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3 years ago

6

Draw and explain a model of the equation 3x=18.

1 answer:

nirvana33 [79]3 years ago

4 0

Para que de 18 es la respuesta porque3×6 es 18

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Tell me the answer of these question.

Nonamiya [84]

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4 years ago

Find the perimeter of an isosceles triangle. base edge = 23cm and vertex angle = 42°

Wittaler [7]

I think answer should be 20 I think I’m not 100 percent sure so please give me brainlest let me know if it’s correct or not okay thanks bye bye

3 0

3 years ago

What are the focus and directrix of the parabola that is the graph of the function f(x)=x²?

Hitman42 [59]

Answer:

Step-by-step explanation:

Given

$y=x^2$

comparing it with standard equation $x^2=4ay$

so 4a=1

$a=\frac{1}{4}$

so Focus of parabola is (0,0)

directrix

y=-a

here $a=\frac{1}{4}$

$y=-\frac{1}{4}$

5 0

4 years ago

Rectangle divided into four rectangles. The perimeters of rectangle #1, #2, #3, #4 are 10 cm, 20 cm, 28 cm and 18 cm respectivel

notsponge [240]

Answer:

Perimeter of big rectangle = 38 units

Step-by-step explanation:

Let the sides of rectangle (1) = a and c cm

Sides of rectangle (2) = b and c cm

Sides of rectangle (3) = b and d cm

Sides of rectangle (4) = a and d cm

Perimeter of (1) = 2(length + width)

2(a + c) = 10

a + c = 5 ---------(1)

Perimeter of (2) = 2(b + c)

2(b + c) = 20

b + c = 10 -------(2)

Perimeter of (3) =2(b + d)

2(b + d) = 28

b + d = 14 --------(3)

Perimeter of (4) = 2(a + d)

2(a + d) = 18

a + d = 9 -------(4)

Since perimeter of the big rectangle = 2(a + b + c + d)

By adding equations (1) + (2) + (3) + (4),

(a + c) + (b + c) + (b + d) + (a + d) = 5 + 10 + 14 + 9

2(a + b + c + d) = 38

Therefore, perimeter of the rectangle ABCD = 38 units

7 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Csqrt%7B9x%5E2" id="TexFormula1" title="\sqrt{9x^2" alt="\sqrt{9x^2" align="absmiddle" class

yulyashka [42]

Answer:

3x

Step-by-step explanation:

$\sqrt{9 {x}^{2} }$

$\sqrt{9} \sqrt{ {x}^{2} }$

$\sqrt{ {3}^{2} } \sqrt{ {x}^{2} }$

$\sqrt{ {3}^{2} } x$

$= 3x$

3 0

3 years ago