“Solve the following systems of equations using any method” ( elimination, substitution, graphing)

The percent change from the old model to the new model estimation of a 5-year old dog's age is 41.66%  .

The traditional model involved multiplying the dog's age with seven to calculate their age in human years. for example if the age of dog is 3 years , so in human years he/she will be 3x7 = 21 years old in human years.

Here we calculate the age of 5-years old dog in human years. So we multiply the 5 with 7 and get the answer as 35 years .

As per the new convention 5-years old dos's age is nearly equal to 60 in human years.

So the difference in age in both the methods is

age difference = 60 - 35

                          =  25

So the percent change in age = (25/60) x 100

                                                  = 41.66 %

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Answer:

With what?

Step-by-step explanation:

Answer:

Step-by-step explanation:

d

Answer:

x= 134 ± 2

Step-by-step explanation:

The ± symbol is used to mark the range of values that should be expected from the first number, 134.

The fraction -(13/10) × 6 is equal to the mixed fraction -7 whole number 4 divided by 5.

From the given fracion;

-(13/10) × 6 = -[13/(2×5)] ×2 × 3

we divide the common factor 2 for 10 and 6

-(13/10) × 6 = -(13/5) × 3

multiply the numerators

-(13/10) × 6 = (-13×3)/5

-(13/10) × 6 = -39/5

divide -39 by 5

-(13/10) × 6 = -7 whole number, 4/5 in mixed fraction

Therefore, the mixed fraction for -(13/10) × 6 is -7 4/5.

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7v + 12b = 640

12v + 6b = 456

Multiply the bottom equation by -2 in order to cancel out 12b with 6b.

7v + 12b = 640

- 24v -12b = -912

-17v = -272

17v = 272

v = 272/17

v = 16 students

If we use this: 7v + 12b = 640 ;then:

7(16) +12b = 640

112 +12b = 640

12b = 640 -112

12b = 528

b = 528/12

b = 44 students

So the number of students in each van is 16, and number of students in each bus is 44.

The zeroes of the polynomial is -7,-9 and the lesser x = -9, greater x = -7.

What is zeroes of polynomial?

We already know that a polynomial is an algebraic term with one or many terms. Zeroes of Polynomial are the real values of the variable for which the value of the polynomial becomes zero. So, real numbers, ‘m’ and ‘n’ are zeroes of polynomial p (x), if p (m) = 0 and p (n) = 0.

Given

f(x) = (x+8)² - 1

=x^2+64+16x-1

=x^2+16x+63

=x^2+7x+9x+63

=x(x+7)+9(x+7)

=(x+7)(x+9)

therefore, x=-7,-9

The lesser x = -9,

the greater x = -7.

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Answer:

0.3144654088

Step-by-step explanation:

6/19.08=0.3144654088

The y-intercept in the equation is 10. This is the initial height of the flower.

An exponential equation can be described as an equation with exponents. The exponent is usually a variable. When an exponential function is drawn on a coordinate graph, it is usually nonlinear because the slope is not constant.

The general form of exponential equation is f(x) = [tex]e^{x}[/tex]

Where:

The y-intercept of an exponential function is the value of y when x is zero. It is the point where the graph intersects the y-axis. The y-intercept represents the initial height of the flower.

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Probability that the coin lands heads exactly 11 times is 0.1602 so Option a is correct.

Given:

an unbiased coin is tossed 20 times.

The probability that the coin lands heads exactly 11 times:

P = n(E)/n(S)

n(S) = 2^tosses

= 2^20

= 1048576

n(E) = C(20,11)

= 20!/11!(20-11)!

= 20!/11!*9!

= 167960

Probability P = 167960/1048576

= 0.16017 ≈ 0.1602

Therefore Probability that the coin lands heads exactly 11 times is 0.1602 so Option a is correct.

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To determine what satisfying assumptions 1-3 would mean by considering the variable under consideration.

The regression-inference Assumptions 1-3 must be satisfied if β°, β¹ and σ are constants, which ensures the x dimensions and price of every custom home to be normal, with β° + β¹ and a σ standard deviation.

The residuals should not be linear if the normal probability plot is followed.

In the diagram above, the assumptions for regression inferences appear to be unsatisfactory.

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Answer:

Step-by-step explanation:

To plot

(

−

4

,

−

3

)

, start at the origin

(

0

,

0

)

and move left

4

units and down

3

units.

