a plane can fly 3750 km in 3 hours with the wind. the plane takes 5 hours to travel the same distance aganist the same wind speed. find the rate of the plane in still air. find the speed of the wind

The probability that no more than 75 of passengers in the sample have a balcony is given as follows:

0%.

The z-score of a measure X of a variable that has mean symbolized by [tex]\mu[/tex] and standard deviation symbolized by [tex]\sigma[/tex] is obtained by the rule presented as follows:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The parameters of the binomial distribution are given as follows:

n = 1000, p = 1200/(4300 + 1200 + 2100) = 0.158.

Hence the mean and the standard deviation for the normal approximation are given as follows:

Using continuity correction, the probability that no more than 75 of passengers in the sample have a balcony is P(X < 75.5), which is the p-value of Z when X = 75.5, hence:

Z = (75.5 - 158)/11.5

Z = -7.17

Z = -7.17 has a p-value of 0.

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No, finding half of a number is not the same as dividing a number by ½. When finding half of a number, the result is the number divided by 2. When dividing a number by ½, the result is the number multiplied by 2.

When finding half of a number, the result is the number divided by 2.

For example, if we want to find half of the number 8, we would divide 8 by 2 to get 4.

When dividing a number by ½, the result is the number multiplied by 2.

For example, if we want to divide the number 8 by ½, we would multiply 8 by 2 to get 16.

No, finding half of a number is not the same as dividing a number by ½. When finding half of a number, the result is the number divided by 2. When dividing a number by ½, the result is the number multiplied by 2.

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The expression which is to be subtracted as calculated from the data given is found out to be as , 0.22.

The coordinates of the parallelogram as mentioned in the question is , R(-4, -3), S(-5, 1), T(4, 3), U(5, -1)

Therefore, the length of the sides as measured using distance formula is found out to be as,

RS = 4.1231, RT = 10 , ST = 9.2195 , SU = 10.198 ,TU = 4.1231 and  UR = 9.2195.

Now as we know that 2 sides of a parallelogram are parallel , therefore,

RS || TU and ST || UR.

RS(slope) = (1 - (-3))/(-5 - (-4)) = -4

and the ,

ST(slope)= (3 - 1)/(4 - (-5)) = 2/9

Hence , to find the line perpendicular to ST is given by ,

y - 1 = -9/2×(x - (-5))

y = -9x/2 - 43/2

The equation of RS = y - (-3) = 1/4×(x - (-4)) = x/4 + 1

y = x/4 - 2

Their point of interaction is , -9x/2 - 43/2  =  x/4 - 2

x = -78/19

y = -115/38

Side of rectangle  = 4.1245

width of the rectangle = 0.1085

Therefore, the expression can be subtracted from the area of the rectangle to find the area of parallelogram RSTU = 1/2 × 4.1245 × 0.1085

= 0.22.

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Answer:

The percent mass composition of zinc in the brass sample is:

(mass of zinc / total mass of sample) x 100%

(4.21 g / 12.00 g) x 100% = 35.08% zinc

So the brass sample contains 35.08% zinc by mass.

To find the percent mass composition of copper in the sample, you can use the information that the sample is made of copper and zinc only, so you can use the difference between 100% and the percent zinc:

100% - 35.08% = 64.92% copper

So the brass sample contains 64.92% copper by mass.

A function's midline is the horizontal line positioned exactly halfway between its maximum and minimum values.

Trigonometric ratios are based on the side ratio of a right-angled triangle and consist of the values of all trigonometric functions. The ratios of the sides to any acute angle in a right-angled triangle are the trigonometric ratios of that angle. You can use trigonometric ratios to determine the lengths of one (or both) of the acute angles of a right triangle if you know the lengths of its two sides.

given

A function's midline is the horizontal line positioned exactly halfway between its maximum and minimum values.

The midline is the line y = 0 for y = sin (the horizontal axis). The difference between the highest and smallest values of a function is half its amplitude.

The amplitude of the y = sin function is 1.

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No, the absolute value of a number is always non-negative, meaning it is greater than or equal to zero, but it is not always equal to zero.

The absolute value of a number represents the distance of that number from 0 on the number line and a number can be positive or negative.

For example, the absolute value of 5 is 5, which is greater than zero. The absolute value of -5 is also 5, which is also greater than zero. The only time the absolute value of a number is equal to zero is when the number is zero, |0| = 0.

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The angular velocity is 0.14 rad/sec.

