y = -x +3
x+y = 17

Are these parallel?

Answers

Answer 1

Answer:

Yes

Step-by-step explanation:

The equations need to be in slope intercept form. The first equation is but the second one isn't. Solve the second equation for y to put it in slope intercept form.

x + y = 17

x - x + y = 17 - x

y = -x + 17

To determine if they are parallel the slopes need to be the same.

y = -1x + 3

y = -1x +17

The slope are both -1, so they are parallel

Answer 2

Answer:

Yes

Step-by-step explanation:


Related Questions

The boats rate is ____ mph(Type an integer or decimal)

Answers

Let

x ----> rate of the boat in still water (mph)

y ---> rate of the current (mph)

Remember that

The speed is equal to dividing distance by the time

speed=d/t

d=speed*time

so

Upstream

speed=x-y

time=5 hours

100=(x-y)*5

x-y=20 --------> equation 1

Downstream

speed=x+y

time=4.5 h

100=(x+y)*4.5

x+y= 100/4.5 --------> equation 2

Adds equation 1 and equation 2

x-y=20

x+y= 100/4.5

-----------------

2x=20+(100/4.5)

2x=190/4.5

x=190/9

x=21.11 mph

therefore

The answer is 21.11 mph

One cubic foot holds 7.48 gallons of water, and 1 gallon ofwater weighs 8.33 pounds. How much does 6 cubic feet ofwater weigh in pounds? In tons?

Answers

We know that

• 1 cubic foot holds 7.48 gallons of water.

,

• 1 gallon of water weighs 8.33 pounds.

The given information is about ratios that we must use to find the answer. Remember that a ratio is a quotient between two magnitudes, that means each statement above represents a fraction which must multiply "6 cubic feet" in order to get the answer. As follows

[tex]6ft^3\cdot\frac{7.48gallons}{1ft^3}\cdot\frac{8.33lb}{1gallon}=\frac{6\cdot7.48\cdot8.33}{1}lb=373\text{.}85lb[/tex]

Therefore, 6 cubic feet weighs 373.85 pounds.

On the other hand, 1 ton is equivalent to 2000 pounds. Knowing this, we calculate

[tex]373.85lb\cdot\frac{1ton}{2000lb}\approx0.19ton[/tex]

Therefore, 6 cubic feet weighs about 0.19 tons.

Solve the equation below by completing the square and then solving for x.2 + 14x + 24 = 0A. X=-12 or x= -2B. x=2 or x=-2C. X=-2 or x=-5D. X= 8 or x= 3

Answers

2x^2 + 14x + 24 = 0

x^2 + 7x + 12 = 0

Then

x^ + (14/2) x + 12 + [7x + 49 ] = 7x + 49

Now form square

[ x + 7x + 7x + 49 ] = 7x + 49 - 12

[ x + 7]^2 = 7x + 37

Then now find x

x^2 + 7x = -6

x^2 + 7x + 7^2/4 = 7^2/4 - 6

then

( x + 7/2)^2 = 49/4 - 24/4

(x + 7/2) = ±√ (25/4)

. x = 5/2 - 7/2

and. x = 5/2 + 7/2

Then solutions are

x = -2

x= -12

ANSWER IS

OPTION A

Create a polynomial of degree 6 that has no real roots. Explain why it has no real roots. Is it possible to have a polynomial with an odd degree that has no real roots? Explain.

Answers

Create a polynomial of degree 6 that has no real roots.

y = ( x^2 + 4) ( x^2 +7 ) ( x^2+5)

Multiplying all the terms together

y =x ^6 + 16 x^4 + 83 x^2 + 140

Using the zero product property

0= x^2 +4 x^2+7 =0 x^2 + 5 =0 will each give a complex solution

x^2 = -4 x^2 = -7 x^2 = -5

This means x = 2i or -2i x = i sqrt(7) or -i sqrt(7) x = i sqrt (5) or - i sqrt(5)

