Add or subtract. Simplify where possible. 5 / y+3 + 15 / y-3

Answers

Answer 1

The simplified form of expression is  (2y + 3).

Rewriting the provided mathematical expression first -

5/(y + 3) + 15/(y - 3)

Shifting the second expression on other side of equation -

5/(y + 3) = - 15/(y - 3)

Performing cross multiplication

5 (y - 3) = -15 (y + 3)

5y - 15 = -15y - 45

Rearranging the equation

5y - (-15y) = -45 - (-15)

Performing addition and subtraction

5y + 15y = -45 + 15

20y = -30

Dividing both sides of equation by 10

2y = - 3

Rearranging the equation -

2y + 3

Hence, the simplified form of expression is (2y + 3).

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Related Questions

transformation geometry definition

Answers

Answer:

In mathematics, transformation geometry (or transformational geometry) is the name of a mathematical and pedagogic take on the study of geometry by focusing on groups of geometric transformations, and properties that are invariant under them.

Step-by-step explanation:

in easy language it's Transformations. Transformation means to change. Hence, a geometric transformation would mean to make some changes in any given geometric shape.

Determine the values of x in the equation x2 = 49.

Answers

Answer:

x = 7

Step-by-step explanation:

➟ x² = 49

in order to find the value of x will have to take square root of both side

➟ [tex] \sf \sqrt{x} = \sqrt{49} [/tex]

Calculate

➟ [tex] \sf \: x = 7[/tex]


Find the least common multiple of each pair of polynomials.
9(x+2)(2 x-1) and 3(x+2)

Answers

The least common multiple of the given polynomial 9(x+2)(2 x-1) and 3(x+2) is 3(x + 2).

According to the given question.

We have two polynomials 9(x + 2)(2x - 1) and 3(x + 2).

Since, we have to find the least common multiple of 9(x + 2)(2x -1) and 3(x+2).

As we know that, the least common multiple, lowest common multiple, or smallest common multiple of two integers a and b, usually denoted by lcm(a, b), is the smallest positive integer that is divisible by both a and b. Since division of integers by zero is undefined, this definition has meaning only if a and b are both different from zero.

From the definition of least common multiple, we can say that the least common multiple of 9 and 3 is 3 and (x +2)(2x -1) and (x + 2) is (x + 2).

Thereofrore, the least common multiple of the given polynomial 9(x+2)(2 x-1) and 3(x+2) is 3(x + 2).

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Find the slope of the line through each pair of points. (-3,5) and (4,5)

Answers

The slope of the equation is 5 for the coordinates (-3,5) and (4,5).

What factors determine slope?

Locate two points along the chosen line and find their coordinates.

Find the y-coordinate difference between these two sites (rise).

Find the x-coordinate difference between these two sites (run). Subtract the difference in y-coordinates from the difference in x-coordinates (rise/run or slope).

The slope calculation formula is -

m = y2 - y1 / x2 - x1

Given points are -

(-3,5) and (4,5)

Now, putting the values in equation,

m = 5-5 / 4+3

m = o

As slope is 0, this implies,

the equation of line is y = 5

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Find the coordinates of the vertex of the following parabola algebraically. Write your answer as an (x,y) point.

y=-x^2-6x-16

Answers

[tex]\textit{vertex of a vertical parabola, using coefficients} \\\\ y=\stackrel{\stackrel{a}{\downarrow }}{-1}x^2\stackrel{\stackrel{b}{\downarrow }}{-6}x\stackrel{\stackrel{c}{\downarrow }}{-16} \qquad \qquad \left(-\cfrac{ b}{2 a}~~~~ ,~~~~ c-\cfrac{ b^2}{4 a}\right) \\\\\\ \left(-\cfrac{ -6}{2(-1)}~~~~ ,~~~~ -16-\cfrac{ (-6)^2}{4(-1)}\right) \implies \left( - \cfrac{ -6 }{ -2 }~~,~~-16 - \cfrac{ 36 }{ -4 } \right) \\\\\\ (-3~~,~~-16+9)\implies (-3~~,~~-7)[/tex]

Class is over! Mr. Shrager does not always let his
statistics class out on time. In fact, he seems to enc
class according to his own "internal clock." The
density curve models the distribution of the
amount of time after class ends (in minutes) when
Mr. Shrager dismisses the class. (A negative value
indicates he ended class early.)

