If a = b then a - c = b - c. This is the ________ property of equality.

The required evaluation of a - c when a = 20.9 and c = 12.8 is 33.7. Option A is correct.

Given that,
To evaluate a - c when a = 20.9 and c = -12.8.

In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication, and division.

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

Here,
The given expression,
= a - c
a = 20.9 and c = -12.8.
= 20.9 - (-12.8)
= 20.9 + 12.8
= 33.7

Thus, the required evaluation of a - c when a = 20.9 and c = 12.8 is 33.7. Option A is correct.

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Answer:

[tex](x+4)(x+1)[/tex]

Step-by-step explanation:

the formula is

[tex](x+a)(x+b)=x^{2}+(a+b)x+ab[/tex]

so

a+b=5

ab=4

so the possible values are

a=1 b=4

a=4 b=1

we have

[tex](x+4)(x+1)\\\\(x+1)(x+4)[/tex]

it's the same

so the factor

[tex](x+4)(x+1)[/tex]

Answer:

44

Step-by-step explanation:

2 x 7 + 6 x 5

Multiply first

14 + 30

Then add

44

Answer:

$44

Step-by-step explanation:

Multiplication (from left to right) comes before addition.

Answer:

15. 2/6 or 1/3

18. 3/6 or 1/2

21. 25/26

29.

a- 1/12

50/600

b- 22/100

132/600

Step-by-step explanation:

The first ones are self explanatory lol.

to find the ones for 29, i just multiplied divided 12 by 600 and got 50 so that was my numerator and on the 2nd one i just multiplied 22 by 6 to get 132 because the denomenator is 600.

Answer:

3 times 10 Superscript 9 feet

Step-by-step explanation:

your welccome

The feet the jet would fly in the given time is 3 x [tex]10^{9}[/tex].

Multiplication is the process of determining the product of two or more numbers by following a set of mathematical principle.

The feet travelled can be determined by multiplying the rate per hour by the total time.

1.3 x 10^3 x 2.8 x 10^6 = 3 x 10^9

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First, we need a few things.

The first term = 26

The common difference = 22 - 26 = -4

26 - 4(n - 1) is our equation.

Let's plug 50 into n to find a50

a50 = 26 - 4(50 - 1)

a50 = 26 - 4(49)

a50 = 26 - 196

a50 = -170

Answer:

First one: Even

Second one: Neither

Third One: Odd

Fourth One: Neither

Step-by-step explanation:

The functions are:

a) f(x) = x² + 9 is neither even nor odd.

b) g(x) = |x - 3| is neither even nor odd.

c) f(x) = x is an odd function.

d) g(x) = x + x² is neither even nor odd.

Here, we have,

To determine whether each function is even, odd, or neither, we examine their symmetry properties under reflection about the y-axis (for even functions) and the origin (for odd functions).

Let's analyze each function:

a) f(x) = x² + 9

This function is neither even nor odd because it does not satisfy the properties of symmetry under reflection about the y-axis or the origin.

b) g(x) = |x - 3|

This function is neither even nor odd because it does not satisfy the properties of symmetry under reflection about the y-axis or the origin.

c) f(x) = x

This function is odd because it satisfies the property of symmetry under reflection about the origin. In other words, f(-x) = -f(x) for all x.

d) g(x) = x + x²

This function is neither even nor odd because it does not satisfy the properties of symmetry under reflection about the y-axis or the origin.

In summary:

a) f(x) = x² + 9 is neither even nor odd.

b) g(x) = |x - 3| is neither even nor odd.

c) f(x) = x is an odd function.

d) g(x) = x + x² is neither even nor odd.

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Answer:

The measure of x is 23 degrees

Step-by-step explanation:

Here, given the values of the angles of a polygon and the total of these angles, we want to find the value of the variable x attached to these angles;

Mathematically;

85 + 5x + 5x + 5x + 5 + 5x -10 = 540

85 + 5 -10 + 5x + 5x + 5x + 5x = 540

80 + 20x = 540

20x = 540-80

20x = 460

x = 460/20

x = 23 degrees

Answer:

Huh. More info please.

