The cunninghams are moving across the country. mr. cunningham leaves 3 hours before mrs. cunningham. if he averages 55mph and she averages 75mph, how long will it take mrs. cunningham to overtake mr. cunningham?

Answers

Answer 1
His 3-hour head start puts Mr. Cunningham 165 miles ahead of her. She makes that up at the rate of (75 -55) = 20 mph, so will overtake Mr. Cunningham after (165 mi)/(20 mi/h) = 8.25 hours.
Answer 2
Final answer:

Mrs. Cunningham travels at a speed that is 20mph faster than Mr. Cunningham. Given that Mr. Cunningham has a 165-mile head start, Mrs. Cunningham would need 8.25 hours to cover this distance and catch up with him.

Explanation:

This question can be approached by analysing the relative speeds and the initial advantage Mr. Cunningham had. Mr. Cunningham travels for three hours at 55 mph before Mrs. Cunningham leaves, giving him a 165 mile head start. To determine how long it will take Mrs. Cunningham to overtake Mr. Cunningham, it's necessary to calculate how long it will take her to make up this 165-mile deficit at her faster speed.

Mrs. Cunningham travels 75mph, which is 20mph faster than Mr. Cunningham's speed. Thus, each hour, she closes the distance between them by 20 miles. To find out how many hours it takes her to close the 165 mile distance between them, divide this distance by her relative speed, so: 165miles / 20mph equals 8.25 hours.

Thus, it will take Mrs. Cunningham 8.25 hours to overtake Mr. Cunningham.

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Related Questions

ASAP PLEASE:

Using your knowledge of circles, label the following on the given diagram: chord, tangent, radius, secant, point of tangency and diameter. Name a minor arc and a major arc.

Answers

Green line is diameter
Blue line is a secant
Red is radius 
the top purpulish pink is tangent
the one from C to A is chord
minor arc would be AD
point of tangency is the yellow point

PLEASE HELP ASSSAAAPPPPP

Answers

B. would be your answer, I'm almost 100% sure.

Brainliest?
It would mean a lot!

HeLp PlEasE
A triangular lawn has sides that are 8 m and 12 m long with an included angle of 51°.
What is the area of this lawn?
Enter your answer as a decimal in the box. Round only your final answer to the nearest tenth.

Answers

The formula is
.. A = (1/2)ab*sin(C)
.. = (1/2)(8 m)(12 m)sin(51°)
area ≈ 37.3 m^2
Step-by-step explanation:

what is the area of this triangle 13in 94 degrees 7.5 in

Which of the following ordered pairs is a solution to y = 2x?

(3, 6)
(3, 8)
(3, 9)
(3,27)

Answers

The first option (3, 6) because 6= 3(2).

Answer:

The answer is (3, 8)

Step-by-step explanation:

so next time you try to make a exponent use ^ exsample 3^9  3 to the power of 9 anyways since the x axis or sum is 3 it is y = 2^3 multiply it so 2 x 2 x 2 = 8 so that answer is (3, 8)

if correct please crown

Help with this question.

Answers

Well.... I just finished  Algebra II, but I hated Unit Circle..... bleh

(x,y)
(cos[theta], sin[theta])
(4,-8)
So for cos to be POSITIVE, it can only be in either Quadrant I, or Quadrant IV
Quad I = (+,+)
Quad IV = (+,-) (Our cord has a negative sin, so that is it)
So it has to be in Quad IV, that is some information.

That narrows it down to either A or B.

If you have a calculator, you can put in:

cos(-2) or cos(-2/sq rt 5) i believe.... or its either the inverse, can’t entirely remember.
Im sorry I couldn’t help you more.

What is 60% of 60? need help with this one can some one show me how to do it?

Answers

If we want to find 60% of 60, we can solve by multiplying 60 by 0.6.

60 x 0.6 = 36

If we wanted to do it another way, we could multiply 60 by 0.5 and 0.1 seperately and add those numbers up.
You're looking for a number [tex]x[/tex] such that

[tex]\dfrac x{60}=\dfrac{60}{100}=60\%[/tex]

Multiply both sides by 60, so that

[tex]\dfrac{60x}{60}=\dfrac{60^2}{100}\implies x=\dfrac{3600}{100}=36[/tex]

Another way of doing it: you can easily find that 10% of 60 is 6. Then 60% would be 6 times 10%, and 6 times 6 is 36.

Which properties of equality justify steps b and d?


