find the values of k for which the line y = 2x + k + 2 cuts the curve y = 2x^2 + (k + 2)x + 8 at two distinct points.

Answers

Answer 1

The values of k for which the line y = 2x + k + 2 cuts the curve y = 2x² + (k + 2) + 8 at two distinct points are; k > -12 or k < 4

What is the point of Intersection of the line and the curve?

We are given the equation of the line as;

y = 2x + k + 2

Equation of the curve is;

y = 2x² + (k + 2) + 8

Now, to find the the values of k for which the line y = 2x + k + 2 cuts the curve y = 2x² + (k + 2) + 8 at two distinct points, we will just equate both equations to get;

2x + k + 2 =  2x² + (k + 2) + 8

2x + k + 2 =  2x² + kx + 2x + 8

2x² + kx + (-k + 6) = 0

Now, Two distinct solutions is the same as having a positive discriminant.

b² - 4ac > 0

k² - 4(2 * (-k + 6)) > 0

k²  + 8k - 48 > 0

Solving using quadratic equation calculator gives;

k > -12 or k < 4

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Related Questions

I Need help QUICK!

Which graph represents the solution set for p + 3.6 > −5.8? number line with open circle on point negative 9.4 and arrow shaded to the left number line with open circle on point negative 9.4 and arrow shaded to the right number line with open circle on point negative 2.2 and arrow shaded to the left number line with open circle on point negative 2.2 and arrow shaded to the right

Answers

Answer: c

Step-by-step explanation:

The solution set for the inequality is p > -9.4. See attachment below for the graph.

How to Graph the Solution Set for an Inequality?

An open circle is used when the inequality sign involved is ">" or "<". That is, it is used for numbers that are less than or greater than.

An arrow shaded to the right means the solution set is greater than a given value, while an arrow shaded to the left means the solution set includes all values that are less than a given value.

Given the inequality, p + 3.6 > −5.8, solve for p:

p + 3.6 > −5.8

Subtract 3.6 from both sides

p + 3.6 - 3.6 > -5.8 - 3.6

p > -9.4

Thus, the solution set would be all the values that are greater than -9.4. The graph is shown below.

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Select the correct answer.
Which inequality is represented by the number line?

Answers

Answer:

I think C. Correct me if I am wrong.

Step-by-step explanation:

Hope it helps! =D

Answer: The answer is C.

Step-by-step explanation: Because I use a graphing calculator

I keep getting 0.33... but it says it wrong i need it as a fraction

Answers

Answer:

1/3

Step-by-step explanation:

0.3333...=1/3

Each morning Martina attempts a
crossword and a Sudoku.
The probability that Martina successfully
completes the crossword is 0.3.
The probability that Martina successfully
completes the Sudoku is 0.6
a) Show this information on a tree
diagram in your books
b) What is the probability she
successfully completes both puzzles?
c) What is the probability that she
successfully completes at least one
puzzle?

Answers

Using the probability concept, it is found that:

a) The tree diagram is given by the image at the end of the answer.

b) The probability is of 0.18 = 18%.

c) The probability is of 0.72 = 72%.

What is a probability?

A probability is calculated as the number of desired outcomes in the experiment divided by the number of total outcomes in the experiment.

For item a in this problem, we have two independent events, hence the tree diagram will contain two nodes, one with each event and it's probabilities.

For item b, since the events are independent, to find the probability of both, we multiply the probability of each, hence:

0.3 x 0.6 = 0.18.

For item c, first we find the probability of none being completed, hence:

(1 - 0.3) x (1 - 0.6) = 0.7 x 0.4 = 0.28.

At least one is complementary to none, hence the probability is given as follows:

p = 1 - 0.28 = 0.72 = 72%.

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Lea
owhs 800 shares of ABC, Incorporated. On April 6, the corporation Instituted a 5-for-2 stock split. Before the split, each share was worth $42.60.
a. How many shares did Lea hold after the split?
b. What was the post-split price per share?
c. Show that the split was a monetary non-event for Lea. Pre-split and post-split market values=

Answers

Answer:

2000

Step-by-step explanation:

Number of shares after split is 5/2 times the pre split value =800*5/2 = 2000

A polygon is shown on the graph: A polygon is shown on a coordinate plane. The vertices are A at negative 6 comma 5, B at negative 6 comma 2, C at negative 2 comma 2, and D at negative 2 comma 6. If the polygon is translated 4 units down and 5 units right, what will the coordinates of the new image be? Use prime notation in expressing the new coordinates. (5 points)HELP ASAP

Answers

The coordinates of the image of polygon A'B'C'D' would be A' (-1, 1), B' (-1, -2), C' (3, -2), D' (3, 2).