(

−

4

,

−

3

)

Answer: X'=

(7,-4)

Step-by-step explanation: We have the rule (x+3,y-5) so using the given coordinates (4, 1), we can find the answer by doing this => (4+3,1-5)=(7,-4)

(4n+1)^2 = 16n^2 + 8n + 1

(16n^2 + 8n + 1) - (2n - 1) = 16n^2 + 6n + 2

this means that it must always be an even number because the positive integer n is multiplied by an even number. and then it is added by 2, which will keep it even. should be right

Yes, it indicates that the number of single people under the age of 25 is higher than the national percentage reported by the large insurance company, according to the calculated z-score.

here the sample size is = 25(n), therefore sample proportion will be, p⁰= 41/25 =0.774 .since the  null  hypothesis is  :H₀:p =0.68 and the alternative hypothesis  is  :H₁:p>0.68 .The  z-test  is :

Z=p⁰−p/ √(p(1-p)/n

  = 0.774-0.68/root(0.68(1-0.68)/52

    =1.453

The p-value for  the z score = 1.453 is 0.0731.Here the P-value is greater than the 5% level of significance. We come up short to dismiss the null hypothesis at the 5% level of significance. it can be concluded that the number of single individuals under the age of 25 is higher than the national percentage detailed by the large insurance company.

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Answer: Sixth throw is 6

Step-by-step explanation: Let sixth throw be 'x'

1+5+3+5+1+x/6=3.5

15+x=3.5*6

15+x=21

x=6

Answer:3

Step-by-step explanation: literally just subtract 2 each time its not hard

Answer:

100%

Step-by-step explanation:

If all 27 votes for hunger relief, that would be 100% or all of them.

The solution to the system of equations, using elimination, is given as follows:

x = 0.0135, y = -0.2767, z = -0.1024.

The solution to the system of equations is obtained using the elimination method, as the variables are written as functions of each other and then solved.

The system in this problem is composed by the equations presented as follows:

From the first equation, the variable z is written as function of variables x and y, as follows:

z = 5x - 3y - 1.

Replacing in the second equation, we have that:

x + 4y - 6(5x - 3y - 1) = -1

-29x + 22y = -7.

Replacing in the third equation, we have that:

2x + 3y + 4(5x - 3y - 1) = -1

22x - 9y = 3.

Hence the system is now:

Multiplying the first equation by 9 and the second by 22, we have that:

Adding the equations, the solution for x is obtained as follows:

223x = 3

x = 3/223

x = 0.0135.

Then the solution for y is obtained as follows:

-261(0.0315) + 198y = -63

y = (-63 + 261(0.0315))/198

y = -0.2767.

The solution for z is:

z = 5(0.0135) - 3(-0.2767) - 1 = -0.1024,

The problem asks to solve the system of equations using the elimination method.

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The inverse of the given function is (f^-1)(x) = (1/2)×(√x  - 1) for x ≥ 0.

We are given a function f(x). The function f(x) is defined as (2x + 1)². The domain of the given function f(x) is x ≥ -1/2. We need to find the inverse of the function f(x).

Let us suppose that the function f(x) is represented by the variable "y".

y = f(x)

y = (2x + 1)²

Now we will take the square root on both sides of the equation.

√y = √[(2x + 1)²]

When we cancel out the even powers, we need to take the absolute value using modulus.

√y = |2x + 1|

We already know that x ≥ -1/2, so, modulus will open with a positive sign.

√y = +(2x + 1)

√y = 2x + 1

√y  - 1 = 2x

x = (1/2)×(√y  - 1)

At last, we replace the variables y and x by x and (f^-1)(x).

(f^-1)(x) = (1/2)×(√x  - 1) for x ≥ 0

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Answer:

Step-by-step explanation:

1. Find definition of range: the difference between the highest and lowest values.

Highest value:100

Lowest Value 75

2. Caculate:

100-75=

25 is the range

Answer: 25 is range

Answer:

range is 25.

ffd

Step-by-step explanation:

.... yyyy

The polynomial, f(x) expressed as a product of linear factors is; f(x) =(-5/2 + √ 5) and (-5/2 - √ 5)

They are mathematical expressions involving variables raised with non negative integers and coefficients(constants who are in multiplication with those variables) and constants with only operations of addition, subtraction, multiplication and non negative exponentiation of variables involved.

Given that ;

[tex]p(A) = 2x^3 - 3x^2 + 10x + 6[/tex]

[tex]P(a)= (2x^3 - 3x^2) + (10x + 6)[/tex]

therefore need to further factorise the quadratic expression (x² + 5x +3) using the quadratic formula;

Quadratic formula;

x = {-b ± √(b² +4ac)}/2a

where; a = 1, b = 5, c = 3.

Therefore; x = -5/2 + √ 5or x = -5/2 - √ 5

Therefore, the other factors are:

(-5/2 + √ 5) and (-5/2 - √ 5)

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20 to 25 minutes Transcription occurs at a rate of 40 nucleotides per second.

Given,

In the question:

If transcription progresses at the rate of 40 nucleotides per second.

