The Goodyear blimp flies 153 miles with a tailwind (with the wind) in the same time it travels 57 miles with a headwind (against the wind). If the speed of the wind is 16 mph, what is the speed of the blimp in still air?

Answers

Answer 1

Using the relation between velocity, distance and time, it is found that the speed of the blimp in still air is of 35 mph.

What is the relation between velocity, distance and time?

Velocity is distance divided by time, that is:

[tex]v = \frac{d}{t}[/tex]

153 miles with a tailwind (with the wind), that is, with a velocity of v + 16, so:

[tex]v + 16 = \frac{153}{t}[/tex]

[tex](v + 16)t = 153[/tex]

[tex]t = \frac{153}{v + 16}[/tex]

57 miles with a headwind (against the wind), that is, with a velocity of v - 16, hence:

[tex]v - 16 = \frac{57}{t}[/tex]

[tex](v - 16)t = 57[/tex]

[tex]t = \frac{57}{v - 16}[/tex]

Since the times are equal, we have that:

[tex]\frac{153}{v + 16} = \frac{57}{v - 16}[/tex]

153(v - 16) = 57(v + 16)

96v = 3360

v = 3360/96

v = 35.

The speed of the blimp in still air is of 35 mph.

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Related Questions



What is the domain of the function shown in the mapping?

{x|x= -5, -3,1,2,6)

fuly = -9,-6,0,2,4}

fx|x = -9, -6, -5, -3,0,1,2,4,6}

tyly = -9, -6, -5, -3,0,1,2,4,6}

Mark this and return

Save and Exit

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Answers

*see attachment for the diagrambifbthe mapping

Answer:

{x | x = –5, –3, 1, 2, 6}

Step-by-step explanation:

The domain of a function includes all input values entered in the oval for input, while the range includes all the values in the output oval.

From the mapping given in the attachment, we have the following possible values of the function in the input oval as: -5, -3, 1, 2, 6.

These x-values make up the domain of the function, and represented as: {x | x = –5, –3, 1, 2, 6}

Write an equation in slope intercept form of the line that passes through the points (-5,4) and (5,0)

Answers

Answer: y=-0.4x+2

Step-by-step explanation:

If two platters of sandwiches serves 12 people at a party, how many platters will you
need if 96 people show up?

Answers

Answer:

8 platters

Step-by-step explanation:

16 platters because 12 divided by 2 is 6 and 96 divided by 6 is 16 :)

NEED HELP ASAP WILL GIVE BRAINLY IF CORRECT 20 POINTS

Answers

The answer is the second one

Answer:

5x-2y=-33

First.) -5x+10x= 5x

Second.) -5y+3y= -2y

Third.) -30+-3= -33

:) Hope you enjoy this :)

Write the equation of the line that passes through the points (3,-3) and (3,8). Put
your answer in fully simplified point-slope form, unless it is a vertical or horizontal
line.

Answers

The equation of the line is the vertical line x = 3.

The gradient of the line

The gradient of the line between two points (x₁, y₁) and (x₂, y₂) is m = (y₂ - y₁)/(x₂ - x₁).

Since the line passes through the points (3,-3) and (3,8),  

(x₁, y₁) = (3,-3) and (x₂, y₂) = (3,8).

So, substituting the values of the variables into the equation, we have

m = (y₂ - y₁)/(x₂ - x₁).

m = (8 - (-3))/(3 - 3).

m = (8 + 3)/0

m = 11/0

m = +∞

Equation of the line in point-slope form

The equation of the line passing through the point (x₁, y₁) in point-slope form is given by

y - y₁ = m(x - x₁) where

m = gradient = +∞ and (x₁, y₁) = (3, -3)

So, substituting the values of the variables into the equation, we have

y - y₁ = m(x - x₁)

y - (-3) = +∞(x - 3)

y + 3 = +∞(x - 3)

y + 3/+∞ = (x - 3)

0 = x - 3

x = 3

So, the equation of the line is the vertical line x = 3.

