Using substitution method, solve
3x-y=0
2x+y=5

The resulting expression if the value of t is 23 is g(23) = -4g - 207

A function is an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).

Given the function below;

g(t)=−9t−4g

We are to determine the value of g(23). Substitute t = 23;

g(t)=−9t−4g

g(23) = -9(23) - 4g

g(23) = -207 - 4g

g(23) = -4g - 207

Hence the resulting expression if the value of t is 23 is g(23) = -4g - 207

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Step-by-step explanation:

5 digit number

5abcd

a = 2 or a = 3. but a = 3 means the upper limit of 53,000. and the sum of digits is 8 and not 21.

so, a = 2.

d = 3n

c = b

5 + a + b + c + d = 21

5 + a + 2b + 3n = 21

a + 2b + 3n = 16

2 + 2b + 3n = 16

2b + 3n = 14

so, n must be an even number to allow an even result (14). therefore, n = 0 or n = 2 (any larger even number n like 4 would not create a single digit result)

if n = 0, then 2b = 14, b = 7

if n = 2, then 2b + 6 = 14, 2b = 8, b = 4

so, we have the options

52770

52446

I suspect that 0 as 0×3 is not considered a multiple of 3 by your teacher, so only n = 2 (or d = 6) is a desired solution.

therefore, I would use

52446

as answer.

The least integer greater than each number for log₅1/47 = -3

All whole numbers and negative numbers are considered integers. This means that if we combine negative numbers with whole numbers, a collection of integers results.

Let y = log₅1/47

We know, logₐ x = y, only if a^y= x

Therefore, 5^y = 1/47

So, we must find an integer y such that 5 > 1/47

5^y > 1/47

5^{-3} > 1/47

(As, 5² = 25; 5³ = 125) (Since, 5² < 47, the answer will be 5³ as 5³ > 47)In this case, y = -3 will be the least integer to satisfy this inequality.

Therefore, the ultimate answer to the equation is log₅1/47 = -3

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Explanation:

The given equation is in the form of ax^2+bx+c = 0

The coefficients are

According to Vieta's formula, we know that the roots of a quadratic multiply to c/a

In this case, the roots multiply to -3/2

Let p and q be the two roots. We're told that -3 is one of the roots, so p = -3. Let's find q.

pq = c/a

-3q = -3/2

q = (-3/2)*(-3/1)

q = 1/2

q = 0.5

The other root is 0.5

The product of the roots is -3*0.5 = -1.5 = -3/2 to confirm the answer.

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The longer way to solve would be to plug x = -3 into the equation and solve for k. You should get k = 5

Once you know the value of k, use the quadratic formula to find the two roots. You should get -3 and 1/2 = 0.5 as the two roots.

The result of simplifying each number 100⁴.⁵  using the exponent rules is

10⁽⁴⁰⁾

To solve this exercise we have to resolve algebraic operations following the exponent rules.

100⁴.⁵

Base= 100 =  10²

The base number 100 is the same that: 10², then we get:

(10²)⁴.⁵

Using the power of a power rule that indicates that: the exponent result will be the multiplication of these exponents, we have:

10⁽²*⁴*⁵⁾

10⁽⁸*⁵⁾

10⁽⁴⁰⁾

In mathematics an exponent is the number of time that a number, called (base) is multiplied by itself. It is also called, power or index.

Example: 3² = 3*3 = 9

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Answer:

[tex] a_{1} = 5[/tex]

Step-by-step explanation:

check the attached image for explanation

A) The roots of the graph f(x) are;  x = -2 and x = -1

B) The value of the function at f(0) is; 2

a) We want to find f(0) of the graph.

Now, f(0) simply refers to the y-values when x = 0.

This is the point at which the graph crosses the y-axis

From the graph we can see that the value here is 2. Thus;

f(0) = 2

b) To find the roots of f(x) , we simply find the points at which the plot crosses the x-axis.

From the graph, the roots are at x = -2 and x = -1

Thus, the roots of the equation are x = -2 and x = -1

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The ratios of y/x are the same for the graph of y = -4x and y = -4x + 2 because they both represent parallel lines.

Parallel lines can be defined as two (2) lines that are always the same (equal) distance apart and never meet.

In Geometry, two (2) lines are considered to be parallel if their slopes are the same (equal) and they've different y-intercepts. This ultimately implies that, two (2) lines are parallel under the following conditions:

m₁ = m₂

Note: m is the slope and it is given by this mathematical expression, slope, m = Δy/Δx.

In this context, we can reasonably infer and logically deduce that the ratios of y/x are the same for the graph of y = -4x and y = -4x + 2 because they both represent parallel lines.

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The given expression is a fraction raised to a power and will be solved by multiplication of exponents for both numerator and denominator.

When in an expression, the base is a fraction raised to a number (exponent), the exponent is applied to both numerator and denominator.

In this case, the base is x^-2/3/y^-1/3 and the exponent is 15.

