Which ratios have a unit rate greater than 1? Choose ALL that apply.
9
8
9/5
5
-
miles: hour
6
miles: 3 hours
4)
1
4 miles: 3 hours
3
7 miles:
34
hour
121-1/4
2 miles : 3 hours
1
3
318
mile: 2 hours

Answer: A. -2.2 B. -2.7

Step-by-step explanation: To find the rate of change is y2-y1/x2-x1.

For A y2=184.3, y1=140.3 x2=0 and x1=20. 184.3-140.3 will give you 44. 0-20 is -20. So 44 divided by -20 is -2.7.

For B its the same thing: y2=109.3, y1=28.3, x2=30, and x1=60. 109.3-28.3 is 81 and 30-60 is -30. 81 divided by -30 is -2.7.

The range of the graph is 0 <= y <= 12

The graph represents the given parameter

On the graph, we have the following observations

Minimum y value = 0

Maximum y value = 12

The range of the graph is represented as

Minimum y value <= y <= Maximum y value

So, we have

0 <= y <= 12

Hence, the range of the graph is 0 <= y <= 12

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Volume of baseball is 1.24 times greater than volume of tennis ball.

We are given the diameter of baseball and tennis ball. So, firstly we will calculate the volume of tennis ball and baseball.

Volume of ball = 4/3πr³, where r stands for radius of ball.

Taking value of π as 3.14.

Volume of tennis ball = 4/3×π×2.7³

Volume of tennis ball = 82.4 m³

Volume of baseball = 4/3×π×2.9³

Volume of baseball = 102.1 m³

Now, finding the number of times volume of baseball is greater than volume of tennis ball.

Comparison -  volume of baseball ÷ volume of tennis ball

Comparison - 102.1 ÷ 82.4

Comparison - 1.24

Hence, volume of baseball is 1.24 times of volume of tennis ball.

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The new cost function for downloading data is as follows:

C(x) = { 14.50x if 0 <= x < 2

           20.50x if 2 <= x < 5

           24.60x if x >= 5 }

Option D is correct.

Here, we have, the new cost function for downloading data based on the given conditions.

If 0 <= x < 2 gigabytes:

The original cost function is C(x) = 12x.

After raising the rate by $2.50, the new cost function for this range becomes C₁(x) = (12+ 2.50)x = 14.50x.

If x >= 2 gigabytes:

The original cost function is C(x) = 18x.

After raising the rate by $2.50, the new cost function for this range becomes C₂(x) = 18x + 2.50x = 20.50x.

If x >= 5 gigabytes (20% more):

The original cost function is C(x) = 18x.

After raising the rate by $2.50 and charging 20% more, the new cost function for this range becomes C₃(x) = [1.20 * (18+ 2.50)]x = 24.60x.

Now, we need to combine these functions to get a single function for the new rates:

For 0 <= x < 2 gigabytes: C(x) = C₁(x) = 14.50x

For 2 <= x < 5 gigabytes: C(x) = C₂(x) = 20.50x

For x >= 5 gigabytes: C(x) = C₃(x) = 24.60x

So, the new cost function for downloading data is as follows:

C(x) = { 14.50x if 0 <= x < 2

           20.50x if 2 <= x < 5

           24.60x if x >= 5 }

Option D is correct.

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Δp≥5.2755∗10−25ms−1

According to the Heisenberg uncertainty principle, we have

δx∗δp≥ℏ2

Since Δx=1angstrom=10−10m,

Δp≥6.626∗10−344∗3.14∗10−10

Δp≥5.2755∗10−25ms−1

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The length of the hypotenuse c is 6

The given parameters are

Legs = a and b

Hypotenuse = c

a = 2√3

c = 2b

Make b the subject in c = 2b

b = 1/2c

By Pythagoras theorem, we have:

c^2 = a^2 + b^2

This gives

c^2 = (2√3)^2 + (1/2c)^2

Evaluate the exponents

c^2 = 12 + 1/4c^2

Evaluate the like terms

1/3c^2 = 12

This gives

c^2 = 36

Take the square roots

c = 6

Hence, the length of the hypotenuse c is 6

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The required value of y is 21.

What is the constant of proportion?

A constant of proportion is illustrated as the ratio which relates two given quantities with each other in the relationship of proportion. Constant of proportion is also called constant variation, rate of change, and constant ratio.

Solving for the value of y

let k be a constant of proportion

When a quantity varies directly with others, then we have a relation, y = kx,      —-- 1

Now, find k for given x = 3 and y = 7, we need to put these values in equation 1, i.e.

7 = k(3)

k = 7/3

k = 7/3

Further calculate y for given x = 6 and constant of proportion = 7/3 i.e.

y = (9)(7/3)

y = 21

Hence, the required value of y is 21.

