Find the value of x in each case. Give reasons to justify your solutions! NEEDED ASAP

Answer:

infinitely many solutions

Step-by-step explanation:

Given the 2 equations

2x + 2y = 18 → (1)

x + y = 9 → (2)

Equation (1) is twice (2)

Thus the equations are equal and will have infinite solutions

C and F

....................

Answer:

B. 2 <3 and C. 4 + 3 = 7 and F. 5-d = 9

Answer:

B

Step-by-step explanation:

Using the rule of radicals

[tex]\sqrt{a}[/tex] = [tex]a^{\frac{1}{2} }[/tex]

Thus

([tex]\sqrt{a}[/tex] )² = [tex]a^{\frac{1}{2} }[/tex] × [tex]a^{\frac{1}{2} }[/tex] = [tex]a^{(\frac{1}{2}+\frac{1}{2}) }[/tex] = [tex]a^{1}[/tex] = a → B

Hey!!!

Range={y:y=-7,-2,3,8}

The right answer is of option B.

Explanation:

The set of second components or the set of elements of B are called the range.

Hope it helps...

Good luck on your assignment..

Stay safe....

Answer:

It is "B", on edge.

Step-by-step explanation:

hope it helps!

Answer:

one solution

Step-by-step explanation:

it means when the denominator does not equal zero

Sorry wrong question delete this awnser

Answer:

8/15

Step-by-step explanation:

15 options and 8 odd numbers

Answer: 9/14

Step-by-step explanation:

There are 3 blue cards, 3 odd numbered red cards, and 3 odd numbered green cards. 3 + 3 + 3 = 9

Red - R1, R2, R3, R4, R5

Blue - B1, B2, B3

Green - G1, G2, G3, G4, G5, G6

= A total of 14 cards

Answer = 9/14

(This answer is verified and was the correct answer in the program)

Answer:

∠ FAB = 75°

Step-by-step explanation:

The external angle of a triangle is equal to the sum of the 2 opposite interior angles.

∠ FAB is an external angle, thus

13x - 3 = 3x + 2 + 55 = 3x + 57 ( subtract 3x from both sides )

10x - 3 = 57 ( add 3 to both sides )

10x = 60 ( divide both sides by 10 )

x = 6

Thus

∠ FAB = 13x - 3 = 13(6) - 3 = 78 - 3 = 75°

Answer:

1

Step-by-step explanation:

(3²-2³)⁶⁶ = (9 - 8)⁶⁶ = (1)⁶⁶ = 1

(3²-2³)⁶⁶ total​ is 1

To evaluate (3²-2³)⁶⁶, we will first simplify the expression we have in the bracket before carrying out the power operation

From (3²-2³)⁶⁶

(3²-2³) can be simplified as shown below

3² = 3 × 3 = 9

and

2³ = 2 × 2 × 2 = 8

∴ (3²-2³) = (9 - 8) = (1)

∴ (3²-2³)⁶⁶ becomes (1)⁶⁶

(1)⁶⁶ = 1

(NOTE: 1 raised to any power is 1)

Hence, (3²-2³)⁶⁶ total​ is 1

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Answer:

median                                              2nd was the answer

Step-by-step explanation:

Answer:

the result of adding these two equations is

3x = 14

Step-by-step explanation:

We are given two equations

5x − y  = 6          eq. 1

−2x + y = 8        eq. 2

Add the like terms together

5x - 2x = 3x

− y + y = 0

6 + 8 = 14

So the result of adding these equations is

3x + 0 = 14

3x = 14

Bonus:

The value of x is

3x = 14

x = 14/3

Answer:

3x = 14

Step-by-step explanation:

It worked on khan

Answer:

C) [tex]1\frac{6}{100}[/tex]

Step-by-step explanation:

Hope this helps!

Answer:

m=45h

Step-by-step explanation:

The independent variable here is h, the number of hours it traveled, and this determines m.

Answer:

The answer is 3:6 for above probability

Answer:

€800 = $1200

New exchange rate =

750/1200 = 1.6

this is false not all equations and all equations are identities are same

Answer:

Yes you would need to regroup in the tens place because 3 is less than 6.

Answer:

Yes you would need to regroup in the tens place because 3 is less than 6.

