Dox needs to solve the system of equations below 4x + 5y = 7
2x - 3y = 9

He decides to use the elimination method to cancel out the x terms in order to first solve for y. Dox uses the following steps:

Step 1: 4x + 5y = 7
-2(2x) - 3y = 9

Step 2: 4x + 5y = 7
-4x - 3y = 9

Step 3: 2y = 16

Step 4: y = 8
Did Dox use the correct steps to solve for y?

395.84

step-by-step explanation:

2πrh+2πr²

2 (pie)(radius)(height)+2(pie)(radius)^2

maximum area = xy = (16)(32) = 512 ft2

to maximize the area of the garden, the side of the fence parallel to the side of the house should be 32 ft long, and the other two sides should both have length 16 ft.'

source

$3720

step-by-step explanation:

taxable income = $31000

as per the 2018-2019 us tax bracket, the tax rate is 12% for an individual whose taxable income is between $9,526 to $38,700.

so, the tax to be paid by him = 12% of 31000

= 0.12 * 31000     [12% converted to decimal as 0.12]

= $3720