How many halves are there in:
1. 51/2

1: you can keep mixed numbers when performing multiplication or division.-----> true

2: numerators must be multiplied by numerators and denominators must be multiplied by denominators.------>false

3: You must convert mixed numbers into improper fractions before multiplying or dividing. ------> false

4: The denominators MUST be the same.​ -----> false

Simplification of the given expression 4 square root of 72 is equal to 24√2 or 33.94.

As given in the question,

Given expression,

4 square root of 72

Prime factors of 72 are as follow:

72 = 2 × 2 × 2 × 3 × 3

Rewrite them into exponent form we get

72 = 2³ × 3²

Simplification of the given expression 4 square root of 72 is

4√72

= 4 × √ 2³ ×3²

= 4 × √ 2² × 2 × 3²

Calculate the square root

= 4 ×2 ×3 √2

= 24√2

= 24 ×1.414

= 33.94

Therefore, simplification of the given expression 4 square root of 72 is equal to 24√2 or 33.94.

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Answer:

1 in 10

Step-by-step explanation:

Answer:

  [tex]y=\begin{cases}-\dfrac{7}{2}x-16&\text{for $-6\le x\le-4$}\\\\\dfrac{1}{5}x-\dfrac{6}{5}&\text{for $-4 < x < 1$}\\\\\dfrac{9}{4}x-\dfrac{13}{4}&\text{for $1\le x\le 5$}}\end{cases}[/tex]

Step-by-step explanation:

You want the piecewise function that describes the relation shown in the graph.

The relation shown consists of three line segments connecting the points ...

  (-6, 5) and (-4, -2)

  (-4, -2) and (1, -1)

  (1, -1) and (5, 8)

The equations for the lines between the pairs of points can be written using the slope formula and the point-slope equation of a line.

The slope formula tells you the slope is ...

  m = (y2 -y1)/(x2 -x1)

And the point-slope equation of a line is ...

  y -y1 = m(x -x1)

If we add y1 to the equation of the line, and substitute the equation for m, we get ...

  y = (y2 -y1)/(x2 -x1)(x -x1) +y1 . . . . . . a 2-point formula for a line

Between x-values -6 and -4, the equation of the line will use the first pair of points:

  y = (-2 -5)/(-4 -(-6))(x -(-6)) +5

  y = -7/2(x +6) +5 = -7/2x -16

Between x-values -4 and 1, the equation of the line will use the second pair of points:

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

  y = 1/5(x +4) -2 = 1/5x -6/5

Between x-values 1 and 5, the equation of the line will use the last pair of points:

  y = (8 -(-1))/(5 -1)(x -1) +(-1)

  y = 9/4(x -1) -1 = 9/4x -13/4

The piecewise function uses the equation for the line that is applicable for the appropriate x-values. We have listed those sets of x-values above.

We need to make sure that the function has only one definition for any given value of x. When two segments have a point in common, we need to make sure only one segment includes it.

  [tex]y=\begin{cases}-\dfrac{7}{2}x-16&\text{for $-6\le x\le-4$}\\\\\dfrac{1}{5}x-\dfrac{6}{5}&\text{for $-4 < x < 1$}\\\\\dfrac{9}{4}x-\dfrac{13}{4}&\text{for $1\le x\le 5$}}\end{cases}[/tex]

The solution for the quadratic equation is -5/2, 2/3

Given,

The equation: 18a² - 30 = -33a

We have to solve this equation

We can convert this equation into a quadratic equation:

18a² + 33a - 30 = 0

Now lets solve this quadratic equation with quadratic formula:

Quadratic formula = [tex]\frac{-b(+-)\sqrt{b^{2}-4ac } }{2a}[/tex]

Here,

a = 18, b = 33 and c = -30

Now we can solve:

[tex]\frac{-b(+-)\sqrt{b^{2}-4ac } }{2a}[/tex]

= [tex]\frac{-33(+-)\sqrt{33^{2} -4(18)(-30)} }{2(18)}[/tex]

=  [tex]\frac{-33(+-)\sqrt{1089-(-2160)} }{36}[/tex]

= [tex]\frac{-33(+-)\sqrt{1089+2160} }{36}[/tex]

= (- 33 ± √3249) / 36

= (- 33 ± 57) / 36

Solve for:

(- 33 + 57) / 36 = 24/36 = 2/3

Solve for:

(- 33 - 57) / 36 = - 90/36 = - 30/12 = -10/4 = -5/2

That is, the solution for the quadratic equation is -5/2, 2/3

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Given:

Given the box plots of two different brands of shoes.

