Answer:
BdB = 68.10 decibels
Step-by-step explanation:
BdB = 10 log10 I / Io
where BdB is the sound intensity level in decibels, I is the sound intensity on the linear scale (W / m²) and I0 is the hearing threshold (10^-12 W / m²).
Converting Io de 10^-12 W/m² to W/in², tenemos
10^-12 W/m² = 1.5500031000062x10^-9 W/in²
So, applying the equation or formula,
BdB = 10 log10 (10 ^ -2 W/in² / 1.5500031000062x10^-9 W/in²
)
BdB = 10 log10 (0.64516x10^6)
BdB = 10 log10 (6,451,600)
Being log10 (6,451,600) = 6.8096674332398761189214526331036, then
BdB = 10 x 6.8096674332398761189214526331036
BdB = 68.096674332398761189214526331036
BdB = 68.10 decibels
Answer:
y > 1/2x - 1
First, draw the dashed line y = 1/2x - 1 (slope intercept ; y = mx + b).
Start at -1 on the y-axis, and continue going 2 units to the right, and 1 unit up for the right side of the graph.
Then starting at -1 on the y-axis, continue going 2 units to the left, and 1 unit down for the left side of the graph.
Explanation:
Convert standard form (Ax + By = C) by isolating y from the rest of the equation.
Ax + By = C → y = -Ax/B + C/B → y = mx + b.
Given a standard form equation in inequality form,
x - 2y < 2.
Set it to slope-intercept as an inequality to find the slope and y-intercept.
When negating (making opposite) a variable, you flip the inequality.
x - 2y < 2 → x - 2y - x < 2 - x → -2y < -x + 2 → 2y > x - 2 → <u>y > 1/2x - 1</u><u>.</u>
To calculate the diameter of a circle, multiply the radius by two.