A. Multiplication Property of Equality; Subtraction Property of Equality

B. Subtraction Property of Equality; Division Property of Equality

C. Subtraction Property of Equality; Multiplication Property of Equality

D. Subtraction Property of Equality; Subtraction Property of Equality

Answers

C. Subtraction Property of Equality; Multiplication Property of Equality

For the first one, you are subtracting 7 from both sides (step b), to help isolate the y

since you are both subtracting, and "both sides" (meaning there is a equal sign) it is Subtraction Property of Equality.

For the second one, you are multiplying 2 from both sides (step d), to help isolate the y

since you are multiplying, and "both sides" (meaning there is a equal sign), it is Multiplication Property of Equality


hope this helps

C) Subtraction Property of Equality; Multiplication Property of Equality

- Prodixy ☕

All four functions below are quadratic functions. Which function has the greatest maximum value? Answer options attached in pictures. (10 points!!)

Answers

There are no pictures?

99 POINTS!!!!! FAST

Which set represents the domain of the function shown?

{(−3, 6), (0, 2), (4, 7), (11, 15)}

A. {(6, −3), (2, 0), (7, 4), (15, 11)}

B. {2, 6, 7, 15}

C. {−3, 0, 4, 11}

D. {−3, 0, 2, 4, 6, 7, 11, 15}

(P.S. The 99 points were obviously fake XD)

Answers

The domain is always the number on the left - it would be C. If it helps in the future, the range is always on the right. 

The Domain of the function {(−3, 6), (0, 2), (4, 7), (11, 15)} is  

What is Domain of Function?

The range of values that we are permitted to enter into our function is known as the domain of a function. The x values for a function like f(x) make up this set. A function's range is the collection of values it can take as input.

Given:

Set :{(−3, 6), (0, 2), (4, 7), (11, 15)}

So, the Domain is the input value

Domain = { -3, 0, 4, 11}

and, the range is output value

Range= {6, 2, 7, 15}

Hence, the domain is { -3, 0, 4, 11}.

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Can you check my answer?
Which of the following is an example of why irrational numbers are 'not' closed under addition?

√4 + √4 = 2 + 2 = 4, and 4 is not irrantonal
1/2 + 1/2 = 1, and 1 is not irrational
√10 + (-√10) = 0, and 0 is not irrational
-3 + 3 = 0, and 0 is not irrational

I was thinking:
–3 + 3 = 0, and 0 is not irrational
because it came up with a different number besides 3.,

Answers

-3+3 = 0 is an example of adding two rational numbers to get another rational number.

-3 = -3/1
3 = 3/1
0 = 0/1
each can be written as a fraction of whole numbers, so that's why they are rational

The actual answer is choice C

We are adding the square root of 10, written sqrt(10) in shorthand, to the negative version of the same number. Doing so leads to 0. This is using the property x + (-x) = 0. The left hand side of choice C has two irrational numbers. They add to 0 on the right hand side which is rational. The fact that we added two irrational numbers to get an rational result indicates that irrational numbers are not closed under addition.

The museum of science in boston estimated that 64% of all visitors came from within the state. on sunday, 2,500 people attended the museum. how many attended the museum from out of state?

Answers

Percentage of visitors who come from with in the state is 64%
Percentage of visitors who come from outside will be (100-64)=36%
The total number of attendees is 2500
the total number of of people who came from outside the state will be:
36/100×2500
=900 visitors
Final answer:

First, calculate the number of attendees from within the state by multiplying the total by 64% to get 1,600 people. Subtract this from the total to find the number of out-of-state attendees, 900 people.

Explanation:

This is a problem of percentage utilization and subtraction. First, we must determine the number of in-state attendees by multiplying the total number of attendees (2500 people) by the given percentage of in-state visitors (64%).

So, 2500 people x 0.64 = 1600 people.

These are the people who attended from within the state. To find out how many visitors came from out of state, we subtract this number from the total: 2500 people - 1600 people = 900 people. Therefore, 900 people attended the museum from out of state on Sunday.

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PLEASE someone help me on this
I would appreciate it.

Answers

2x-y =3
multiply by 4
8x - 4y = 12
3x +4y = 10 (unchanged equation)
------------------add
11x = 22

answer is A. the first.
first equation multiplied by 4 then sum to get 11x = 22

A kite has a height of 36 inches and a width of 30 inches. Explain how to use the area formula for a triangle to find the area of the kite.

Answers

Height of the kite is = 36 inches.

Width of the kite is = 30 inches

One of the ways to find the area is to draw a vertical line to break the kite into two equal triangles. Mark the base as 36 inches and height as 15 inches .

Now we will use the formula [tex]area=\frac{1}{2}*base*height[/tex] to find the area of each triangle. Then we will add both the areas to find the area of the kite.

Area of 1 triangle = [tex]\frac{1}{2}*36*15[/tex] = 270 square inches

Area of the 2nd triangle is also = 270 square inches

Hence, area of the kite = 270+270 = 540 square inches

The area of the kite is 540 square inches

The dimension of the rectangle is given as:

Height = 36 inches. Width = 30 inches

The area of the kite is then calculated using:

[tex]Area = \frac 12 \times (Height \times Width)[/tex]

Substitute values for Height and Width

[tex]Area = \frac 12 \times (36 \times 30)[/tex]

Evaluate the expression in bracket

[tex]Area = \frac 12 \times 1080[/tex]

Evaluate the product

[tex]Area = 540[/tex]

Hence, the area of the kite is 540 square inches

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Which function represents a line with a slope of −4 and a y-intercept of −2?
A) y = 4x − 2
B) y = −4x + 2
C) y = −4x − 2
D) y = −2x − 4

Answers

The correct answer is C) y = -4x - 2.

Answer:

C) [tex]y = -4x - 2[/tex]

Step-by-step explanation:

The general equation of a line in the xy plane is as follows:

[tex]y = mx + b[/tex]

where [tex]m[/tex] is the slope of the line, and [tex]b[/tex] is the intercept with the y axis.

In this case we want a line with a slope of -4, therefore:

[tex]m = -4[/tex]

and we also want a y-intercept of -2, so:

[tex]b = -2[/tex]

Substituting in the general equation of the straight line:

[tex]y = mx + b[/tex]

⇒[tex]y = -4x-2[/tex]

wich is option C

PLEASE HELP ASAP! BRAINLIEST TO BEST/RIGHT ANSWER

Answers

i think it is c but i don't know if I'm right

As viewed from a cliff 340 ft above sea level a ship is 450 feet from the shore what is the angle of depression from the cliff to the ship on the water below

Answers

angle depression= angle of elevation
To get the angle of depression we use the formula:
tan x=opposite/adjacent
where x is the angle of elavation
opposite is the height of the cliff
adjacent is the distance of the ship from the shore
thus
tan x=340/450
tan x=34/45
x=arctan 34/45
x=37.07
hence the angle of elevation= angle of depression=37.1°

Factor completely, then place the answer in the proper location on the grid. a ^2 - 25b ^2

Answers

Answer:

[tex](a+5b)(a-5b)[/tex]

Step-by-step explanation:

[tex]a^2 - 25b ^2[/tex]

Factor completely

write 25 in square form , 25= 5^2

[tex]a^2 -5^2b ^2[/tex]

[tex]a^2 -(5b)^2[/tex]

Apply difference of squares formula to factor it

[tex]x^2 - y^2 = (x+y)(x-y)[/tex]

[tex]a^2 -(5b)^2[/tex]

x= a  and y=5b

[tex](a+5b)(a-5b)[/tex]

if mnp has vertices at m (-5,-7) , N (7,-2) andcp (2,10) is mnp isoscles?

Answers

check the picture below.

now, clearly the longest side is MP, and for a triangle to be an isosceles, it has to have two equal sides, so two sides must be twins.

since MP is the longest one, that only leaves out NP and NM, are they twins?

[tex]\bf ~~~~~~~~~~~~\textit{distance between 2 points}\\\\ \begin{array}{ccccccccc} &&x_1&&y_1&&x_2&&y_2\\ % (a,b) &N&(~ 7 &,& -2~) % (c,d) &P&(~ 2 &,& 10~) \end{array}\\\\\\ % distance value d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ NP=\sqrt{[2-7]^2+[10-(-2)]^2}\implies NP=\sqrt{(2-7)^2+(10+2)^2} \\\\\\ NP=\sqrt{(-5)^2+12^2}\implies NP=\sqrt{25+144}\implies \boxed{NP=13}[/tex]

and now let's check NM

[tex]\bf ~~~~~~~~~~~~\textit{distance between 2 points}\\\\ \begin{array}{ccccccccc} &&x_1&&y_1&&x_2&&y_2\\ % (a,b) &N&(~ 7 &,& -2~) % (c,d) &M&(~ -5 &,& -7~) \end{array}~~~ \\\\\\ NM=\sqrt{[-5-7]^2+[-7-(-2)]^2}\\\\\\ NM=\sqrt{(-5-7)^2+(-7+2)^2} \\\\\\ NM=\sqrt{(-12)^2+(-5)^2}\implies NM=\sqrt{144+25}\implies \boxed{NM=13}[/tex]
My graphing program shows two of the side lengths are the same.

