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3 years ago

How many different isosceles right triangles can be formed from three dots in the grid below? Two examples are shown.

Mathematics

1 answer:

oksano4ka [1.4K]3 years ago

8 0

Answer:

Step-by-step explanation:

The attached figure shows 7 triangles (counting the original 2). Each has degree-4 rotational symmetry about the center of the figure, so there can be 7×4 = 28 triangles.

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I NEED HELP ASAP PLEASE AND THANK YOU What is the axis of symmetry? y= -3 (x-2) (x-4)

Lina20 [59]

The axis of symmetry is x=3

3 0

2 years ago

-4/9x=16/27 alguien que me ayude

Andre45 [30]

<h3>Answer</h3>

First multiply everything by 27

$- \frac{4}{9} x = \frac{16}{27} = \\ 27 \times ( - \frac{4 }{9}x) = 27 \times \frac{16}{27}$

Then approximate the terms with 27 if it's possible (27 and 9) (27 and 27)

$3 \times ( - \frac{4}{1} ) = 16$

So now multiply again

$3 \times ( - 4) = - 12$

And you have

$- 12x = 16$

$x = - \frac{16}{12} = - \frac{4}{3}$

You're welcome if it's right

4 0

3 years ago

you take a group of 20 people going to the movies. kids’ tickets cost $4 each, and adults tickets $6 each. your total cost is $9

brilliants [131]

The number of kids in your group is 12.

Step-by-step explanation:

Given,

Number of people = 20

Cost of each kid ticket = $4

Cost of each adult ticket = $6

Total spent = $96

Let,

x be the number of kids ticket

y be the number of adult ticket

According to given statement;

x+y=20 Eqn 1

4x+6y=96 Eqn 2

Multiplying Eqn 1 by 4

$4(x+y=20)\\4x+4y=80\ \ \ Eqn\ 3$

Subtracting Eqn 3 from Eqn 2

$(4x+6y)-(4x+4y)=96-80\\4x+6y-4x-4y=16\\2y=16$

Dividing both sides by 2

$\frac{2y}{2}=\frac{16}{2}\\y=8$

Putting y=8 in Eqn 1

$x+8=20\\x=20-8\\x=12$

The number of kids in your group is 12.

Keywords: linear equation, elimination method

Learn more about elimination method at:

#LearnwithBrainly

5 0

3 years ago

I NEED HELP ASAP!!!!!

crimeas [40]

Answer:

Skewed to the right

Step-by-step explanation:

i bet your in 6 or 7 grade

8 0

3 years ago

Read 2 more answers

I need help with this ... I don't get it

Ahat [919]

1. The volume is comprise of a cube and prism

V = ( x + 2) ( 2x + 4) + ( x + 2)^2

Solve for x

X = 10.12

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1050 = (2x – 4) 15x

1050 = 30x^2 – 60x

Solve for x

X = 7

3. 148 = ( x – 5) ( x – 6 ) ( x – 4)

Solve for x

X = 10.35

4. 144pi = pix^2(21)

X = 2.62

4 0

3 years ago