Since (x^a)^b=x^ab

Multiplication of exponent applied to both numerator and denominator,

(x^⁻²/₃/y^⁻¹/₃)^¹⁵=x^⁻²/₃*15/y^⁻¹/₃*15

Simplifying,

x^⁻²/₃*15/y^⁻¹/₃*15=x^-10/y^-5

Since both numerator and denominator have negative exponents, it is not yet in the simplest form.

According to negative exponents rule, x^-a=1/x^a

To remove the negative exponent, the fraction should be reversed.

x^-10/y^-5=y^5/x^10

The simplest form of the expression (x^⁻²/₃/y^⁻¹/₃)^¹⁵ is y^5/x^10

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Model for the Combined variation  is  [tex]F = \frac{km}{d^{2} }[/tex]

Equation to find the mass of the rocket in terms of F and d is :

[tex]m=\frac{F d^{2} }{k}[/tex]

A force is the quantity that change the motion of the object. Force is that influence which can cause any object having some mass, to change it's position or to accelerate from it's original position.

Force (F) and mass (m) of any object are  directly proportional to each other. More the mass of the object , more the force will require to accelerate it.

Mathematically, we can write the equation of force as :

F = m . a

where , m = mass of the object

             a = constant value

In the statement given,

As, force of gravity varies directly with its mass

Therefore, F= k m , where k is a constant

Also force is inversely varies with square of distance d

Thus, F = k / d²

Combining both equations :

[tex]F = \frac{km}{d^{2} }[/tex]  

and the equation of mass in terms of F and d can be written as :

[tex]m=\frac{F d^{2} }{k}[/tex]

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The gradient of the line joining R(-50, 460) and S(115, 55) is -2.45

The points on the line are given as

R = (-50, 460)

S = (115, 55)

The gradient of the line joining R(-50, 460) and S(115, 55) is calculated using

Gradient = (y2 - y1)/(x2 - x1)

This gives

Gradient = (460 - 55)/(-50 - 115)

Evaluate

Gradient = -2.45

Hence, the gradient of the line joining R(-50, 460) and S(115, 55) is -2.45

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The graph of the inequality expressions is added as an attachment

Inequality expressions are mathematical statements that are represented by variables, coefficients and operators where the opposite sides are not equal

The inequality expressions are given as

y ≥ 2

x + y ≤ 4

y ≤ 2x + 2

Next, we interpret each inequality expression

First expression: y ≥ 2

The inequality symbol in the above inequality expression is ≥

This implies that the inequality expression is a greater than or equal to

When an inequality expression has a sign of equal to, then the line of the inequality graph will be a solid line

Also, the inequality symbol implies that the upper part is shaded

Second expression: x + y ≤ 4

The inequality symbol in the above inequality expression is ≤

This implies that the inequality expression is a less than or equal to

When an inequality expression has a sign of equal to, then the line of the inequality graph will be a solid line

Also, the inequality symbol implies that the bottom part is shaded

Third expression: y ≤ 2x + 2

The inequality symbol in the above inequality expression is ≤

This implies that the inequality expression is a less than or equal to and the inequality symbol implies that the bottom part is shaded

See attachment for the graph of the inequality expressions

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Tim needs 40ft fencing.

For fencing the square garden we need to ascertain perimeter of the square.

Perimeter of plot = 2*(a+b)

Where a = length of the plot

b=width of plot

length =12ft

width=8ft

Perimeter of plot = 2*(a+b) = 2*(12+8)ft=40ft

He needs 40ft fencing.

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Answer:

Solution on screen

Step-by-step explanation:

Don't worry it's okay

Answer:

(-1,4)

(0,0)

(1,-4)

(1,-8)

Step-by-step explanation:

Substitute the value of x in the equation and find the corresponding y value.

 y = -4x

When x = -1     ; y = -4*(-1) = 4.

When x = 0    ; y = 0

When x = 1     ; y = -4*1 = -4

When x = 2    ; y = -4*2 = -8

Answer:

0

Step-by-step explanation:

Because there is no question only

Answer:

[tex]6\frac{3}{5}[/tex]

Step-by-step explanation:

[tex]8 \div 5 = 1\frac{3}{5} \\\\1\frac{3}{5} + 7 = 8\frac{3}{5}\\\\8\frac{3}{5} - 2 = 6\frac{3}{5}[/tex]

The simplification of the expression  (-27)²/₃   is 9.

We are given, (-27)²/₃ and we are required to simplify

What (-27)²/₃ means is that (-27) is to the power of 2 and 1/3

Let's start by finding out  [tex](-27)^{2}[/tex] .The result is, 729

Then, [tex]729^{1/3}[/tex]

= 9

The final result is 9

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10 (ln (e)) = 10, by the definition of logarithm.

Now,

By property of logarithm, ln (e) = 1

Thus, in the expression 10 (ln (e)) = 10 (1) = 10.

Hence, 10 (ln (e)) = 10, by the definition of logarithm.

