What is the rate of 28/22

Answer:

Step-by-step explanation:

Whole, integer, rational, real

Answer:

The possible values of the perimeter of the rectangle is between 18 and

18.4 cm ⇒ [18 < perimeter of rectangle < 18.4] cm

Step-by-step explanation:

* Lets explain how to solve the problem

- The perimeter of any quadrilateral is the sum of the length of its

  four sides

- The rectangle is a quadrilateral with each two opposite sides are

  equal in lengths, then its perimeter = 2l + 2w, where l, w are its

  length and width

∵ The the length of the rectangle is a

∵ 5.4 < a < 5.5 cm

∵ The perimeter of the rectangle = 2a + 2b

- Lets multiply the inequality by 2

∴ 5.4 × 2 < a × 2 < 5.5 × 2

∴ 10.8 < 2a < 11 ⇒ (1)

∵ The width of the rectangle is b

∵ 3.6 < b < 3.7 cm

- Lets multiply the inequality by 2

∴ 3.6 × 2 < b × 2 < 3.7 × 2

∴ 7.2 < 2b < 7.4 ⇒ (2)

- Add inequalities (1) and (2)

∵     10.8 < 2a < 11

  +   7.2 < 2b < 7.4

∴  18 < 2a + 2b < 18.4

∵ 2a + 2b represents the perimeter of the rectangle

∴ The possible values of the perimeter of the rectangle is between

  18 and 18.4 cm ⇒ [18 < perimeter of rectangle < 18.4] cm

Answer:

(2,3)

Step-by-step explanation:

Rotation through 90 clockwise gives the expression

( x , y )___ ( y ,- x )

so when you put the points -3 ,2 in the relation , it becomes

( -3 , 2 ) ___ ( 2, - -3 )

= ( x, y ) __ ( 2, 3 ). meaning when you rotate -3,2 through 90 clockwise you will get the image ( 2 ,3 )

The equation which is equivalent to √x + 11 = 15 is: C. √x = 15 - 11.

Given the following equation:

To evaluate the given mathematical equation:

In this exercise, you're required to evaluate the given mathematical equation. Thus, we would make x the subject of formula in the equation and then simplify as follows:

√x = 15 - 11 (equivalent)

√x = 4

Taking the square of both sides, we have:

x = 4²

x = 16.

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Answer:

The distance (d) between two points (x1,y1) and (x2,y2) is given by the formula

d = √  ((X2-X1)2+(Y2-Y1)2)

d = √ (5-2)2+(3-8)2

d = √ ((3)2+(-5)2)

d = √ (9+25)

d = √ 34

The distance between the points is 5.8309518948453

The midpoint of two points is given by the formula

Midpoint= ((X1+X2)/2,(Y1+Y2)/2)

Find the x value of the midpoint

Xm=(X1+X2)/2

Xm=(2+5)/2=3.5

Find the Y value of the midpoint

Ym=(Y1+Y2)/2

Ym=(8+3)/2=5.5

The midpoint is: (3.5,5.5)

Graphing the two points, midpoint and distance

P1 (2,8)

P2 (5,3)

Midpoint (3.5,5.5)

The length of the black line is the distance between the points (5.8309518948453)

Find the slope of the line connecting the two points

Slope =  (Y2-Y1)  =  (3-8)  =  (-5)  = -1.66666666666667

(X2-X1) (5-2) (3)

Find the equation of the line passing through the two points

The general equation for a straight line is

y = mx + b

Where m represents the slope of the line which we found in the previous step to be -1.66666666666667

y = -1.67x + b

We substitute x and y for the values from one of our points (2,8)

8 = -1.67×2 + b

8 = -3.33 + b

8--3.33 = b

11.33 = b

Knowing both b and m, we can contruct the equation of the line

y= -1.67x+ 11.33

X and Y intercepts

The x-intercept is a point on the graph where y is zero

Using the equation we found in the previous step and substituting zero for y

y= -1.67x+ 11.33

0= -1.67x+ 11.33

1.67x= 11.33

x= 11.33/1.67 = 6.80

The x intercept for this straight line is 6.80

The y-intercept is a point on the graph where x is zero

Using the equation we found in the previous step and substituting zero for x

y= -1.67×0+ 11.33

y= 11.33

The y intercept for this straight line is 6.80

References

refernce image showing the distance between two points on the xy plane

Step-by-step explanation:

The distance between the two points will be √34. The correct option is c

A coordinate plane is a 2D plane that is formed by the intersection of two perpendicular lines known as the x-axis and y-axis. A coordinate system in geometry is a method for determining the positions of the points by using one or more numbers or coordinates.