Have a great day

Answer:

a). 2 meters

b). 0.25 meters per week

c). 1.25 meters

Step-by-step explanation:

Thickness of the ice sheet on the lake = 2 meters

Thickness decreases with a constant rate and thickness is modeled by the function,

h(t) = 2 - 0.25t  [t = time or duration in weeks]

a). Initial value of this function will be it's y-intercept,

h(t) = 2 meters

b). Rate of the melting of this sheet  (slope of the line) = 0.25 meter per week

c). After 3 weeks or t = 3 weeks,

h(3) = 2 - 0.25 × (3)

      = 2 - 0.75

      = 1.25 meters

Answer:

I say the inequality with the greater than or equal

Step-by-step explanation:

They want to reach there goal so it’s more or equal to

The entire figure could be taken as a trapezium

A=1/2h(a+b)

h=8, a=6 and b=10

A=1/2×8(6+10)

A=4×16

A=64sq Inch

Answer:

128 or 56

Step-by-step explanation:

(8 X 10) + (6 X 6)

 80       +      48 = 128

OR

No 10 eliminate it because it on the line

8 X (6 X 6) = 48 + 8 = 56

Answer:

45

Step-by-step explanation:

if it is a square then all angles are 90 degrees. the line halfs them all meaning 90/2=45

Answer:

Step-by-step explanation:

Diagonals of square bisect the angles ∠D,∠E, ∠F & ∠G

And we know ∠D = 90

∠2 = 90/2= 45

Answer:

x≅11.49 or x=2√33

Step-by-step explanation:

8^2+x^2=14^2

64+x^2=196

(subtract 64 from both sides)

x^2=132

(square root both sides)

x≅11.49

Answer and Step by Step explanation:

3. 7(1.5) + 2(4) + 3(6.5) + 5(7)

  = 10.5 + 8 + 19.5 + 45

  = 83 grams of salt

You look at the x-axis of the graph and that is the amount of grams of salt, and the dots represent one container. So you multiply the number of dots (containers) by the amount of grams (stated on the number line).

4. 83 x 2

  = 166 grams of salt

This is because you already solved how much one of each container would be in the last question (question 3), so you would just have to multiply it my 2 to get the answer.

1.92559524e+14

Step-by-step explanation:

6.47 x 10^-15 and 3.36 x 10^-29 are written in scientific notation. In this way, we have a quotient of two numbers written in scientific notation. To solve this problem, we have:

6.47/3.36 x 10^{[-15-(-29)]}=1.92559524 x 10^{(-15+29)}

Therefore 1.92559524 x 10^{14}  or 1.92559524e+14

1.92559254e+ 14 is the correct value of the given expression.

The term "operation" in mathematics refers to the process of computing a value utilizing operands and a math operator. For the specified operands or integers, the math operator's symbol has predetermined rules that must be followed. In mathematics, there are five basic operations: addition, subtraction, multiplication, division, and modular forms.

given a number  6.47x10^-15/3.36x10^-29

Solving this given number using PEMDAS

=> 6.47x10^-15/3.36x10^-29

=> (6.47 * 10⁻¹⁵) / (3.36 * 10⁻²⁹)

=> (6.47 / 3.36) * 10⁻¹⁵ ⁺ ²⁹

=> 1.92559254 * 10¹⁴

in Scientific notation:

=> 1.92559254e+ 14

therefore, the correct value of the given expression is 1.92559254e+ 14.

Learn more about Mathematical operations here:

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Answer:

8:3=32:x

Hope thos helps you

Answer:

hmm i think its answer B hope i helped :)

Step-by-step explanation:

Answer:

4n+20

Step-by-step explanation:

Answer:

0.97087

Step-by-step explanation:

Given the function:

[tex]f(x) = e^{2x} - x - 6[/tex]

Its first derivative is:

[tex]f'(x) = 2e^{2x} - 1[/tex]

Using Newton's method:

[tex]x_{n+1} = x_n - \frac{f(x_n)}{f'(x_n)}[/tex]

and starting with the point:

[tex]x_1 = 0.95[/tex]

we get:

[tex]f(x_1) = e^{2(0.95)} - 0.95 - 6 = -0.26410[/tex]

[tex]f'(x_1) = 2e^{2(0.95)} - 1 = 12.37178[/tex]

[tex]x_2 = x_1 - \frac{f(x_1)}{f'(x_1} = 0.95 - \frac{-0.26410}{12.37178} = 0.97134[/tex]

[tex]f(x_2) = e^{2(0.97134)}- 0.97134 - 6 = 0.00608[/tex]

[tex]f'(x_2) = 2e^{2(0.97134)} - 1 = 12.95485[/tex]

[tex]x_3 = 0.97134 - \frac{0.00608}{12.95485} = 0.97087[/tex]

[tex]f(x_3) = e^{2(0.97087)} - 0.97087 - 6 = -2.6240413 \cdot 10^{-7}[/tex]

Answer:

True

Step-by-step explanation:

In Functions and Function Notation, we were introduced to the concepts of domain and range. In this section, we will practice determining domains and ranges for specific functions. Keep in mind that, in determining domains and ranges, we need to consider what is physically possible or meaningful in real-world examples, such as tickets sales and year in the horror movie example above. We also need to consider what is mathematically permitted. For example, we cannot include any input value that leads us to take an even root of a negative number if the domain and range consist of real numbers. Or in a function expressed as a formula, we cannot include any input value in the domain that would lead us to divide by 0.

