A plane travels at a constant speed. It takes 7 hours to travel 3,780 miles. What is the plane’s speed in miles per hour.

Answer:

A) 1500 girls

B) 25% are men

Step-by-step explanation:

I hope this helps

Answer:

Multiply it you will get it its simple

Step-by-step explanation:

Yes,  This is established by the Rank-Nullity Theorem, A counter-example would be a transformation that is not linear.

Yes, all linear transformations have a matrix representation. The theorem that establishes this is the Matrix Representation Theorem. This theorem states that given a linear transformation T : V → W where V and W are vector spaces over a field F, then there is a unique matrix A such that T(v) = Av for any v in V. This theorem proves that any linear transformation can be represented by a matrix.

A counter-example of a linear transformation that does not have a matrix representation is a transformation that maps a vector in one vector space to a vector in a different vector space. For example, if V is a vector space over the field F, and W is a vector space over another field K, then the linear transformation T : V → W does not have a matrix representation since the size of the matrix would need to be different for each vector in the different vector spaces.

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Answer:

\(g=\frac{\sqrt{(6+T)(6-T)} }{T}\)

Step-by-step explanation:

I hope this helps!! <3

Answer:

5.44 meters

Step-by-step explanation:

We Know

0.3048 meter = 1 ft

How many ft makes a height of 1.66m?

We Take

1.66 ÷ 0.3048 ≈ 5.44 meters

So, the answer is 5.44 meters.

Answer:

100r^4 + 400r^3 + 600r^2 + 400r + 100

Step-by-step explanation:

Expanding ( r + 1 )^4 gives :-

r^4 + 4r^3 + 6r^2 + 4r + 1

So multiplying 100 with r^4 + 4r^3 + 6r^2 + 4r + 1 gives :-

100r^4 + 400r^3 + 600r^2 + 400r + 100

Answer:

The answer to the question provided is 30.

Step-by-step explanation:

\(5x - 80 + 2x + 50 = 180 \\ 7x - 30 = 180 \\ \frac{ \: \: \: \: \: \: + 30 = + 30}{ \frac{7x}{7} = \frac{210}{7} } \\ x = 30\)

[I apologize if the answer to the question is inaccurate]

Answer: 30

Step-by-step explanation:

Answer: This is so because, the circle does not totally cover the area defined by the four squares and this is evident in the workings below.

The area of a square is; Area = l²

Since each circle has area, A = 1 square unit.

Therefore,

Length of Each side of each square = 1 unit

This in turn is the radius of the circle given;

The area of the circle is therefore, Area = πr²

Area = (22/7) × 1²

Area = 3.142 square units

In essence, the area of the circle is less than 4 square units.

THIS IS NOT FORM ME I FOUND THIS FORM adioabiola

Step-by-step explanation:

The margin of error is defined as follows:

M = 1.9z/sqrt(n).

In which:

The bounds of the confidence interval are given as follows:

\(\overline{x} \pm z\frac{\sigma}{\sqrt{n}}\)

In which:

The margin of error is then given as follows:

\(M = z\frac{\sigma}{\sqrt{n}}\)

The problem is incomplete, hence the general procedure to obtain the sample size was presented.

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Answer:

z = 3/31

Step-by-step explanation:

5z + 3 = 36z

subtract 5z on both sides

3 = 31z

divide by 31 on both sides

z = 3/31

Answer:

1.45 L

Step-by-step explanation:

Step-by-step explanation:

when we give a function an actual value as argument, we are using the variable(s) in the functional definition as intended : as placeholders for actual values.

so, we only need to replace any occurrence of the variable by the actual value and calculate.

a.

zero items are produced means x = 0.

C(0) = 10×0 + 900 = $900

fixed cost = $900

b.

making 25 items means x = 25.

C(25) = 10×25 + 900 = 250 + 900 = $1,150

c.

the domain is the interval or set of all valid values for x.

the range is the interval or set of all valid values for y (the functional result).

now, the maximum cost allowed is $1900.

how many items are that ?

1900 = 10x + 900

1000 = 10x

x = 100

so, the domain is

0 <= x <= 100

the range is

$900 <= y <= $1900

Answer:

It could be 0, is the question multiple choice?

a horizontal line always has a slope of 0, now, for the sake of a silly proof, let's do some rigamarole to get it.

to get the equation of any straight line, we simply need two points off of it, let's use those two in the picture below

\((\stackrel{x_1}{-3}~,~\stackrel{y_1}{7})\qquad (\stackrel{x_2}{7}~,~\stackrel{y_2}{7}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{\textit{\large rise}} {\stackrel{y_2}{7}-\stackrel{y1}{7}}}{\underset{\textit{\large run}} {\underset{x_2}{7}-\underset{x_1}{(-3)}}} \implies \cfrac{0}{7 +3} \implies \cfrac{ 0 }{ 10 } \implies \stackrel{ }{\text{\LARGE 0}}\)

Answer:

0

Step-by-step explanation:

-2 * -2 = 4

4  * 2 = 8

4 * -2 = -8 + 16 = 8

8-8 = 0

Answer:

= − 11

Step-by-step explanation:

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

Explanation:

If there were 7 boys and 5 girls, then we'd have the ratio of 7:5. The boys are listed first because of how your teacher mentions boys first to set up the ratio. The order is important. That means 7:5 is different from 5:7.