ΔMNP IS isosceles.

Solve the equation. Show all steps and work. Then check your answers (show all work). Finally, write the solution set.
x+1=√9x-11

Answers

Hello,
[tex]x+1=\sqrt{9x-11}\\ (x+1)^2=9x-11\\\ x²+2x+1-9x+11=0\\ x^2-7x+12=0\\ x²-4x-3x+12=0\\ x(x-4)-3(x-4)=0\\ (x-4)(x-3)=0\\ x=4\ or\ x=3 [/tex]

Sol={3,4}

(4,3) is the required solution set for the given equation

Given equation is x+1=√9x-11

Thus solving above equation for x :

[tex]x+1=\sqrt{9x-11}\\[/tex]

Squaring throughout we get,

[tex](x+1)^{2} =9x-11\\x^{2} +2x+1=9x-11\\x^2+2x-9x+1+11=0\\x^2-7x+12=0\\x^2-3x-4x+12=0\\x(x-3)-4(x-3)=0\\(x-4)(x-3)=0\\[/tex]

Thus we get :

Either (x-4) = 0 or (x-3) = 0

Thus we have x = 4 or x = 3  

Hence x = 4 or x = 3 is the solution set

name the sine, cosine, and tangent of angle a in the figure below

Answers

check the picture below.

now, we can simplify all those to 

[tex]\bf cos(A)=\cfrac{24}{12\sqrt{5}}\implies \cfrac{2}{\sqrt{5}}\quad \stackrel{rationalizing~it}{\implies }\quad \cfrac{2\sqrt{5}}{5} \\\\\\ sin(A)=\cfrac{12}{12\sqrt{5}}\implies \cfrac{1}{\sqrt{5}}\quad \stackrel{rationalizing~it}{\implies }\quad\cfrac{\sqrt{5}}{5} \\\\\\ tan(A)=\cfrac{12}{24}\implies \cfrac{1}{2}[/tex]

PLEASE ANSWER
This graph shows a portion of an odd function. Use the graph to complete the table of values.

Answers

Answer:

The complete table is shown below.

Step-by-step explanation:

The given function be represented by f(x).

Since, the function f(x) is an odd function.

So, [tex]f(-x)=-f(x)[/tex].

On substituting the values of x, we get,

[tex]f(-2)=-f(2)=-2[/tex]

[tex]f(-3)=-f(3)=-1[/tex]

[tex]f(-4)=-f(4)=-2[/tex]

[tex]f(-6)=-f(6)=-3[/tex]

Thus, the corresponding table is given by,

x                  f(x)

-2                  -2

-3                  -1

-4                   -2

-6                   -3

Answer:

x                  f(x)

-2                  -2

-3                  -1

-4                   -2

-6                   -3

Step-by-step explanation:

edge 2020

If Martha earns $3.25 per hour for babysitting, how much will she earn in: 1.5 hours? 2.5 hours? 3.5 hours?

Answers

IF MARTHA EARNS 3.25/HOUR FRO BABYSITTING (SHE IS UNDERPAID!)
IN 1.5 HOURS=3.25*1.5=4.88 DOLLARS
IN 2.5 HOURS=3.25*2.5=8.13 DOLLARS
IN 3.5 HOURS=3.25*3.5=11.38 DOLLARS  

Martha in:

1.5 hours will make: $4.88

2.5 hours will make: $8.13

3.5 hours will make: $11.38

The result of rounding the whole number 53,679,012 to the nearest millions place is: 53,000,000. 50,000,000. 53,600,000. 54,000,000.

Answers

To round it to the nearest millions place it would be 54,000,000

Final answer:

The number 53,679,012 rounded to the nearest million is 54,000,000. The digit in the hundred thousands place determines whether to round up or down. In this case, since it's a 6 (which is >= 5), we round up.

Explanation:

Rounding Whole Numbers to the Nearest Million

To round the whole number 53,679,012 to the nearest million, we need to look at the digit in the hundred thousands place, which is 6. Since this digit is 5 or greater, we round up. Therefore, we increase the digit in the millions place by one, giving us 54,000,000 as the rounded number to the nearest million.