What is a translation?

A translation can be defined as a type of transformation which moves every point of the object in the same direction, as well as for the same distance.

Since the pre-image of polygon ABCD is translated (shifted) vertically downward by 4 units and right 5 units, the coordinates of the image of polygon A'B'C'D' would be given by:

(x, y)                    →            (x + 5, y - 4)

Coordinate A = (-6, 5)   →    Coordinate A' (-6 + 5, 5 - 4) = (-1, 1)

Coordinate B = (-6, 2)   →    Coordinate B' = (-6 + 5, 2 - 4) = (-1, -2)

Coordinate C = (-2, 2)   →     Coordinate C' = (-2 + 5, 2 - 4) = (3, -2)

Coordinate D = (-2, 6)   →     Coordinate D' = (-2 + 5, 6 - 4) = (3, 2)

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Find the value of the variables

Answers

Answer:

x = 3y

y + x = 4y = 180

y = 45

x = 135

Ben can type 25 words in half a minute. At this rate, how many words can he type in 5 minutes?

Answers

250 word in 5 minutea

Step-by-step explanation:

1. 25×2 (Because 25 is half of a minute so I need to multiplie by two)

2. It gives you 50 u multiplie by 5 because u need to find the answer for 5 minutes

3. 50×5= 250!!

Answer:

250

Step-by-step explanation:

25x2 (wpm) * 5 (minutes) = 250
words per minute means words typed every minute. if ben types 50 words per minute, this means he can type 250 words in 5 minutes.

(sorry for edit, i misread words in half minute as words per minute, credit to lina6561 for making me realize)

a farmer is building a fence to enclose a rectangular area consisting of 2 separate regions. the 4 walls and one additional vertical segment to separate the regions are made up of fencing. if the farmer has 648 feet of fencing what are the dimensions of the region which enclose the maximum area?

Answers

The dimensions of the region which enclose the maximum area is a side of 162 feet and vertical segment of 108 feet

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables.

Let x represent the side parallel to the vertical segment and y represent the other side. If the farmer has 648 feet of fencing, hence:

x + x + y + y + x = 648

3x + 2y = 648

y = 324 - 1.5x

Area (A) = xy

A = xy

A = x(324 - 1.5x)

A = 324x - 1.5x²

The maximum area is at A' = 0, hence:

A' = 324 - 3x

324 - 3x = 0

3x = 324

x = 108 feet

y = 324 - 1.5(108) = 162 feet

x = 108 feet, y = 162 feet

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what is the percent of 10 of 20 please give me a better understanding

Answers

We need to calculate the 10% of 20. By definition, a% is:

[tex]a\text{ \%}=\frac{a}{100}[/tex]

Where a can be any positive number. In this case a = 10, then:

[tex]10\text{ \%}=\frac{10}{100}=\frac{1}{10}[/tex]

In mathematics, the word "of" is reserved for the product. Then 10% of 20 is just:

[tex]10\text{ \% of }20=\frac{1}{10}\cdot20[/tex]

Solving this leads to 2.

Answer:

50 percent.

Step-by-step explanation:

10 of 20 as a fraction is

10/20

- divide top and bottom by 10 and this simplifies to

1/2.

To convert to a percentage we multiply by 100:

= 1/2 * 100

= 50%.

someone help me please!

Answers

The y intercept of the function f(x) = 2^2−4 is 0

The x intercept of the function f(x) = 2^2−4 is 0 or 2

The zeros of the function f(x) = 2^2−4 is 0 or 2

When f(x) = f(-4) then the function f(-4) = 48

When f(x) = 2 then x = -0.4142 or 2.142

How to fine the intercepts and the zeros

given data

f(x) = 2^2 − 4

The y intercept

f(x) = 2^2−4

y = 2^2−4

at x = 0

y = 2 ( 0 ) ^2 - 4 ( 0 )

y = 0 - 0

y = 0

The x intercept

f(x) = 2^2 − 4

y = 2^2− 4

at y = 0

0 = 2^2− 4

0 = 2x( x - 2 )

2x = 0    OR     x - 2 = 0

x = 0      OR     x = 2

The zeros

This same as the x intercept

f(-4)

f(x) = 2^2− 4

f(-4) = 2 (-4)^2 - 4 * -4

f(-4) = 2 * 16 + 16

f(-4) = 48

f(x) = 2 when x =

f(x) = 2^2− 4

2 = 2x( x - 2 )

1 = x^2 - 2x

0 = x^2 - 2x - 1

x = -0.4142 or 2.142

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Cual es elvalor absoluto del opuesto de 2,5 ?

