Perform the required calculations for each of the following items. Round your answers to the nearest 0.1% 1. 20 is how much less than 30? What percent less?
2. 25 is how much more than 20 what more?
3. 37 is what percent more than 32?
4.300 is what percent less than 599?
5. 184 is what percent more than 148?
6. 102 is what percent more than 50?
7. 16 is what percent less than 489?
8. 216 is what percent greater than 80?
9.418 is what percent smaller than 516?

the correct answer is 1: 2

step-by-step explanation:

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5x + 3y = - 4

step-by-step explanation:

the equation of a line in standard form is

ax + by = c ( a is a positive integer and b, c are integers )

express the line first of all in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (7, - 3) and (x₂, y₂ ) = (4, - 8)

m = = -

y = - x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (4, - 8 ), then

- 8 = - + c ⇒ c = -

y = - x - ← in slope-intercept form

multiply all terms by 3 to eliminate the fractions

3y = - 5x - 4 ( add 5x to both sides )

5x + 3y = - 4 ← in standard form

2425

step-by-step explanation: