Score: 0.5 of 1 pt 11 of 12 (12 complete)
x CA-1.5.51
High concentrations of carbon monoxide CO can cause coma and possible death. The time required for a person to reach a COHb le
model T = .0002x2 - 316x + 127.9, where T is the exposure time in hours necessary to reach this level and 500 sxs 800 is the amou
a) What is the exposure time when x = 760?
b) Estimate the concentration of CO necessary to produce a coma in 8 hr.
What is the exposure time when x = 760?
3.3 hr
(Round to the nearest tenth as needed.)
Estimate the approximate concentration of CO necessary to produce a coma in 8 hr.
ppm
(Round to the nearest tenth as needed.)

your answer is 228

step-by-step explanation:

add the top and bottom bases together, then divide them by 2, then multiply by the height.

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

4

step-by-step explanation:

im pretty sure it's 4 beacsue 8/2 equals 4