Vectors! A ship can sail at 30 km/h in still water. The ship heads due north. The water current is flowing at 10 km/h due east.

a) What is the actual velocity of the ship?

b) What direction does the ship sail in?

Answers

Answer 1

Answer:

a) 31.62 km/hb) 18.4° NE

======================

Given

The speed of the ship = 30 km/h,The speed of the current = 10 km/h

A) Actual velocity is found as the sum of two vectors representing the two velocities.

Since the directions are at 90° (N and E), we will use Pythagorean to find the actual velocity.

[tex]v = \sqrt{30^2+10^2}=\sqrt{1000}= 31.62[/tex] km/h (rounded)

b) Let the direction the ship sails in is x. Use trigonometry to find the angle from the North:

tan x = 10/30tan x = 1/3x = arctan (1/3)x = 18.4° NE

Related Questions

is this proportion or not a meal delivery service cost $10 to sign up ,plus $24.99 each month ASAP

Answers

Answer:

This is not proportional.

Step-by-step explanation:

If there was no meal delivery cost than it would be proportional.

4. Old Faithful, Yellowstone National Park's most famous
geyser, shoots a spray of steam and hot water 50 m
into the air. Is this height greater or less than 5,000 mm?

Answers

Greater because a meter is greater than a millimeter.

Also can I get the brainliest pls?

Work out the area of this circle.
Give your answer in terms of rt and state its units.
6 mm
whats the units?

Answers

The Area of  the circle is 36π mm²

The area the world circle is that the house occupied by the circle during a two-dimensional plane. Also, the house occupied within the boundary/perimeter of a circle is termed the world the world circle. The formula for the world the world circle could be a could be a, wherever r is that the radius of the circle.Area unit is sq. unit, for instance, m², cm², in², etc. space of ​​a circle = πr² or πd² / four in sq. units, wherever wherever = 22/7 or 3.14. Pi (π) is that the magnitude relation between the circumference and diameter of any circle. it's a special mathematical constant.

The circular space formula is beneficial for activity the world occupied by a  field or a circular field. as an example if you've got a circular table, the world formula can facilitate us to understand what quantity material is required to fully cover it.

Radius of a circle = 6 mm

A circle's area is expressed as as A = πr²,

Where,

Radius (r) = 6 mm

Area = π(6)²

= 36π mm²

Hence the Area of the circle is 36π mm².

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NEED ANSWERS ASAP WE NEED IT TOMORROW GRADE SIX MATH


1.What is the difference when ⅓ is subtracted from ¾?

2.The sum of ³/⁷ and ½ is equal to? ___


3.The difference between ⅘ and ¼ is ___

4. The sum of 2¼ and 1³/²⁴ subtracted by 1¾ is ______​

Answers

The fractions are what is different

Robert made 3 more than twice as many baskets as Billy did in the
basketball game.

Answers

The algebraic expressions of the statements are x = 6y - 4 and r = 3 + 2b

How to determine the statement as an algebraic expression?

Statement 1

The statement is given as

Ramona has 4 less than 6 times as many one dollar bills as Rita has

Let the number of one dollar bills owned by Ramona  be x and the number of one dollar bills made by Rita be y

So, the interpretation of the statement is

x = 6y - 4

Hence, the algebraic expression of the statement is x = 6y - 4

Statement 2

The statement is given as

Robert made 3 more than twice as many baskets as Billy did in the basketball game.

Let the number of baskets made by Robert be r and the number of baskets made by billy be b

So, the interpretation of the statement is

r = 3 + 2b

Hence, the algebraic expression of the statement is r = 3 + 2b

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write one hundred sixty-six thousandths in standar form

Answers

0.166 is the standard form of that

If the difference of a number and eight is tripled, the result is six more than the number. Find the number. Round your answer to the nearest integer, if necessary.

Answers

The number that is six less than the product of three and the difference of the number and eight is; 15

How can the required number in the word problem be found?

The verbal expression of the equation in the word problem is presented in mathematical form as follows;

(x - 8) × 3 = x + 6

Expanding the left hand side gives;

3•x - 3×8 = x + 6

3•x - 24 = x + 6

3•x - x = 24 + 6 = 30

2•x = 30

x = 30/2 = 15

The number, x = 15

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3 Choose 1 answer: A B D x = √√√27 x = √18 x = 5 x = 4 6​

Answers

Answer:

the answer is A-x=

Step-by-step explanation:

because if you multiply 3 by 6 you get 27

greg sets his watch for the correct time exactly one week later he finds that his watch 1 1 over 3 minutes it loses time at the same rate for eight weeks write a multiplication expression that describes the sittuation find the product and explain how it is related to the problem?