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Waheed's father is twelve years older than his mother. The sum of their ages is 76 years old. How old is Weheed's father​

Answers

Answer:

32

Step-by-step explanation:

Let, the age of father and mother be x and y respectively. then,

According to question,

x + y = 76.........(i)

x= y + 12...............(ii)

Now,

x + y = 76

or, ( y + 12) + y = 76

or, y + 12 + y = 76

or, 2y = 76 – 12

or, 2y = 64

or, y = 64/2

.

. . y = 32

hope it will help you.

Which of the following properties would NOT be used to justify any of the steps in solving the equation below?
72n=3n+4
2(72n)=2(3n+4)
7n=6n+8
7n−6n=6n+8−6n
n=8
A.Subtraction Property of Equality
B.Multiplication Property of Equality
C.Distributive Property
D.Zero Product Property

Answers

Given:

The equation is

[tex]\dfrac{7}{2}n=3n+4[/tex]

To find:

The properties which is not used from the given options.

Solution:

We have,

[tex]\dfrac{7}{2}n=3n+4[/tex]

Using Multiplication Property of Equality, multiply both sides by 2.

[tex]2(\dfrac{7}{2}n)=2(3n+4)[/tex]

[tex]7n=6n+8[/tex]                    (Distributive Property)

Using Subtraction Property of Equality, subtract 6n from both sides.

[tex]7n-6n=6n+8-6n[/tex]

[tex]n=8[/tex]

From the given options only one property is not used, i.e., Zero Product Property.

Therefore, the correct option is D.

-4 (w+1) = -24

What does w equal?

Answers

Answer:5

Step-by-step explanation:

24/4=6

6-1=5

Answer:

w = 5

Step-by-step explanation:

-4 (w+1) = -24

-4w -4 = -24    | +4

-4w = -20        | :(-4)

w = 5

1. A student grew crystals for science class. This table gives the height of the largest crystal every day for 7 days. The table can be modeled using an exponential function.

Days 2 4 6 8 10 12 14
Height (cm) 2.55 4.25 7.25 12.25 20.65 34.95 59.05
What function best represents the data?
y=1.5·1.3x
y=1.5·0.5x
y=0.59x
y=2.17+0.59x

Will Give Brainiest <3

Answers

Answer:

  (a)  y = 1.5·1.3^x

Step-by-step explanation:

Growth is modeled by an exponential function when the base is greater than 1.

There is only one answer choice that models growth. The others all have a base (0.5 or 0.59) that is less than 1, so model decay.

  y = 1.5·1.3^x

120 as a product of primes

Answers

Answer: 2 x 2 x 2 x 3 x 5

Step-by-step explanation:

Hope this helps. Those are all primes that equal 120.

If your height and the length of your shadow are the same, what can you say about the angle of elevation of the sun?

Answers

Answer:

A. 90°

Step-by-step explanation:

The angle of elevation is the angle between the horizontal line and the line connecting you and the sun.

Since the line is vertical the angle between them is right angle.

Correct choice is A.

Amelia needs to buy some dog food.At the nearest store,6 bags of dog food cost $34.50. How much would Amelia would spend on 5 bags of dog food

Answers

Answer: The answer would be $28.75

Step-by-step explanation: You would first wanna see how much one bag of dog food costs by dividing 34.50 by 6. Then you can muiltiply how much one bag of dog food costs by 5 to see how much Amelia would spend.

9.8x+17=7.6x-16
??????​

Answers

Q: What is 9.8x+17=7.6x-16?

A: Your answer should be 2.8867, I tried the best I could.

Answer:

x= -15

Step-by-step explanation:

You subtract 7.6 from 9.8

then you left with 2.2x+17=-16

Subtract 17 from -16 ( -33 )

Then you'll divide 2.2 and -33

x= -15

Use -b/2a to find the axis of symmetry equation and the vertex g(x) = x^2-5x

Answers

Answer:

Axis of symmetry (-b/2a)= -2.5 or -5/2

Vertex- (2.5, -6.25) or (-5/2, -25/4)

Step-by-step explanation:

Find the AOS= -(-5)/2(1)= 2.5

Find the vertex= (2.5)^2 - 5(2.5)= -6.25

Find the length of the base of the triangle given the area of 217 ft and the hight of 24 ft

