fred walks 20 miles toward the north. he turns left and walks 40 miles. he again turns left and walks 20 miles. finally, he walks 20 miles after turning to the left. how far is he from his starting point.

Answers

Answer 1

Using vector calculation and analyzing directions, The answer is 20 miles west from the starting point.

What is a vector?

An item with both magnitude and direction is referred to be a vector. A vector can be visualized geometrically as a directed line segment, with an arrow pointing in the direction and a length equal to the magnitude of the vector. The vector points in a direction from its tail to its head.

What do you mean by vector addition?

The process of adding two or more vectors together to create a vector sum is known as vector addition.

20 miles to north and 40 miles left .

Using triangle law of vector addition, Distance from point at the location = [tex]\sqrt{20^2 + 40^2}[/tex]

=[tex]20\sqrt 5[/tex] miles.

Now turns left walks 20miles , Using triangle law of vector addition,

distance from point at the location = [tex]\sqrt{(20\sqrt 5)^2 - 20^2}[/tex]

=40 miles from location.

This location is horizontally same from the start point.

So he turns left and walks 20miles again.

distance from point= 40-20

=20 miles west of start point.

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Related Questions


Solve for x.
A) 6
C) 4
B) 12
D) 2

Answers

Answer:

x=4

Step-by-step explanation:

go it right on edge

Now, suppose assuming the true fraction of voters is .65, the estimated standard deviation of X is given as 6.65. Suppose you find that 115 people actually voted yes in the random sample of 200. Conduct hypothesis testing using p value approach at 5% significance level to determine the validity of Candidate A’s claim that he was at least supported by 65% of the voters. (Make sure you show the steps of hypothesis testing)

Answers

Answer:

reject H0 ; conclude that there is significant evidence to conclude that candidate A is supported by less than 65% voters

Step-by-step explanation:

x = 115

n = 200

Phat = x / n = 115 / 200 = 0.575

H0 : P0 ≥ 0.65

H1 : P0 < 0.65

TEST STATISTIC :

Phat - P0 ÷ sqrt[(P0(1-P0))/n]

0.575 - 0.65 ÷ sqrt[(0.65(0.35))/200]

-0.075 ÷ 0.0337268

Test statistic -2.237

Pvalue :

P(Z < - 2.237) = 0.012643

α = 0.05

Pvalue < α

0.012643 < 0.05 ; We reject H0

We can conclude that there is significant evidence to conclude that candidate A is supported by less than 65% voters

What should be done first to evaluate the expression?

6 + 8 ÷ 4 + (4 × 5)²

Answers

Do the parentheses first :) ʕ•ᴥ•ʔ

Answer:

First, follow the first step in PEMDAS so you would do the parenthesis first followed by exponents, multiplication, division, addition, then subtraction

Step-by-step explanation:

6 + 8 ÷ 4 (4*5)^2

6 + 8 ÷ 4 + 20^2

6 + 8 ÷ 4 + 400

6 + 2 + 400

= 408

PLEASE I NEED THE ANSWER QUICK
v + 25 < 5
v = ?

Answers

[tex]\huge\text{Hey there!}[/tex]

[tex]\mathsf{v + 25 < 5}[/tex]

[tex]\large\textsf{SUBTRACT 25 to BOTH SIDES}[/tex]

[tex]\mathsf{v + 25 - 25 < 5 - 25}[/tex]

[tex]\large\textsf{CANCEL out: 25 - 25 because that gives 0}[/tex]

[tex]\large\textsf{KEEP: 5 - 25 because it gives us v or solve for it}[/tex]

[tex]\mathsf{v < 5 - 25}[/tex]

[tex]\mathsf{5 - 25 = -20}[/tex]

[tex]\boxed{\boxed{\large\textsf{Answer: }\mathsf{\bf v < -20}}}\large\checkmark\\\boxed{\boxed{\mathsf{\bf It\ is\ an\ O P E N E D\ circle\ on\ -20\ shaded\ to\ the\ left}}}[/tex]

[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

Zoey takes out a loan of $25,000 to pay for a car. Her interest rate is 3% for 60 months. How much will Zoey pay in total for the car?

Answers

Answer: $28750

Step-by-step explanation:

Since 12 months = 1 year, it should be noted that 60 months = 60/12 = 5 years.

Simple interest = Principal × Rate × Time

= $25000 × 3% × 5

= $25000 × 0.03 × 5

= $3750

The total amount that Joey will pay for the car will be the value of the principal plus the interest which will be:

= $25000 + $3750

= $28750

if a river is 4.2 feet and it dropped 18% percenet what is the depth

Answers

First of all don’t click on that photo and I think the answer is 3.4 don’t come at me if I’m wrong lol

PLS HELP ME WILL MARK BRAINLIEST

Answers

Answer:

LA = 120 sq cm

SA = 132 sq. cm.

Step-by-step explanation:

LA = ph    where p = perimeter of the base and h = the height of prism.