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Answer:

-4

Step-by-step explanation:

If you graph the two coordinates the line is going down, so the answer is going to be negative. The slope is -4/1 but simplified is -4. Hope this helps. Have a great night.

Answer:

Point Y

Step-by-step explanation:

This dilation is an expansion, so in order for it to expand, the center of dilation need to be in the middle or near the middle of the pre-image.

What is a pre-image?

Noun. preimage (plural preimages) (mathematics) For a given function, the set of all elements of the domain that are mapped into a given subset of the codomain; (formally) given a function ƒ : X → Y and a subset B ⊆ Y, the set ƒ−1(B) = {x ∈ X : ƒ(x) ∈ B}.

What is an Image?

The new position of a point, a line, a line segment, or a figure after a transformation is called its image.

Center of Dilation:

The center of a dilation is a fixed point in the plane about which all points are expanded or contracted. The center is the only invariant (not changing) point under a dilation (k ≠1), and may be located inside, outside, or on a figure.

I hope this helps! :)

Answer:

inverse I believe because it is the same statement but opposite

Answer:

1742 is divided by 2.16 than answer is 418.75

Answer: $684

Step-by-step explanation: Add 300 to 75 and you have 375, next subtract the total payment she wants to have per week (which is 1059) so, subtract 1059 to 375 then you have $684. To check your answer, add 684 to 375 and you come up with 1059.

The page they will be on is 225.

The page that both Juan and Houa would be on at the end of the month is a function of the page they are at the beginning of the month and the page they read per day.

Pages they are in t days:

J = 45 + 15t

H = 9 + 18t

When they are on the same page, both equations would be equal

45 + 15t = 9 + 18t

45 - 9 = 18t - 15t

36 = 3t

t = 36 / 3

t = 12

Page they would be in 12 days: 45 + 15(12)

45 + 180 = 225

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Answer:   Slope = 2.250/2.000 = 1.125

 x-intercept = 40/9 = 4.44444

 y-intercept = 40/-8 = 5/-1 = -5.00000

Step-by-step explanation:

Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is -5.000 and for x=2.000, the value of y is -2.750. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of -2.750 - (-5.000) = 2.250 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)

ttttttgyygyyAnswer:

Step-by-step explanation:

gtgtggtgyyyhhyhyy

The time taken to reach $14200 in the bank with 4.25% interest compounded is 50 years

The time taken to reach 14200 with interest compounded semi-annually can be calculated by

[tex]A = P (1 +\frac{R}{100n})^{nT}[/tex]

where A is the total amount at the end of the period

          P is the principal amount

          R is the rate of interest

          n is the no. of interest compounded per year

          T is the time period

We know that A = 14200

                       P = 9000

                       R = 4.25%

                       n = 2

By substituting these values, we get

                    14200 = 9000 [1 + (4.25 /200[tex]]^{2T}[/tex]

                    14200/9000 =  [tex](1+0.02125)^{2T}[/tex]

                              1.5778 =  [tex](1+0.02125)^{2T}[/tex]

                          1.5778 =  [tex](1+0.02125)^{2T}[/tex]

                           1.5778  =[tex](1 +0.02125)^{2T}[/tex]

Taking logs on both sides,

                    log (1.5778) = log [tex](1+0.02125)^{2T}[/tex]

                    log (1.5778) = 2T log(1 +0.02125)

                              0.198 = 2T log(1.02125)

                             0.198 = 2T (0.00913)

                             0.918 = 0.01826 T

                                    T = 0.918 / 0.01826

                                    T = 50.27 yrs

                                    T ≅ 50 years

Therefore, the time taken to reach $14200 in the bank with 4.25% interest compounded is 50 years

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The equation representing the future value of the collection is given by V=390(1.03)³ as the value appreciates by 3%.

When a value appreciates at a certain percentage means the value of the collection increases by that percentage each year.

The equation that represents such an appreciation is in the form of an exponential equation.

The general equation for calculating future value with appreciation is:

[tex]V = P (1 + r)^n[/tex]  where

V = Future value

P = Present value

r = appreciation rate

n = number of years

Given P = $390 , r= 3%=0.03 , n = 3

Now we substitute the given values in the equation to get:

V=390(1+0.03)³

or, V= 390(1.03)³

or, V= 426.16 dollars approximately .

Hence the required equation is V= 390(1.03)³ .

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Considering the definition of an inequality, the inequality 5 + 2.75×S ≤21 describes the scenario.

An inequality is the existing inequality between two algebraic expressions, connected through the signs:

An inequality contains one or more unknown values ​​called unknowns, in addition to certain known data.

Solving an inequality consists of finding all the values ​​of the unknown for which the inequality relation holds.

In this case, you know that:

Being "S" the number of stops that Julia buys, the inequality that expresses the previous relationship is

5 + 2.75×S ≤21

Finally, the inequality 5 + 2.75×S ≤21 describes the scenario.

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Answer:

D.

Step-by-step explanation:

x=2 1/3

That is the answer