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
ValentinkaMS [17]
3 years ago
8

How do I solve this problem? You drive your car on a cold day (20^oF Outside) the engine overheats to about (220^oF). When you p

ark the car the engine begins to cool down. The Temperature T of the engine t minutes after you park satisfies the equation:
ln (T-20/200) = - 0.11t

(a) solve the equation for T

T=

(b) Use part of (a) to find the temperature of the engine after 20 min ( t = 20). Round the answer to 1 decimal place

T=______o F
Mathematics
1 answer:
GaryK [48]3 years ago
7 0
ln(T- \frac{20}{200})=-0.11t \\ e^{ln(T- \frac{20}{200})}=e^{-0.11t} \\ T- \frac{20}{200} =e^{-0.11t} \\ T-0.1=e^{-0.11t} \\ T=e^{-0.11t}+0.1
Then, now that we have solved for T, we can evaluate and solve for t=20 minutes.
T=e^{-0.11t}+0.1 \\ T=e^{-0.11*20}+0.1 \\ T=e^{-2.2}+0.1 \\ T=0.11+0.1 \\ T=0.21
You might be interested in
A restaurant offers four sizes of pizza, two types of crust, and eight toppings. How many possible types of pizza with one toppi
valentina_108 [34]

Answer:

4

Step-by-step explanation:

3 0
3 years ago
Question 7(Multiple Choice Worth 1 points) (08.02 LC) Eva conducted a survey to find out the amount of time high schoolers spend
Lady bird [3.3K]

Answer:

The answer is "Option B".

Step-by-step explanation:

The difference between most time and also the least spending time on Internet surfing is 3 hours. Since we do not have charts for tables etc., only 3 can be used we need. A range is defined as the difference between the largest and the smallest amounts. The range between both the largest as well as the smallest is unique. In this reply, it tells us that the gap between most time and the fewer hours invested surfing the web is 3 hours.

  • In option A, it is wrong since the range has nothing to do with formulas. (Of course, the dividend with a divisor results in a quotient). Only subtraction and not division may be achieved.
  • In option C, when all surf for exactly one hour, it could take the largest time of 3 hours and 3 hours, the last time. Add it into the equation and the range of the data present would've been 0.
  • In option D, It is erroneous even as the range is not the mean, and the mean seems to be the average. We search for both the range, not the mean.

3 0
2 years ago
Examine these points on line u and line v. Line u: (9, –8), (5, 4) Line v: (4, 2), (7, –7) How many points of intersection are t
musickatia [10]

Answer:

The line u and line v have no point of intersection because they are parallel lines

Step-by-step explanation:

The slope of a straight line is given as follows;

Slope, \, m =\dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}

The slope of line u is (4 - (-8))/(5 - 9) = -3

The equation for line u is y - 4 = -3*(x - 5)

y = -3·x + 15 + 4 = 19 - 3·x

The slope for line v is (-7 - 2)/(7 - 4) = -3

The equation for the line v is y - 2 = -3*(x - 4)

∴ y = -3x + 12 + 2 = -3x + 14

y = 14 - 3·x

Therefore. line u and line v have the same slope and are therefore parallel and they do not intersect

6 0
3 years ago
HELP!!! DUE IN AN HOUR!!
Ulleksa [173]

Answer:

measure 3 equals 121 degrees

Step-by-step explanation:

Measure 2 and 3 make a 180 angle and you subtract 59 from 180 and you get 121.

5 0
3 years ago
If you join all the vertices of a heptagon how many quadrilaterals will you get?
mafiozo [28]
The answer is 6. because a hexagon has 6 sidea
4 0
3 years ago
Other questions:
  • Simplify the expression 3(-3y+2x)<br> combine like terms a+3a-b+4b+c
    10·1 answer
  • Which of the following quotients are negative? Check all that apply. 1: 2.2 ÷ 9.5 2:–0.5 ÷ 0.021 3: –1.3 ÷ –54.321 0.4 ÷ –0.4 4:
    13·2 answers
  • kelly wants to enclose a rectangular area for her dog with 240 feet of fencing.she wants the width to be 20 feet. what will be t
    6·1 answer
  • The angle, γ, is the same between the z components of both the position vector and the tensile force. The first step in solving
    15·1 answer
  • The sun’s rays are striking the ground at a 55° angle, and the length of the shadow of a tree is 56 feet. How tall is the tree?
    13·1 answer
  • KEVIN BOUGHT 3 POUNDS OF TRI-TIP FROM B STREET BUTCHERS FOR $29.97 AND ARNOLD BOUGHT 4 POUNDS OF TRI-TIP FROM MEL"S MEAT MARKET
    14·1 answer
  • 4) Find the center and radius of the circle.<br>x2+ y2 – 81 – 2y=-16​
    14·1 answer
  • For the following geometric sequence find the recursive formula.
    10·1 answer
  • Does anyone know how to do this I’ve been trying for hours and I can’t find anything to help me?
    12·1 answer
  • What is the 95% confidence interval of E(Y) at X = 4?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!