These solutions can be in the form a+bi

Therefor it will have no real roots

y = x^6 + 16 x^4 + 83 x^2 + 140 has no real solutions

Complex solutions come in pairs, so an odd degree must have a real solution

i am stuck on this question. any help would be greatly appreciated

Answers

step 1

determine the slope of the given line

y=(3/5)x-17

The slope is m=3/5

Remember that

If two lines are parallel, then their slopes are equal

that means

The slope of the parallel line to the given line is m=3/5 too

step 2

Find out the equation of the line parallel to the given line

y=mx+b

we have

m=3/5

point (-5,15)

substitute and solve for b

15=(3/5)(-5)+b

15=-3+b

b=18

therefore

The equation of the line is

y=(3/5)x+18

write the vertex form equation of the parabola with, vertex: (10,9), passes through: (12,-7)

Answers

Th equation of a parabola in its vertex form is;

y = a(x-h)² + k

(h,k) are the coordinates of the vertex and a is a constant

(h, k) = (10, 9)

substitute the above into the equation

y = a(x- 10)² + 9 -------------------(1)

Next is to find the value of a

substitute x=12 and y= -7 into equation (1)

-7 = a (12 - 10)² + 9

-7 - 9 = 4a

-16 = 4a

a = -4

The equation of the parabola will be formed by substituting a = -4 in equation (1)

y = -4(x - 10)² + 9

Test scores are normally distributed with a mean of 86 and a standard devotion of 2.2 what percent scored between 83.8 and 92.6? What percent scored below 83.8?

Answers

Z- Score formula is:

[tex]\begin{gathered} Z=\frac{x-\mu}{\sigma} \\ Z\text{ is the z-score (Standard score)} \\ X\text{ is the value to be standardized} \\ \mu\text{ is the mean} \\ \sigma\text{ is the standard deviation} \end{gathered}[/tex]

Here, the mean is 86, while the standard deviation is 2.2

Percent between 83.8 and 92.6 is;

[tex]P(\frac{83.8-86}{2.2}The percent between 83.8 and 92.6 = 0.83999

[tex]P(Z<-1)=\text{ 0.15866}[/tex]

Percent score below 83.8 is 0.15866

Given the venn diagram below, what is the correct notation?A. ⊘B. (M∩F)′C. (M∪F)′D. none of these

Answers

Given

SolutionThe complement of a set using Venn diagram is a subset of U. Let U be the universal set and let A be a set such that A ⊂ U. Then, the complement of A with respect to U is denoted by A' or AC or U – A or ~ A and is defined the set of all those elements of U which are not in A

The shaded region is

[tex](M\cup\text{ F \rparen'}[/tex]The final answer

Option C

Hello,

I have paid the $29.00 monthly subscription for my son (jalen); I have signed up only to pay the monthly payment. Sorry to say, he does not live with me. I earlier sent you an email explaining the same with no reply from you. So how does he proceed using his information to freely access your program?
Looking forward to hearing from you shortly.

THANKS,
climacus

Answers

Answer:

Step-by-step explanation:

determine the lateral surface area of the cylinder

Answers

Question:

Solution:

Remember that the total area surface of the cylinders is given by the formula:

[tex]S\text{ = 2}\pi rh+2\pi r^2[/tex]

where r is the radius of the cylinder and h is its height. Now, in this case, we have that r= 10 m and h = 5m, then replacing these values in the previous equation we obtain:

[tex]S\text{ = 2}\pi(10)(5)+2\pi(10^2)=942.48^{}[/tex]

then, we can conclude that the correct answer is:

[tex]S\text{ =}942.48^{}[/tex]

What is the value of 3÷5?

Answers

Answer:

0.6

Step-by-step explanation:

3/5 has a value of 0.6

Find x rounded to the nearest whole degree. Be sure to round correctly!

Answers

[tex]\begin{gathered} \cos x=\frac{109}{134} \\ x=\cos ^{-1}\frac{109}{134} \\ x=35.6 \end{gathered}[/tex]

answer: 36°

The volume of cylinder is 504 pi cm^(3) & height is 14cm Find the curved surface area 8 total surface area.

Answers

The Solution:

The correct answers are:

Curved surface area = 527.79 squared centimeters

Total surface area = 753.98 squared centimeters.

Given that the volume of a cylinder with height 14cm is

[tex]504\pi cm^3[/tex]

We are required to find the curved surface area and the total surface area of the cylinder.

Step 1:

We shall find the radius (r) of the cylinder by using the formula below:

[tex]V=\pi r^2h[/tex]

In this case,

[tex]\begin{gathered} V=\text{volume =504}\pi cm^3 \\ r=\text{ radius=?} \\ h=\text{ height =14cm} \end{gathered}[/tex]

Substituting these values in the above formula, we get

[tex]504\pi=\pi r^2\times14[/tex]

Finding the value of r by first dividing both sides, we get

[tex]\begin{gathered} \frac{504\pi}{14\pi}=r^2 \\ \\ r^2=36 \end{gathered}[/tex]

Taking the square root of both sides, we get

[tex]\begin{gathered} \sqrt[]{r^2}\text{ =}\sqrt[]{36} \\ \\ r=6\operatorname{cm} \end{gathered}[/tex]

Step 2:

We shall find the curved surface area by using the formula below:

[tex]\text{CSA}=2\pi rh[/tex]

Where

[tex]\begin{gathered} \text{ CSA=curved surface area=?} \\ h=14\operatorname{cm} \\ r=6\operatorname{cm} \end{gathered}[/tex]

Substituting these values in the formula above, we have

[tex]\text{CSA}=2\times6\times14\times\pi=168\pi=527.788\approx527.79cm^2[/tex]

Step 3:

We shall find the total surface area by using the formula below:

[tex]\text{TSA}=\pi r^2+\pi r^2+2\pi rh=2\pi r^2+2\pi rh[/tex]

Where

TSA= total surface area and all other parameters are as defined earlier on.

Substituting in the formula, we get

[tex]\text{TSA}=(2\pi\times6^2)+(2\pi\times6\times14)=72\pi+168\pi[/tex][tex]\text{TSA}=240\pi=753.982\approx753.98cm^2[/tex]

Therefore, the correct answers are:

Curved surface area = 527.79 squared centimeters

Total surface area = 753.98 squared centimeters.

Tan (a) cos (a)= sin (a)Trig: use trigonometric identities to transform the left side of the equation into the right side

Answers

hello

the question here relates to trionometric identies and we can easily solve this once we know some of the identities

for example

[tex]undefined[/tex]

Find the equation of the linear function represented by the table below in slope-intercept form.xy1-82-123-164-20

Answers

Given :

The table for y and x is given as

Explanation :

The slope-intercept form is determined as

[tex]y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)[/tex]

First find the slope of the equation using the coordinates from the table.

[tex]m=\frac{-12-(-8)}{2-1}=\frac{-12+8}{1}=-4[/tex]

Now substitute the values in the slope-intercept form.

[tex]\begin{gathered} y-(-8)=-4(x-1) \\ y+8=-4(x-1) \\ y=-4x+4-8 \\ y=-4x-4 \end{gathered}[/tex]

Answer:

Hence the equation of line is determined as

[tex]y=-4x-4[/tex]

Multiply each term inside the parentheses by the factor outside the parentheses 2(x - 4) = 2 x + 2(-4) Multiply Simplify.2(×-4)=2x+2(-4)

Answers

We have the expression:

[tex]2(x-4)=2x+2(-4)[/tex]

We solve as follows:

[tex]2x-8=2x-8[/tex]

If we want to simplify further, we will get:

[tex]2x=2x\Rightarrow x=x\Rightarrow0=0[/tex]

***

In order to simplify the expression:

[tex]2(x-4)=2x+2(-4)[/tex]

We multiply 2 times x and add 2 times -4, that is:

[tex]2x+2(-4)=2x+2(-4)[/tex]

Now, we multiply 2 times -4 in both sides, that is:

[tex]2x-8=2x-8[/tex]

Linda's medicine bottlesays "If you will be driving, then youshould not take this medicine." What arethe inverse, converse, and thecontrapositive of this statement?

Answers

For two statements p and q, and the compounded statement "If p, then q", we have the following definitions for the inverse, converse, and contrapositive of this compounded statement:

inverse: If not p, then not q.

converse: If q, then p.

contrapositive: If not q, then not p.

So, for the presented statement, i. e., "If you will be driving, then you should not take this medicine" we have:

p: you will be driving

q: you should not take this medicine

Notice that:

not p: you will not be driving

not q: you may take this medicine

Then, using the above definitions, we write:

inverse: If you will not be driving, then you may take this medicine.

converse: If you should not take this medicine, then you will drive.

contrapositive: If you may take this medicine, then you will not be driving.

helppppppppppppppppppppppppppppppppppp

Answers

For (fog)(x) all you do is substitute the value of x for the value of (g)(x) because (fog)(x)=(f(g(x))), and vice versa for (gof)(x)!!

