a dump truck weighs 11.25 tons. a conveyor belt pours sand into the truck at a constant rate of 1/4 ton per minute. the dump truck weighs 18 tons when filled. at the same time the dump truck is being filled, an identical truck filled to capacity is being emptied at a rate of 1/8 ton per minute. how much sand is in each dump truck when the trucks are the same weight?

Answers

Answer 1
We know these variables:

W1B = Weight of the truck 1 before starting the filling.
W1A = Weight of the truck 1 when filled.
R1F =  Rate of change (Truck 1 being filled)

W2B = Weight of the truck 2 before starting the filling.
W2A = Weight of the truck 2 when filled.
R2F =  Rate of change (Truck 2 being filled)

Given that a conveyor belt pours sand into the truck and stops when filled, then the amount of sand, when the truck is filled to capacity, is:

[tex]S = W_{1B} - W_{1A} = 18-11.25 = 6.75Tons[/tex]

Let's analyze Truck 1:

Given that the rate of change is:

[tex] \frac{1}{4} ton/min[/tex] 

This means that in 1min the amount of sound poured is 1/4Ton, then the time elapsed when filled using rule of three is:

[tex]t = \frac{6.75}{ \frac{1}{4} } = 27min[/tex]

A similar analysis happens with Truck 2: 

Given that the rate of change is:

[tex] \frac{1}{8} ton/min[/tex] 

Then:

[tex]t = \frac{6.75}{ \frac{1}{8}} = 54min[/tex]

Now we can find two straight lines:

Truck 1:

[tex]\left \{ {{t=0min} \atop {S=0Ton}} \right. [/tex]

[tex] \left \{ {{t=27min} \atop {S=6,75Ton} \right[/tex]

[tex]S-S_{0} = m(t-t_{0})[/tex]

[tex]S-0 = \frac{6.75-0}{27-0} (t-0)[/tex]

∴ [tex]S = 0.25t[/tex]

Truck 2:

[tex] \left \{ {{t=0min} \atop {S=6.75Ton}} \right[/tex]

[tex] \left \{ {{t=54min} \atop {S=0Ton}} \right[/tex]

[tex]S-S_{0} = m(t-t_{0})[/tex]

[tex]S-6.75 = \frac{6.75-0}{0-54} (t-0)[/tex]

∴ [tex]S = -0.125t+6.75[/tex]

The trucks are the same weight when they have the same amount of sand, so solving for t:

[tex]0.25t = -0.125t+6.75[/tex]
[tex]0.375t = 6.75[/tex]
[tex]t = 18min[/tex]

Finally, the amount of sand in each truck:

[tex]S = 0.25(18) = 4.5Ton [/tex]
Answer 2
Final answer:

To find out how much sand is in each dump truck when they are the same weight, we can set up an equation based on the given information. Let's assume that the amount of sand in the first truck is x tons. We can then find the value of t that makes the weight of both trucks the same and substitute it into the equation to find x.

Explanation:

To find out how much sand is in each dump truck when they are the same weight, we can set up an equation based on the given information.

Let's assume that the amount of sand in the first truck is x tons. Since the conveyor belt pours sand into the truck at a constant rate of 1/4 ton per minute, the weight of the sand will increase by (1/4) * t tons, where t is the time in minutes.

Similarly, the second truck is being emptied at a rate of 1/8 ton per minute. So, the weight of sand in the second truck will decrease by (1/8) * t tons.

We know that the dump truck weighs 11.25 tons initially and 18 tons when filled. Therefore, we can set up the equation:

11.25 + (1/4) * t - (1/8) * t = 18 - x

Simplifying the equation:

(1/4) * t - (1/8) * t = 18 - 11.25 - x

(1/8) * t = 6.75 - x

t = 6.75 * 8 - 8x

Now, we need to find the value of t that makes the weight of both trucks the same. Let's substitute that value into the equation to find x.


Related Questions

How can we check the binomial factors to verify that they are truly factors? Are the factors (x + 5)(x – 8) truly factors of x2 – 2x – 30. Show your work.