The distance (d) between two points (x₁,y₁) and (x₂,y₂) is given by the formula:-

d = √  ((X₂-X₁)²+(Y₂-Y₁)²)

d = √ (5-2)²+(3-8)²

d = √ ((3)²+(-5)²)

d = √ (9+25)

d = √ 34

Therefore, the distance between the two points will be √34. The correct option is c

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Answer:

h

Step-by-step explanation:

80-35=45

4days x10=40

leaving 5 dollars left so u need another week to save 5 dollars more

in total of 5 weeks

The answer is She has to work at least for 4.5 to be able to buy the bicycle i.e x≥4.5

The unitary method is a method in which you find the value of a unit and then the value of a required number of units.

Given here: price of the bicycle is $80 and she has $35 in hand

If she earns $10 in a week then let x weeks be the minimum number of weeks she has to work then we have

x= 45/10

  =4.5 weeks

Hence, She has to work at least for 4.5 to be able to buy the bicycle

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Answer: A, 17 inch

The box is 21 inches long, anything longer and it won't fit. 17 inch is the only thing shorter than 21.

Answer:

the green means its right at the top

Step-by-step explanation:

Answer:

-6

Step-by-step explanation:

-2 * 5 = -10

-10 + 4 = -6

Answer is -6

-2(5)+4

You multiply '-2' to '(5)' which equals to '-10' then you add '4' and the correct answer is '-14'

Hope this helped, my dude

Answer:

2⅖

Step-by-step explanation:

Set this up as a proportion:

⅘ ? [parts of the necklace]

__ = __

⅓ 1 [hours]

Divide four-fifths by one-third to get 2⅖.

I am joyous to assist you anytime.

** ⅓ hour = 20 minutes

The lines that are parallel to each other are as follows;

When parallel lines are cut by a transversal, angles relationship are formed.

This angle relationship includes corresponding angles, alternate angles, vertical angles and many more.

Therefore, the lines that are parallel are as follows;

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Answer:

D

Step-by-step explanation:

[tex]\frac{f(x)}{g(x)}[/tex]

= [tex]\frac{2x+4}{2x^2+4x}[/tex]

Factor out 2 on the numerator and 2x on the denominator.

= [tex]\frac{2(x+2)}{2x(x+2)}[/tex]

Cancel the factor (x + 2) on the numerator/ denominator

= [tex]\frac{2}{2x}[/tex] ← cancel the 2 on numerator/ denominator

= [tex]\frac{1}{x}[/tex] : x ≠ 0

Assuming one salad requires 1 cup of tomatoes, Karl can make 5 salads as shown by the division equation 5 cups / 1 salad = 5 salads. The multiplication equation 5 salads x 1 cup = 5 cups demonstrates the amount of tomatoes needed for 5 salads.

To properly answer this question, we first need to know the number of cups of tomatoes required to make one salad. However, if we suppose that one salad requires 1 cup of tomatoes, then the division equation is 5 cups / 1 salad = 5 salads. This equation illustrates that Karl can make 5 salads with the amount of tomatoes he has.

On the other hand, the multiplication equation would be 5 salads x 1 cup = 5 cups. This equation pertains to how many cups of tomatoes are needed to make 5 salads. Please note that these equations assume that 1 cup of tomatoes is needed for a single salad, but the proportions may vary depending on the actual recipe.

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Karl can make 5 salads using 5 cups of tomatoes.

Assuming Karl makes salads that require 1 cup of tomatoes each, we can determine the number of salads he can make using division:

Number of salads = Total tomatoes (cups) / Tomatoes per salad (cups)

Number of salads = 5 cups / 1 cup/salad

Therefore, Karl can make 5 salads using 5 cups of tomatoes.

A multiplication equation can be used to express the relationship between the number of salads, the number of tomatoes per salad, and the total number of tomatoes:

Total tomatoes (cups) = Number of salads × Tomatoes per salad (cups)

5 cups = 5 salads × 1 cup/salad

Both equations demonstrate the same relationship between the number of salads, the number of tomatoes per salad, and the total number of tomatoes.

Answer:

-4 = h(x)

Step-by-step explanation:

[tex]6 - 10 = -4[/tex]

I am joyous to assist you anytime.

Answer:

They are mirrored

Step-by-step explanation:

When you cut it in half horizontally you can see both sides are mirrored so the  lines have the same length

Answer:

The decimal number is 0.964

Step-by-step explanation:

we have

[tex]9(\frac{1}{10})+ 6(\frac{1}{100})+4(\frac{1}{1,000})[/tex]

step 1

Multiply each fraction by the whole number

[tex](\frac{9}{10})+ (\frac{6}{100})+(\frac{4}{1,000})[/tex]

step 2

Convert each fraction in a decimal number

Remember

Move the decimal point to the left as many places as there are zeros in the factor.

Move the decimal point one step to the left (10 has one zero).