Step-by-step explanation:

Answer:

9 sides

Step-by-step explanation:

Originally Answered: The measure of each interior angle of a regular polygon is 140 degrees. How many sides does a regular polygon have? this means that each slice covers an angle of 180-140=40 degrees with redpect to the polygon centre. hence there are 9 sides.

Answer:

A regular polygon with an exterior angle measure of 140 degrees has nine sides

26.= 6000ft.

1.convert the yards to feet 100 yards= 300 ft

2. to find the area multiply the 20 ft by 300 ft

3. answer is 6000 ft

4 . if the answer needs to be in yards use a converter to convert the feet to yards

Answer: 3 days

Step-by-step explanation:

25d + 60 = 45d

60 = 20d

3 = d

Check work:

25(3) + 60 = A

75 + 60 = A

135 = A

45(3) = B

135 = B

Answer:

It looks like B is the correct answer

m<1 is 130 like the other

Answer:5

Step-by-step explanation:

25 miles divided by 5 days equal the 5 miles

5 times 5 =25

Answer:

5/8 + 7/12 =29/24

Step-by-step explanation:

Answer:

(3,1)

Step-by-step explanation:

let B be (x,y)

m(1,3)=midpoint

A(-1,5)=(x1,y1)

B(x,y)=(x2,y2)

(1,3)= x1+x2/2          y1+y2/2

(1,3)= -1+x/2           5+y/2

so,

-1+x/2=1              5+y/2=3

-1+x=2                 5+y=6

x=3                      y=1

therefore the co ordinates of B(x,y) are (3,1)

The co-ordinate points of B is (3,1)

A midpoint in a given line segment divides the line segment in two equal parts.

In the given question

AB is a line segment.

Point A has co-ordinates (-1,5) and midpoint M has co-ordinates (1,3).

Assuming point B has co-ordinates (x,y)

We know midpoint formula is give by

M of x  = (x₁ + x₂)/2 and M of y = (y₁ + y₂)/2

∴ 1 = (-1 + x₂)/2

 2 = - 1 +x₂

 x₂ = 3

And

3 = ( 5 + y₂)/2

6 = 5 + y₂

y₂ = 1

So the co-ordinate points of B(x₂,y₂) = (3,1)

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Answer:

p = -2

Step-by-step explanation:

5p - 10 = + 4(1 + 3p)

first get rid of the bracquetes:

5p - 10 = + 4*1 + 4*3p

5p - 10 = + 4 + 12p

subtract left and right of = sign by 5p

5p -5p - 10 = + 4 + 12p -5p

0 - 10 = + 4 + (12p -5p)

subtract left and right of = sign by 4

-10 -4 = 4 -4 + ( 7p )

re arrange

7p + 0 = -14

divide left and right of = sign by 7

7/7 p = -14/7

p = -2

Answer:

[tex] - 2[/tex]

Step-by-step explanation:

Hope this is correct and helpful

HAVE A GOOD DAY!

a+b=90°

a=b+44°

b+44°+b=90°

2b+44°=90°

2b=90°-44°

2b=46°

b=23°

a=23°+44°

a=67°

The measure of each angle is 23° and 67°.

Angle is defined as the figure formed by the meeting of two lines or rays at a common point.

Complementary angles are those angle whose angle measures sum up to 90°.

Given that two angles are complementary and one of the angle's measure is 44° less than the measure of other one.

Let x be the measure of first angle.

Then x - 44 is the measure of the other angle.

x + (x - 44) = 90°

2x - 44 = 90

2x = 90 + 44

2x = 134

x = 134 / 2

x = 67

One of the measure of angle is 67°.