List the elements in the set
{x 1 x is a negative multiple of 5}

Answers

S={-5,-10,-15,-20,-25......}; these are few negative multiples of 5 as stated in the set builder form of set theory {x :x is a negative multiple of 5}.

What is set?

A set contains elements or members that can be mathematical objects of any kind, including numbers, symbols, points in space, lines, other geometric shapes, variables, or even other sets. A set is the mathematical model for a collection of various things.

What is set builder form?

Set builder notation is a type of mathematical notation used to describe sets by listing their components or highlighting the requirements that each member of the set must meet. We write sets in the form of in the set-builder notation

{y | (properties of y)} OR {y : (properties of y)}

Here,

{x :x is a negative multiple of 5}

S={-5,-10,-15,-20,-25.....}

According to the set builder form of set theory, {x:x is a negative multiple of 5}  S={-5,-10,-15,-20,-25...}; these are a few negative multiples of 5.

To know more about set,

https://brainly.com/question/28952278

#SPJ13

Solve the system using any method. State your solution as an ordered pair. DO NOT include spaces in your answer.

Answers

Answer: (- 4, - 7)

Explanation:

The given equations are

y = 5x + 13

y = 2x + 1

We would equate both equations. We have

5x + 13 = 2x + 1

5x - 2x = 1 - 13

3x = - 12

x = - 12/3

x = - 4

Substituting x = - 4 into y = 2x + 1, we have

y = 2(- 4) + 1 = - 8 + 1

y = - 7

The solution is

(- 4, - 7)

There is a total of $4,840 in an account after 2 years of earning compound interest at a rate of 10%. What was the original amount invested?

Answers

In order to find the original amount invested, we can use the following formula:

[tex]P=P_0(1+i)^t[/tex]

Where P is the final amount, P0 is the original amount, i is the interest rate and t is the amount of time invested.

So, using P = 4840, i = 10% = 0.1 and t = 2, we have:

[tex]\begin{gathered} 4840=P_0(1+0.1)^2_{} \\ 4840=P_0\cdot1.1^2 \\ 4840=P_0\cdot1.21 \\ P_0=\frac{4840}{1.21} \\ P_0=4000 \end{gathered}[/tex]

So the original amount invested is $4,000.

Max packs cereal boxes into a larger box. The volume of each cereal box is 175 cubic inches. What is the approximate volume of the large box? Please help!!

Answers

Using mathematical operations, we can conclude that the volume of the larger box is approximately 2,800 in³.

What are mathematical operations?The rules governing the order of operations specify the order in which multiple operations should be performed to solve an expression. Parentheses, Exponents, Multiplication, Division (from left to right), Addition, and Subtraction are the order in which the operations are performed (from left to right).

So, in the image, we can observe that the large box contains 6 boxes of cereals in front and possibly 8 boxes of cereals at the back.

In total, there are 16 small boxes in the big box.

Then, the volume of the larger box can be:

175 × 16 = 2,800 in³

Therefore, using mathematical operations, we can conclude that the volume of the larger box is approximately 2,800 in³.

Know more about mathematical operations here:

https://brainly.com/question/28937023


#SPJ13

Michael and Ashley each buy x pounds of turkey and y pounds of ham. Turkey costs $3 per pound at Store A and $4.50 per pound at Store B. Ham costs $4 per pound at Store A and $6 per pound at Store B. Michael spends $18 at Store A, and Ashley spends $27 at Store B. Could Michael and Ashley have bought the same amount of turkey and ham?

Answers

Step 1

Michael spends $18 at store A

He buys x pounds of turkey and y pounds of ham.

But turkey costs $3 in-store A and ham costs $4 in-store A

Therefore, we will have the following equation for Michael

[tex]3x+4y=18---(1)[/tex]

Step 2

Ashley spends $27 in-store B

She buys x pounds of turkey and y pounds of ham.

But turkey costs $4.50 in-store B and ham costs $6 in-store B.

Therefore, we will have the following equation for Ashley

[tex]4.5x+6y=27----(2)[/tex]

Step 3

Solve the equations graphically

If the graphs of the equations are the same, then there are an infinite number of solutions that are true for both equations. Since the graphs are the same, then there are infinitely many solutions true for both equations.