For example, consider another number like 52,700,000. Using the same rounding principle, since the digit in the hundred thousands place is 7, which is greater than 5, we would round up to 53,000,000.

When rounding large numbers, the key is to look at the digit immediately to the right of the place value you are rounding to. If this digit is 5 or higher, you round up, and if it is 4 or lower, you round down.

PLZ HELPP FAST
Solve the triangle. A=44 degrees, a = 7,b=8

Answers

Answer: the sides are a = 7, b = 8, c = 10.

Explanation:

1) Use the law of sines:

  sin(A)         sin(B)
----------- =   --------- =>
     a                 b
 
2) Solve for B:

sin(B) = b * sin(A) / a = 8 * sin(44°) / 7 = 0.79389528

=> B = arcsin(0.79389528) = 52.55°

3) A + B + C = 180° => C = 180° - A - B = 180° - 44° - 52.55° = 83.45°

4) Use the law of sines again:

   sin(A)          sin(C)
------------- = -------------
      a                  c

5) Solve for c:

c = sin(C) * a / sin(A) = sin(83.45°) * 7 / sin(44°) = 10.0

Answer: a = 7, b = 8, c = 10.

6s - 4 = 8 (2 + 1/4s)

Answers

6s-4=8(2+1/4s)
6s-4=16+2s
-2s -2s
4s-4=16
+4 +4
4s=20
s=5
Final answer:

To solve the equation 6s - 4 = 8 (2 + 1/4s), simplify and isolate the variable 's'. The solution is s = 5.

Explanation:

To solve the equation 6s - 4 = 8 (2 + 1/4s), we need to simplify and isolate the variable 's'. First, distribute the 8 to both terms inside the parentheses:



6s - 4 = 16 + 2s



Next, move the variable terms to one side of the equation and the constant terms to the other side by subtracting 2s from both sides and adding 4 to both sides:



6s - 2s = 16 + 4



Combine like terms to simplify:



4s = 20



Finally, divide both sides by 4 to solve for 's':



s = 5

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Choose the correct simplification of the expression (a2)3. a5 a8 a a6

Answers

your answer is the last choice

Answer:

The correct answer is A to the 6th power, A^6

Step-by-step explanation:

First, apply the exponent rule. (a^b)^c = a^bc

You would get a^2*3 (* means times) (^ means to the power)

Second refine.

You would get A^6.

The answer is A^6.

f(x) = 2x2 – 4x – 3

0 = 2x2 – 4x – 3

3 = 2(x2 – 2x)

3 + 1 = 2(x2 – 2x + 1)

4 = 2(x – 1)2

2 = (x – 1)2

± = x – 1

1 ± = x

Mica is solving for the zeros of a quadratic function by completing the square. Her work is shown. What error did Mica make?




ANSWER CHOICES
Mica should have set each x = 0 instead of f(x).
Mica should have added 2 to 3 instead of 1.
Mica should have multiplied both sides by 2 instead of dividing.
Mica should have subtracted 1 from both sides instead of adding.

Answers

mica should have added 2 to 3 instead of 1

Answer:

Mica should have added 2 to 3 instead of 1.

Step-by-step explanation:

f(x) = 2x^2 – 4x – 3

0 = 2x^2 – 4x – 3

Mica added 3 on boths sides and factored out 2

3 = 2(x^2 – 2x)

We have 2 outside the parenthesis , so we multiply 1 with 2  and add it one left side

3 + 1 = 2(x^2 – 2x + 1) Error in this step

The above step becomes 3 + 2 = 2(x^2 – 2x + 1)

Mica should have added 2 to 3 instead of 1.

The elevator in the Empire State Building can pass 80 floors in 45 seconds. How many floors can it pass in 9 seconds?

Answers

[tex]\bf \begin{array}{ccll} floors&seconds\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 80&45\\ f&9 \end{array}\implies \cfrac{80}{f}=\cfrac{45}{9}\implies \cfrac{80\cdot 9}{45}=f[/tex]

A manufacture of skateboards offered a 5/2/1 chain discount too many customers. Bobs sporting goods ordered 20 skateboards for a total of $625 list price. What was the net price of the skateboards?