Answers

The product or overall change in time for 8 weeks will be 29.33 minutes.

What is a statement?

A statement is a declarative sentence that is either true or false but not both. A statement is sometimes called a proposition. The key is that there must be no ambiguity. To be a statement, a sentence must be true or false, and it cannot be both.

Given:

After one week, Greg's watch has lost 11/3 minutes. If the watch continues to lose time at the same rate, we can say that the change in time is 11/3 minutes per week.

According to given question we have

(11/3 minutes/week) x (8 weeks) = 29.33 minutes

     

Therefore, the product or overall change in time for 8 weeks will be 29.33 minutes.

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What is the greatest common factor of 38 and 30?

Answers

The greatest common factor of 38 and 30 is 2.

How to calculate the value?

It should be noted that thw first step to this method of finding the Greatest Common Factor of 30 and 38 is to find and list all the factors of each number.

Let’s take a look at the factors for each of these numbers, 30 and 38:

Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30

Factors of 38: 1, 2, 19, 38

When you compare the two lists of factors, you can see that the common factor(s) are 1, 2. Since 2 is the largest of these common factors, the GCF of 30 and 38 would be 2.

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A toilet manufacturer has decided to come out with a new and improved toilet. The fixed cost for the production of this new toilet line is $16,600 and the variable costs are $67 per toilet. The company expects to sell the toilets for $157. Formulate a function P(x) for the total profit from the production and sale of x toilets.

Answers

The function P(x) for the total profit from the production and sale of x toilets is P(x) = 90x - 16600

How to formulate a function P(x) for the total profit from the production and sale of x toilets?

The given parameters are

Fixed cost = 16600

Variable cost = 67 per toilet

Cost of toilet = 157 per toilet

Let the number of toilets be x

So, the cost function is

C(x) = Fixed cost + Variable cost * Number of toilets

This gives

C(x) = 16600 + 67x

Also, we have the revenue function to be

R(x) = Cost of toilet  * Number of toilets

This gives

R(x) = 157x

The function P(x) for the total profit from the production and sale of x toilets is

P(x) = R(x) - C(x)

So, we have

P(x) = 157x - 16600 - 67x

Evaluate

P(x) = 90x - 16600

Hence, the function P(x) for the total profit from the production and sale of x toilets is P(x) = 90x - 16600

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identify the coefficient, constant, and variable in the expression: - 5 + 8w​

Answers

Answer:

coefficient=8

constant=-5

variable=x

Step-by-step explanation:

Answer:

-5 constant

8 coefficient

w variable

Step-by-step explanation:

On Monday, Saffron bakes
324 pastries in the morning and some more in the
afternoon. She sells 584 pastries. At the end of the
day she has 52 pastries left. How many pastries did
she bake in the afternoon?

Answers

the number of pastries that she bake in the afternoon is equal to 312 pastries.

We are given that:

Saffron sells 584 pastries in the whole day and 52 pastries are left at the end of the day.

Now, we will use addition to find the total number of pastries that is being made in the day.

Total pastries = 584 + 52

Total pastries = 636

Now, she bake 324 pastries in the morning.

So, the number of pastries baked in the afternoon = 636 - 324

In afternoon = 312.

Therefore, we get that the number of pastries that she bake in the afternoon is equal to 312 pastries.

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What are the next two terms in the following sequence? 6, 3, 12, 6, 24.....

Answers

Answer:

12, 48

The pattern is: Divide by 2, then multiply by 4

select two points that lie on the same line throught (0,0), then select an equation that describes the relationship between the coordinates x and y

Answers

Two collinear points on a line are given in the table below:

x, y

0 0 (0,0)

2 1 (2,1)

Select the points that lie on the line. and the relationship between the coordinates x and y.

(4,2)

(4, 3)

(7,2)

4/8, 2/8

Answer:

(4,2) and ([tex]\frac{4}{8}[/tex],[tex]\frac{2}{8}[/tex])  are lie on the line, and y =  [tex]\frac{1}{2}[/tex] x , is showing the relationship of x and y  coordinates of given line.

Given that

The co-ordinates of line is (0,0) and (2,1).

