract ( half the coefficient of the x- term)² to x² + 3x

= 4(x² + 2(\frac{3}{2} )x + \frac{9}{4} - \frac{9}{4} )

= 4(x + \frac{3}{2} )² - 4 × \frac{9}{4}

= 4(x + \frac{3}{2} )² - 9

4 0
2 years ago
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