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Answer:

11/61

Step-by-step explanation:

Cos is equal to Adjacent over hypotenuse

For angle B, the adjacent side is side BC which is 11 units long

the hypotenuse is 61

11/61

Interior angles in triangles are all equal to 180 degrees. A triangle's angles are equal to the sum of the angles at each of its three vertices. The sides of the triangle are 35cm, 21cm, and 42cm.

Due to the fact that one outside angle of a triangle is equal to the sum of its other two angles, all of its angles add up to 180 degrees. In other words, the third angle must be added to the other two angles in the triangle (the ones that add up to generate the outer angle) to form a 180-degree angle.

The perimeter of the triangle = 98cm

The ratio of the 3 sides is 5: 3: 6

Take it as 5x, 3x, 6x

where, x is the scaling factor

5x + 3x + 6x = 98

simplifying the above variables, we get

14x = 98

x = 7

The sides of the triangle are

5x = 5 × 7 = 35 cm

3x = 3 × 7 = 21 cm

6x = 6 × 7 = 42 cm

Therefore, the sides of the triangle exists 35 cm, 21 cm and 42 cm.

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Using basic mathematical operations such as addition and subtraction, they purchase 2054 more books for Oak Hill than Elm Street and Woodland combined.

Elm Street = 4,432 books

Oak Hill = 12,398 books

Woodland = 5,912 books

Using addition, we can determine how many books are purchased for Elm Street and Woodland combined by adding their values.

Elm Street + Woodland

4,432 + 5,912 = 10,344

Using subtraction, determine how many more books did they purchase for Oak Hill than Elm Street and Woodland combined.

Oak Hill - (Elm Street + Woodland)

12,398 - 10,344 = 2054 books

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The distance from B to E is 4/3 when wall AB covered in a mirror.

The virtual image created by reflection in a plane mirror is the mirror image of an object or two-dimensional figure; it is the same size as the original but different, unless the object or figure has reflection symmetry.

Angle ∠1 = Angle ∠2

So Triangle ADC = Triangle EBD

A line of reflection is required to accomplish a geometry reflection; the two figures' consequent orientations are opposing. Comparable distances separate the corresponding regions of the figures from the line of reflection. Ordered pair rules appear on the x-axis as (x, -y), the y-axis as (-x, y), and the line y=x as follows (y, x).

tan ADC = AC / AD

= 2/3

tan EBD = BE/BD

= x/2

if Triangle ADC = Triangle EBD

than AC / AD = BE / BD

2/3 = x/2

x = 4/3

Thus , when wall AB is covered in mirrors, the distance from B to E is 4/3.For point E see the attachment below -

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Answer: 70º

Step-by-step explanation: isosceles triangle (2 equal sides) means 2 equal angles

Answer:

Hi,
Answer 111

Step-by-step explanation:

This shape (a kite) has an axis of horizontal symmetry

When an angle exists encircled by a circle, its measure exists equivalent to the intercepted arc's measure divided by two. The measure of m DH is 162.

The arc that is inside the inscribed angle and whose endpoints are on the angle is known as the intercepted arc. Anywhere on the circle that the sides of an inscribed angle intersect to produce an intercepted arc can serve as the angle's vertex.

Angles with vertices on a circle and that cross an arc on the circle are said to be inscribed angles. Half of the intercepted arc's length and half of the central angle's length intersecting that same arc make up the measure of an inscribed angle. Congruent inscribed angles are those that intersect the same arc.

According to the Inscribed Angle Theorem, an inscribed angle's measure is equal to half of its intercepted arc's measure. Congruent inscribed angles are those that intersect the same arc.

An angle's measure is equal to the intercepted arc's measure divided by two when it is surrounded by a circle.

m DH = 2(m ∠F) = 162

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The slope of the line  through each pair of points (0,0) and (2,6) is 3.

The increase divided by the run, or the ratio of the rise to the run, is how a line's slope is calculated. It gives information about the line's slope in the coordinate plane. Finding the slope between two locations and calculating the slope of a line are related tasks.

The following formula is used to determine slope:

The slope of the line between two points is given by y2 - y1 / x2 - x1.

Given the points are -

(0,0) and (2,6)

The slope of the line passing through the points is -

= 6 - 0 / 2 - 0

= 6/2

= 3

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Answer:

The midpoint of the line segment AB

is at (−1, 0).

Step-by-step explanation:

In a general sense the midpoint formula for a line segment whose endpoints are

[tex] \sf ( x_1 + x_2) (y_1 + y_2)[/tex]

would be the mean of the abscissa and the ordinate as seen in the formula below:

[tex] \sf \: (x_m, \: y_m) = ( \frac{x_1 + x_2}{2} , \frac{y_1 + y_2}{2} )[/tex]

When the line segment lies on one axis, then the there would be only one non-zero value in the ordered pair.