Answers

Part (a)

The horizontal part of the rectangle goes from m = -1 to n = 4. This is a distance of 5 units because |m-n| = |-1-4| = 5

The height is some unknown variable h

It must multiply with the base (5) to get an area of 1

base*height = area

5h = 1

h = 1/5

h = 0.2

Answer:  height = 1/5 = 0.2

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

Part (b)

x = dismissal time minutes after class

Something like x = 2 means he dismisses class 2 minutes after the bell, while x = -1 is him dismissing class 1 minute early before the bell.

The phrasing "within 1 minute" means that x is between p = -1 and q = 1. So we can say [tex]-1 \le x \le 1[/tex]

This is a span of 2 units because |p-q| = |-1-1| = 2. Divide this over the entire horizontal span: 2/5 = 0.4

Exactly 40% of the time the teacher lets his class out within one minute of the scheduled end time.

Answer: 0.4

What is the equation of the line that passes through the point
(
8
,

6
)
(8,−6) and has a slope of 0?

Answers

Answer:

The Answer is y=-6


Write an explicit and a recursive formula for each sequence. -32,-20,-8,4,16, . . . . . .

Answers

an=a1+d(n−1)  is the explicit and a recursive formula for each sequence .

What is sequence?

See the pattern

-32-(-20) = -12

-20-(-8) = -12

-8-4 = -12

By this the explicit and a recursive formula for each sequence is  an=a1+d(n−1).

An ordered group of numbers with a shared difference between each succeeding word is known as an arithmetic sequence. For instance, the common difference in the arithmetic series 3, 9, 15, 21, and 27 is 6.

Arithmetic sequences are sequences containing these patterns. The distance between succeeding terms in an arithmetic series is always the same. The difference between consecutive words is always two, hence the sequence 3, 5, 7, 9... is arithmetic.

An explicit formula that states a = d (n - 1) + c, where d is the common difference between succeeding words, and c = a1, can be used to establish an arithmetic sequence.

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Determine whether y varies directly with x . If so, find the constant of variation.
y+3=-3 x

Answers

The required value of constant of variation, k does not exist for which x and y vary directly..

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 constant of variation

When a quantity varies directly with others, then we have a relation, y = kx, where k is the constant of the proportion      —-- 1

Given relation is  y + 3 = -3 x

y = -3 x - 3

y = -3(x + 1)

Comparing with equation 1, we get that y does not vary directly for any value of k.

Hence, the required value of constant of variation is does not exist.

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Determine whether each function is even, odd, or neither.g(x) = x + x²

Answers

The function is neither an even function nor an odd function

How to determine the function type?

The function is given as

g(x) = x + x^2

Calculate g(-x)

So, we have

g(-x) = -x + (-x)^2

Evaluate

g(-x) = -x + x^2

Calculate -g(x)

So, we have

-g(x) = -x - x^2

In the above computations;

g(x) does not equal g(-x) and -g(x)

Hence, the function is neither an even function nor an odd function

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how many 0.8-liter glasses of waters does it take to fill up a 10.4-liters pitcher

Answers

13 litres of 0.8-liter glasses of waters does it take to fill up a 10.4-liters pitcher.

Concept: In simple words, division can be defined as the splitting of a large group into smaller groups such that every group will have an equal number of items. It is an operation used for equal grouping and equal sharing in math.

