help me: solve the simultaneous equation y-2x= -8 and x²- 3x - y = 2​

The answer is:

The fourth graph.

We are given the following equation:

[tex]f(x)=x[/tex]

Then, we need to find the graph of f(x+2) that will be equal to:

[tex]f(x+2)=x+2[/tex]

[tex]y=x+2[/tex]

Now, finding the x-axis interception, making "y" equal to 0, we have:

[tex]0=x+2[/tex]

[tex]-2=x[/tex]

Therefore, the x-axis interception point is located at (-2,0), it matches with the fourth graph.

Now, finding the y-axis interception, making "x" equal to 0, we have:

[tex]y=x+2[/tex]

[tex]y=0+2=2[/tex]

Therefore, the y-axis interception point is located at (0,2), it matches with the fourth graph.

Hence, we have that the graph of f(x+2) is the fourth graph since the second graph function cuts the x-axis at -2 and the y-axis at 2.

Have a nice day!

Answer:

6n

Step-by-step explanation:

Lesson:  ⇒ Algebric Expression

Product: ⇒ multiply

6n is the correct answer.

I hope this helps you, and have a wonderful day!

The answer is:

The correct option is the first option, the average speed in blocks per minute is 1.5 blocks per minute.

[tex]AverageSpeed=1.5\frac{Block}{minute}[/tex]

To calculate the average speed we need to calculate the total distance traveled and the total time taken to cover that distance.

From the statement we know that:

[tex]Distance_{1}=3blocks\\Distance_{2}=9blocks-3blocks=6blocks\\time_{1}=2minutes\\time_{2}=6minutes[/tex]

So, we need to use the following formula in order to calculate the average speed:

[tex]AverageSpeed=\frac{distance_{1}+distance_{2}}{t_{1}+t_{2}}[/tex]

Then, substituting we have:

[tex]AverageSpeed=\frac{3blocks+9blocks}{2minutes+6minutes}[/tex]

[tex]AverageSpeed=\frac{12blocks}{8minutes}=1.5\frac{blocks}{minutes}[/tex]

Hence, we have that the correct option is the first option, the average speed in blocks per minute is 1.5 blocks per minute.

[tex]AverageSpeed=1.5\frac{Block}{minute}[/tex]

Have a nice day!

Monarch butterflies flap their wings 12 times per second. Over the course of one hour, which is 3600 seconds, they flap their wings approximately 43,200 times.

Monarch butterflies flap their wings about 12 times per second. To figure out how many times they flap their wings in 1 hour, we need to calculate the total number of seconds in an hour and then multiply that by the flapping rate.

Step 1: Calculate the number of seconds in one hour.

Step 2: Multiply the number of seconds by the flapping rate.

So, Monarch butterflies flap their wings approximately 43,200 times in one hour.

Answer:

No Solution

Step-by-step explanation:

Substitution means to replace the variable with the one provided, in this problem we have been given y = 2x, so we would simply replace the y variable in the second equation with 2x.

Review over what we have been given

y = 2x

-6x + 3y = 16

As explained above, substitute the y value in the second equation with the contents of the first equation.

-6x + 3(2x) = 16

In this step, you can solve for the value of x.

-6x + 6x = 16

Since both of the x variables cancel out, we cannot find the value of x since it equals to zero, which also means we cannot find the value of y.

0 = 16

Generally, we find the value of our x, then we would input that into the first equation to find the value of y.

But as stated above, there is no value of x, therefore there is no solution.

Answer:

Number of different operations

Step-by-step explanation:

Answer:

y = -4x + 15

Step-by-step explanation:

Slope-intercept form is y = mx + b

m = slope ([tex]\frac{y_{2} - y_{1}}{x_{2} - x_{1}}[/tex])

b = y-intercept (where the line crosses the y-axis)

It doesn't matter which coordinate pair you use for (x₁,y₁).