Answers

Answer:|2.5|

Step-by-step explanation:

En este caso el valor absoluto de 0 a |2.5| es 2.5. Esto se debe a que ya sea que cambies la ecuación o no para que sea igual a otro número, la respuesta SIEMPRE será 2.5. ¡Espero que esto haya ayudado! :D

Please help me my mom is very upset and I’m grounded

Answers

It’s actually very simple each problem adds up to 180° because it’s a right angle to take both problems add them together at times 180×2 and then just yeah

a/-8= - a+10/3
solve for A

​​​

Answers

Step-by-step explanation:

you can ask questions for clarification

Chris designs a flag.
20% of the flag is white and the rest is pink.
What is the ratio of white to pink?

Answers

the ratio of white to pink would be 80%

Make x the subject of m= n + x/p​

Answers

Answer:

x=mp-n

so that leaves us with the answer

Step-by-step explanation:

m=n+x/p

first you want to move the P over to the left side by x P

so:

mp=n+x

the P on the right side cancels out

now you want to move the n to the left side by subtracting it form both sides

use the given domain to find the range of function. help please

Answers

The range for the given domain D = {2, -3, 0} of the function f(x) = 2x² + 7 is; R = {7, 15, 25}

What is the Range of the Function?

We are given the function as;

f(x) = 2x² + 7

We are given the domain set as;

D = {2, -3, 0}

Now, the range will simply be gotten by plugging in each domain value into the given function to get the output. Thus;

Range when x = 0 is;

y = 2(0)² + 7

y = 7

Range when x = 2 is;

y = 2(2)² + 7

y = 15

Range when x = -3 is;

y = 2(-3)² + 7

y = 25

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what is the expression for t-3

Answers

The mathematical statement of the expression t - 3 is the difference between t and 3

What are expressions?

Expressions are mathematical statements that are represented by variables, coefficients and operators

How to determine the expression?

The algebraic expression is given as

t - 3

The above mathematical representation is an algebraic expression that is already in its most simplified form

This means that the algebraic expression cannot be further simplified

However, the algebraic expression can be rewritten as a mathematical statement

Recall that, we have

t - 3

The pronunciation of the above expression is:

t minus 3

In expressions, minus represents difference

So, we have

t minus 3 can be represented as the difference between t and 3

Hence, the representation of the algebraic expression given as t - 3 is the difference between t and 3

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given a normal distribution with mean 100 and standard deviation​ 10, find the number of standard deviations the measurement is from the mean. express the answer as a positive number. 87

Answers

The measurement deviates from the mean by more than 100 standard deviations.

What does simple math standard deviation mean?

It's a way to gauge how widely apart each data point is from the mean. The standard deviation formula comes in two different forms: Standard deviation for the population When you can measure the entire population or the entire collection of data, you use the population version of the formula. Experts in statistics have determined that measurements that fall within a 2 SD range of the true value are more accurate than those that do not..

based on the facts provided;

the average population, =100

The standard deviation for the population

σ=10

Z score:

Z=X−μσ

X:The measurement.

The number of standard deviations the measurement is from the mean:

We are not given the measurement. So, assuming the measurement is equal to 139.

When

X=139

Z=139−100/10

=3.9

It implies that the measurement of

139 is 3.9

standard deviation above the mean of 100;

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i need your helppppppp

Answers

The result of the function n(x)= [tex]-1-\frac{1}{3}x+1\frac{2}{3}[/tex] when x = -2,0 and 5

n(-2) = 4/3

n(0) = 2/3

n(5)  = -1

The function is n(x)= [tex]-1-\frac{1}{3}x+1\frac{2}{3}[/tex]

The function is an equation which expression the relationship between one variable and another variable. If one variable is independent variable then another variable will be dependent variable.

The function is n(x)= [tex]-1-\frac{1}{3}x+1\frac{2}{3}[/tex]  when x= -2,0 and 5

Here we have to substitute the value of x in the given function

n(-2) = -1-(1/3)(-2)+5/3

= -1+(2/3)+5/3

= 4/3

n(0) = -1-(1/3)(0)+5/3

= -1+(5/3)

= 2/3

n(5) = -1-(1/3)(5)+5/3

=  -1-(5/3)+(5/3)

= -1

Hence, the result of the function n(x)= [tex]-1-\frac{1}{3}x+1\frac{2}{3}[/tex] when x = -2,0 and 5

n(-2) = 4/3

n(0) = 2/3

n(5)  = -1

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Which term of the arithmetic sequence 7, 3, -1, -5, ... is -385?

