1 year ago

HELP PLEASE!! ASAP, Find the surface area of the sphere. Round your answer to the nearest hundredth.

Mathematics

1 answer:

k0ka [10]1 year ago

4 0

Answer:

201.06

Step-by-step explanation:

A=4πr2 is the equation (r being radius)

4·π·(4)2≈201.06193

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AB and BC form a right angle at point B. If A = (-3,-1) and B = (4,4), what is the equation of BC

m_a_m_a [10]

Answer:

$y=-1.4x+9.6$

Step-by-step explanation:

If A = (-3,-1) and B = (4,4), the slope of AB is

$\text{Slope}_{AB}=\dfrac{-1-4}{-3-4}=\dfrac{-5}{-7}=\dfrac{5}{7}$

Two perpendicular lines have slopes that have product of -1:

$\text{Slopee}_{AB}\cdot \text{Slope}_{BC}=-1\\ \\\dfrac{5}{7}\cdot \text{Slope}_{BC}=-1\\ \\\text{Slope}_{BC}=-\dfrac{7}{5}=-1.4$

The equation of the line BC with slope -1.4 and passing through the point B(4,4) is

$y-4=-1.4(x-4)\\ \\y-4=-1.4x+5.6\\ \\y=-1.4x+9.6$

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3 years ago

Factor the trinomial.<br><br> x2 + x − 2

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Step-by-step explanation:

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2 years ago

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I think it A but I’m not 100% sure

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3 years ago

Which number line shows the solution set for the inequality -4x+7>15

Ira Lisetskai [31]

First, let's simplify the inequality as much as we can:

-4x + 7 > 15
-4x > 8

Divide by -4:
x < -2

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2 years ago

I just need help with the numbers in blue! Thx:)

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6.) Numeric coefficient: 4

Number of terms: 4

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Number of terms: 3

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Exponents: ⁴ and ²

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Exponents: ², ⁶, ⁹, ², ¹²

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2 years ago