Answers

They are not. The easiest way to tell this is by multiplying the last number of each parenthesis together. This should always result in the last number in the equation. However, -8*5 does not equal -30, so these are not the true factors. 
You verify your answer by using the F.O.I.L. method. First Outside Inside Last. This shows that (x+5) & (x-8) is not the correct factors for 2x-2x-30 or x2-2x-30. Either way, the factors are not right for either of those equations. Hope my answer helps you

the cost of 10 yearbooks $250 what is the cost of one yearbook

Answers

$25 per yearbook

The cost is x and the amount is 10
So the equation is 10x=$250
Divide 250 by 10 and get 25
The per-yearbook cost is
   $250/10 = $25

_____
Whether you can actually purchase one yearbook for that price depends on a number of factors.

A math club took a test. Twelve of the members had an average score of 80. Eighteen of the members had an average score of 86.

what was the class average score?

Answers

2508/30=83.6 
hope tis helps

The classes average score is 83%

Form a sequence that has two arithmetic means between -1 and 59.
a.
-1, 29, 29, 59
c.
19, -1, 59, 39
b.
-1, 19, 39, 59
d.
-1, 14, 29, 44, 59

Answers

The formula for solving the problem is as follow:
an = a1 + (n - 1)d
Where:
n = number of figure in the sequence = 4
d = difference between successive number =?
a1 = -1
a4 = 59
Insert the given values into the formula,
59 = -1 + (4 - 1)d
59 = -1 + 3d
59 + 1 = 3d
60 = 3d
d = 60/3 = 20
Therefore, d = 20. This implies that, there is a difference of 20 between successive numbers.
The number sequence is as follow:
-1, 19, 39, 59.

two arithmetic means between -1 and 59.
b.-1, 19, 39, 59

hey can you please help me posted picture of question

Answers

The correct answer for this completion exercise shown above is the second option (Option B), which is: B. Parent

 Therefore, you have:"In each family of function, the parent function is the most basic function in the family"

 By definition, the most basic fucntion in each family of functions is called “parent fucntion”. A family of function is a set of function that when you graph them, you can notice that they have common charateristics.

Simplify the expression. (x1/8 y1/4)2

Answers

Answer:

Step-by-step explanation:

C) x1/4y1/2

Rex painting the garage in the shed he uses 3 gallons of paint on the garage he uses 3/4 of that amount on the shed enter the amount of paint in gallons Rex uses on the shed

Answers

(3/4) of 3 gallons is ...
  0.75×(3 gallons) = 2.25 gallons

Rex uses 2.25 gallons of paint on the shed.

Rex uses 2.25 gallons of paint on the shed, which is [tex]\( \frac{3}{4} \)[/tex] of the 3 gallons of paint he uses on the garage.

To find out how much paint Rex uses on the shed, we need to calculate [tex]\( \frac{3}{4} \)[/tex] of the amount of paint he uses on the garage.

Rex uses 3 gallons of paint on the garage.

Therefore, the amount of paint he uses on the shed is:

Paint used on the shed = [tex]\frac{3}{4} \times 3[/tex]

Calculating this:

Paint used on the shed = [tex]\frac{3 \times 3}{4}[/tex]

= [tex]\frac{9}{4}[/tex]

= 2.25

So, Rex uses 2.25 gallons of paint on the shed.

Which of the following is another way to express the equation 16 = -9 + z?

A.16 = z - 9
B.16 = z + 9
C.16 = -z + 9
D.16 = -z - 9

Answers

D! all you have to do is switch the -9 and the z around! Good Luck!

Answer:

16 = z - 9

Step-by-step explanation:

I did the same problem and answered this, 16 = z - 9. It was correct.

If, in 7 years, Susan will be 2 times as old as she was 3 years ago, what is Susan’s present age? PLEAZE EXPLAIN HOW AND DO IT WITH USING X

Answers

Let Susan's present age be x

Now, after 7 years ( her age will become 7 +x then) she'll be 2 as old she was 3 years ago.