Required: Most appropriate comparison of the spreads

Explanation:

From the box plot of brand A,

Minimum value = 65

First quartile, Q1 = 70

Median = 75

Third quartile, Q3 = 80

Maximum value = 85

Also, from the box plot of brand B,

Minimum value = 15

First quartile, Q1 = 50

Median = 60

Third quartile, Q3 = 70

Maximum value = 85

The interquartile range is the difference between the upper quartile and the lower quartile

The interquartile range of brand A is

The interquartile range of brand B is

Option A is correct.

The median for brand A is $75, which is less than the median of brand B, $60.

Option C is correct.

Final Answer: The most appropriate

On the Left side is just an example.

On the paper is my answer to your question with explanation.

Hope this will help:)

Answer:

They subtracted when they should have added

Step-by-step explanation:

You must do the opposite so if it says -17 you must add 17 to the other side the answer should be 32

The required implicit solution to the initial-value problem would be  5x²- y² = 9.5 which is the equation of a hyperbola.

Hyperbola is defined as a conic section, a two-branched open curve, produced by the intersection of a circular cone.

(x-h)²/b² - (y-k)²/a² = 1

We have been given that 5x²- y² = c is a one-parameter family of solutions of the differential equation.

To determine an implicit solution to the initial-value problem ydy/dx = 5x

⇒ y dy/dx = 5x

⇒ y dy = 5x dx

⇒ y²/2 = 5x²/2 + c

If y(3) = −8 which is the means that when substitute x = 3 then y = -8

⇒ (-8)²/2 = 5(3)²/2 + c

⇒ 64/2 = 5(9)/2 + c

⇒ 32 = 22.5 + c

⇒ c = 9.5

Substitute the value of c in the given function 5x²- y² = c

⇒ 5x²- y² = 9.5 which is the equation of a hyperbola.

Therefore, the implicit solution to the initial-value problem would be  5x²- y² = 9.5.

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The equation of the perpendicular line is y = x + 3

Perpendicular line:

The perpendicular line means a straight line that makes the right angle (90 degrees) with the other line.

Given,

Here we have the equation y = -x + 3.

Now, we need to find the equation of the perpendicular line.

In order to find the equation of a perpendicular line, first we need to find the negative reciprocal of the slope given.

Through the given equation we have identified the slope of the line is -1. so the slope of the perpendicular line will be 1.

While looking at the graph we have identified the y intercept of the equation is 3.

So now we know the values of y-intercept and slope.

We just put them together, and apply it one the standard form of the equation of line, then we get,

y = 1x + 3

y = x + 3.

Therefore, the equation of perpendicular line is y = x +3.

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the second one

Step-by-step explanation:

if 75 is the minum speed then you need to go more than 75 and less than 80 which is what the second one is showing

The marginal profit is -41 dollars.

In accounting, a profit is an income that is given to the owner throughout a successful market producing process (business).

The advertising is given by P(x) = 930 + 15x -4x².

The marginal profit at x = 7 is given by

P(x) = 930 + 15x -4x²

P'(x) = 15 - 8x

Now at x = 7 the marginal profit is

P'(7) = 15 - ( 8×7 )

or, P'(7) = -41

Hence there will be marginal profit of -41 dollars.

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The equation for two different bowling alleys is 2x - 3y = -2

This is a problem from algebraic equations. We can solve this problem by following a few steps.

In the first case, he paid $7 to rent a pair of shoes and x dollars an hour to bowl and bowled for 2 hours on Friday.

Here, the cost to bowl for one hour is x dollars. So, the cost to bowl for 2 hours is ( 2× x ) = 2x

Now, the total expenditure for shoes and to bowl is, (2x + 7) dollars

In the second case, he paid $5 to rent a pair of shoes and y dollars an hour to bowl and bowled for 3 hours on Saturday.

Here, the cost to bowl for one hour is y dollars. So, the cost to bowl for 3 hours is (3 × y) = 3y

Now, the total expenditure for shoes and to bowl is, (3y + 5) dollars.

As the total expenditure is the same in these two cases. Therefore, we can conclude,

(2x + 7) = (3y + 5)

Or, 2x - 3y = -2

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The equation in slope-intercept form that represents the function is: g(x) = -2x + 1.

To write the slope-intercept form of an equation that represents the linear function g, find the slope (m) of the line and determine the y-intercept (b) of the line, then substitute the values into g(x) = mx + b.

Slope of the line that represents function g = change in y/change in x = -6 units/3 units

Slope of the line (m) = -6/3

Slope of the line (m) = -2.

The line intercepts the y-axis at y = 1, therefore the y-intercept (b) of the linear function is b = 1.

To write the equation representing the function, substitute m = -2 and b = 1 into g(x) = mx + b:

g(x) = -2x + 1

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1) Let's make use of pair of number lines to find the union between those intervals:

2) Note that in the first line the point 10 is included, while in the second one is not so the answer is:

Answer: The answer is -5559

Step-by-step explanation:

The  quadratic equation that opens down and has vertex at (2,-8) is y = (-|a|)*(x - 2)² + (-8).

The graph of a quadratic function has the shape of a parabola. Although a parabola's "width" or "steepness" and direction of opening can differ, they all have the same basic "U" shape.  If the leading coefficient is larger than zero, the parabola opens upward; if it is less than zero, it opens downward.

The quadratic equation's vertex form is y = a*(x - h)2 + k.

Given that (2,-8) or (h, k) is the vertex point (2,-8)

Since the graph starts out downward, a will have a negative value.

Since |a| is the magnitude of a, the quadratic equation will then be written as y = (-|a|)*(x - 2)2 + (-8).

Consequently, y = (-|a|)*(x - 2)2 + is a quadratic equation that opens downward and has a vertex at (2,-8). (-8).

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Answer: slope = -4

Step-by-step explanation:

y – 3 = –4(x – 5)

y - 3 = -4x + 20

y = -4x + 23

slope = -4

The expression for the perimeter of the triangle is 6k + m -9.

How to calculate perimeter of the triangle?

In mathematics, the perimeter of any closed shape means addition of all the sides. Therefore, triangle has three sides and their addition represents the perimeter. It can be measured in different units like meters, centimeters, etc.

According to the question, the given parameters for the triangle is as written below:

The side lengths are: (5k - 3); (k + 1) and (m - 7)

Now, the perimeter of a triangle is addition of all the sides. That means,

Perimeter of a triangle = 5k - 3 + k + 1 + m - 7 = 6k + m - 9

Hence, the expression for the perimeter of the triangle is 6k + m -9.

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From the graph we can say that Domain : (-∞,-1) ∪(1,∞)

Range : (0,∞)

Mathematical procedures are comparable to those of a soda vending machine. You can choose from a variety of sodas after you deposit a particular sum of money. Similar to how we enter different numbers into functions, we also receive new numbers as the outcome. The two essential characteristics of functions are domain and range. A soda can be purchased using quarters and one dollar bills. If pennies are put into the machine, no soda flavor will be provided. As a result, the domain depicts the possible inputs, which are quarters and one-dollar bills. No matter how much you pay, a Coke machine won't give you a cheeseburger.

