Write the following numbers in order from smallest value to largest value: 1.75, 1. Justify your answer. 4. If 2x2 – x + 6 is subtracted from x2 + 3x – 2, ...

Step-by-step explanation:

1. Which number is irrational?

(A) (B) (C) 0.3333 (D)

2. In which group are the numbers arranged in order from smallest value to largest value?

(A) π, 3.14, (B) 3.14, π

3. Write the following numbers in order from smallest value to largest value:

1.75, 1

Justify your answer.

4. If 2x2 – x + 6 is subtracted from x2 + 3x – 2, the result is

(A) x2 + 2x – 8 (B) x2 – 4x + 8 (C) –x

2 + 2x – 8 (D) –x

2 + 4x – 8

7 0

1 year ago

A local am radio station broadcasts at a frequency of 764 khz. calculate the energy of the frequency at which it is broadcasting

pentagon [3]

The frequency of the emitted radio waves is:
$f=764 kHz = 7.64 \cdot 10^5 Hz$

The energy of a photon is given by:
$E=hf$
where h is the Planck constant and f is the photon frequency. Using the frequency given by the problem, we can find the energy of each photon of this radiation:
$E=hf=(6.6 \cdot 10^{-34} Js)(7.64 \cdot 10^5 Hz)=5.04 \cdot 10^{-28} J=5.04 \cdot 10^{-31} kJ$

7 0

3 years ago