Measure of other angle = x - 44 = 67 - 44 = 23°

Hence the angle measures are 23° and 67°.

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Answer:

How do you explain a linear equation?

The definition of a linear equation is an algebraic equation in which each term has an exponent of one and the graphing of the equation results in a straight line. An example of linear equation is y=mx + b. "Linear equation."

Step-by-step explanation:

In mathematics, a linear equation is an equation that may be put in the form where are the variables, and are the coefficients, which are often real numbers. The coefficients may be considered as parameters of the equation, and may be arbitrary expressions, provided they do not contain any of the variables.

Answer:

96,000

Step-by-step explanation:

.8 x 120,000 = 96,000

mueves el decimal sobre el porcentaje que deseas encontrar, luego lo multiplicas por el total. por ejemplo quiere 80% entonces mueves el decimal para que sea .8 o si quierias 55% entonces es .55 y el total es el 120,000 el numero que tienes. (:

Answer:96000

Step-by-step explanation:

120000/x=100/80

(120000/x)*x=(100/80)*x       - we multiply both sides of the equation by x

120000=1.25*x       - we divide both sides of the equation by (1.25) to get x

120000/1.25=x  

96000=x  

x=96000

Answer:

m= 1 / 2

Step-by-step explanation:

Using a graph calculator

Answer:

option 3.

Step-by-step explanation:

48s + 4.75

Answer:30

Step-by-step explanation:

Answer:

30

Step-by-step explanation:

Why!

let x = number of slices sold

let y= number of pizzas sold

If you need to make a profit of at least 140 then you have to make what you paid + what you want = $320+$140 = $460

x= (40-y)8 = 320-8y  : 40 is the number of pizza they bought &each pizza has 8 slices

2x + 10y  ≥ 460

2 (320-8y) + 10≥460

Just solve it

180≥6y

30≥y

Therefore the greatest number of pizzas you can sell is 30 to make at least $140                                                                          

Answer:

18

Step-by-step explanation:

Product in math terms means to multiply

When the term "a number" is used, you can just put a variable

"Is," tells you what the problem equals

With this information, we can create the equation:

(2/3x) + 6 = 12

Now that we have this equation, we can solve it

(2/3x) +6 = 12            We can subtract 6 from both sides.  

            -6     -6

2/3x = 12                   We can divide the 2/3 from each side.

/2/3         /2/3

x = 18

Hope this helps!

Answer:

1

Step-by-step explanation:

2/3x + 12 = 6

2/3x = -6

x = -6 divided by 2/3

(6 divided 2) divided 3 =1

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Answer:

133

Step-by-step explanation:

133 - 18 + 65 = 180

Answer:

B

Step-by-step explanation:

because the denominator of fraction, 5/12 ,is greater than both the numerator and the multiplier which is 7

Answer:

y=-5/2x+(Any number)

Step-by-step explanation:

First, find the slope of that line

3+2=5

-5+7=2

5/2 is the slope

Perpendicular lines have the slope that is opposite and a fliped sign

This means that the slope should be -2/5

The equation of the line would be y=-5/2x+(Any number)

Answer:

Yes,its Rational

Step-by-step explanation:

it is nothing but 58/10

Answer:

Rational number not irrational number

Answer:

Issac worked 24.4 hrs, Ruby worked 31.4 hrs, and George worked 94.2 hours

Step-by-step explanation:

x= hours worked

Issac= x Ruby= (x+7) George= 3(x+7)

x+(x+7)+3(x+7) = 150 [distribute 3 to (x+7)]

x+(x+7)+(3x+21) = 150 [add from left to right]

5x+28 = 150 [subtract 28 from both sides]

5x = 122 [divide both sides by 5]

x=24.4

Now plug the x value back into Issac, Ruby, and George's equations:

Issac=x=24.4

Ruby=x+7=31.4

George=3(x+7)=94.2

Double check by adding all their work hours together

24.4+31.4+94.2=150!!