(x₁,y₁) = (2,7)

(x₂,y₂) = (4,-1)

[tex]\frac{-1 - 7}{4 - 2}[/tex]   Simplify

[tex]\frac{-8}{2}[/tex]   Simplify

-4 = your slope (m)

To get this information into slope-intercept form, you have to plug it into point-slope form, y - y₁ = m(x - x₁). It doesn't matter which coordinate pair you use for (x₁,y₁).

y - y₁ = m(x - x₁)   Let's use (2,7) since it doesn't have negatives.

y - 7 = -4 (x - 2)   Distribute

y - 7 = -4x + 8   Add 7 to both sides

y = -4x + 15

Check your answer by plugging both coordinate pairs in.

y = -4x + 15

7 = -4(2) + 15

7 = -8 + 15

7 = 7

and

-1 = -4(4) + 15

-1 = -16 + 15

-1 = -1

Answer:

y = -4x + 15

Step-by-step explanation:

m = -y₁ + y₂\-x₁ + x₂

Find the Rate of change [Slope] using the above formula:

-7 - 1\-2 + 4 = -4

Next, we use the Point-Slope Formula [y - y₁ = m(x - x₁)] to convert to Slope-Intercept Formula [y = mx + b]:

y + 1 = -4[x - 4]

y + 1 = -4x + 16

- 1 - 1

________________

[tex]y = - 4x + 15[/tex]

I am joyous to assist you anytime.

Answer:

35° and 105°

Step-by-step explanation:

Sum of all the angles of triangle is 180°

One angle = 40°

35° + 105° + 40° = 180°

Answer:

35° and 105°

Step-by-step explanation:

I had this question trust me its correct.

Answer:

0

Step-by-step explanation:

1/cosecx = sin(x)

cosec(x) = 1/sin(x)

1/sec(x) = cos(x)

sec(x) = 1/cos(x)

1/sin(35) - 1/cos(55)

1.74344 - 1.7344  isn't that something?

0

Answer:

Option A.

Step-by-step explanation:

If you look closely at the graph, we can notice that the function is not defined at two different points.

If you look at functions B and C, you will notice that both functions are not defined at just one point. The function B is not defined at x= -5/2 and function C is not defined at x=-5. Both options are discarded, given that our function should not be defined at two fiferent points.

Now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.

By analyzing the vertical asymptotes, we will see that the correct option is A.

We know that the vertical asymptotes in the graph of a rational function are at the values of x that make the denominator equal to zero.

Here, we can see that we have the asymptotes at x = -2 and at x = 5, so we can assume that the denominator is of the form:

d(x) = (x + 2)*(x - 5)

Now if you look at the options, there is only one that has this denominator, which is A:

[tex]f(x) = \frac{1}{(x + 2)*(x - 5)}[/tex]

If you want to learn more about rational functions, you can read:

https://brainly.com/question/1851758

Answer:

5

Step-by-step explanation:

There are 50 states in the U.S. so to find the states that don't have a store operator by company A you must subtract the states that do by the total number of states:

50 - 38 = 12

12 stores do not have a store operator by company A

To find the fraction you must do [tex]\frac{part}{whole}[/tex]

Part is the number of states that don't have a store operator by company A

Whole is the total number of states in the U.S.

You get the fraction:

[tex]\frac{12}{50}[/tex]

^^^This fraction can be simplified to...

[tex]\frac{6}{25}[/tex]

Hope this helped!

~Just a girl in love with Shawn Mendes

Answer:

12 states do not have a store operator by company A

6/25 is the fraction of states do not have a store operator by company A​

Step-by-step explanation:

50 - 38 = 12

12/50 = 6/25

Answer:

it is the second one because 1/2 divided by 3 equals 1/6 3 times

whenever we have an amount to be divided in ratios, we simply divide the total amount by the sum of those ratios and then distribute accordingly.  In this case, let's divide 77.40 by (1+3+5) and then distribute accordingly to each chap.

[tex]\bf \stackrel{Paul}{1}~~:~~\stackrel{Colin}{3}~~:~~\stackrel{Brian}{5}~\hfill \cfrac{77.40}{1+3+5}\implies 8.6 \\\\\\ \stackrel{Paul}{1\cdot 8.6}~~:~~\stackrel{Colin}{3\cdot 8.6}~~:~~\stackrel{Brian}{5\cdot 8.6}\qquad \implies \qquad \stackrel{Paul}{8.6}~~:~~\stackrel{Colin}{25.8}~~:~~\stackrel{Brian}{43} \\\\[-0.35em] ~\dotfill\\\\ ~\hfill \stackrel{\textit{Brian get this much more than Paul}}{43-8.6\implies 34.4}~\hfill[/tex]

Answer:

£34.40

Step-by-step explanation:

Paul, Colin and Brian are waiters.