Answers

A discount string 5/2/1 means the following:
 1) Apply 5% discount to the original price.
 2) Apply 2% discount to the result of step 1).
 3) Apply 1% discount to the result of step 2).
 We have then that the result will be given by:
 625 * (0.95) * (0.98) * (0.99) = 576.05625 $
 Then, the price of each skateboard is:
 (576.05625) /20=28.8028125 $
 Answer:
 
The net price of the skateboards was:
 
28.8028125 $

The circle above has a radius of 9 cm. What is the area of the circle?

(Use PI = 3.14)

Answers

3.14*9^2=254.469

answer: 254.469
The meaning of the area is the measurement of a surface in this case a circle, which can be find by using the formula A=πr^2, where r is equal to the radius of the circle.

On this exercise is given that the radius of the circle is 9 cm and it is asked to find its area and use 3.14 as the value of π. Therefore, to find the area of the circle you should substitute the value of the radius and the value of pi into the formula A=πr^2.

A=πr^2
A=(3.14)(9)^2
A=(3.14)(81)
A=254.34

The area of the circle is 254.34 cubic centimeters.

Other Questions
Could someone explain me question 9 thank you Patient presents with a suspicious lesion on her left arm. with the patient's permission the physician marked the area for excision. the margins and lesion measured a total of 0.9 cm. the wound measuring 1.2 cm was closed in layers using 4-0 monocryl and 5-0 prolene. pathology later reported the lesion to be a sebaceous cyst. what codes are reported? Choose the correct pronoun.I just found my favorite photo of my brother and (he, him).I think it's him but I'm not sure >. Lf cows produce more milk when fed wheat then the cows that were not fed wheat will produce less milk Why did people in the middle ages center their community around a lord? william jennings bryan believed strongly in and became an advocate of what populist party policy position Why is a small crescent of light often observed on the moon when it is exactly in the new phase? Can blind people see their dreams? 17) What event led to Truman's final decision to use the atomic bomb against Japan?A)Japanese attacks on nearby American shipsB)the Allies strength and number of victoriesC)Japan's dismissal of the Potsdam DeclarationD)the German surrender to Allied forces in Europe18) Which of these was a national political leader during World War II?A)Franz JosefB)Woodrow WilsonC)Winston ChurchillD)Paul von Hindenburg19) The Lend-Lease Act was an attempt by the United States toA)stay out of World War I.B)supply iron and oil to Japan.C)divide land acquired from the Mexican War.D)let England borrow weapons in the early 1940s.20) Which of these contributed to the Crash of 1929 and the Great Depression?A)stock market speculationB)the effects of World War IIC)success of the U.S. farm economyD)foreign boycotts of U.S. products Which of the following was not something Mohandas Gandhi wanted for the Indian people? A. freedom from Great Britain B. equal rights for women C. peace between religious groups D. migration to Africa and Australia Annabel went to the beach for the day and rented a surfboard. The surfboard rental was $7.00 per hour, plus a rental fee of $12.00 which equation could Annabel use to find the total cost (c) if renting a surfboard for x amount of hours? What command is used to locate all occurrences of the word "dog" in a document? Compare the evaporation of a contained liquid with that of an uncontained liquid. The honeymoon phase in abuse is __________.A.the reason most couples stay togetherB.when the couple starts fightingC.when the abuser physically attacks the victimD.the time when couples decide to split upPlease select the best answer from the choices provided.ABCD Two times a number minus 8 is less than 5. Potassium-40 can decay into either calcium-40 or argon-40. All three of these atoms have essentially the same weight. Ninety percent of the potassium-40 will decay into calcium-40, and only ten percent will decay into argon-40. When argon-40 is produced by the radioactive decay of potassium-40 inside a rock, the argon-40 produced by the decay is a gas and is trapped inside the rock. The amount argon-40 trapped in a rock can be measured by grinding up the rock and capturing the liberated argon-40 gas.Suppose the amount of potassium-40 inside a rock is measured to be 0.81 milligrams, and the amount of argon-40 gas trapped in the rock is measured to be 0.377 milligrams.1.How much of the potassium-40 that was originally present inside the rock has undergone radioactive decay to produce argon-40? Why did President Lincoln want Grant to command the Union army after the Battle of Gettysburg? The principal objectives of the Populists were to _____. What was seen by many Americans as an escalation of the Vietnam War?the Pentagon Papersthe surrender of South Vietnamthe Gulf of Tonkin Resolutionthe 1970 bombing of Cambodia You observe heat, light, and sound released by a chemical reaction. This reaction is (2 points)absorbing energyconsuming energyexothermicendothermic