To find

The points that lie on the line, and The relationship between the coordinates x and y.

So, according to the question

We have,

The X and Y co-ordinates of line (0,0) and (2,1).

For finding any point that lie on line, first we have to find the slope of given line,

So, we know that

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

Where,

         x₁ = 0   and x₂ = 2

         y₁ = 0   and y₂ = 1

Now, putting the values, we will get

                         (m) = [tex]\frac{1-0}{2-0}[/tex] = [tex]\frac{1}{2}[/tex]

                           m =  [tex]\frac{1}{2}[/tex]

We know that, the equation of line

     y-y₁ = m(x- x₁ )

     y-0 =  [tex]\frac{1}{2}[/tex] (x- 0)

       y =  [tex]\frac{1}{2}[/tex] x -------------(1)

{ this equation (1) is showing a relationship the coordinates x and y }

For finding which point is lie in that line, this point must be prove that equation (1).

Now, let's check the points

For point (4,2)

y =  [tex]\frac{1}{2}[/tex] x -------------(1)

2 =  [tex]\frac{1}{2}[/tex] × 4

2 = 2

So, point (4,2) lie in this line.

For point (4,3)

y =  [tex]\frac{1}{2}[/tex] x -------------(1)

3 =  [tex]\frac{1}{2}[/tex] × 4

3 ≠ 2

So, point (4,3) not lie in this line.

For point (7,2)

y =  [tex]\frac{1}{2}[/tex] x -------------(1)

2 =  [tex]\frac{1}{2}[/tex] × 7

2 ≠ [tex]\frac{7}{2}[/tex]

So, point (7,2) not lie in this line.

For point ([tex]\frac{4}{8}[/tex],[tex]\frac{2}{8}[/tex])

y =  [tex]\frac{1}{2}[/tex] x -------------(1)

[tex]\frac{2}{8}[/tex] =  [tex]\frac{1}{2}[/tex] × [tex]\frac{4}{8}[/tex]

[tex]\frac{2}{8}[/tex]  = [tex]\frac{2}{8}[/tex]

So, point ([tex]\frac{4}{8}[/tex],[tex]\frac{2}{8}[/tex]) lie in this line.

               

(4,2) and ([tex]\frac{4}{8}[/tex],[tex]\frac{2}{8}[/tex])  are lie on the line, and y =  [tex]\frac{1}{2}[/tex] x , is showing the relationship of x and y  coordinates of given line.

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What is the Area of the Figure?

Answers

Answer: 58 sq ft

Step-by-step explanation:

2 * 2 = 4

9 * 6 = 54

54+4=58

Can somebody please help me I'm trying to find out what 2 + 2 is

Answers

Answer:

2+2 = 4

Step-by-step explanation:

Let's visualize this using # signs

we have two groups of two # signs, so let's map that out

##

##

If you count the individual # signs, it is 4. You can also use this model to figure out 2 *2 (4)

I hope this helps :)

Answer:

4

Step-by-step explanation:

2+2

2+1+1

3+1

4

A superhero recently asked his nemesis how many cats she has. She answered with a riddle: "One-half of my cats plus seven." How many cats does the nemesis have?​

Answers

Answer:

  14

Step-by-step explanation:

You want the number of my cats when that number is "one-half of my cats plus seven".

Setup

Let the number of cats be represented by c. Then the description of the number of cats is ...

  c = c/2 +7

Solution

Multiplying by 2 gives ...

  2c = c +14

  c = 14 . . . . . . . subtract c

The nemesis has 14 cats.


A square acre of land is 5,280 square yards.
Between which two integers is the length of one side?

between 17 and 18 yards

between 72 and 75 yards

between 24 and 243 yards

between 1,320 and 1,321 yards

Answers

By factor decomposition, area of a square and power and root properties, the length of the side is between 72 yards and 76 yards. (Correct choice: B)

What integers are the limits between the length of an equivalent square side of a given area?

The area of a triangle is equal to the square of its side length and the area of land is a composite number, that is, a product of prime numbers. By factor decomposition, the equivalent form of 5,280 square yards is:

5,280 = 2⁵ × 3 × 5 × 11

Then, the equivalent side is equal to the square product of the product:

x = √(2⁵ × 3 × 5 × 11)

x = √(2⁴) × √(2 × 3 × 5 × 11)

x = 2² × √(2 × 3 × 5 × 11)

x = 4√330

As for √330 is between √324 = 18 and √361 = 19, then the length of the side is between 72 yards and 76 yards.

