Solving for y then put the equation in slope-intercept form.Find the slope, and the x and y intercepts.

Mathematics

1 answer:

olchik [2.2K]3 years ago

7 0

Answer:

y intercept is 3.5 the slope is 2 and I'm not sure how to calculate x intercept

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Oksana_A [137]

Answer:

a) Change in area = 0.72π m²

b) Estimated change in %age = 2%

Step-by-step explanation:

$Initial\,\, radius = r = 6 m\\\\Final \,\,radius = r_1 = 6.06 m\\\\Change\,\, in\,\,radius = dr =6.06 - 6 = .06 m\\\\$

$Area\,\,of\,\,circle= A=\pi r^2\\\\A=36\pi \,m^2\\\\Chang\,\, in\,\, area = dA= 2\pi r.dr\\\\dA=2\pi(6)(.06)\\\\dA=0.72\pi\,m^2\\\\Estimated\,\, \%age\,\, change=\frac{0.72\pi}{36\pi}\times 100\%\\\\=2\%$

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Ann [662]

$\frac{x^2-25}{x^2-2x}\times \frac{x-2}{x^2+5x}$

Let's factor all four of these before we multiply.

x² - 25
We want two numbers that add to -25 and multiply to 0.
= (x+5)(x-5)

x² - 2x
Both terms are divisible by x.
= x(x-2)

x - 2
unfactorable

x² + 5x
Both terms are divisible by x.
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Now we have this:

$\frac{(x+5)(x-5)}{x(x-2)}\times \frac{x-2}{x(x+5)}$

Let's go ahead and multiply across.

$\frac{(x+5)(x-5)(x-2)}{x(x-2)x(x+5)}$

Cancel out the (x+5) and (x-2) from the top and the bottom.

$\boxed{\frac{x-5}{x^2}}$

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This would be 16

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Answer:

Step-by-step explanation:

if it takes her 2/3 a minute then

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