Move the decimal point two steps to the left (100 has two zeros)

Move the decimal point three steps to the left (1000 has three zeros)

[tex]0.9+0.06+0.004[/tex]

step 3

Adds the number

[tex]0.964[/tex]

Answer:

A

Step-by-step explanation:

The general formula for the volume of a right cone is as follows (also see attached):

V = (1/3) π r² h; where r = radius of base and h = height

In this case, it is given that r = x

also given :

height = 2 (base radius)

or

h = 2x.

Hence the formula becomes:

V = (1/3) π r² h

V = (1/3) π x² (2x)

V = (2/3) π x³  (answer A)

Answer:

x = y + b - a

Step-by-step explanation:

Given

y = x + a - b ( add b to both sides )

y + b = x + a ( isolate x by subtracting a from both sides )

y + b - a = x

Answer:

8.) x = 5, x=-12

9.)x = 5, x = -8

10.)x = -1/5, x = -2

Hope I helped :)

Answer:

10. -2, -⅕ = x

9. -8, 5 = x

8. -12, 5 = x

7. -5, 6 = x

Step-by-step explanation:

10. [tex]5{x}^{2} + 11x + 2 = 0 \\ \\ (5{x}^{2} + x) + (10x + 2) = 0 \\ x(5x + 1) + 2(5x + 1) \\ \\ (x + 2)(5x + 1) = 0 \\ \\ -2, \: - \frac{1}{5} = x[/tex]

9.

[tex]2{x}^{2} + 6x - 80 = 0 \\ \\ (2{x}^{2} + 16x) - (10x - 80) = 0 \\ 2x(x + 8) -10(x + 8) = 0 \\ \\ (x + 8)(2x - 10) = 0 \\ \\ -8, \: 5 = x[/tex]

8.

[tex] {x}^{2} + 8x - 65 = x - 5 \:→ {x}^{2} + 7x - 60 \\ \\ ({x}^{2} - 5x) + (12x - 60) \\ x(x - 5) + 12(x - 5) \\ \\ (x + 12)(x - 5) = 0 \\ \\ 5, \: -12 = x[/tex]

7.

[tex] {x}^{2} = x + 30 → - {x}^{2} + x + 30 \\ \\ (-{x}^{2} - 5x) + (6x + 30) \\ -x(x + 5) + 6(x + 5) \\ \\ -(x - 6)(x + 5) = 0 \\ \\ -5, \: 6 = x[/tex]

I am joyous to assist you anytime.

Answer:

c

Step-by-step explanation:

Graph C of ordered pairs shows a proportional relationship.

Proportional relationships are relationships between two variables where their ratios are equivalent. Another way to think about them is that, in a proportional relationship, one variable is always a constant value time the other.

A proportional relationship is one where there is multiplying or dividing between the two numbers. A linear relationship can be a proportional one (for example y=3x is proportional), but usually, a linear equation has a proportional component plus some constant number (for example y=3x +4).

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Move n terms on one side and other terms on the other side. Note that by moving we are essentially subtracting and adding to both sides so the prefix of a term changes from - to + or from + to -.

[tex]

-4n-5=-3n+4 \\

-4n+3n=4+5 \\

-n=9 \\

n=-9

[/tex]

Hope this helps.

Final answer:

To find the unit price of markers in a set, divide the total cost by the number of markers to find that each marker costs $0.30 when 20 are purchased for $6.

Explanation:

Lainey's purchase of a set of 20 markers for $6 can be used to illustrate a simple mathematical concept known as unit price, which is the cost per individual item when items are sold in a set or batch. To calculate the unit price, you divide the total cost by the number of items in the set. Here's how you can do this calculation:

Determine the total cost of the set of markers, which is $6.

Count the number of markers in the set, which is 20.

Divide the total cost by the number of markers to find the unit price: $6 ÷ 20 = $0.30 per marker.

Therefore, the cost of each individual marker from the set is $0.30. Starting small, such as with markers, pencils, sharpeners, and erasers, and gradually adding other items like construction paper or magnets, are good practices in both purchasing supplies and understanding incremental costs in financial literacy.

Answer:

l = (S - 2wh)/(2w + 2h)

Step-by-step explanation:

S = 2lw + 2wh + 2hl

S - 2wh = 2lw + 2hl

S - 2wh = l (2w + 2h)

(S - 2wh)/(2w + 2h) = l

The equation S = 2lw + 2wh + 2lh the value of l is given by l = S / (2w + 2h + 2wh)

To solve for l in the equation S = 2lw + 2wh + 2lh, we'll isolate l on one side of the equation. Here are the steps to do that:

Step 1: Start with the given equation:

S = 2lw + 2wh + 2lh

Step 2: Factor out l from the terms that contain it:

S = l( 2w + 2h + 2wh )

Step 3: Divide both sides of the equation by (2w + 2h + 2wh) to solve for l:

S / ( 2w + 2h + 2wh ) = l

So, the value of l is given by:

l = S / ( 2w + 2h + 2wh )

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Answer:

Step-by-step explanation:

an equation is : Use the point-slope formula.

y - y_1 = m(x - x_1)    ;  m : the slope   when : x_1 = -3   and  y_1  = 7

- 2 ×m = - 1  because this line is perpendicular to the line y= -2x-5 when the slope is  -2

so : m= 1/2

an equation is : y - 7 =(1/2)(x+3)  

Answer:

The desired equation is

y = (1/2)x + 17/2

Step-by-step explanation:

The slope of the perpendicular line is the negative reciprocal of -2:  m = 1/2.