Assuming that the line segment AB

is in the x-axis, then the coordinates of the points would be:

[tex] \sf \: A(−2, 0)B(0,0)[/tex]

To get the midpoint, substitute the points above in the formula for the midpoint:

[tex] \sf \: (x_m, \: y_m) = ( \frac{x_1 + x_2}{2} , \frac{y_1 + y_2}{2} ) \\ \sf \: = ( \frac{ - 2 + 0}{2} ),0 \\ \sf \: = ( \frac{ - 2}{2} ), 0 \: \: \: \: \: \: \: \: \\ \sf \: ( - 1, 0)[/tex]

The midpoint of the line segment AB

is at (−1, 0).

Answer:

The answers are 45f - 42 and -42+45f

Step-by-step explanation:

-5(-9f + 7) - 7

45f (-35 -7)

45f -42

also

-42 + 45f

No, the regular polygon pentagon will not tessellate in the plane.

A tessellation or tiling is the seamless application of one or more geometric shapes, known as tiles, to a surface, frequently a plane. Tessellation in mathematics can be expanded to include other geometries and higher dimensions.

A tiling constructed of materials like cemented ceramic hexagons or squares is referred to as a real-world tessellation. Such tilings may be ornamental designs or serve practical purposes such providing long-lasting and water-resistant pavement, floor, or wall coverings.

Tessellations were historically employed in Islamic art, such as the Moroccan architecture and the ornamental geometric tiling of the Alhambra palace. They were also used in Ancient Rome.

Regular polygons tessellate if their interior angles divide by 360° evenly or if the total of their interior angles is a factor of 360°. A tessellation is a pattern made of identical forms that fit together seamlessly.

So lets find out how pentagon won't tessellate.

First we find the measure of the interior angles of pentagon,

[tex]\frac{540\°}{5} = 108\°[/tex]

Now divide the interior angle by 360°

[tex]\frac{360\°}{108\°}[/tex] = 3.333

Hence, the measure of the interior angle does not divide by 360°.

Therefore, we conclude that the regular polygon pentagon will not tessellate in the plane.

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Answer:

m∠B = 26°

Step-by-step explanation:

∠A and ∠B being complementary means  m∠A + m∠B = 90°

4x + 24 + 3x - 4 = 90

7x + 20 = 90

 7x = 70

  x = 10

m∠B = (3•10 - 4)° = 26°

Answer:

m∠A = 46°

Step-by-step explanation:

The slope-intercept form is y = 1/2x - 4 for line perpendicular to 4 x+2 y=7 through (4,-2) ,

To solve linear equations, utilize the steps that are provided below.

Lets take an example of solve z for 7z – (3z – 4) = 12

Here is no multiplication or division, so this will be easy to solve

⇒ 7z – (3z – 4) = 12

⇒ 7z – 3z + 4 = 12

⇒ 4z = 12 – 4

⇒ 4z = 8

⇒ z = 8/4

⇒ z = 2

See, that was so simple, using the mentioned methods, every linear equation can be solved easily.

In an equation, perpendicular lines have the opposite reciprocal slope. In other words, if a line's slope is a positive fraction, its reciprocal slope is negative.

Here given that  4 x+2 y=7

can also be written as

y = -2x + 7/2

Here -2 is the slope and 7/2 is the y-intercept

To find a perpendicular line to the following equation, use the opposite reciprocal slope and point, then solve using the point-slope formula.

y - y₁ = m(x - x₁)

We have, m = 1/2, x₁ = 4and y₁ = -2

y - (-2)= 1/2(x - 4)

y + 2= 1/2x - 2

y = 1/2x - 4

We have the slope-intercept form y = 1/2x - 4 of a line  perpendicular to  4 x+2 y=7 through (4,-2)

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Answer:

The answer and explanations are in the pictures.

Step-by-step explanation:

A scatter plot is a series of points plotted on horizontal and vertical axes. If there is no correlation between variables, the points appear randomly scattered on the coordinate plane. If the correlation is high, the points will be clustered around a straight line. A scatter chart is a data visualization tool that helps show trends.

The scatter plot shows not only the correlation's magnitude but also the correlation's direction.

As the vertical (or Y-axis) variable increases, the correlation is positive as the horizontal (or X-axis) variable increases.

The correlation is negative if the y-axis variable decreases and the x-axis variable increases, or vice versa.

The correlation is zero if none of the above criteria can be established.

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R (-90°) = (x, y) — > (y, -x)  is the x - and y -coordinates change.

How is a point rotated with respect to the origin?

As it turns out, however, I don’t need to look at options. I can tell you that a clockwise rotation of 90° of a point about the origin is actually considered a rotation of -90°.

