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3 years ago

What is the area of this triangle? (x1, y2) (x3,y3) (x1,y1)

Mathematics

1 answer:

melamori03 [73]3 years ago

4 0

I hope this helps you

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What is the solution to this equation 1/2n^2+18=0

ololo11 [35]

Answer:

n = ±6 .

Step-by-step explanation:

A quadratic equation is given to us and we need to find out the solution of the given equation . The given equation is ,

$\rm\implies -\dfrac{1}{2}n^2+18=0$

Subtracting 18 both sides ,

$\rm\implies -\dfrac{1}{2}n^2 = -18$

Multiplying both sides by -2 ,

$\rm\implies -2\times\dfrac{1}{2}n^2 = -2\times -18$

On simplyfing , we get ,

$\rm\implies n^2= 36$

Putting squareroot both sides ,

$\rm\implies n= \sqrt{36}$

This equals to ,

$\rm\implies \boxed{\quad\blue{\rm n =\pm 6 }}$

Hence the value of n is ±6 .

6 0

3 years ago

Can a triangle be drawn with side lengths 8.4 inches, 9.2 inches, and 17 inches?

sasho [114]

Answer:

yes

Step-by-step explanation:

based on the triangle inequality theorem, add the two smallest numbers together (8.4,9.2) to get 17.6 which is bigger than 17

3 0

3 years ago

bag contains 6 red marbles and 12 yellow marbles. If a representative sample contains 3 red marbles, then how many marbles woul

Dafna11 [192]

I think 6 because it’s a ratio

Because the yellow would always be twice as much as the red so 3x2 is 6 just like 6x2=12

7 0

3 years ago

Find the sum of (x + 5) and (2x + 3)

Genrish500 [490]

What you can do is subtract 1x from each side
Then you subtract 3 from each side
Then it tells you x=2
Always put what you think x is back into the problem and see if it works out

Example on how you do it:
(x+5)=(2x+3)
5=(x+3)
2=x

7 0

3 years ago

What is the volume of 5cm 2cm 8cm.

Soloha48 [4]

Answer:

80 cm

Step-by-step explanation:

(5 x 8) x 2

40 x 2

80 cm

5 0

3 years ago

Read 2 more answers