For instance, the points if we test for the points on the graph, we will conclude if both Michael and Ashley bought the same amount of turkey and ham.

[tex]\begin{gathered} 3x+4y=18_{} \\ 4.5x+6y=27 \\ At\text{ x =2 and y=3} \\ we\text{ have,} \\ 3(2)+4(3)=18_{} \\ 6+12=18 \\ 18=18 \\ 4.5(2)+6(3)=27 \\ 9+18=27 \\ 27=27 \\ \text{At x=6, y=0} \\ we\text{ have} \end{gathered}[/tex][tex]\begin{gathered} 3(6)+4(0)=18 \\ 18=18 \\ 4.5(6)+6(0)=\text{ 27} \\ 27=27 \end{gathered}[/tex]

Therefore yes, Michael and Ashley could have bought the same amount of turkey and ham.

In a student council election there are 2 people running for treasure 3 people running for secretary 4 running for vice president and 2 people running for class president How many possible outcomes are there?

Answers

Given:

There are given that the 2 people running for treasure, 3 people running for secretary, 4 running for vice president, and 2 people running for class president.

Explanation:

According to the concept of outcomes:

The outcomes are defined for the possible results of an experiment.

Then,

In the given question, the outcomes are:

[tex]\text{Outcomes}=2+3+4+2=11[/tex]

Final answer:

Hence, the total number of outcomes is 11.

Which best represents the number of square centimeters in a square foot?A 366 square centimeters B 144 square centimeters C 930 square centimeters D 61 square centimeters

Answers

Answer:

C. 930 square centimeters

Explanation:

First, recall the standard conversion between cm and ft.

[tex]1\text{ ft}=30.48\operatorname{cm}[/tex]

Therefore:

[tex]\begin{gathered} (1\times1)ft^2=(30.48\times30.48)cm^2 \\ =929.03\operatorname{cm}^2 \\ \approx930\text{ square cm} \end{gathered}[/tex]

The correct choice is C.

Jamie paid the rent well past the due date for the months of April, May and June. As a result, he had been charged a total of $75 as a late fee. Howmuch did he pay as late fee per month?Use 'f to represent the late fee $$ per month.

Answers

Total fee = $75

Number of months = 3

Divide the total fee by the number of months

75/3 = $25 per month

Which expression can be used to find the nth term in this sequence position: 1 2 3 4 5 nvalue of term: 2 5 10 17 26 ?

Answers

n²+1 where n is the position of the sequence

1) Considering the sequence (2,5,10,17,26,...) corresponding to 1,2,3,4,5,...

Let's figure out how that sequence grows:

5 -2 = 3

10 -5 = 5

17-10= 7

26-17= 9

And examining the differences from each difference we have:

5-3 =2

7-5 = 2

9-7 =2

2) So we can write the following table, where the first line is the sequence, then the positions, then the subtraction between them.

As it is a quadratic formula, we can write in the general form and then plug x=0

[tex]\begin{gathered} a_n=n^2 \\ 2\text{ 5 10 17 26} \\ 1\text{ 2 3 4 5 6 } \\ 1\text{ 4 9 25 36} \\ a_n=n^2+0n+1 \\ a_n=n^2+1 \end{gathered}[/tex]

3) Hence, to find the 6th term, for instance, we plug n=6 so

6²+1 = 31. So the formula to find the nth term is n² +1

3) Finally, the sequence is given by n² +1 where n is the position of the term.

What is the value of the expression 2c( a + b) when a = 2, b = 5, and c = 4

Answers

The given expression is

2c(a + b)

From the information given,

a = 2

b = 5

c = 4

By substituting these values into the expression, it becomes

2 * 4(2 + 5)

= 8(7)

= 56

The value of the expression is 56

Compare f(0) and g(0)f(0) is <, =, or > to g(0)

Answers

From the graph of f(x), it can be obseved that function f(x) value at x = 0 is -3, which means that f(0) = -3.

From the graph of g(x), it can be observed that g(0) = 0.

As value 0 is greater than -3. So f(0) is lesser than g(0).