Answers

Answer:

18.0833 ft

Step-by-step explanation:

[tex]area=\frac{bh}{2}[/tex] where b is the base and h is the height

[tex]217=\frac{24h}{2}[/tex]

[tex]434=24h[/tex]

[tex]h=18.0833[/tex]

Circumference of Circle
Geometry

Answers

Answer:

the equation for the circumerence of a circle is    pi R squared

Step-by-step explanation:

here the radius is 28

So it would be pi 28squared

so i think it would be 784pi

volume equals length times width times height v=lwh
solve the equation for l

Answers

Answer:

[tex]\frac{V}{wh}=l[/tex]

Step-by-step explanation:

Equation: [tex]V=lwh[/tex]

1). [tex]\frac{V}{wh}=\frac{lwh}{wh}[/tex]

2). [tex]\frac{V}{wh}=l[/tex]

y = 4x^3– 20x^2+ 25x

Answers

Answer:

0 2/5 By zeros

Step-by-step explanation:

Samantha Ran 10x-9 Miles and Sam ran 9x-10 miles WHATS the difference

Answers

Answer:

10x-9-(9x-10)

=10x-9-9x+10

=10x-9x+10-9

=x+1

Answer:x+1

Step-by-step explanation:

Find the difference between
and
4/9 and -5/9

Answers

Answer:

1

Step-by-step explanation:

4/9 and -5/9 are 1 apart. This is because one of the numbers is positive and the other is negative, you have to make the negative number positive and add the two positive numbers together. In this case, 4/9+5/9=9/9. 9/9 is equivalent to 1. So, 4/9 and -5/9 are 1 apart.

Hope the explanation and answer helps!

Answer: -5/9 is negative, 4/9 is positive. The Difference when you subtract =1

Step-by-step explanation:

4/9 - -5/9 = 4/9 +5/9 = 1

(Subtracting negative = adding positive)

need help serious answer thanks !

Answers

Answer:

a + 55 =180

a=180-55=125

b = 55 alternate angles

c=a=125 alternate angles

e =125. alternate angles

f=b=55

h=f=55 alternate angles

Step-by-step explanation:

(a) < a = 180-55= 125

(b) < b = 180- 125= 55

(c) < c = 189- 55 = 135

(d) < e = 125

(e) < f = 180-125= 55

(f) < h = 55

~

< a and < c are vertical angles.

< a and < b are adjacent angles.

< b and <h are Alternate interior angles.

< f and 55° are Alternate Exterior angles.

< a and < e are corresponding angles.

~

Which inequality is true when x = 0. 5 and y = 5?
A. 4xy > 11.5
B. 9y + x > 45.5
C. y - 2x < 3
D. 7xy < 18

Answers

Answer:

D. [tex]7xy# < 18[/tex]

Step-by-step explanation:

[tex]4(0.5)(5) > 11.5[/tex] [tex]10 > 11.5[/tex] which is not true

[tex]9(5)+0.5 > 45.5[/tex]  [tex]45.5 > 45.5[/tex] which is not true (they are equal)

[tex]5-2(0.5) < 3[/tex] [tex]4 < 3[/tex] which is not true

[tex]7(0.5)(5) < 18[/tex]  [tex]17.5 < 18[/tex] which is true so the answer is D

Five is less than or equal to the difference of twice a number n and 3.
6

Answers

Answer:

5 ≤ 2n - 3.6

Step-by-step explanation:

Five is less than or equal to the difference of twice a number n and 3.6

Five is less than or equal to:  5 ≤

twice a number n:  2n

difference of twice a number n and 3.6:  2n - 3.6

Therefore,

5 ≤ 2n - 3.6

Number is n

Twice a number means multiplication

2n

Difference means subtraction

2n-3

The expression becomes

5<=2n-3

What is the value of c?

Answers

Answer:

c=9

Step-by-step explanation:

it’s because from the angles, you can see that this is an isosceles triangle, there the two sides have to be the same.