One night the restaurant earns tips totalling £77.40

They share the tips in the ratio 1:3:5

Paul gets [tex]\frac{1}{9}[/tex] × £77.40 = £8.60

Brian gets [tex]\frac{5}{9}[/tex] × £77.40 = £43.00

Brian gets £43.00 - £8.60 = £34.40 more than Paul.

Answer:

8

Step-by-step explanation:

–16 • 1/8 • 4 + 32 ÷ 2

Using PEMDAS, we multiply and divide from left to right since there are no parentheses or exponents.

-2 • 4 + 32 ÷ 2

-8 +32 ÷ 2

-8 + 16

Now we add and subtract from left to right

8

Answer:

Approximately 68%

Step-by-step explanation:

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2, that is to say:

X ∼ N(µ, σ2) ⇒ X ∼ N(71, 4).

Now, to find the percentage of bags that contain between 69 and 73 potatos we need the help of a calculator.

Pluging the data into a calculator we get that the percentage of bags that contain between 69 and 73 potatos is 68.27% ≈ 68%.

The solution is: Approximately 68%

Answer:

Approximately 68% percent of bags contain between 69 and 73 potato chips.

Step-by-step explanation:

Number of chips in a bag is normally distributed.

Mean = 71

Standard deviation = 2

We know that in normal distribution, 34.1% of bags will fall with in one standard deviation on one side. On both sides within the range of 1 standard deviation, 34.1 + 34.1 = 68.2 % of bags will fall.

A table of normal distribution about mean is attached for better understanding.

Our range is:

69 to 73

71 - 2 to 71 + 2

71 ± 2

mean ± standard deviation

Our range is within 1 standard deviation. Hence, Approximately 68% of bags contain between 69 and 73 potato chips.

Answer:

Without any other information the answers could be a and c because they contain the factor x+5

Step-by-step explanation:

f(-5)=0 means that x=-5 is a zero which means x+5 is a factor

Without any other information f can be any of the expressions that have the factor (x+5)

Answer:

A. (x-2)(x+5)(x-3) is the correct answer to this question

Hope it helps!

ANSWER

The correct answer is D

EXPLANATION

The given quadratic expression is

[tex]3 {x}^{2} + 8x = - 1[/tex]

Divide through by 3

[tex]{x}^{2} + \frac{8}{3} x = - \frac{1}{3} [/tex]

We now add the square of half the coefficient of x because the coefficient of the quadratic term is now unity.

The constant we would add is

[tex] {( \frac{4}{3} )}^{2} = \frac{16}{9} [/tex]

The correct answer is D

Answer: Option D.

Step-by-step explanation:

Given the quadratic equation [tex]3x^2+8x=-1[/tex], you can observe that the leading coefficient is not 1, then you have to divide both sides of the equation by 3:

[tex]\frac{3x^2+8x}{3}=\frac{-1}{3}\\\\x^2+\frac{8}{3}x=\frac{-1}{3}[/tex]

Now, you can observe that the coefficient of the x-term is [tex]\frac{3}{8}[/tex], so you must divide it by 2 and square it. Then you get:

[tex](\frac{\frac{8}{3}}{\frac{2}{1}})^2=\frac{16}{9}[/tex]

Therefore, you must add [tex]\frac{16}{9}[/tex] to both sides of the equation.

Answer:

B

Step-by-step explanation:

Given the expression

2n + 3

To determine the terms in the sequence generated by this expression

Substitute n = 1, 2, 3, 4, ... into it

a₁ = (2 × 1) + 3 = 2 + 3 = 5

a₂ = (2 × 2) + 3 = 4 + 3 = 7

a₃ = (2 × 3) + 3 = 6 + 3 = 9

a₄ = (2 × 4) + 3 = 8 + 3 = 11

a₅ = (2 × 5) + 3 = 10 + 3 = 13

The first 5 terms of the sequence are 5, 7, 9, 11, 13

Answer: No, because 1/3 is smaller than 2/3

Hope this helps :)

Step-by-step explanation:

Answer:

C 40

Step-by-step explanation:

The sum of the angles of a triangle add to 180 degrees

y+10 + 2y + 50 = 180

Combine like terms

3y + 60 =180

Subtract 60 from each side

3y+60-60 = 180-60

3y = 120

Divide by 3

3y/3 = 120/3

y = 40

The sum of all the angles of a triangle is 180 degrees. To solve for y you can make a formula of the sum of the angles equal to 180 like so...

y + 10 + 2y + 50 = 180

Now you must combine like terms. This means that first numbers with the same variables (y) must be combined...