(For positive rotations are counterclockwise, while negative rotations are clockwise.) The rule for the type of rotation you speak of is

R (-90°) = (x, y) — > (y, -x)

One more point, if I may. It appears that you copied this problem verbatim right out of a textbook.

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The slope of the line through each pair of points. (-5,-7) and (0,10) is 17 / 5

A line's slope often indicates the steepness and direction of the line. By calculating the difference between the coordinates of the two locations, (x1,y1) and (x2,y2), it is simple to calculate the slope of a straight line between them. The letter "m" is frequently used to denote slope.

The given points are (-5,-7) and (0,10)

Formula to calculate slope is - y2 - y2 / x2 - x1

= 10 + 7 / 0 + 5

= 17 / 5

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For the given situation, we can clearly say that the change in one quantity will also cause a change in the second quantity.

Correlation is a relationship between the values ​​of two variables. A scatter plot is a useful tool for displaying data about two variables as a series of points in the x and y plane and determining whether there is a correlation between the variables.

Causality means that one event causes another. Well-designed experiments can only determine causality. In such experiments, similar groups receive different treatments, and the results of each group are examined.

The collected data on the number of miles driven and fuel expenses. we found that number of miles driven tended to be lower when fuel expenses were high, and the number of miles driven tended to be higher when fuel expenses sales were high.

We do not conclude that more fuel expenses mean fewer miles driven. Likely, an Increased in fuel expenses and the number of miles driven may be caused by a third factor, car mileage. So, the present case is a case of negative correlation.

Negative correlation: y decreases as x increases.

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To calculate the fixed point for the given function that is f(x)= x^5

The value of ‘x’ can take from one to infinity that means the range is (1,infinity)

Therefore,

The function can be represented as: [tex]f(x)= x^5[/tex]

The interval of the variable 'x' is: [tex]0 < x <[/tex]∝ (infinity)

And finally the range of the variable 'x' as: (1, 32,......,infinity)

What is the fixed point?

Fixed points are those points which do not change when they are mapped with different functions. It is also called as invariant points. The fixed point method is used for the calculation of those function which are in the form of constant.

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Answer:

5 days

Step-by-step explanation:

Answer:

All of theses are correct.

4.5

4 1/2

9/2

About 5.

Answer: [tex]525(2)^{n-1}[/tex]

Step-by-step explanation:

We can represent this as a geometric sequence with first term 525 and common ratio 2.

The restriction on the variable x for the expression 5x+15/10x-10÷x²+6 x+9/3x²-3 is  x ≠ -3 .

Restriction in algebraic expression is defined as the value that makes the denominator as 0  or the whole expression as not defined.

For Example: 1/(x+2)   , here the restriction is x ≠ -2 as -2 will make the denominator 0.

In the given question

[tex]=\frac{5x+15}{10x-10} \div\frac{x^{2} +6x+9}{3x^{2} -3}[/tex]

rewriting the expression

[tex]=\frac{5x+15}{10x-10} \times\frac{3x^{2} -3}{x^{2} +6x+9}[/tex]

Simplifying the numerator and denominator we get

=5(x+3)/10(x-1) x 3(x² -1)/(x²+3x+3x+9)  ...( by splitting the middle term )  

=5(x+3)/10(x-1) x 3(x-1)(x+1)/(x+3)(x+3)  ...( using identity a²-b²=(a+b)(a-b)   )

On further simplifying we get ,

=5*3*(x+1)/10(x+3)

=3(x+1)/2(x+3)

For finding restriction;

denominator, 2(x+3)≠0

means (x+3)≠0 ⇒ x ≠ -3.

Therefore , the restriction on the variable x is x ≠ -3 as -3 will make the expression not defined, and the value after division is 3(x+1)/2(x+3).

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The slope of the line containing (-3,3) and (4,3) is Zero (0).

The slope of a straight line can be written as follows,

m =  [tex](y_{2} - y_{1} )/(x_{2} - x_{1} )[/tex]                 equation1

The line is containing the points (-3,3) and (4,3). So, we can write

[tex]y_{2}[/tex] = 3 , [tex]y_{1}[/tex] = 3 , [tex]x_{2}[/tex] = 4 , and [tex]x_{1}[/tex] = -3 .

On substituting the values of variables in equation1, we will get

m = ( 3-3 ) / ( 4-(-3) ) = (0/7) = 0.

As the slope of a line is Zero (0), so we can conclude that the given line is a straight line.

Here:

m = the slope of the line

( [tex]x_{1}[/tex] , [tex]y_{1}[/tex] ) are the first coordinates.

( [tex]x_{2}[/tex] , [tex]y_{2}[/tex] )are the second coordinates.

The slope of the line containing  (-3,3) and (4,3) is Zero (0).

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