A plane takes off from an airport on the bearing S 29°W. It continues for 20 minutes then changes to bearing S 52°W and flies for 2 hours 20 minutes on this course then lands at a second airport. If the plane's speed is 420 mph, how far from the first airport is the second airport? Round to the nearest mile.
A. 1011 mi
B. 1111 mi
C. 1010 mi
D. 1110 mi

Answers

Answer 1

Answer: 1110 miles

Step-by-step explanation:

Given that :

Speed (V) = 420 mph

t1 = 20 minutes = 20/60 = 0.3333 hour

t2 = 2 hours 20 minutes = 2.333 hours

Distance = speed * time

d1 = 420 * 0.333 = 140 miles

d2 = 420 * 2.33333 = 979.98 = 980 miles

Using cosine rule :

x = sqrt(d1² + d2² - 2(d1 * d2) cos 157

x = sqrt(140^2 + 980^2 - 2(140 * 980) cos157

x = sqrt(1232586.5)

x = 1110.2191

x = 1110 miles

A Plane Takes Off From An Airport On The Bearing S 29W. It Continues For 20 Minutes Then Changes To Bearing

Related Questions

Write an equation for the graph below which represents a logarithmic function f with base 2 or 3 translated and/or reflected. X=3 (7,1) (5,0) (4,-1)

Answers

Answer:

The answer is "[tex]\log(x-3)- \log(2)[/tex]"

Step-by-step explanation:

The asymptote is that when the group is 0 within. Let's all assume that log base 2 is: Log(ax-b); a position mostly online also they know. Let's use this (5,0)  and log(5a-b)=0; they get out of it 5a-b=1; now that the results for a and b must be known. So we can say unless the asymptote is x=3, 3a-b=0; then we have the equations system, and with a and b we can solve

[tex]\to b=5a-1 \\\\ \therefore\\\\\to 3a-(5a-1)=0\\\\\to 3a-5a+1=0\\\\\to -2a+1=0\\\\\to -2a=-1\\\\\to a=\frac{1}{2} \ and\ b= \frac{3}{2}[/tex]

[tex]\to \log(\frac{x}{2}-\frac{3}{2})\\\\\to \log(\frac{(x-3)}{2})\\\\\to \log(x-3)- \log(2)[/tex]

Is d=2t portional or non portional?

Answers

Yes it is portional

Factor the expression given below. Write each factor as a polynomial in descending order 9x2-1

Answers

The factored expression of 9x^2 - 1 is (3x -1)(3x + 1)

How to factor the polynomial?

The polynomial expression is given as:

9x^2 - 1

Express 9x^2 as a perfect square

(3x)^2 - 1

Apply the difference of two squares

(3x -1)(3x + 1)

Hence, the factored expression of 9x^2 - 1 is (3x -1)(3x + 1)

Read more about factoring at:

https://brainly.com/question/19386208

#SPJ1

Craig likes to collect vinyl records. Last year he had 10 records in his collection. Now he has 12 records. What is the percent increase of his collection.

Please answer with explanation.

Answers

Answer:

Craig's collection increased by 20%.

Step-by-step explanation:

Original amount: 10

New amount: 12

To find the percent increase, we first need to find how much Craig's record collection increased by. To do this, subtract the old amount from the new amount:

12 - 10 = 2

The amount his collection increased by is 2. To find the per cent increase, divide 2 by the original amount of records:

[tex]\frac{2}{10}=\frac{1}{5}= 0.20[/tex]

Convert the decimal into a percentage:

0.20 * 100 = 20%

The percent increase of Craig's record collection is 20%.

Help ASAP Please with this math problem. Just look at the picture. ​

Answers

[tex] {( \sqrt{9)} }^{2} [/tex]

[tex] ={3}^{2} [/tex]

[tex] = 9[/tex]

[tex] {9}^ \frac{1}{2} [/tex]

[tex] = ({3}^{2} ) ^{ \frac{1}{2} } [/tex]

[tex] = 3 ^{1} [/tex]

[tex] = 3[/tex]

Find the 2nd Derivative:
f(x) = 3x⁴ + 2x² - 8x + 4

Answers

Answer:

[tex]f''(x)=36x^2+4[/tex]

Step-by-step explanation:

Let's start by finding the first derivative of [tex]f(x)= 3x^4+2x^2-8x+4[/tex]. We can do so by using the power rule for derivatives.

The power rule states that:

[tex]\frac{d}{dx} (x^n) = n \times x^n^-^1[/tex]

This means that if you are taking the derivative of a function with powers, you can bring the power down and multiply it with the coefficient, then reduce the power by 1.

Another rule that we need to note is that the derivative of a constant is 0.

Let's apply the power rule to the function f(x).