Her age 3 years ago must be x-3

Now according to question,

twice Her age 3 years ago = her age after 7 years

now,

2(x-3) = 7+x
2x-6 = 7+x
2x-x =7+6
x = 13
x = 13



Therefore, her age presenr age is 13 years.

Answer:

Susan is 13 years old.

Step-by-step explanation:

Susan=x

After 7 years she will be 7+x  then she will be 2x as old as she was 3 year ago.

age 3 yrs ago=x-3

2x-6=7+x

if you simplify....

now she is 13

hope it helps!!!!

round 0.246 to the nearest tenth

Answers

.2 is the correct answer to this question

If the racetrack publishes that the odds in favor of a horse winning a race are 5 to 9, what is probability that the horse will not win the race?

Answers

I divided 5 by 9 and multiplied it by 100 to get the percentage for the probability the horse will win. I got 55.55%. I subtracted 55.55 from 100 and got 44.45% chance of not winning the race.

hey can you please help me posted picture of question

Answers

The real part of two complex numbers will be added together and the complex parts will be added together. So the sum will be:

( 6 - 2i) + ( 11 + 6i)

= 6 + 11 - 2i + 6i

= 17 + 4i

So the answer to this question is option D

y equals x + z + 5 Z equals -3 y - 3 2x minus y equals negative 4 How can i solve using 3 variable systems of equation

Answers

To solve a set of linear equations in 3 variables, you need 3 equations. As far as I can tell, you have 2 equations here, so the best you can do is write expressions for 2 of the variables in terms of the third.

If you have
  x +z +5z = -3y -3
  3x -y = -4
Then you can rewrite as
  x = -1.5 -0.6z
  y = -0.5 -1.8z

_____
You can get this by any of the usual methods of solving linear equations. Just treat the system as two equations in x and y with the z terms on the right side of the equal sign:
  x +3y = -3 -6z
  3x -y = -4

Marisol and Mimi walked the same distance from their school to a shopping mall. Marisol walked 2 miles per hour, while Mimi left an hour later and walked 3 miles per hour. If they reached the mall at the same time how far is the mall from their school?

Answers

Let the time in hours after Marisol starts walking be t  and so the time in hours after Mimi starts walking is (t-1)
The distance walked by Marisol=speed*time=2t
Distance walked by Mimi=3(t-1)

When they've reached school they've all walked the same distance so:
3(t-1)=2t
3t-3=2t
3t-2t=3
t=3
Thus the distance from the mall to their school is 2t=2*3=6 miles

What is the perimeter of the rectangle? Write your answer in scientific notation. The area is 2.76 x 10 pw12 the width is 4.6 x 10 pw5 pw is the power

Answers

The caret (^) is the symbol conventionally used to indicate an exponent.

You have
  area = 2.76·10^12
  width = 4.6·10^5

You want to find the perimeter of the rectangle with these dimensions.

The perimeter of a rectangle is twice the sum of length and width.
  perimeter = 2*(length + width)
The length can be figured from the area using the formula for area.
  area = length*width
  area/width = length . . . . . . . . . divide by width
Filling in the numbers, we have
  perimeter = 2*((2.76·10^12)/(4.6·10^5) +(4.6·10^5))
  perimeter = 2*(6.0·10^6 +0.46·10^6)
  perimeter = 2*6.46·10^6 = 1.292·10^7

The perimeter of the rectangle is ...
  1.292·10^7
Final answer:

To calculate the perimeter of a rectangle in scientific notation, divide the given area by the width to find the length, then use the perimeter formula (P = 2×length + 2×width), accounting for the power of 10 in your calculations to maintain proper notation.

Explanation:

The perimeter of a rectangle can be found using the formula P = 2×length + 2×width. Given the area of the rectangle (2.76 x 10^12 square units) and the width (4.6 x 10^5 units), we can find the length by dividing the area by the width. The length would therefore be the area divided by the width which is (2.76 x 10^12) / (4.6 x 10^5) = 6 x 10^6 units. Now that we have the length and width, we can calculate the perimeter by substituting into the formula: P = 2×(6 x 10^6) + 2×(4.6 x 10^5) = 1.2 x 10^7 + 9.2 x 10^5. Converting the width to the same power of 10, we get P = 1.2 x 10^7 + 0.092 x 10^7 = 1.292 x 10^7 units. This expresses the perimeter in scientific notation.