Your base is a triangle.  The third side = [tex]\sqrt{5^{2} - 3^{2} }[/tex] = [tex]\sqrt{25 - 9} = \sqrt{16} = 4[/tex]

Now, the perimeter of the triangle is 3 + 4 + 5 = 12

So, LA = 12(10) = 120 sq cm

The area of the base is the area of a triangle.  A = bh/2 = 4(3)/2 = 6

SA = 2B + LA      where B is the area of the base

SA = 2(6) + 120 = 12 + 120 = 132 sq. cm.

Is the Point (6,3) on the given circle.

(x - 3)2 + (y + 1)2=25

Yes or No?

Answers

no became (x-3) is equalvent

In 1987, a survey of 1000 young people found that 540 said they smoked cigarettes, whilst
460 said they did not. In 2017, a similar survey of another 1000 young people found that
125 said they smoked cigarettes, whilst 875 said they did not.

Calculate the ratio of smokers to non-smokers in 2017. Give your answer in simplest form:
Show your workings.
[2 marks]

Answers

Answer:

1:7

Step-by-step explanation:

125:875

Then simply

The GCF between the two is 125:

125/125 = 1

875/125 = 7

So, the answer is 1:7!

attach a link if needed<3

Answers

Juice: Different

Burritos: Same

Soup: Same

Peanut Butter: Different

What is the domain of the relation? On a coordinate plane, a graph of an image has 3 connected lines. The first line goes from (negative 4, negative 4) to (negative 2, 1). The second line goes from (negative 2, 1) to (1, 1). The third line goes from (1, 1) to (6, 4). There are closed circles at (negative 4, negative 4) and (6, 4).

Answers

Given:

The graph of a relation contains three lines.

The first line goes from (-4,-4) to (-2, 1).

The second line goes from (-2, 1) to (1, 1).

The third line goes from (1, 1) to (6, 4).

There are closed circles at (-4,-4) and (6, 4).

To find:

The domain of the relation.

Solution:

Domain of relation is the set of x-values or the set of input values.

First line is defined from -4 to -2, second line is defined from -2 to 1 and third line is defined from 1 to 6.

There are closed circles at (-4, -4) and (6, 4). It means -4 and -6 are included in the domain.

Since the input values for the given relation is from -4 to 6, where -4 and 6 are included, therefore the domain of the relation is [-4,6].

Answer:

-4

Step-by-step explanation:

1 / 5p= 4

(what’s the correct answer)

Answers

p=20
Hope this helps!

[tex]\frac{1}{5}p = 4[/tex]

Multiply both sides by 5 to isolate p.

p = 4 * 5 = 20

p = 20

1What is the area of the square?
20 square feet
5 feet
10 square feet
25 square feet
5 square feet
Need help asap

Answers

Answer:

25 square feet

Step-by-step explanation:

You would multiply 5 by 5 to get the area.

5 by 5 is 25.

Hope I helped.

Since it’s a square, all sides should be the same length.

In the image it showed one side is 5 feet, so then the other sides should also be 5 feet.

To find the area A = l * w

5 * 5 = 25

The area of the square is 25 square feet.

a blue number cube and a green number cube are rolled.Both number cubes have the number 1 through 6 on them. What is the probability of rolling a number greater than 3 on the blue cube and a number less than 4 on the green cube? ANSWER CORRECTLY FOR 200 points!

Answers

Answer:

We are assuming the numbers 1 - 6 on the cubes?

If so,

Blue (3, 4, 5, or 6) is 4/6 or 2/3 chance

Green(1,3,5) is 3/6 or 1/2 chance

To get both the P is 2/3 times 1/2

Step-by-step explanation:

Approximately what portion of the box is shaded blue?

Answers

Answer:

option a.

1/5 in my opinion.

Write a function with a slope of 4 that includes the point (−1, 3)

Answers

Answer:

I'm not sure but I think the answer is

F(x)=3

The function with a slope of 4 can be written as F(x) = 4x + 7.

What is an equation of the line?

An equation of the line is defined as a linear equation having a degree of one. The equation of the line contains two variables x and y. And the third parameter is the slope of the line which represents the elevation of the line.

The general form of the equation of the line:-

y = mx + c

m = slope

c = y-intercept

Slope = ( y₂ - y₁ ) / ( x₂ - x₁ )

Given that the slope is 4 and the line is passing through the point (-1,3).

The y-intercept will be calculated as,

y = mx + c

3 = 4 x -1 + c

c = 7

The equation can be written as,

y = mx + c

y= 4x + 7

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The circle graph shows the result of a survey of 1500 middle school students.



How many students save their money?