[tex]\frac{d}{dx} (3x^4+2x^2-8x+4)[/tex]

Bring the exponent down and multiply it with the coefficient. Then, reduce the power by 1.

[tex]\frac{d}{dx} (3x^4+2x^2-8x+4) = ((4)3x^4^-^1+(2)2x^2^-^1-(1)8x^1^-^1+(0)4)[/tex]

Simplify the equation.

[tex]\frac{d}{dx} (3x^4+2x^2-8x+4) = (12x^3+4x^1-8x^0+0)[/tex] [tex]\frac{d}{dx} (3x^4+2x^2-8x+4) = (12x^3+4x-8(1)+0)[/tex] [tex]\frac{d}{dx} (3x^4+2x^2-8x+4) = (12x^3+4x-8)[/tex][tex]f'(x)=12x^3+4x-8[/tex]

Now, this is only the first derivative of the function f(x). Let's find the second derivative by applying the power rule once again, but this time to the first derivative, f'(x).

[tex]\frac{d}{d} (f'x) = \frac{d}{dx} (12x^3+4x-8)[/tex] [tex]\frac{d}{dx} (12x^3+4x-8) = ((3)12x^3^-^1 + (1)4x^1^-^1 - (0)8)[/tex]

Simplify the equation.

[tex]\frac{d}{dx} (12x^3+4x-8) = (36x^2 + 4x^0 - 0)[/tex] [tex]\frac{d}{dx} (12x^3+4x-8) = (36x^2 + 4(1) - 0)[/tex] [tex]\frac{d}{dx} (12x^3+4x-8) = (36x^2 + 4 )[/tex]

Therefore, this is the 2nd derivative of the function f(x).

We can say that: [tex]f''(x)=36x^2+4[/tex]

Answer:

[tex]y = f(x) = 3 {x}^{4} + 2 {x}^{2} - 8x + 4 \\ \frac{dy}{dx} = 12 {x}^{3} + 4x - 8 \\ \frac{d {}^{2} y}{dx {}^{2} } = 36 {x}^{2} + 4 \\ \boxed{\frac{d {}^{2} y}{dx {}^{2} } = 4(9 {x}^{2} + 1)}[/tex]

f"(x)= 4(9x^2+1)

Find two postive numbers such that the ratio of the two numbers is 5 to 3 and the product of the two numbers is 540.

Answers

Answer:

337.5 and also 202.5

Step-by-step explanation:

do 8x = 540 since 5 and 3 are in a ratio... so you get 5x plus 3x. Then you solve for x and get 67.5..67.5 times 3 is 202.5 and 67.5 times 5 is 337.5.

Answer:

[tex]lets \: number \: to \: be \: 5x \: and \: 3x \\ a.c \: \: \: \: \: (5x) \times (3x) = 540 \\ 15 {x}^{2} = 540 \\ {x}^{2} = \frac{540}{15} \\ {x}^{2} = 36 \\ x = \sqrt{36} \\ x = 6 \\ so \: number \: will \: be \\ 5x = 5 \times 6 = 30 \\ 3x = 3 \times 6 = 18 \\ [/tex]mark it as a Breallent answer and like

A car travels 180 miles in 3 hours, which is a rate of miles per hour.

Answers

Answer:

540

Step-by-step explanation:

multiply 180 by 3

I need help with this ​

Answers

Answer:

The missing value in the ordered pair is 6.

Step-by-step explanation:

Given that:

The ordered pairs are (-1, 3) and (x,-7)

We have to find the missing value x so that the ordered pairs have a slope -2.

Slope is the steepness of a line which is denoted by m.

Slope =m= -2

Here,

[tex]x_1=-1, y_1=3\\\\x_2=x, y_2=-7[/tex]

Slope is given by;

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

Putting the given values,

[tex]-2=\frac{-7-3}{x-(-1)}\\-2=\frac{-10}{x+1}\\-2(x+1)=-10\\-2x-2=-10\\-2x=-10-2\\-2x=-12[/tex]

Dividing both sides by -2

[tex]\frac{-2x}{-2}=\frac{-12}{-2}\\x=6[/tex]

Hence,

The missing value in the ordered pair is 6.

Need help on algebra b1
b-8 -53

Answers

Feed:

i would recommend you to put the correct statement of the question so people can understand it better but from what i get your trying to ask is that : b-8-53

Step-by-step explanation:

well i dont get what your trying to say or ask

Every 100 pounds on Earth are equivalent to 38 pounds on Mars.A boy weighs 60 pounds on Earth how much would he weigh on Mars

Answers

Answer:

22.8 pounds

Step-by-step explanation:

The answer is 22.8 because when you divide 100 by 38 you get 2.63157894737 and if you divide 60 by 2.63157894737 you get 22.8

Dana and Steven read the same book with 60 pages. Dana read 1/4 of the book in 3/10 hour. Steven read 1/5 of the book in 1/6 hour. Which statement is true?