The velocity of the Ferris wheel if it becomes disengaged from the motor and rolls away is 17.44 ft/sec.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

Diameter of the Ferris wheel = 250 feet

The radius of the Ferris wheel = 125 feet

Now,

The linear velocity v = wr

Where w is the angular velocity.

The angular velocity.

w = v/r

The linear velocity v.

v = 2πr/T

v = (2 x 3.14 x 125) / 45

v = 17.44 ft/sec

The angular velocity.

w = v / r

w = 17.44/125

w = 0.14 rad/sec

Thus,

Angular velocity is 0.14 rad/sec.

The velocity of the Ferris wheel after disengaging from the motor is

17.44 ft/sec.

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Assume that x represents the window's rectangular portion's width and y represents the window's rectangular portion's height. The width of the rectangular component of the window is equal to the diameter of the semicircle portion since the semicircle with diameter d is atop the window, or x = d.

x = circle diameter = window width

r = x/2 and y = window height

We'll now solve for the window's perimeter. The top section of the rectangular window is not included since it is continuous with the semicircular component of the window, therefore the perimeter of the rectangle portion is x + 2y, and the perimeter of the circular portion is x/2 (which is half the circumference of a circle).

hence:

P = x2y + πx/2 = 2r + 2y + πr

We will now find a solution for the light that passes through the window. Assuming that transparent glass transmits one light per square inch, tinted glass transmits just one light per square inch.

The area of the rectangle component multiplied by the clear glass light constant, or 1*2ry = 2ry, will determine the rectangular light. The semicircular component will be equal to (1/4)*r2/2, which is the tinted glass light constant multiplied by half the area of a circle. Hence,

L = 2ry + πr2/8

Isolating y from the perimeter equation now will allow us to enter that value of y into the light equation.

L = r(P - r(2 + )) + r2/8 y = (P - r(2 + ))/2

P is a constant, hence the only variables in the light equation are  We can differentiate L with respect to r (i.e. dL/dr) and solve for when dL/dr = 0 to find the point at which the light transmitted is at a maximum.

dL/dr = P - 2r(2 + π) + πr/4

0 = P - 2r(2 + π) + πr/4

r = 4P/(16 + 7π)

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When the parallel lines are cut by a transversal, the values for the measurement of ∠2 and ∠4 is 124° each.

What are parallel lines?

Two lines in the same plane that are equally spaced apart and never cross each other are said to be parallel lines in geometry. Both horizontal and vertical shapes are possible.

Examples of parallel lines can be found everywhere, including zebra crossings, rows of notebooks, and the nearby railroad tracks.

In the given diagram the parallel lines are cut by a transversal.

The measure of angle 5 is, m∠5 = 56°.

It is known that each pair of interior angles on the same side of a transversal that cuts two parallel lines are supplementary, or they add up to 180 degrees.

So, m∠5 + m∠2 = 180°

56° + m∠2 = 180°

m∠2 = 180° - 56°

m∠2 = 124°

Now, as it can be seen in the image ∠2 and ∠4 are vertically opposite angles.

So, they will be congruent or equal to each other.

So, it is obtained that -

m∠2 = m∠4

m∠4 = 124°

Therefore, the measures of angles are m∠2 = 99° and m∠4 = 99°.

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The number of solutions which the system of equations has is: A. no solution.

Mathematically, the point-slope form of a straight line can be calculated by using this mathematical expression:

y - y₁ = m(x - x₁) or y - y₁ = (y₂ - y₁)/(x₂ - x₁)(x - x₁)

Where:

At data point (0, 3), a linear equation of the first line can be calculated in slope-intercept form as follows:

y - y₁ = (y₂ - y₁)/(x₂ - x₁)(x - x₁)

y - 3 = (4 - 3)/(3 - 0)(x - 0)

y = 1/3(x - 0) + 3

y = x/3 + 3

For the second line, we have:

y - y₁ = (y₂ - y₁)/(x₂ - x₁)(x - x₁)

y + 2 = (-1 + 2)/(3 - 0)(x - 0)

y + 2 = x/3

y = x/3 - 2

In conclusion, we can logically deduce that the given system of linear equations has no solution because it represents parallel lines.

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There are 65900 square centimetres present in a backyard garden that has an area of 6.59 square meters.

Scientific notation is the way through which a very small or a very large number can be written in shorthand. In scientific notations when a number is between 1 and 10s, it is multiplied by a power of 10.

For example, 6,500,000,000,000 can be written as 6.5 × 10¹².