Answer: f(0) < g(0)

Convert the following percent to a simplified fraction: 6%

Answers

Given:

6%

To convert the given percent into simplified fraction, we first divide it by 100 as shown below:

[tex]\begin{gathered} 6\%=\frac{6}{100} \\ Simplify \\ =\frac{3}{50} \end{gathered}[/tex]

Therefore, the answer is:

[tex]\frac{3}{50}[/tex]

Other Questions
help mee pleaseeeeeeeeeeeeee Can you write a quadratic function that does not have a y-intercept? Explain 3 ways the mongols influenced world culture. Determine normal boiling point of chloroform if its heat of vaporization is 31. 4 KJ/mol and it has a vapor pressure of 190 mmHg at 25 C Find the measure of angle CDB. Explain your reasoning, including the theorem or postulate you used. (2 pts.) b) Find the measure of angle. (1 pt.) Find the slope of the line passing through points -8, 8 and 7,8 You have discovered another alien.What is the equation of the line that provides the correct path to rescue this alien? A person has 29 1/2 -yd of material available to make a doll outfit. Each outfit requires 3/4 yd of material. a. How many outfits can be made? b. How much material will be left over? In 1980 approximately 4,825 million metric tons of carbon dioxide emissions were recorded for the United States. That number rose to approximately 6,000 million metric tons in the year 2005. Here you have measurements of carbon dioxide emissions for two moments in time. If you treat this information as two ordered pairs (x, y), you can use those two points to create a linear equation that helps you make predictions about the future of carbon dioxide emissions!A) Organize the measurements into ordered pairs. B) Find the slope,C) Set up an equation in point-slope form,D) Show the equation in slope-intercept form,E) Predict emissions for the year 2020, 2 dot plots. Both number lines go from 0 to 10. Plot 1 is titled fifth grade. There are 2 dots above 1, 3 above 2, 1 above 3, 4 above 4, 5 above 5, 5 above 6, 2 above 7, 2 above 8, 0 above 9, 0 above 10. Plot 2 is titled seventh grade. There are 2 dots above 0, 2 above 1, 3 above 2, 5 above 3, 5 above 4, 3 above 5, 3 above 6, 1 above 7, and 0 above 8, 9, and 10.The dot plot shows the number of hours, to the nearest hour, that a sample of 5th graders and 7th graders spend watching television each week. What are the mean and median?The 5th-grade mean is .The 7th-grade mean is .The 5th-grade median is .The 7th-grade median is . has overdrawn his bank account Jim has overdrawn his bank account and has a balance of -$3.47.he received a paycheck of $292.54 he deposits $163.93 of his paycheck into his account how much does Jim have in his bank account after the deposit is made The displacement (in meters) of a particle moving in a straight line is given by S= t^2 - 7t + 17 ii)iii)iv) An Olympic long jumper is capable of jumping 8.0 m. Assuming his horizontal speed is 9.1 m/s as he leaves the ground, how long is he in the air and how high does he go? A helicopter takes off and travels forward at an angle of 59.4 above horizontal. After following this path for 294 meters, the pilot changes the angle of flight to 10.5 degrees above horizontal and follows this path for 849 meters. After these two legs, what is the helicopters horizontal distance from the point of take off?985 m447 m408 m964 m during a risk management project, an evaluation of several controls determines that none are cost-effective in reducing the risk related to a specific important asset. what risk response is being exhibited by this situation? selena, a surgeon, purchases a disability policy with a base benefit of $5,000 per month and an sis offset benefit of $1,500. selena is now disabled and receives a $1,000 in social security disability benefits. how much will selena receive from the insurance company initially Which statements about the graph of the exponential function f(x) are TRUE?The x-intercept is 1.The y-intercept is 3.The asymptote is y = -3The range is all real numbers greater than -3The domain is all real numbers.f(x) is positive for all x-values greater than 1As x increases, f(x) approaches, but never reaches, -3. during the year, brenda (70), a single taxpayer, received $18,000 in social security benefits. her only other income consisted of $6,000 in wages from a part-time job and a pension distribution of $8,500. how much of brenda's social security benefits are taxable? stereo corp. produces radios. the following information on inventory and production pertains to the year 2017. total manufacturing costs debited to wip in 2017 $336,000 beginning wip $37,000 ending wip $82,000 beginning finished inventory $0 ending finished goods inventory $45,500 overapplied overhead $7,500 calculate the cost of goods manufactured at stereo corp. in the year 2017. An acorn fell from a branch 20 feet high and landed on a branch 7 feet high. How long did ittake the acorn to fall?