With 7 boys and 5 girls, we see that there are 7-5 = 2 more boys compared to girls, and not 8. The jump from 2 to 8 is "times 4", which means we'll need to multiply each gender count by 4 to get to the class size we want

boys: 7 ---> 7*4 = 28

girls: 5 ---> 5*4 = 20

Having 28 boys and 20 girls will lead to the ratio 28:20, and it reduces fully to 7:5 when we divide both parts by the GCF 4.

The total number of students is 28+20 = 48

-----------------

Here's another way we can solve.

x = number of girls

x+8 = number of boys, since there are 8 more

The ratio of boys to girls is 7:5, meaning,

(number of boys)/(number of girls) = 7/5

(x+8)/x = 7/5

(x+8)*5 = x*7 .... cross multiply

5x+40 = 7x

40 = 7x-5x

40 = 2x

2x = 40

x = 40/2

x = 20

There are x = 20 girls and x+8 = 20+8 = 28 boys. So 20+48 = 48 total.

Answer:

Step-by-step explanation:

f(x) = 2x2 − 12x + 24

      = 2(x^2 - 6x) + 24

      = 2[(x - 3)^2 - 9) + 24

      = 2(x - 3)^2 - 18 + 24

      = 2(x - 3)^2 + 6

- so the minimum cost is 6

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Answer:

D

Step-by-step explanation:

Answer: -26/15

Step-by-step explanation:

8+7 cause f(x) is 8

The solution is Option A.

The coordinate of the triangle after the translation is given by A' ( 0 , -3 ) with 4 units right and 4 units down

A translation moves a shape up, down, or from side to side, but it has no effect on its appearance. A transformation is an example of translation. A transformation is a method of changing a shape's size or position. Every point in the shape is translated in the same direction by the same amount.

Given data ,

Let the coordinate of the triangle be represented as A

Now , the coordinate A = A ( -4 , 1 )

Now , the coordinate of the triangle after translation is A' ( 0 , -3 )

when there is a translation of the coordinate A by 4 units to the right , we get

A to 4 units right = A ( -4 + 4 , 1 )

The new coordinate of A = A ( 0 ,  1 )

Now , A to 4 units down , we get

The coordinate of A' = A' ( 0 , 1 - 4 )

The coordinate of A' = A' ( 0 , -3 )

Hence , the translated coordinate is A' ( 0 , -3 )

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Based on the limited information provided, it is not possible to definitively determine the type of economy in Country A. More specific details and factors would be necessary to make a conclusive determination.

Answer:

\(x = \frac{4}{3} \)

__o__o__

\(y = \frac{10}{3} \)

__o__o__

\(y = 8\)

Step-by-step explanation:

y= 2

\(y = x + \frac{2}{3} \\ 2 = x + \frac{2}{3} \\ x = 2 - \frac{2}{3} \\ \\ x = \frac{6 }{3} - \frac{2}{3} \\ \\ x = \frac{4}{3} \)

__o__o__

\(x = \frac{8}{3} \)

\(y = x + \frac{2}{3} \\ \\ y = \frac{8}{3} + \frac{2}{3} = \frac{10}{3} \)

__o__o__

\(x = \frac{22}{3} \)

\(y = x + \frac{2}{3} \\ \\ y = \frac{22}{3} + \frac{2}{3} = \frac{24}{3 } = 8\)

Answer:

Choice D

Step-by-step explanation:

Multiply the scalar into the matrix

3*2

3*-1

The first matrix becomes

6

-3

6     -    0

-3         =1.5

We are subtracting a negative so it is like adding

6     +   0

-3     +   1.5

6

-1.5

Choice D

Answer:

4th option

Step-by-step explanation:

3 \(\left[\begin{array}{ccc}2\\-1\\\end{array}\right]\)  - \(\left[\begin{array}{ccc}0\\-1.5\\\end{array}\right]\) ← multiply the components of the first matrix by 3

= \(\left[\begin{array}{ccc}6\\-3\\\end{array}\right]\) - \(\left[\begin{array}{ccc}0\\-1.5\\\end{array}\right]\) ← subtract corresponding components

= \(\left[\begin{array}{ccc}6-0\\-3-(-1.5)\\\end{array}\right]\)

= \(\left[\begin{array}{ccc}6\\-3+1.5\\\end{array}\right]\)

= \(\left[\begin{array}{ccc}6\\-1.5\\\end{array}\right]\)

Answer:

The rate of change is 28.

Step-by-step explanation:

The equation is in slope-intercept form,  y = mx + b, where m is the slope, and b is the y-intercept.

Answer:

\(Red = 29\)

Step-by-step explanation:

Given

\(Total = 60\)

\(Purple = 11\)

\(Green = 20\)

Required

Number of red marbles, without counting

To do this, we simply subtract the sum of the purple and red marbled from the total marbles.

So, we have:

\(Red = Total - (Purple + Green)\)

\(Red = 60 - (11 + 20)\)

\(Red = 60 - 31\)

\(Red = 29\)