Answers

Answer: Steven read more pages per minute than Dana

Step-by-step explanation:

the smallest three digit whole number ending with 9 ​

Answers

Answer:

769

Step-by-step explanation:

Answer:

109

Step-by-step explanation:

please answer this. i’ve asked 3 questions of this same thing bc people don’t even answer them, i’ll give brainliest to whoever answers correctly. i’m failing and really need this answered

1. A wave has a wavelength of 5 m and a frequency of 2 Hz. At what speed/velocity does the
wave travel?

2. The speed/velocity of a wave on a guitar string is 100m/s and the frequency is 1,000 Hz. What
is the wavelength of the wave?

3. If the speed/velocity of a wave is 25 m/s and the wavelength is 5 m, what is the frequency of
this wave?

Answers

We will be using the formula: Speed = Wavelength * Frequency

1. Given:  Wavelength = 5 m     and     Frequency = 2 Hz

Speed of the wave = Wavelength * Frequency

Speed of the wave = 5 * 2

Speed of the wave = 10 m/s

__________________________________________________________

2. Given: Speed of the wave = 100 m/s   and    Frequency= 1000 Hz

Wavelength = Speed / Frequency

Wavelength = 100 / 1000

Wavelength = 0.1 m

__________________________________________________________

3. Given: Speed of the Wave = 25 m/s           Wavelength = 5 m

Frequency = Speed / Wavelength

Frequency = 25 / 5

Frequency = 5 Hz

Help now pleaseee
The ratio of blue marbles to red marbles in a bag is 2:3. In the same bag, the ratio of blue marbles to yellow marbles is 1.1. Which of the following statements is true?

There are less yellow marbles than blue marbles

There are less yellow marbles than red marbles

There are less blue marbles that yellow marbles

There are less red marbles than blue marbles

Answers

Answer:

There are less yellow than red

Step-by-step explanation:

2/3 = .6666666 blue to red

1/1 = 1 blue to yellow

I’m so confused, please help

Answers

I think is D

PLEASE MARK ME AS BRAINLIEST

Matthew is competing in a race. He runs 20 kilometers in 2 hours. At the rate given how many kilometers can Matthew run in 1 hour?

Answers

Answer:

Mattew would run 10 kilometers in 1 hour

Step-by-step explanation:

20/2  = 10 Kilometers

2/2 = 1 hour

2x^2+3x=(2x-1)(x+1)
Pls do explain

Answers

Answer:

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

Step-by-step explanation:

You could solve this problem by either: Factoring or by using the Quadratic Formula.

SOLVING BY FACTORING STEPS

STEP 1: Move (2x−1)(x+1) to the left side of the equation by subtracting it from both sides.

[tex]2x^2+3x-(2x-1)(x+1)=0[/tex]

STEP 2: Simplify 2x^2+3x−(2x−1)(x+1).

[tex]2x+1=0[/tex]

STEP 3: Simplify each term.

[tex]2x^2+3x-2x^2-x+1=0[/tex]

STEP 4: Simplify by adding terms.

[tex]2x+1=0[/tex]

STEP 5: Subtract 1 from both sides of the equation.

[tex]2x=-1[/tex]

STEP 6: Divide each term by 2 and simplify.

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

SOLVE BY USING THE QUADRATIC FORMULA STEPS

STEP 1: Move all terms to the left side of the equation and simplify.

[tex]2x+1=0[/tex]

STEP 2: Subtract 1 from both sides of the equation.

[tex]2x=-1[/tex]

STEP 3: Divide each term by 2 and simplify.

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

X= -1/2 hope this helps hehe :)

3y(2y+5) solve the problem

Answers

3y×(2y+5)

Multiply each term in the parentheses by 3y

3y×2y+3y×5

Calculate the product

6y²+3y×5

Now we do the same thing only different way

3y×2y

Multiply the numbers

6y×y

If  a term doesn't have an exponent , it is considered that the exponent is 1

6y^1×y^1

Multiply the terms with the same base by adding their exponents

6y^1+1

add the numbers

6y²

6y^2+3y×5×

calculate the product

6y²+15y

It's the same thing only different way ok

3y×5

Multiply the numbers

15y

answer: 6y²+15y

PLEASE MARK ME AS BRAINLIEST

expand and simplify (3c+4)(5+2c)

Answers

Answer:

6c(square)+23c+20

Step-by-step explanation:

15c+6c(square)+20+8c=6c(square)+23c+20

I need help answering the second one. please i really need to pass my final and this is extra credit.
Karl is a basketball player whose height is 76in. His team’s mean height is 79.5 in.
a) What is Karl’s z-score?
b) What percent of players in the team are shorter than Karl?

