Find 3/4 of the height: Height = 10 inches 3/4 of the height = 3/4 x 10 = 7.5 inches Find the amount of water she should fill: Volume = πr²h Volume = π(4)²(7.5) = 377.14 in³ Mary should pour in 377.14 in³ of water.

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is:

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1