Diagram of how a function relates two relations.

Figure 2

We can visualize the domain as a “holding area” that contains “raw materials” for a “function machine” and the range as another “holding area” for the machine’s products.

We can write the domain and range in interval notation, which uses values within brackets to describe a set of numbers. In interval notation, we use a square bracket [ when the set includes the endpoint and a parenthesis ( to indicate that the endpoint is either not included or the interval is unbounded. For example, if a person has $100 to spend, he or she would need to express the interval that is more than 0 and less than or equal to 100 and write

(

0

,

1

0

0

]

(0, 100]. We will discuss interval notation in greater detail later.

Let’s turn our attention to finding the domain of a function whose equation is provided. Oftentimes, finding the domain of such functions involves remembering three different forms. First, if the function has no denominator or an even root, consider whether the domain could be all real numbers. Second, if there is a denominator in the function’s equation, exclude values in the domain that force the denominator to be zero. Third, if there is an even root, consider excluding values that would make the radicand negative.

Before we begin, let us review the conventions of interval notation:

The smallest term from the interval is written first.

The largest term in the interval is written second, following a comma.

Parentheses, ( or ), are used to signify that an endpoint is not included, called exclusive.

Brackets, [ or ], are used to indicate that an endpoint is included, called inclusive.

The table below gives a summary of interval notation.

Summary of interval notation. Row 1, Inequality: x is greater than a. Interval notation: open parenthesis, a, infinity, close parenthesis. Row 2, Inequality: x is less than a. Interval notation: open parenthesis, negative infinity, a, close parenthesis. Row 3, Inequality x is greater than or equal to a. Interval notation: open bracket, a, infinity, close parenthesis. Row 4, Inequality: x less than or equal to a. Interval notation: open parenthesis, negative infinity, a, close bracket. Row 5, Inequality: a is less than x is less than b. Interval notation: open parenthesis, a, b, close parenthesis. Row 6, Inequality: a is less than or equal to x is less than b. Interval notation: Open bracket, a, b, close parenthesis. Row 7, Inequality: a is less than x is less than or equal to b. Interval notation: Open parenthesis, a, b, close bracket. Row 8, Inequality: a, less than or equal to x is less than or equal to b. Interval notation: open bracket, a, b, close bracket.

Answer:

For  [tex]f(x)=6(x-5)^2-9[/tex]   the vertex is: (5, -9)

For  [tex]f(x)=9(x+5)^2-6[/tex]  the vertex is: (-5, -6)

For  [tex]f(x)=5(x-6)^2+9[/tex]  the vertex is: (6, 9)

For  [tex]f(x)=6(x+9)^2-5[/tex]  the vertex is: (-9, -5)

For  [tex]f(x)=9(x-5)^2+6[/tex]  the vertex is: (5, 6)

Step-by-step explanation:

Let's identify the vertex pair [tex](x_v,y_v)[/tex] from each equation:

A)  [tex]f(x)=6(x-5)^2-9[/tex]  corresponds to [tex]x_v=5\,\,\,and\,\,\,y_v=-9[/tex] , that is: (5, -9)

B)  [tex]f(x)=9(x+5)^2-6[/tex]  corresponds to [tex]x_v=-5\,\,\,and\,\,\,y_v=-6[/tex] , that is: (-5, -6)

C)  [tex]f(x)=5(x-6)^2+9[/tex]  corresponds to [tex]x_v=6\,\,\,and\,\,\,y_v=9[/tex] , that is: (6, 9)

D)  [tex]f(x)=6(x+9)^2-5[/tex]  corresponds to [tex]x_v=-9\,\,\,and\,\,\,y_v=-5[/tex] , that is: (-9, -5)

E)  [tex]f(x)=9(x-5)^2+6[/tex]  corresponds to [tex]x_v=5\,\,\,and\,\,\,y_v=6[/tex] , that is: (5, 6)