To calculate a square meter value to the related value in cm², just multiply the quantity in m² by 10000 (the conversion factor). Here is the formula for it:

Value in cm² = value in m² × 10000

We need to convert 6.59 m² into cm². Using the conversion formula above, we will get:

Value in cm² = 6.59 × 10000 = 65900 cm²

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Answer: x = 83°

Step-by-step explanation:

First, a straight line is equal to 180°.

      180° - 126° = 54°

Next, a triangle's internal angles add up to 180°.

      54° + 43° + x = 180°

With this given equation, we can solve for x.

Given:

      54° + 43° + x = 180°

Combine like terms:

      97° + x = 180°

Subtract 97 degrees from both sides of the equation:

      x = 83°

Consequently, a football field measuring 120 yards long and 50 yards wide has an area of 5016.76 m2.

An object's surface area is a measurement of the total volume of space that it occupies. The entire region surrounding a three-dimensional shape is referred to as its surface area. Its surface area is the total area of a three-dimensional shape. By adding the surfaces of each of a cuboid's six rectangular sides, one may determine the cuboid's surface area. The box's dimensions could also be named using the following formula: Surface (SA) = 2lw + 2lh + 2hw. A three-dimensional shape's surface area is a measurement of the total area it occupies (a three-dimensional shape is a shape that has height, width, and depth).

given

You are required to bring the area in this instance in m2, however the length (120 yd) and breadth (50 yard) are given in yd.

The unit must then be changed into m2. The rectangle's area formula should be length * width.

So, the equation should be:

area = length * width=  (50yd * 91.44cm/yd * 1m/100cm) * (120yd * 91.44cm/yd * 1m/100cm)

= 5016.76 m2

Consequently, a football field measuring 120 yards long and 50 yards wide has an area of 5016.76 m2.

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Answer:

An absolute value function is a function in algebra where the variable is inside the absolute value bars. This function is also known as the modulus function and the most commonly used form of the absolute value function is f(x) = |x|, where x is a real number.

Answer: 1 moles KI = 166.00277 gram using the molecular weight calculator and the molar mass of KI.

Step-by-step explanation

Answer was found by using the molecular weight calculator and the molar mass of KI.

Hope this helps :)

The deviations of the data values as calculated form the data given in the question is found out to be as 1698.

The formula to calculate the mean is ,

mean = fixi / n

Therefore ,

mean =  93+172+109+119+54+164+143 / 7  = 861/7 = 731.42

Now, to calculate the standard deviation,

= √∑ (fx)²/ n

he value of  y²  as calculated is found out to be as ,

y² =  10190.

Therefore, SD = √(10190)²/ 7=  38.1

Now , variance is equal to the square of the standard deviation ,

or variance  = ∑  ( y)² / n-1

=  10190 / ( 7-1)

= 10190 /6

= 1698.

The sum of these deviation thus , is not zero.

The variance is defined as the expectation of a random variable's squared departure from its mean value, and it is used to determine how far a set of values is spread out from its mean.

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Answer: 390 Km

Step-by-step explanation: Use the Pythagorean Theorem to solve this problem. We know that it is going north and west, forming a triangle. It says a straight line so we know it is the hypotenuse. 360^2 + 150^2 = x^2. X is 390.

Answer:

Step-by-step explanation: the area of the shape is the length times width or base times height. It's our length is 12 Are with this eight. And when you multiply 12 times eight, we get 96 feet squared, which is the area of our rectangle. I think its a rectangle.

So the first time between 4:00 and 5:00 that the minute and hour hands of the clock are perpendicular to each other to the nearest second is 4:06.

The minute hand of a clock moves 360 degrees in 60 minutes, or 6 degrees per minute.

The hour hand moves 360 degrees in 12 hours, or 30 degrees in 1 hour, or 30 degrees in 60 minutes, or 0.5 degrees per minute.

At 4:00, the minute hand is pointing straight up (12 o'clock), and the hour hand is pointing at 4 o'clock.

To find the first time that the hands are perpendicular, we need to find the first time that the difference between the angle of the minute hand and the angle of the hour hand is 90 degrees.

We know that the minute hand moves 6 degrees per minute and the hour hand moves 0.5 degrees per minute, so for every minute that passes, the angle between the hands increases by 5.5 degrees.