From the graph we can say that

Domain : (-∞,-1) ∪(1,∞)

Range : (0,∞)

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The unknown angle for the given right triangle ABC which is angle A is: 63°

We are given the angles of a right angle triangle ABC as;

∠B = 90°

∠C = 27°

Now, it is pertinent to note that the sum of all angles in any given triangle is always 180°. This means that in our right angle triangle ABC, we can say that;

∠A + ∠B + ∠C =  180°

Thus;

∠A + 90 + 27 = 180

∠A + 117 = 180

∠A = 180 - 117

∠A = 63°

Thus, we conclude that the value of angle A is gotten as ∠A = 63°

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Complete question is;

Find the unknown angle for the following right triangle:

Angle A Angle B Angle C

  ?            90          27

we have that the midpoint is (-2,-7)

and the endpoint is (12,-9)

We remember the midpoint formula:

Where (x1,y1) are the coordinates of one endpoint and

(x2,y2) are the coordinates for the other endpoint.

Here, we are trying to find (x2,y2) given that

(x1, y1) ---> (12, -9)

And since we also know the midpoint M(-2, -7), making a comparison with this and the midpoint formula, we get two equations, the first one is:

substituting x1 and solving for x2:

And now, with the second equation which is:

we substitute y1 and solve for y2:

solving for y2:

This the other endpoint (x2,y2) is at (-8,-5)

When £50 is decreased by 60%, the remaining value is £20.

A percentage refers to the ratio of a variable expressed as a fraction of 100.

Percentages show the proportional value contained in another.

We use the percent sign (%) to denote percentages, which may be increases or decreases.

Initial value = £50

Percentage decrease = 60%

Percentage change = 40% (1 - 60%)

In monetary terms, the final value after the percentage decrease = £20 (£50 x (1 - 60%).

Thus, when £50 is reduced by 60% the value left is only 40% of the former deal, which is £20.

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At a tax rate of 4 mills, Rolan's monthly taxes are $667.00.

Given:

Assessed value = 1.5 million dollars

Amount for Improvements = $500,000

Tax rate = 4 mills

Total assessment of the property = Assessed value + Improvements

                                                       = 1,500,000 + 500,000

                                                       = $2,000,000

Multiply these 2 million by 4 mills then divide by 1000.

(2,000,000 × 4)/1000

= $8000 in annual taxes

To calculate the monthly tax amount divide by 12.

$8000/12 = $667.00

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The area of the sector is approximately 1954.77 square yards.

A circular sector, also known as a circle sector or a disc sector (symbol:), is a piece of a disc (a closed region bordered by a circle) encompassed by two radii and an arc. The smaller area is known as the minor sector, and the bigger is known as the major sector.

Any point on the circle outside of the sector can be connected to the arc's endpoints to produce half of the central angle.

We know that the area of a circle is πr² and the area of the sector of a circle with angle θ is given by θ/360 πr² .

Area of the sector

= 140°/360°  × π × 40²

= 1954.7687... square yards.

≈ 1954.77 square yards.

Therefore the area of the sector is approximately 1452.113 square yards.

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189cm²

Step-by-step explanation:

area is multiplication so it will be L×B

also because its a rectangle

1)

2) The term quadratic describes something that pertains to squares, to the operation of squaring, to terms of the second degree

3) of or relating to the fourth degree. a quartic polynomial or equation.

4) quintic : a polynomial or a polynomial equation of the fifth degree.

5)

6)

Answer:

x= 0,1+3i, 1-3i

Step-by-step explanation:

So the first option

The probability is given by -0.001, that the mean of the sample would differ from the population mean by less than 0.9 watts.

What is normal probability distribution?

Normal distribution also known as the Gaussian probability, ia a probability distribution that is symmetric about the mean, showing that data bear the mean are more frequent in occurrence than data far from the mean.

In a set with mean μ and standard deviation (which is the square root of the variance) σ , the z score of a measure X is given by:

Z =X-μ/σ

we have given μ =129

σ = [tex]\sqrt{100}[/tex] n = 96

This is the pvalue of Z when X = 129+1.7 =130.7 subtracted by the pvalue of Z when X = 129 - 1.7 = 127.3

When X = 130.7

Z =X-μ/σ

Z = 130.7-129/10

Z = 0.17  pvalue = 0.1699

When X = 127.3

Z =X-μ/σ

Z = 127.3-129/10

=-0.17 pvalue

0.1699 - 0.1700 = -0.001

Hence the probability is -0.001

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