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Tamiku [17]
3 years ago
5

Please help me with this

Mathematics
2 answers:
Westkost [7]3 years ago
8 0

Hi!

So the slope formula is y = mx + b.

m is the slope

b is the y intercept

so in this case, -1/2 is m which is the slope

and 7 is b which is the y intercept


Hope this helps!!

emmasim [6.3K]3 years ago
5 0
The equation is put in slope intercept form which is y=mx+b

The slope is m and in this case it is -1/2.
To find the y intercept substitute in 0
for x then solve.
y =   - \frac{ 1}{2} (0) + 7
y = 7


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If f(x) = -3x-5 and g(x)=4x-2, find (f-g)(x)
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f(x) -g(x) = -3x-5 -(4x-2)

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KATRIN_1 [288]

Answer:

169.04 in² (nearest hundredth)

Step-by-step explanation:

Surface area of a cone = \pir² + \pirl

(where r = radius of the base and l = slant height)

Given slant height l = 10 and surface area = 188.5

Surface area  = \pir² + \pirl

188.5 = \pir² + 10\pir

\pir² + 10\pir - 188.5 = 0

r = \frac{-10\pi +\sqrt{(10\pi )^2-(4\times\pi \times-188.5)} }{2\pi } = 4.219621117...

Volume of a cone = (1/3)\pir²h

(where r = radius of the base and h = height)

We need to find an expression for h in terms of l using Pythagoras' Theorem a² + b² = c², where a = radius, b = height and c = slant height

r² + h² = l²

h² = l² - r²

h = √(l² - r²)

Therefore, substituting found expression for h:

volume of a cone = (1/3)\pir²√(l² - r²)

Given slant height l = 10 and r = 4.219621117...

volume = 169.0431969... = 169.04 in² (nearest hundredth)

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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