Each consecutive hour has 30 degrees in between, so angle between 12 and 4 is

4×30 = 120°

So,

At 4:00 the angle between the hands is

120°

At x minutes after 4, the angle is

120 - 5.5x

So to solve for x when angle is 90°

120 - 5.5x = 90

x = 30/ 5.5

x = 5.45 minutes

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Answer: 2m+4

Step-by-step explanation:

To simplify, we need to combine "like terms", which means terms that are similar in that it is either just a number or a coefficient and variable. In this case, 3m and -m are like terms, and -6, 2, and 8 are like terms.

Now, we can combine.

-6 + 3m + 2 -m + 8

-4 + 3m - m + 8

4 + 3m - m

4 + 2m (also can be written as 2m + 4)

hope this helps!

Answer:

yes

Step-by-step explanation:

Answer:

19 tables, f(19) = $280

1 table, f(1) = $33

Step-by-step explanation:

Let f(x) be the money Serenity makes each day, where x is the number of tables she serves.

Her saily income includes a fixed injcome of $20/day, plus $13/table in tips.

We can write f(x) = $20 + $13x

When x = 19, f(19) = $280

When x = 1, f(1) = $33

If the length of the given rectangle is increasing by 3 in/sec and the width is shrinking at 5 in/sec then the rate of change of its perimeter is 4 in/sec.

Length, L = 9 inches

Width, W = 5 inches

The perimeter of the rectangle is

P = 2L + 2W.

By Differentiating both sides with respect to time t, we get

dP ⁄ dt = 2 × dL ⁄ dt  + 2 × dW ⁄ dt

From the given conditions,

dL ⁄ dt = 3 and dW ⁄ dt = -5

So at the moment when L = 9 and W = 5,

dP ⁄ dt = (2)(3) + 2(−5 )

= 6 - 10

= -4

Therefore, The perimeter of the rectangle is decreasing at a rate of 4 in ⁄ sec.

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The value of the equation is x=20.

What is equation?

The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions. For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign.

Here the given equation is

=> 2(x-5)=9-3x+6+8+3x+7

Now simplify the equation for x then

=> 2x-10 = 30-3x+3x

=> 2x-10=30

=> 2x=30+10

=> 2x=40

=> x=20

Hence the value of the equation is x=20.

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The main difference between an equation and an inequality is in an equation the elements are equal but in an inequality the elements are compared.

A relationship between two expressions or values that are not equal to each other is called inequality.

An equation has an answer that equals a number. An inequality has an answer that could be less than or more than or less than or equal to or more than or equal to.

For example:  You have some money in your pocket. You want to buy some snacks for tonight's match, but your wife told you to buy one pizza on your way back to home that costs $10. That means that on snacks you can spend (y) :

y ≤ x - 10     where x represents money in your pocket.

This means that from money in your pocket you have to subtract $10 for pizza and out of the remaining money you can spend some part of it on snacks or all of it.

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Answer: 1750 calories

Step-by-step explanation:

[tex]\frac{700calories}{12oz} * 30 oz = 1750 calories[/tex]

Answer:

Step-by-step explanation:

hi

Answer:

Step-by-step explanation:

hi

The volume of the parallelepiped with adjacent edges PQ, PR, and PS     is V=4  

Given three vectors, there is a product, called scalar triple product, that gives (the absolute value of it), the volume of the parallelepiped that has the three vectors as dimensions.

So

PQ=(-2-2,1-3,0-2)=(-4,-2,-2)

PR=(-2-1,-1-4,0+1)=(-3,-5,1)

PS=(-2-3,1-6,0-1)=(-5,-5,-1)

The scalar triple product is given by the determinant of the matrix (3×3)

that has in the rows the three components of the three vectors:

|-4 -2 -2|

|-3 -5 +1|

|-5 -5 -1|

and the determinant is given for example with the Laplace rule choosing the first row:

a(ad-bc)-b(ad-bc)+c(ad-bc)

=-4[(−5)(−1)−(1)(−5)]−(−2)[(−3)(−1)−(1)⋅(-5)]+(−2)[(−3)(−5)−(−5)(-5)]

=-4[5+5]+2[8]-2[-10]

-4(10)+16+20

=-40+36

V=-4

So the volume is: V=|−4|=4

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1 and 2 are the factors of 2.

2 is a prime number, it has only two factors, 1 and 2. Also, we also know that the factors of 2 are the exact divisors of that number. There is another way to represent the factors of any number, by arranging the number of objects.

It is the only number when added and multiplied to itself brings the same result, 4. Factors of 2 can be positive and negative as well.

Prime factors of 2, and factors of 2 in pairs along with solved examples for a better understanding. Factors of 2 are all the numbers which on multiplying give the result of 2.

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