Quantity of 1 glass of water= 0.8 liters

Quantity to be filled completely = 10.4 liters

No . of 0.8-liter glasses of waters does it take to fill up a 10.4-liters pitcher = 10.8/0.4 = 13

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Evaluate the sum of the finite geometric series. Σ⁴ n=1 (2/3)ⁿ⁻¹

Answers

Sn = a(1 - rⁿ)/(1 - r) is the formula for the sum of a finite number of terms in a geometric series, where is the number of terms, is the first term, and is the common ratio.

The sum of the finite geometric series, Σ⁴ n=1 (2/3)ⁿ⁻¹ be 2.407.

What is meant by finite geometric series?

The equation be Sn = a(1 - rⁿ)/(1 - r), where s is the total, a1 is the series's first term, and r is the common ratio, is a general formula for calculating the sum of an finite geometric series. The formula a2/a1, where a2 is the second term in the series and a1 is the first term in the series, can be used to determine the common ratio.

Let the series be Σ⁴ n=1 (2/3)ⁿ⁻¹

Σ⁴ n=1 (2/3)ⁿ⁻¹ = (2/3)¹⁻¹ + (2/3)²⁻¹ + (2/3)³⁻¹ + (2/3)⁴⁻¹

= 1 + (2/3) + (2/3)² + (2/3)³

= 1 + (2/3) +(4/9) +(8/27)

Where, the first term is a = 1

common ratio be r = 2/3

n th term be n = 4

Let the equation be Sn = a(1 - rⁿ)/(1 - r)

substitute the values in the above equation, we get

S4 = 1(1 - (2/3)⁴)/(1 - (2/3))

S4 = 1(1 - (16/81)⁴)/(1/3)

S4 = (65/81) × 3

S4 = (65/27) = 2.407

Therefore, the sum of the finite geometric series, Σ⁴ n=1 (2/3)ⁿ⁻¹ is 2.407.

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11
Collaborato
05 Use Math Tools Work with a partner, if the
the figure at the right is 40", determine the me
angle without using a protractor.

Answers

Answer:

1) 140°

2) 40°

3) 140°

4) 40°

5) 140°

6) 40°

7) 140°

Step-by-step explanation:

1) Angles on a straight line = 180°

180° - 40° = 140°

2) Angle 3 is Vertically opposite to Angle 1

So they are the same Angle

3) Angle 4 is Vertically opposite to Angle 2

So they are the same Angle

4) Angle 5 is corresponding to Angle 1

So they are the same angle

5) Angle 6 is corresponding to Angle 2

So they are the same angle

6) Angle 7 is corresponding to Angle 3

So they are the same angle

7) Angle 7 is corresponding to Angle 4

So they are the same angle

Write the following quantities in second .
5•10⁷ µs​

Answers

The value of 5•10⁷ µs​ quantity in second is 50 .

The unitary methodology could be a methodology within which you discover the worth of a unit then the worth of a needed range of units.For simplification, invariably write the items to be calculated on the right-hand aspect and things illustrious on the left-hand aspect.In the unitary method, the value of many things is given and we need to either find the value of more or fewer things. In order to try to to that, we have a tendency to should initial realize the worth of 1 issue by division so realize the worth of additional or fewer things by multiplication.

We know that 10⁶μs is equal to 1 second .

Using unitary method , we get

 1 μs have = 10⁻⁶ second

 5•10⁷ µs​ have = 5 × 10⁷ × 10⁻⁶

                        = 50 second

 

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State whether the sentence is true or false. If false, replace the underlined word or number to make a true sentence.
Angles 1 and 7 are alternate exterior angles.

Answers

The statement "∠1 and ∠7 are alternate exterior angles" is true

Given,

The statement "∠1 and ∠7 are alternate exterior angles"
Here,

∠1 and ∠7 are lie on opposite sides of the transversal and both are nonadjacent exterior angles

So, ∠1 and ∠7 are alternate exterior angles.

Hence, the statement  "∠1 and ∠7 are alternate exterior angles" is true

The complete question is:

State whether the sentence is true or false. If false, replace the underlined word or number to make a true sentence.

Angles 1 and 7 are alternate exterior angles.

