Factor the expression below.

Mathematics

1 answer:

Leni [432]3 years ago

8 0

Answer: B

Step-by-step explanation:

When you factor an expression, you want to take out a factor of the numbers and variables.

Since this expression is a bit hard to factor as itself, we can FOIL the answers to see the correct expressions.

(4x-5)(4x-5)

16x²-20x-20x+25

16x²-40x+25

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A satellite in a circular orbit 1250 kilometers above Earth makes one complete revolution every 110 minutes. What is its linear

Ivenika [448]

Answer:

$\large \boxed{\text{approximately 435.7 km/min}}$

Step-by-step explanation:

1. Angular speed

The angular speed ω is the angle θ swept out by the satellite in a given time t.

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The formula for the linear speed v is

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$\begin{array}{rcl}v & = & r\omega\\& = & \text{7268 km} \times \dfrac{2\pi}{\text{110 min}}\\\\& \approx & \textbf{435.7 km/min}\\\end{array}\\\text{The linear speed of the satellite is $\large \boxed{\textbf{approximately 435.7 km/min}}$}$