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Factor out the greatest common factor.
3x³-18x² + 12x

Answers

Answer:

x² - 6x + 4

Step-by-step explanation:

Hello!

Factor each term completely:

3x³ = (3)(x)(x)(x)-18x² = (-1)(2)(3)(3)(x)(x)12x = (2)(2)(3)(x)

Common factors that are shown in all 3 terms are x and 3.

Divide each term by 3x:

(3)(x)(x)(x) ÷ 3x = (x)(x) = x²(-1)(2)(3)(3)(x)(x) ÷ 3x = (-1)(2)(3)(x) = -6x(2)(2)(3)(x) ÷ 3x = (2)(2) = 4

Combine the terms: x² - 6x + 4

Is 7.65 greater or less than 7.7

Answers

Answer:

less than

Step-by-step explanation:

Which expression shows the first step in dividing 5x + 3 by x?

Answers

The First step Linear Expression shows is 5+3/x

An algebraic expression known as a linear expression has terms that are either constants or variables raised to the first power. Alternatively put, none of the exponents can be greater than 1. As an illustration, while x is a variable raised to the first power, x2 is a variable raised to the second power. An illustration of a constant is 5.

so when this linear expression 5x + 3 is divided by  x then the first step will be

5 + 3/x

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HELP ME OUT PLEASE!!!!!!!!​

Answers

Answer:

-3

Step-by-step explanation:

Answer:

x-intercepts: (6,0)

y-intercepts: (0,3)

someone please help me out with this need for important grade

Answers

Answer:

6

Step-by-step explanation:

1605 - 75

1530 / 255 = 6

Solve
4x + 8y = 16 for X.

Solve for x

Answers

Answer:

x = 4 - 2y

Step-by-step explanation:

4x + 8y = 16

or, x + 2y = 4

or, x = 4 - 2y

Answer:4-2y

Step-by-step explanation:

Doug says the area of the figure is 20 square units. What is the correct area of
the figure? What mistake might Doug have made?
5 units
5 units

Answers

Answer:

The correct area is 25 square units.

His mistake was that he found the perimeter instead of the area.

Step-by-step explanation:

Area = Length x Width

Area= 5 x 5= 25

His mistake:

Perimeter = length + length + width + width

Perimeter = 5 + 5+ 5+ 5 = 20

Can someone help me get the points I’ll make u brilliant the points are S T R U

Answers

Using translation concepts, the coordinates of the vertices after a rotation 180º clockwise around the origin is:

S': (-4,-10), R'(-4,-3), U'(-8,-3) and T'(-8,-10).

What is a translation?

A translation is represented by a change in the function graph, according to operations such as multiplication or sum/subtraction either in it’s definition or in it’s domain. Examples are shift left/right or bottom/up, vertical or horizontal stretching or compression, and reflections over the x-axis or the y-axis.

For this problem, the coordinates (x,y) of the vertices are given as follows:

S(4,10), R(4,3), U(8,3), T(8,10).

The rule for a rotation 180º clockwise around the origin is:

(x,y) -> (-x,-y).

Hence the vertices of the rotated image will be given as follows, applying the above rule:

S': (-4,-10), R'(-4,-3), U'(-8,-3) and T'(-8,-10).

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1/3 divided by 3/5 = 1/3 divided by M. What is M. I came up with 3/5

Answers

Answer:

Yes you are correct

Step-by-step explanation:

1/3 / 3/5 = 1/3 / M

3*1/3 / 5*3/5 = 3*1/3 / 5M

3/3 / 15/5 = 3/3 / 5M

1/3=1/(5M)

5M * 1/3 = 1

5M * 3 * 1/3 = 1 * 3

5M=3

M=3/5 √

what is the solution to -3/8x-11=4

Answers

Answer: -40

Step-by-step explanation:

Answer:

-1/40

Step-by-step explanation:

-3/8x -11+11=4+11

-3/8x=15

-3/8x x=15x

-3/8=15x

15x/15= -3/8/15

x=-1/40

Hope this helps!^^

Being... Great.... might be 78?! nah she prolly not im jk

Answers

Answer:

B.

Step-by-step explanation:

233% = 2.33

2 2/3 = 2.6

All work and the answer is provided in the screenshot that is attached! :)

Have a great day!

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