A sample of 4 different calculators is randomly selected from a group containing 13 that are defective and 26 that have no defects. what is the probability that at least one of the calculators is defective? (hint: think complement)

Answers

The probability is 30/46 for one calculator having no defects. When the second one is chosen that will be 29/45, the third 28/44, and lastly the fourth will be 27/43. Multiply all of those together and your will get 0.168. If you are looking at the percentage complement it will be 100% - 16.8% = 83.2% chance of at least one defect.

what is the limit of f (×) as x approaches - infinty

Answers

If the degree of numerator and denominator are equal, then limit will be leading coefficient of numerator divided by the leading coefficient of denominator.

So then the limit would be 3/1 = 3.

Alternatively,

[tex]\displaystyle \lim_{x\to\infty}\dfrac{3x^2+6}{x^2-4}=\displaystyle \lim_{x\to\infty}\dfrac{3x^2+6}{x^2-4}\cdot\dfrac{1/x^2}{1/x^2}=\lim_{x\to\infty}\dfrac{3+\frac6{x^2}}{1-\frac4{x^2}} = \dfrac{3+0}{1-0}=\boxed{3}[/tex]

Hope this helps.

Final answer:

The limit of a function as x approaches negative infinity is the value that the function f(x) approaches as x becomes very large in the negative direction. For example, the limit of 1/x is 0 as x approaches negative infinity, while the limit of 1/x² approaches positive infinity. Functions that oscillate, like sin(\u03C0/x), do not have a limit at infinity.

Explanation:

When discussing the limit of a function f(x) as x approaches negative infinity, we are essentially asking what value f(x) gets closer to as x becomes very large and negative. For instance, consider the function 1/x. As x approaches negative infinity, 1/x gets closer to 0, and we say that the limit of 1/x as x approaches negative infinity is 0. Similarly, for a function like 1/x² which "blows up" or increases rapidly as x approaches 0 from either side, we notice that as x approaches negative infinity, the function approaches positive infinity since the squared term always results in a positive number.

However, not all functions have limits at infinity. For functions that oscillate, such as sin(\u03C0/x), as x approaches 0, it oscillates indefinitely between -1 and +1 and does not approach a specific value.

The formal definition of a limit at infinity states: If there is a number L such that f(x) gets arbitrarily close to L when x is sufficiently large (positively or negatively), we write lim f(x) = L as x → -∞.

Find the value of x for which m//n
A.
31
B.
33
C.
39
D.
41

Answers

In order to be fulfilled m // n we must take into account the following angle:
 180-105 = 75 degrees
 Therefore, we match this angle to the given expression.
 We have then:
 3x-18 = 75
 Clearing x we have:
 3x = 75 + 18
 x = 93/3
 x = 31 degrees
 Answer:
 
the value of x is:
 
A.
 
31
The value of x to make m and n parallel is A.31

What shape is the graph of the equation below? (x-5)^2/4^2 + y^2/7^2=1 A. A line B. A circle C. A parabola opening to the right D. A hyperbola opening to the right and left E. A hyperbola opening up and down F. An ellipse

Answers

the answer to your question

is the letter  C

Let's explore the equation to see why the graph of the formula that is given sounds like:

((x−5)²/(4)²) + (y²/(7)²) = 1

This equation represents the standard form of an ellipse:

((x−h)²/a²) + ((y-k)²/(b)²) = 1

Where:

*The ellipse's center is (h,k).

*The semi-major axis's length, or horizontal radius, is denoted by a.

*The semi-minor axis's length, or vertical radius, is b.

