1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
IrinaVladis [17]
3 years ago
8

High concentrations of carbon monoxide CO can cause coma and possible death. The time required for a person to reach a COHb leve

l capable of causing a coma can be approximated by the quadratic model T=.0002x^2−.316x+127.9, where T is the exposure time in hours necessary to reach this level and 500≤ x ≤800 is the amount of carbon monoxide present in the air in parts per million? (ppm).
A) What is the exposure time when x= 600? _____hr
B) Estimate the concentration of CO necessary to produce a coma in 9 hr.
Mathematics
1 answer:
ale4655 [162]3 years ago
5 0

Answer:

A) 10.38hours

B) 617.95 is the concerntration of CO

Step-by-step explanation:

A) when x=600

T= 0.0002x^2 - 0.316x + 127.9

T= 0.0002(600)^2 -0.316(600) + 127.9

T= 10.38secs

B) to find the concerntration, use Almighty formular

X=-b+-sqrt(b^2-4ac)/2a

0.0002x^2-0.316x-127.9=9

0.0002x^2 - 0.316x + 118.9=0

X= 0.316 +- sqrt(0.316^2) -4(0.0002×118.9)/(2×0.0002)

X= 0.316+(0.68817/0.0004)=962.05 or

X=-0.316 -0.68817/0.0004 =617.95

Therefore X is within the domain of 617.95 is the concerntration

You might be interested in
The perimeter of a rectangle is twice the
Shkiper50 [21]

Answer:

L=16 W=7

Step-by-step explanation:

P=2(L+W)

L=2W+2

46=2(2W+2)+2W

(((7×2)+2)=16×2=32

(16-2)/2=7×2=14

32+14=46 or 16+16+7+7=46

3 0
3 years ago
Lol we need the answer (-:
PolarNik [594]

Answer:184ft²

Step-by-step explanation:2(5×10)+2(4×6/2)+(6×10)

100+24+60=184

PLEASE MARK ME AS BRAINLIEST!!!

6 0
2 years ago
The measure of an angle is 6° less than the measure of its complement.
kogti [31]
It’s 3 less then measure of its complement 6°
7 0
3 years ago
Which of the following represents a relation that is NOT a function? A. X 7 -5 10 -7 Y 34 32 40 34 B. X -7 -5 -7 2 Y 34 32 40 34
Nostrana [21]
The x-value of -7 shows up more than once in relation ...
  B. X -7 -5 -7 2 Y 34 32 40 34

_____
When there is more than one y-value for an x-value, the relation is NOT a function.
8 0
3 years ago
Jesse surveyed 3/4 of the students at her school. Of those surveyed, 2/3 participate in school club or sports team. According to
OLga [1]
3/4 * 2/3 = > 6/12 ; Then you simplify it and the answer will be 1/2. Therefore the fraction of the students who participated in a school club/sports team is 1/2.
8 0
3 years ago
Read 2 more answers
Other questions:
  • If the coefficient of determination for a data set is 0.75 and the SSE for the data set is 13, what is the SST for the data set?
    9·2 answers
  • What is 8 raised to the -2/3 power? I need help
    5·1 answer
  • Write the number 3.7 as a mixed number let x
    11·1 answer
  • The human body generates about 400 BTUs of body heat per hour while active. If an office that is 18 ft × 38 ft × 12 ft has 12 wo
    12·1 answer
  • A math problem asks when two brothers will have saved the same amount of money. When Marta writes and solves the equation, her f
    6·1 answer
  • What is the value of (4^3)(4^-1)(5^-2)/(4^4)(5^-3)(5^0)
    8·1 answer
  • Solve for x.<br> Can anyone help me please?
    11·1 answer
  • Solve a/-1.2 = -0.4. <br><br> a=?
    10·1 answer
  • Please find the answer yo 749/d * d/749 = 1
    11·1 answer
  • What is 1 over 4 as a percent​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!