Answers

It’s A because I did this before thanks for points hdhjjsdjdj

What does the point (0, 0) mean in this situation?

Answers

It’s undefined because division by zero is an undefined operation.

Answer:

at 0 hours, 0 miles were traveled

Ethan’s water bottle is 1/2 full. Olivia’s water bottle is 2/6 full. Who has a more filled water bottle?

Answers

Answer:

Ethan's

Step-by-step explanation:

Ethan's is 1/2 and Olivia's simplified to be 1/3.

Ethan needs only 2 to have a full bottle and Olivia need 3 to have a full bottle.

Zoey had 3/4 of a pizza left after going to a local restaurant last night. Today she eats 1/3 of the remaining pizza for lunch. How much of the original pizza does Zoey have left now?

Answers

Answer:

half of the pizza is left

Step-by-step explanation:

1 ) three quarters are left = 75% of the original pizza

2) she eats one third of the pizza = 1/3 of 75

3) one third of the pizza is 25 %

4) 75-25 = 50

5) 50 is half of the pizza

a map is drawn using a scale of 1cm/80mi
two cities are 280 miles apart.
how far apart are the cities on the map?

A. 4.5 mi
B. 3.5 cm
C. 3.5 mi
D. 4.5 cm​

Answers

Answer:

B) 3.5cm

Step-by-step explanation:

1/80 = n/280

1 * 280 = n * 80

280 = 80n

3.5 = n or n = 3.5

PLEASE HELP!!! The half life of carbon-11 is 20 minutes. A sample of carbon-11 has
25mCi. How much is left after 1 hour?*
A)12.5mci
B)10.2mCi
C)2.25mci
D)3.125mci

Answers

Answer:

3.125 (D)

Step-by-step explanation:

1 is 1/2

25-1 4

20x3 = 60mins

3.125 would be took away results end with what you have took for this equation

Please help me help me!! PLS

Answers

Its 13 ik this because i just took the test!

Answer:

m

Step-by-step explanation:

What is an expression that is equivalent to 5x

Answers

25x^2 squared maybe?
5x + 5x^0
If im wrong then I’m sorry, I hope I’m right and you get a good grade or score or etc

The sum of three non-negative numbers is 36, and one of the numbers is twice one of the other numbers. What is the maximum value of the product of these three numbers?

Answers

Answer: 726.

Step-by-step explanation:

we have:

a, b and c non-negative numbers.

we know that:

a + b + c = 36.

(i also assume that the numbers are whole numbers)

and "one of the numbers is twice one of the others"

Then we can write:

a = 2*b

replacing that in the above equation, we get:

2*b + b + c = 36

3*b + c = 36.

Then the product between the 3 numbers will be:

P = a*b*c = (2*b)*b*c = 2*b^2*c.

Because we have b squared in the product, we want to find the maximum possible value of b, such that:

3*b + c = 36.

3*b = 36 - c

We know that 36 is a multiple of 3, and also is 3*b.

Then 36 - c must also be a multiple of 3, this means that c must be a multiple of 3 (and the smallest possible), which is 3.

Then if we have:

3*b = 36 - 3 = 33

3*b = 33

b = 33/3 = 11.

The prodct will be:

P = 2*(11^2)*3 = 726.

The maximum value of the product of the three given numbers is;

P_max  = 726

Let the three non-negative numbers be x, y and z

We are told that they sum up to 36.

Thus;

x + y + z = 36.

Now, one of the numbers is twice one of the other numbers.

Thus;

x = 2y

Then, we now have;

2y + y + z = 36

⇒ 3y + z = 36.

We want to find the maximum value of the  product between the 3 numbers. Let's say their product is P, then we have;

P = xyz

P = 2y²z

Since y is squared here, then let's make 3y the subject in 3y + z = 36.

3y + z = 36.

3y = 36 - z

since 3 is multiplied by y, it means that  36 - z be a multiple of 3 and we can infer that z must also be a multiple of 3. If we take z = 3, we have;

Then if we have:

3y = 36 - 3

3y = 33

y = 33/3

y = 11.

Since Product is P = 2y²z, then we have;

P = 2 × 11² × 3

P_max  = 726

Read more at; https://brainly.com/question/10385705

Write an expression:

The temperature today was 10 degrees colder then twice(times two) yesterday’s temperature “t”

Answers

Answer:   T=10-2 x y

Step-by-step explanation: that is the reason

2t minus 10, you multiply t by 2 then subtract ten from that
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