Start with y = mx + b.

Substituting 7 for y, 1/2 for m and -3 for x, we get:

                7 = (1/2)(-3) + b.  Then 7 = -3/2 + b, so that b = 17/2.

The desired equation is

y = (1/2)x + 17/2

reduce the index of the radical and exponent with 3, rhen you get your answer, 6

Answer:

2 cubic centimeters per minute

Step-by-step explanation:

8 cubic centimeters filled per 4 minutes

divide 8 by 4 = 2

2 cubic centimeters per minute

Answer: 2 cubic centimeters

Step-by-step explanation:

Given : As lucia fills her fish tank, she notices that it fills 8 cubic centimeters of water in 4 minutes.

i.e. Time taken to fills 8 cubic centimeters of water = 4 minutes

By UNITARY METHOD, we have

Amount of water it fills in 1 minute (i.e. Unit rate) = [tex]\dfrac{\text{8 cubic centimeters }}{\text{4 minutes}}[/tex]

= [tex]\dfrac{8}{4}=2[/tex] cubic centimeters

Therefore, it fills 2 cubic centimeters in 1 minute.

Hence, the correct answer is 2 cubic centimeters.

The inverse of 1/4 is 4.

Choice C

Final answer:

An expression for a number that's twice another number represented by n is written as 2n.

Explanation:

If n represents a number, then the expression for a number that's twice n can be written as 2n. This stems from the definition that multiplying a number by 2 effectively doubles it. To better understand this concept, consider the next statement, N=N*2, which tells us that the new value of N is twice the original value. So, if we substitute N with n, we can express a number that's twice n as 2n.

Answer:

3/2 (or 1 1/2)

Step-by-step explanation:

-4 1/6 + 5 2/3​   (express as improper fractions)

= -25/6 + 17/3  (convert fractions common denominator i.e 6)

= -25/6 + (17/3)(2/2)

= -25/6 + (17 x 2)/6

= -25/6 + 34/6

= 9/6

= 3/2

=1 1/2

Answer:

<1 ,1>..., square root of two

Step-by-step explanation:

Component of vector PQ...,

; Q - P...where you subtract the x coordinate of Q by the x coordinate of P and the same for the y coordinate

; <(6-5),(9-8)>

; < 1,1 >

And the magnitude of PQ...,

;square root of( 1^2 + 1^2 )

;square root of 2

Final answer:

The component form of vector PQ is <1, 1>, and the magnitude is the square root of 2, thus the correct answer is <1, 1>, square root of 2.

Explanation:

To find the component form and magnitude of vector PQ, we calculate the difference in the x-coordinates and the y-coordinates of points P and Q. The component form of a vector is obtained by subtracting the coordinates of the initial point from the coordinates of the terminal point. In this case, the initial point is P(5, 8) and the terminal point is Q(6, 9).

The component form of vector PQ is therefore:

Vector PQ = (Qx - Px, Qy - Py)

Vector PQ = (6 - 5, 9 - 8)

Vector PQ = <1, 1>

Next, to find the magnitude of vector PQ, we use the Pythagorean theorem, which is the square root of the sum of the squares of the components:

Magnitude of PQ = √(1^2 + 1^2)

Magnitude of PQ = √(2)

Magnitude of PQ = √2

Therefore, the correct answer is <1, 1>, √2.

Answer:

7√2 i

Step-by-step explanation:

√(-98)

=√{(-1) .98}

=√(-1 . 2 . 7²)

=√-1 .√2 . √7²

= i . √2 . 7         [∵√-1 = i ]

=7√2 i

Answer:

[tex]\large\boxed{\sqrt{-98}=7\sqrt2\ i}[/tex]

Step-by-step explanation:

[tex]\sqrt{-98}=\sqrt{(-1)(49)(2)}\qquad\text{use}\ \sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\\\\=\sqrt{-1}\cdot\sqrt{49}\cdot\sqrt2\qquad\text{use}\ \sqrt{-1}=i\ -\text{an imaginary unit}\\\\=i\cdot7\cdot\sqrt2\qquad\sqrt{49}=7\ \text{because}\ 7^2=49\\\\=7\sqrt2\ i[/tex]