To find the how long it would take to transcribe a sequence that is 3. 6 x 104 bases long?

Why is a nucleotide necessary?

Nucleotides have a variety of roles in animal physiology, including those of energy storage, transporters of activated metabolites for biosynthesis, structural moieties of coenzymes, and metabolic regulators.

Give an example of nucleotides and describe them.

A nucleotide is the fundamental part of nucleic acids (RNA and DNA). A nucleotide is made up of a nitrogen-containing base, a phosphate group, and a sugar molecule (either ribose in RNA or deoxyribose in DNA). The nucleotides used in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T).

Hence, 20 to 25 minutes Transcription occurs at a rate of 40 nucleotides per second.

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Answer:

2/3

Step-by-step explanation:

Since 6 *6 = 36 , the square root of 36 is 6

In other words:

[tex]\sqrt{36} \\= 6\\[/tex]

Since 9*9 = 81, the square root of 81 is 9

[tex]\\\/\sqrt{81}\\ = 9[/tex]

Now we have the fraction [tex]\frac{6}{9}[/tex]

Now we reduce [tex]\frac{6}{9}[/tex] to lowest terms:

[tex]\frac{6}{9 } = \frac{2}{3}[/tex]

Therefore, the answer is  [tex]\frac{2}{3}[/tex]

Hope this helps :)

In the given situation, the work done by gravity is zero as any work done during a downward part of the motion as undone during the upward parts.

Work refers to the measurement of energy transfer that happens when an object is moved over a distance by an external force which is applied in the direction of the displacement. Hence, the work done is given by the multiplication of force and displacement in the direction of force i.e., W = F x d. As in the given case, the displacement d = 0 as the particle returns to the same point. The work done by gravity would measure the displacement along the y-axis and as the total displacement is zero, hence, work done will be zero.

Note: The question is missing the figure which is attached.

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Answer:

3 cars

Step-by-step explanation:

We know this because 15 3/4 is the same as 63in and 3 5/8 is the same as 21. So we divide 63÷21=3

70-year-olds pay an extra $15708 for a 20-year term.

Given;

The average cost to a 50-year-old male for a $100,000 term life policy is $14. 34 per month. The same policy would cost a 70-year-old male $79. 79 per month.

A 70-year-average old's monthly expense (MAC) is $79.79

A 50-year-average old's monthly expense (MAC) is $14.34

MAC → Monthly Average Cost

To get how much more will the 70-year-old pay for a 20-year term;

We will multiply the monthly value by the yearly and solve the given data,

The extra amount paid = (MAC of 70 years old * 12 - MAC of 50 years old * 12) * 20 years term.

                                      = ($79.79 * 12 - $14.34 * 12) * 20

                                      = ($957.48 - $172.08) * 20

                                      = $15708

Hence, the excess amount 70-year-old pay for a 20-year term is $15708.

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The domain includes all real numbers, and the range is y > 0

What are domain and range?

A function's domain and range are its constituent parts. A function's range is its potential output, whereas its domain is the set of all possible input values. Range, Domain, and Function. A is the domain and B is the co-domain if a function f: A B exists that maps every element of A to an element in B. 'b', where (a,b) R, provides the representation of an element 'a' under a relation R. The set of images is the function's range. In general, a function's domain and range are denoted as follows: Range(f) = f(x): x domain(f) and domain(f) = f(x): x R

Domain: The domain is the set of all possible x-values.

Range: The range of a function is the complete set of all possible resulting values of the dependent variable y.

We can see from the graph, x values include all real numbers and range ( y values greater than 0 because the graph line does not intersect at 0.

we know that

The domain of the function of the graph is the interval (-∞,∞)

That means the domain is all real numbers.

The range of the function of the graph is the interval is (0,∞)

That means the domain is all real numbers greater than zero.

So, Option d is correct.

Therefore,

The domain includes all real numbers, and the range is y > 0.

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Answer:

36 = 2x + y

x = y

x = 12

y = 12

Step-by-step explanation:

Answer:A=12 C=24

Step-by-step explanation:

there are 3 shares[2x and theunknown]

36=3shares so 1 share=36divided by3=12

ad=12

ch=12x2=24

12+24=36

Answer:

u should ask a teacher

Step-by-step explanation:

they wouldn't get mad but happy asked

The equation to show the net effect of these transactions is x - 45 + 150.

The equation is x + 105.

An equation is the statement that illustrates that the variables given. In this case, two or more components are taken into consideration to describe the scenario.

In this case, the customer withdrew $45 from a bank account and the customer then deposited $150 into the bank account the next day.

Let the initial amount in the account be x. The amount after the transaction will be:

= x - 45 + 150

= x + 105

The equation is x + 105.

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Answer:

221

Step-by-step explanation:Order of operations