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4 years ago

Homework help! Pls answer the question below | | | v

Mathematics

2 answers:

pantera1 [17]4 years ago

8 0

Answer:

Step-by-step explanation:

see image linked below

kykrilka [37]4 years ago

4 0

Answer:

Step-by-step explanation:

A fun way of solving it is by turning your image 90 degrees, and observing the original figure. You can also solve it by checking the points.

(I am sorry if this wasn't very good.)

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Y+1 y+8 y+2 y+7

kipiarov [429]

$\dfrac{y+1}{y+2}+\dfrac{y+8}{y+9}=\dfrac{y+2}{y+3}+\dfrac{y+7}{y+8}$

Write all fractions in terms of a common denominator:

$\dfrac{y+1}{y+2}=\dfrac{(y+1)(y+9)(y+3)(y+8)}{(y+2)(y+9)(y+3)(y+8)}$

$\dfrac{y+8}{y+9}=\dfrac{(y+8)^2(y+2)(y+3)}{(y+2)(y+9)(y+3)(y+8)}$

$\dfrac{y+2}{y+3}=\dfrac{(y+2)^2(y+9)(y+8)}{(y+2)(y+9)(y+3)(y+8)}$

$\dfrac{y+7}{y+8}=\dfrac{(y+7)(y+2)(y+9)(y+3)}{(y+2)(y+9)(y+3)(y+8)}$

Then move all fractions to one side and simplify the numerator:

$\dfrac{(y+1)(y+9)(y+3)(y+8)+(y+8)^2(y+2)(y+3)-(y+2)^2(y+9)(y+8)-(y+7)(y+2)(y+9)(y+3)}{(y+2)(y+9)(y+3)(y+8)}=0$

The numerator dictates when the fraction reduces to 0. The denominator can never be 0, so we know that <em>y</em> cannot take any of the values -2, -9, -3, nor -8.

So the equation reduces to

$(y+1)(y+9)(y+3)(y+8)+(y+8)^2(y+2)(y+3)-(y+2)^2(y+9)(y+8)-(y+7)(y+2)(y+9)(y+3)=0$

Expand the left side; you would end up with

$-6(2y+11)=0$

$2y+11=0$

$2y=-11$

$\implies\boxed{y=-\dfrac{11}2}$

8 0

3 years ago

Calculala circunferencia de un círculo que tiene un radio de 6.2 cm

Agata [3.3K]

Hola!

$C = 2 \pi r$

C es circunferencia
r es radio

$C = 2* \pi *6.2$

$\pi = 3.14$

$C = 2 * 3.14 * 6.2 = 38.94$

La respuesta es 38.94

7 0

3 years ago

Rationalize the expression and simplify. <br><br> <img src="https://tex.z-dn.net/?f=%5Cfrac%7B%5Csqrt%7B4%2Bh%7D-2%20%7D%7Bh%7D"

MAXImum [283]

You multiply by the conjugate to both the denominator and numerator.
After that you can simplify by canceling the 4 and then you are able to simplify the (h) as well.