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Can y’all help me please

Answers

Step-by-step explanation:

least value is q

greatest value is n-q

close to zero is q-n

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.


Write

3 2/3

as an improper fraction. You must show your work to receive all possible points.

Answers

The fraction converted to an improper fraction is 11/3

What is an improper fraction?

An improper fraction can be defined as a type of fraction whose numerator is equal to or is greater than its denominator.

Examples of improper fractions are;

5/ 3, 8/2 , 11/ 7, 20/ 5, 4/ 1, 2/ 2, 5/ 3

Given the fraction;

3 2/3; this is a mixed fraction

To convert to improper fraction, we take the steps

Multiply the whole number by the denominator;

= 3 × 3 = 9

Add the value to the numerator

= 9 + 2 = 11

Divide by the denominator

= 11/ 3

Thus, the fraction 3 2/3 converted to an improper fraction is 11/3

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Segment AB has coordinates A (-6, 13) and B (10, -7). Find the distance from A to B and the midpoint of AB.

Answers

Answer:

Distance: 4√41

Midpoint: (2, 3)

Step-by-step explanation:

A: (-6, 13) B: (10, -7)

    (x₁, y₁)       (x₂, y₂)

d = √(x₂ - x₁)² + (y₂ - y₁)²

d = √(10 - (-6))² + (-7 - 13)²

d = √(16)² + (-20)²

d = √256 + 400

d = √656

d = √16 × 41

d = 4√41

midpoint:

(x₁ + x₂)    (y₁ + y₂)

---------- , ------------

    2            2

(-6 + 10)   (13 + (-7))

---------- , ------------

    2            2

   4             6

---------- , ------------

    2            2

Midpoint = (2, 3)

I hope this helps!

The vertex of a parabola is (−2, 6) and its y-intercept is (0, 2). The parabola is the boundary of a quadratic inequality. The boundary is drawn with a dashed line, and the interior of the parabola is shaded.

Answers

The compound inequality in this problem is represented by:

y > -(x + 2)² + 6.

What is the equation of a parabola given it’s vertex?

The equation of a quadratic function, of vertex (h,k), is given by:

y = a(x - h)² + k

In which a is the leading coefficient.

For this problem, the vertex is at (-2,6), hence:

h = -2, k = 6.

y = a(x + 2)² + 6.

When x = 0, y = 2, hence we use it to find a as follows:

2 = 4a + 6

a = -1.

Hence:

y = -(x + 2)² + 6.

The inequality is the interior of the parabola, hence values greater, and the parabola is dashed, hence it is an open interval and the inequality is given by:

y > -(x + 2)² + 6.

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Determine a series of transformations that would map polygon ABCD ento polygon
ABCD?
origin

Answers

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Two similar pyramids have slant heights of 6 inches and 12 inches. What is the ratio of the surface area of the small pyramid to the surface area of the large pyramid?

Answers

    The Volume of the requested pyramid is 68.5 in³.

What is the scalar factor?

  The scale factor is a dimensionless number that allows us to relate dimensions in figures, it is also known as numerical ratio or proportion.

   We must determine the scale factor with the data of the inclined heights of each of the pyramids:

a/b = slant height (small) / slant height (large) =  6/12 = 3/6 = 1/2a/b = 1/2

  If the scale factor is a/b, the reason of the volume will be:;

(a/b)³ = 1/8

1/8 = V/540

V = 1/8 x 540

V = 68.5

V = 68.5in³

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Tanya bought the least expensive brand of dog food. Eddie bought the most expensive brand of dog food. Which brand did each person buy?

Answers

Tanya - Iams ProActive Lamb & Rice

Eddie - Ultimate Pet Nutrition Nutra Complete

put them in order from least to greatest: 2.5 6.7 6.9 7.5 1.8 1.6

Answers

Answer: 1.6,1.8,2.5,6.7,6.9,7.5

Step-by-step explanation:

Step-by-step explanation:

1.6 1.8 2.5 6.7 6.9 7.5

was that really all ? I don't see any trap in these numbers, so this is straight forward.

point C is on a line segment BD .Given BD = 5x , BC = 4x and CD = 4 determine the numerical length of BD

Answers

The numerical length of BD is 20.