Comparing the given equation to the standard form, we see that:

*h=5 (center is at x=5)

*a=4 (semi-major axis length)

*b=7 (semi-minor axis length)

Since both a and b are positive and the denominators of both terms are squared, the graph represents an ellipse. Therefore, the correct answer is F. An ellipse.

The given equation is in the form of an ellipse:

((x−5)²/(4)²) + (y²/(7)²) = 1

It matches the standard form of an ellipse equation:

((x−h)²/a²) + ((y-k)²/(b)²) = 1

where (h,k) is the center of the ellipse, and a and b are the lengths of the semi-major and semi-minor axes, respectively.

In this equation, h=5, a=4, and b=7, indicating the ellipse is centered at (5,0) with a horizontal radius of 4 and a vertical radius of 7.

Therefore, the correct answer is F. An ellipse.

Complete Question:

What shape is the graph of the equation below?

A. A line

B. A circle

C. A parabola opening to the right

D. A hyperbola opening to the right and left

E. A hyperbola opening up and down

F. An ellipse

Enter a recursive rule for the geometric sequence. 4, −16, 64, −256, ...

Answers

Answer:

The recursive rule is an = (-4) · an-1

Step-by-step explanation:

* Lets explain recursive formula for a geometric sequence:

1. Determine if the sequence is geometric (Do you multiply, or divide, the same amount from one term to the next?)

2. Find the common ratio. (The number you multiply or divide.)

3. Create a recursive formula by stating the first term, and then stating the formula to be the common ratio times the previous term.

# a1 = first term;

# an= r • an-1

- Where:

 a1 = the first term in the sequence

 an = the nth term in the sequence

 an-1 = the term before the nth term  

 n = the term number

 r = the common ratio

Ex: {3, 6, 12, 24, 48, 96, ...}

first term = 3, common ratio = 2

The recursive formula  an = 2 · an-1

* In our problem:

- a1 = 4

- r = -16/4 = -4

- The recursive rule is

# an = (-4) · an-1

Answer:

here is the correct answer.

Step-by-step explanation:

If i = −1 and a and b are non-zero real numbers, what is 1a+bi ?

Answers

The i you normally think of (the one = to sqrt(-1) is not the same i they are using here. They are using this i the same way you would use x = - 1 in any normal equation or relation.

1a + b(-1)
a - b is your answer <<<< answer

a student has test scores of 92%, 87%, and 78%. what must she need to score on thenlast test to maintain 80% or better?

Answers

We'll solve this equation in order to find the score of the 4th test, which we denote with x. [tex] \frac{92+87+78+x}{4}=80 [/tex]. Solving it we find that x=63. And it is the final answer for this problem.

What are the dimensions of the image at fraction 1 over 2 times its current size?

Length = 4 inches, width = 5 inches
Length = 6 inches, width = 8 inches
Length = 10 inches, width = 12 inches
Length = 16 inches, width = 20 inches

Answers

length= 4 inches, width= 5 inches

Answer:

Length = 4 inches, width = 5 inches

Step-by-step explanation:

You save three-fifths of your paycheck. Which decimal is equivalent to that fraction?

Answers

Answer: 0.6

Step-by-step explanation:

The fractions have the form shown below:

[tex]\frac{a}{b}[/tex]

Where: a is the numerator and b is the denominator.

To convert a fraction to a decimal number, you must divide the numerator by the denominator.

You know that the fraction is three-fifths, which is written as following:

[tex]\frac{3}{5}[/tex]

Therefore, when you divide the numerator 3 by the denominator 5, you obtain the following decimal number which is equivalent to that fraction:

 [tex]\frac{3}{5}=0.6[/tex]

Answer:

0.6

Step-by-step explanation:

Michelle collects US, Canadian and Mexican stamps. In her collection 80% of the stamps are U.S. and Mexican stamps. there are 3 times as many U.S. stamps as Mexican stamps. WHat percent of Michelle's collections is made up of U.S. stamps?

Answers

We know that 80% of the stamps are US and Mexican. 
The US stamps are 3 times the Mexican stamps. That means that of the 80%, Mexicans comprised of the 20% and US comprised of the 60% to satisfy the relationship of their ratios. 