Answers

Answer:

435

Step-by-step explanation:

29% X 1500 = 435

brian, tim and kenny got paid a total of $240 for mowing neighborhood lawns . They split the money in the ratio of 5:9:10 . how much money did each boy make . PLEAEEEE SHOW THE work i’m really struggling rn

Answers

Answer:

$50 for Brian

$90 for Tim

$100 for Kenny

Step-by-step explanation:

Let 5x = amt for Brian

     9x = amt for tim

     10x = amt for ken

5x + 9x + 10x = 240

24x = 240

x = 10

5x = 5(10) = $50 for Brian

9x = 9(10) = $90 for Tim

10x = 10(10) = $100 for Kenny

Answer:

Step-by-step explanation:

5x + 9x + 10x = $240

x = $10

Brian got 5x = $50

Tim got 9x = $90

Kenny got 10x = $100

Help me out here. Math eh not my thing. :P

Answers

Answer:

Question 13 is the third one. Number 15 is the second one.

.............................................................................................

Answers

Answer:.............................................................................................

Step-by-step explanation:

.............................................................................................

WILL GIVE BRAINLIEST IMMEDIATELY!!!!!!!
IF YOU PUT RANDOM NONSENSE ANSWERS OR ADVERTISE SCAM WEBSITES I WILL REPORT YOU AND EMAIL BRAINLY.
4. Consider the circle to the right.
Determine m∠KNY.
SHOW ALL, I REPEAT, ALL STEPS TO BE MARKED BRAINLIEST. I will give brainliest ASAP.

Answers

Answer: Hope this helps  

C. 65 this might be the answre bc of the diamiter.

I REALLY NEED BRAINLIEST!!

I think it is 65 hope this helps and i ne

Step-by-step explanation:

Answer: okay so this is a long process

Step-by-step explanation:

the measure of angle N is 65 degrees because when calculating the angle, it is always half of the arc it makes. K is 30 because the arc it makes is 60 degrees and half of 60 is 30. Y is 45 because half of 90 is 45. All of the inside angles of a triangle add up too 180 degrees. So add 30 to 45 and you would get 75, then subtract 75 from 180 to get 105. So the measure of KNY is 105 degrees.

HELPPPP PLSSSSSSSS(25 points

Answers

-4 would be correct, good luck :)

Evaluate the expression below
(1/7)³

Answers

Answer:

1/49

Step-by-step explanation:

[tex] \purple{ \tt{ \huge{ \: ✨Answer ✨ \: }}}[/tex]

[tex] \: \: \: \: \: \: \: \: \: \: \: \: \red{ \boxed{ \boxed{ \tt{ \huge{{ \: {7}^{ - 3}}}}}}} [/tex]

ANYONE PLS HELP ME IM RUNNING OUT OF TIMEEEEE

Answers

i want to say it’s y=7 because the line would be flat therefore have no slope

Can anyone help me ?

Answers

Answer:

First Option

Step-by-step explanation:

what is the factored form of 3x+24y?​

Answers

Answer:

x+8y

Step-by-step explanation:

common factor it by 3

so the answer is

x+8y

3(x+8y) , is what i got.

Target pays $14.00 for each Halo 4 video game. The selling price is $22.00. What is the percent of markup? Round your answer to the percent.

Answers

Answer:

57%

Step-by-step explanation:

Find the markup percent by dividing the difference in price by the original price, and multiplying it by 100

(8/14) x 100

= 57

So, the percent markup is approximately 57%

Match each probability word to the probability. *Each will be used once*
Impossible 0
Unlikely 7/8
50/50 chance 1/3
Likely 1
Certain 1/2

Answers

Impossible-0
Unlikely-1/3
50/50 Chance-1/2
Likely-7/8
Certain-1

6
Kathryn puts some red, white, blue and pink counters in a bag. She gives the bag to
Clive, who takes a counter out at random, records the colour, and then puts it back
After some time Clive concludes that the probabilities for each colour are
red: 36% white: 34% blue: 3
Kathryn tells him there are fewer than 100 counters in the bag.
Work out how many counters of each of the colours are in the bag.
pink 7/10

Answers

Answer:

I don't get what you saying comment down below

Step-by-step explanation:

Find Q, I'm not sure if it is possible however.

Answers

9514 1404 393

Answer:

  Q ≈ 0.0314148930589 radians ≈ 1.79994078613°

Step-by-step explanation:

There is no algebraic solution for the set of equations with mixed polynomial and trig functions:

  x·sin(Q/2) = 5

  1/2x^2(Q -sin(Q)) = π/12

__

However, we can use the first equation to substitute for x in the second equation. This gives ...

  [tex]\displaystyle \frac{1}{2}\left(\frac{5}{\sin{\frac{Q}{2}}}\right)^2(Q-\sin{Q})=\frac{\pi}{12}[/tex]

This can be simplified using the half-angle identity and recast as a function of Q:

  [tex]\displaystyle f(Q)=\frac{25(Q-\sin{Q})}{1-\cos{Q}}-\frac{\pi}{12}[/tex]

This function will have a zero at the desired value of Q. It can be solved iteratively. A graph shows an approximate value of Q is 0.314 (radians). The value can be refined by Newton's method iteration to give the angle to full calculator precision:

  Q ≈ 0.0314148930589 radians ≈ 1.79994078613°

__

The corresponding value of x is about 318.333447755. In short, this is a very narrow sector/segment in a relatively large circle.

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