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3 years ago

8

Jose Luis desea colocar una línea de azulejos alrededor de toda la piscina de su casa. La piscina tiene forma rectangular con un

ancho de 10 m y una longitud de 25 m. , ¿cuántos metros lineales de azulejos necesitará comprar?

1 answer:

poizon [28]3 years ago

7 0

Answer:

70

Step-by-step explanation:

2 x (25 + 10) = 2 x 35 = 70

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A(r) is a function that gives the area of a circle with radius r. It can be written in equation form as A(r) = 3.14r2. What is t

Jobisdone [24]

B: 78.50

If you plug in 5 for r, then you get 3.14 * 25, which is equal to 78.5

Hope this helps!

3 0

3 years ago

Pls help. Evaluate the expression 3.14(a2 + ab) when a = 3 and b = 4. (Input decimals only, such as 12.71, as the answer.)

givi [52]

3.14(3(2) + 3(4))
3.14( 6 + 12)
3.14(18)
=56.52

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3 years ago

Someone please help me with this !!!

a_sh-v [17]

Answer:

what does it say young buck

6 0

2 years ago

Which fraction is equivalent to 1/2?

zhannawk [14.2K]

It would be 2/4. 2/4 simplifies to 1/2.

6 0

3 years ago

Read 2 more answers

How do u factor this

PilotLPTM [1.2K]

You can factor a parabola by finding its roots: if

$p(x)=x^2+bx+c$

has roots $x_1,\ x_2$ , then you have the following factorization:

$p(x) = (x-x_1)(x-x_2)$

In order to find the roots, you can use the usual formula

$x_{1,2} = \dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

In the first example, this formula leads to

$x_{1,2} = \dfrac{-2\pm\sqrt{4+4}}{2} = \dfrac{-2\pm\sqrt{8}}{2} = \dfrac{-2\pm2\sqrt{2}}{2} = 1 \pm \sqrt{2}$

So, you can factor

$x^2-2x-1 = (x-1-\sqrt{2})(x-1+\sqrt{2})$

The same goes for the second parabola.

As for the third exercise, simply plug the values asking

$f(1.5)=-5.25$

you get

$f(-1.5) = 1.5c-3 = -5.25$

Add 3 to both sides:

$1.5c = -2.25$

Divide both sides by 1.5:

$c = 1.5$

7 0

3 years ago