I need help on this ASAP

Answers

Statements - reasons :-

<1~= <5 - Corresponding Angles Theorem

<1 ~= <7 - Alternate Exterior Angles Theorem

<5 ~=<7 - Vertical Angles Theorem

line I || line m - Transitive Property

150°, 130°, 130°, 150°, 140°, 140°, 150°, 130°, and d. What is d?

Answers

Answer:

130

Step-by-step explanation:

This most likely goes in a pattern

150

130

130

150

140

140

150

130

d (130)

e (150)

Answer:

130 degrees

Step-by-step explanation:

It's a pattern so first is 150 the 130 2x and then 150 again and now 140 2x. Starts over 150 again and 130 2x

Find the value of angle marked x​

Answers

Based on the given diagram we see that all the exterior angle is in a straight line with the interior angle.

Using the known angle measure, we know that the shape has angles of measure, 123 degrees, 94 degrees,  79 degrees, and '180 - x' degrees

Also, the sum of all the angles in a quadrilateral, any four-sided shape, is 360 degrees.

Now using the knowledge gained lets set up the equation

            [tex]123 + 94 + 79 + 180 - x = 360\\476 - x = 360\\-x = -116\\x = 116[/tex]

Therefore x is 116 degrees.

Hope that helps!

Now select point C and move it around. Do you observe any change in the relationship between the three angles?

Answers

Answer:

No. <BAC and <CAD remain congruent, and m<DAB is still the sum of m<BAC and m<CAD

Step-by-step explanation:

Answer:

No. ∠BAC and ∠CAD remain congruent, and m∠DAB is still the sum of m∠BAC and m∠CAD.

Step-by-step explanation:

Find the equation of the line below?

Answers

Answer:

y = 1/2x + 1/2

Step-by-step explanation:

first list a few points to find the slope

(1,1) (3, 2)

y2 - y1/x2 - x1

2 - 1/3 - 1

1/2

y = 1/2x + b

to find the slope use a point you didnt use yet (since its tricky to find the intercept looking at the graph)

(-1, 0)

0 = 1/2(-1) + b

0 = -1/2 + b

b = 1/ 2

lets check:

point: (-3, -1)

y = 1/2x + 1/2

-1 = 1/2(-3) + 1/2 ?

-1 = -3/2 + 1/2 ?

-1 = -1

Answer:

Slope intercept form;

y = mx + b

If we look at the graph, we can see the line intercepts with y axis at around 0.5, so 0.5 is our y - intercept.

If we look at the slope it rises 1/2

Though we can double check by using two points of the line:-

Δy     y2 - y1

___= ______

Δx      x2 - x1

One point of the line, (1,1)

Second point of the line, (3,2)

Plug it into the formula:

2 - 1          1

____ =  ____, 1/2 is the slope

3 - 1          2

Now we use it in our equation;

y = 1/2x + 0.5

The solutions to 15(2a – 2) = 5(a2 – 1) are: a = 1, a = –1 a = 5, a = –1 a = 5, a = 1

Answers

The solution to the provided expression using the difference of square formula of algebra is a=1.

What is the difference of squares formula?

The difference of square says, the difference of the square of two terms is equal to the product of their sum and difference. It can be given as,

a^2-b^2=(a+b)(a-b)

The given expression in the problem is,

[tex]15(2a - 2) = 5(a^2 -1)[/tex]

From the property of difference of square, the above equation can be written as,

[tex]15(2a - 2) = 5[(a +1)(a-1)]\\15\times[2(a - 1)] = 5[(a +1)(a-1)][/tex]

Divide both side of the equation with (a-1) as,

[tex]5\times2 = 5(a +1)[/tex]

Divide both side of the equation with number 5 as,

[tex]2 = (a +1)\\a=2-1\\a=1[/tex]

Hence, the solution to the provided expression using the difference of square method of algebra is a=1.

Learn more about the difference of square here;

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The solutions to 15(2a – 2) = 5(a2 – 1) are:

a = 1, a = –1

a = 5, a = –1

a = 5, a = 1

Answer:

C. a = 5, a = 1

Step-by-step explanation:

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