(y + 2y) + 10 + 50 = 180

3y + 10 + 50 = 180

Combine like terms 10 and 50...

3y + 60 = 180

Now bring 60 to the left side by subtracting 60 to both sides (what you do on one side you must do to the other). Since 60 is being added on the left side, subtraction (the opposite of addition) will cancel it out (make it zero) from the left side and bring it over to the right side.

3y + 60 - 60 = 180 - 60

3y + 0 = 120

3y = 120

Next divide 3 to both sides to finish isolating x. Since 3 is being multiplied by x, division (the opposite of multiplication) will cancel 3 out (in this case it will make 3 one) from the left side and bring it over to the right side.

3y / 3 = 120 / 3

y = 40

C. 40

Hope this helped!

~Just a girl in love with Shawn Mendes

Answer:

It is known that 1 pint equals 16 ounces

Step-by-step explanation:

It is known that 1 pint equals 16 ounces. Then we use this data to transform a number of ounces into pints.

Suppose we have x ounces. We want to know how many pints are these x ounces. Then we perform the following operation

[tex]x\ ounces*\frac{1\ pint}{16\ ounces}=z\ pints[/tex]

Where z pints is the amount equivalent to x ounces

C is the correct answer.

Answer:

y = 5

Step-by-step explanation:

Given y varies directly with x then the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition y = 2.5 when x = 5

k = [tex]\frac{y}{x}[/tex] = [tex]\frac{2.5}{5}[/tex] = 0.5

y = 0.5x ← equation of variation

When x = 10, then

y = 0.5 × 10 = 5

Answer:

Step-by-step explanation:

Use Basic Proportionality Theorem (look at the picture).

Therefore we have the equation:

[tex]\dfrac{3x-2}{50}=\dfrac{6}{30}\qquad\text{cross multiply}\\\\30(3x-2)=50(6)\qquad\text{use the distributive property}\\\\(30)(3x)+(30)(-2)=300\\\\90x-60=300\qquad\text{add 60 to both sides}\\\\90x=360\qquad\text{divide both sides by 90}\\\\x=4[/tex]

Answer:

Step-by-step explanation:

16+(-4)-7=16 -(4+7)=16-28 = -12

Answer:

The amount of money that Alex has is $47.4

Step-by-step explanation:

Let

x----> amount of money that Alex has

y----> amount of money that Jennifer has

z----> amount of money that Jennifer Shannon has

we know that

x+y+z=91 ----> equation A

x=3y -----> equation B

y=z-12 -----> z=y+12 -----> equation C

substitute equation B and equation C in equation A and solve for y

(3y)+y+(y+12)=91

5y=91-12

y=79/5

y=$15.8

Find the value of x

x=3y ----> x=3(15.8)=$47.4

Answer:

f(g(x)) = g(f(x)) = x

Step-by-step explanation:

Lemma;

If f(x) and g(x) are inverses, then the compositions  f(g(x)) = g(f(x)) = x

ANSWER

[tex]g(f( - 1)) = \frac{1}{5 }[/tex]

EXPLANATION

The given function is:

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

and

[tex]g(x) = \frac{1}{2x + 3} [/tex]

[tex]g(f(x)) = g( {x}^{2} )[/tex]

[tex]g(f(x)) = \frac{1}{2{x}^{2} + 3 } [/tex]

To find g(f(-1)), we substitute x=-1, to obtain;

[tex]g(f( - 1)) = \frac{1}{2{( - 1)}^{2} + 3 } [/tex]

We simplify the square in the denominator to get,

[tex]g(f( - 1)) = \frac{1}{2+ 3 } [/tex]

We now add the denominator to obtain;

[tex]g(f( - 1)) = \frac{1}{5 } [/tex]