Therefore, 60% of Michelle's collection is made up of US stamps.  
     

Final answer:

Michelle's stamp collection consists of 60% U.S. stamps, determined by solving equations based on the given information that U.S. and Mexican stamps make up 80% of her collection and there are three times as many U.S. stamps as Mexican stamps.

Explanation:

The student asked what percent of Michelle's stamp collection is made up of U.S. stamps if 80% are U.S. and Mexican stamps and there are 3 times as many U.S. stamps as Mexican stamps. To solve this, let's call the percentage of U.S. stamps 'U' and the percentage of Mexican stamps 'M'. According to the given information, U + M = 80%, and U = 3M.

We substitute the second expression into the first to get 3M + M = 80%, which simplifies to 4M = 80%. Dividing both sides by 4 gives M = 20%. As the number of U.S. stamps is three times the number of Mexican stamps, we calculate U as 3 × 20% = 60%. So, the percentage of U.S. stamps in Michelle's collection is 60%.

A combination lock requires three numbers from 1 to 25. how many combinations are possible? did you use the sum rule or the product rule? (note that although we use the term combination with locks, order matters.)

Answers

Combinations possible = 25 * 25 * 25. Product rule

The point is that numbers can be reused. 1 5 1 is a valid combination as is   4 4 4 

20 * 5 * 1 is a valid combination as is 1 25 5

So the answer is 15625 "combinations" are possible <<<<< answer

hey can you please help me posted picture of question

Answers

The correct answer is: Option (D) 36


Explanation:
Multiply all the items to get all the possible outcomes (in this case sandwiches).
Kinds of breads = 3
Kinds of meat  = 4
Kinds of cheese = 3


Hence 4*3*3 = 36 (Option D)

which is the coefficient in the algebraic expression 12x + z^4 ?

Answers

I think the coefficient is the 12, before the variable 
Remember a coefficient is any number that comes before a variable as a multiplicative. So, in the equation 12x+z^4 our coefficient would be 12.

Hope this helps!

Use complete sentences to describe the domain of the cosine function.

Answers

The domain of a function is the set of the possible input values of the function. For example: consider the function f(x) = cos x, the domain of the function is the set of possible values of x.

The cosine function takes x values from all real numbers.

Therefore, the domain of the cosine function is a real numbers.


[tex]42 \times 42 \times 29 = [/tex]