We have a Line Segment BD and a point C on it.

We have to determine the numerical length of BD.

What is Line Segment?

A line segment is a piece or part of a line having two endpoints. Unlike a line, a line segment has a definite length.

According to question, we have -

BD = 5x

BC = 4x

CD = 4

Now,

BD = BC + CD

5x = 4x + 4

x = 4

Therefore - BD = 5x = 5 x 4 = 20

Hence, the numerical length of BD is 40.

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PLEASE HELP
PLEASE SHOW HOW U CHECKED UR WORK

also show regular work

Answers

Answer:

k = -10

Step-by-step explanation:

1) Because of the division of the left side of the equation by 2, multiply both sides of the equation by 2, which means you now have :

-8 - 3k = 22

2) Now, add eight to both sides. Your equation now looks like this:

-8 + 8 - 3k = 22 + 8

3) Simplify.

-3k = 30

4) You now have k = -10

What is 1 5/17 as a decimal

What is 2 3/8 as a decimal

Answers

Answer:69999

Step-by-step explanation:your gay

1 5/17 ——-> 0.882

2 3/8 ———> 2.375

to turn a fraction into a decimal, divide the numerator by the denominator.

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Answers

Your answer would be the second one.

We know that adding [tex]\frac{1}{2}[/tex] to x gives us 4, as that's provided by the question.

So [tex]4=x+\frac{1}{2}[/tex]. Now, to find x, simply subtract [tex]\frac{1}{2}[/tex] from 4 to give us x, which gives us [tex]3\frac{1}{2}[/tex].

Derek paid $3.20 for a 4 pack of Gatorade.
What is the cost per bottle?

Answers

3.20/4 = $0.80 or 80 cents

Answer:

80¢ / 80cents

Step-by-step explanation:

80¢ is your answer because Derek paid $3.20 for a pack of 4 Gatorade so you would have to divide $3.20 by 4 which will be 80¢

So your answer would be 80¢ per bottle.


Determine whether ΔP Q R ≅ ΔX Y Z . (Lesson 4-4)
P(-3,-3), Q(-5,1), R(-2,6), X(2,-6), Y(3,3) Z(5,-1)

Answers

We can conclude that triangle ΔPQR ≇ ΔXYZ.

What exactly do we mean by the congruency of a triangle?If all three corresponding angles are equal and all three corresponding angles are equal in measure, two triangles are said to be congruent.These triangles can be moved, rotated, flipped, and turned to look exactly the same.They will coincide if they are repositioned.Two triangles are congruent if they satisfy the five congruence conditions.They are the side-side-side (SSS), the side-angle-side (SAS), the angle-side-angle (ASA), the angle-angle-side (AAS), and the right angle-hypotenuse-side (RHS).

So,

Given: P(-3,-3), Q(-5,1), R(-2,6), X(2,-6), Y(3,3), Z(5,-1)

To find if ΔPQR ≅ ΔXYZ

Q = Z = (5,-1)R = X = (2,-6)P(-3,-3) ≠ Y(3,3)

So, ΔPQR ≇ ΔXYZ.

Therefore, ΔPQR ≇ ΔXYZ.

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Gary count these items on his desk

4 pencils
12 markers
24 crayons

Answers

The ratio of pencils to all the item on the desk is 1 : 10

According to Gary,

    Number of pencils on the desk = 4

    Number of markers on the desk = 12

   Number of crayons on the desk = 24

Total number of item son the desk = 4 + 12+ 24

                                                             = 40

The ratio of pencils to all the item is given as = (number of pencils)/(total number of items)

                                                                                = 4/40

                                                                                = 1/10

                       Which in ratio can be written as 1 : 10

Thus the ratio of pencils to all the item is 1 : 10  

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