Answers

The correct answer is 51156



Hope this helps :)
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how much training is required for puppeteering Plot and connect the points A(2,3), B(2,-5), C(-4,-3), and find the area of the triangle it forms. Earth is closest to the sun at what part of its orbit? Which statement best describes how Great Britains colonial empire contributed to the industrial revolution beginning in Great Britain 6 clients are throwing a party. Each cake serves 24 servings and has a party of 70 +3staff how many cakes are needed? Consider the problem Josh faces of how to allocate his weekly allowance between books and video games. An increase in Josh's allowance will A)shift his budget line to the left B)not affect the budget in any way. C)shift his budget line to the right. D)allow him to purchase more books but not enough video games.plz help About _____ percent of those who are diagnosed with borderline personality disorder are women. number of per month__number of moviegoersmore than 7____________965-7_______________ ___1802-4__________________219less than 2____________205total _________________700Use the frequency table. Find the probability that a person goes to the movies at least 2 times a month. Round to the nearest thousandth. A.0.138B.0.707C.0.137D.0.394sorry for the poor graph up top,,,,:/ The set of all numbers on the number line are called the ____________. A number that has an equivalent terminating or repeating decimal is called a(n) _______________. A number that has an equivalent decimal that is non-repeating is called a(n) _______________. Any number that can be written as a fraction of integers is a(n) ______________. Which of the following types of information does not need to be cited in academic writing? Question options: A word-for-word quotation from Newsweek magazine on the decline of honeybee populations. A photograph of Mount Kilimanjaro that you found on the National Geographic website. A list of important things you think students can do to survive college. A paragraph you wrote last year summarizing an article on Global Warming you read online. Which act banned arms or weapons sales to countries at war, forbid loans to countries at war, and did not allow Americans to travel on ships belonging to countries at war?Select one:a. Non-War Actb. Sherman Anti-Trust Actc. Neutrality Actsd. Alien and Sedition Acts Why did the United States enter World War I?the attack on Pearl HarborGerman advances through BelgiumGerman attacks on American shippingall of the above A cyclist rides her bike 7 mi east, and then 2 mi north before taking a break. Then she rides 5 mi east and then 3 mi north. What are the magnitude and direction of the cyclists resultant displacement?magnitude: 13.0 mi; direction: 22.6 north of eastmagnitude: 13.0 mi; direction: 67.4 north of eastmagnitude: 10.9 mi; direction: 67.4 north of east Read the following article on Gertrude Elion. Then, read the summary that follows. You will notice that the summary is incorrectly written. In this lesson, you learned six rules for writing an effective summary. Using this information, make three specific suggestions that would improve this ineffective summary. Important note: Do NOT write a summary. You will write three suggestions for improving this summary. Your suggestions must be based on the six rules of effective summaries that you learned in the lesson. Complete article from Encyclopedia Britannica U.S. pharmacologist (one who studies drug interactions) Gertrude B. Elion received the Nobel prize for medicine in 1988 along with George H. Hitchings and Sir James W. Black. The three were awarded the prize for their development of drugs used to treat several major diseases. Gertrude Belle Elion was born on Jan. 23, 1918, in New York City. She graduated from Hunter College in New York City with a degree in biochemistry in 1937. Unable to obtain a graduate research position because she was a woman, she took a series of jobs, including lab assistant, chemistry and physics teacher in New York City high schools, and research chemist. During this time she also took classes at New York University, where she earned a master's degree in 1941. Because she could not devote herself to full-time studies, Elion never received a doctorate. In 1944 Elion joined the Burroughs Wellcome Laboratories (now part of GlaxoSmithKline (a company that makes prescription medicines)). There she was first the assistant and then the colleague of Hitchings, with whom she worked for the next four decades. Elion and Hitchings developed an array (variety) of new drugs that were effective against leukemia, autoimmune disorders, urinary-tract infections, gout, malaria, and viral herpes. Their success was due primarily to their innovative (characterized by new or unique) research methods. Rather than using the trial-and-error approach used by previous pharmacologists, Elion and Hitchings examined the difference between the biochemistry of normal human cells and that of cancer cells, bacteria, viruses, and other pathogens (disease-causing agents). They used this information to create drugs that could target a particular pathogen without harming the human host's normal cells. Their methods enabled them to eliminate much of the guesswork and wasted effort typical in previous drug research. Although Elion officially retired in 1983, she helped oversee the development of azidothymidine (AZT), the first drug used in the treatment of AIDS. In 1991 she was awarded a National Medal of Science and was inducted into the National Women's Hall of Fame. She died on Feb. 21, 1999, in Chapel Hill, N.C. Student J. Doe's Summary Gertrude Elion was born in 1918 in New York City. She went to school for many years and eventually won the Nobel prize. She was unable to obtain a graduate research position because she was a woman. She took a series of jobs, including lab assistant, chemistry and physics teacher in New York City high schools, and research chemist. She was a scientist who helped discover many important drugs that saved lives. Elion also discovered new ways to test drugs. She died in 1999, 16 years after she retired from Burroughs Wellcome Laboratories.I think she was a terrific scientist. PLZ HELP NNOOOOOOOWW!! 15 points!!What is the midpoints of the line segment with endpoints (-3,7) and (9,-2)? Less than 3 percent of elders are estimated to have been victims of _____. Christy works at a bakery. The bakery sells cakes, cupcakes, and pies. Hayley ordered the cake shown . What influences racism? Hamlet then speak his most famous soliloquy in line 64-98. what is he saying? how does he seem to be feeling A mountain climber is at an altitude of 2.9 mi above the earths surface. From the climbers viewpoint what is the distance to the horizon