Answers

99th term of the given arithmetic sequence 7, 3, -1, -5, ... is -385.

We are provided with the arithmetic sequence mentioned below;

7, 3, -1, -5, ................. -385

[tex]a_{n}[/tex] =  [tex]a_{1}[/tex] + (n−1)d

where [tex]a_{1}[/tex] is the first term, [tex]a_{n}[/tex] is the nth term and d is the difference between a term and its previous term.

With the help of provided arithmetic sequence we can write;

[tex]a_{n}[/tex] = -385

[tex]a_{1}[/tex] = 7

d = difference between a term and its previous term = 3 - 7 = -4

Put these values in equation 1 , we will get

-385 = 7 + (n-1) (-4)

392 = 4n -4

4n = 396

n = 99

So we can conclude that the 99th term of the arithmetic sequence 7, 3, -1, -5, ... is -385.

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​ NP and QS areparallellines. M N O P Q R S T Which angles are supplementary angles? NOM and NOR NOM and QRO NOM and POR NOM and SRT Submit

Answers

The angles that are supplementary angles are: ∠SRT and ∠SRO

What are Supplementary Angles?

Angles that are supplementary will give us a sum of 180 degrees when we add the two angles together. One is the supplement of the other.

Some examples of angles that are supplementary angles that are formed when two parallel lines are intersected by a transversal include:

Same-side interior anglesSame-side exterior anglesLinear pair angles formed on a straight line and are adjacent to each other.

Angle SRT and angle SRO are angles that are adjacent to each other because they share a common side SR and a common vertex R. They line on the straight line OT.

Therefore, angle SRT and angle SRO are two angles that are supplementary angles as shown in the diagram attached below where lines NP and QS are parallel lines. The supplementary angles are therefore angle SRT and angle SRO.

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Please help!! I’ve been stuck on this for days

Answers

Answer

Step 1:         6,3

Step 2:       x1  -1                     y2- 2

Step 3:           1, 7

Step-by-step explanation:

Work out the values of a, b, c and d.
Justify each of your answers.
W
Z
33%

16°
45°

80°
22%
X
Y
Not drawn accurately

Answers

Answer69

Step-by-step explanation:

find the unit rate9 books for $99 how much for 1 book

Answers

Answer:

Step-by-step explanation:

To find the unit rate, we divide the price by the number of items bought.

In this question:

Price: $99

Items: 9 books

Unit rate: $99/9 = $11

The unit rate is of $11 per book.

whats the first answer

Answers

The answer to part a is x=5.

a.

[tex] {3}^{2} \times {3}^{x} = {3}^{7 \\ } \\ \\ {3}^{2 + x} = {3}^{7} \\ 2 + x = 7 \\ x = 7 - 2 \\ x = 5[/tex]

b.

[tex] {7}^{8} \div {7}^{y} = {7}^{6} \\ {7}^{8 - y} = {7}^{6} \\ 8 - y = 6 \\ y = 8 - 6 \\ y = 2[/tex]

c.

[tex]( {q}^{4} )^{z} = q ^{12} \\ q^{4 \times z} = q^{12} \\4 z = 12 \\ \frac{4z}{4} = \frac{12}{4} \\ z = 3[/tex]

I used the laws of exponents.

Using the figure below, Maggie used the definition of vertical angles to help her solve for x. Since vertical angles are congruent, she set the two given expressions equal to each other. After solving for x, her teacher said she got the wrong value for x. Explain where Maggie made her mistake when solving for x.

Answers

Using vertical angles, Maggie made her mistake when combining the like terms of x, which has a result of -3x and not 3x, hence the correct result is of x = 9.

What are vertical angles?

Vertical angles are two angles that are opposite by the same vertex when two lines cross each other, and they are congruent, that is, they have the same measure.

For this problem, the vertical angles are given as follows:

4x + 2.7x - 25.

Since they are congruent, we can solve for the variable x as follows:

4x + 2 = 7x - 25.

Moving all the terms with x to the left side of the equality and all the constant terms to the right side, with opposite signal, we have that:

4x - 7x = -25 - 2

Combining the like terms, it is found that:

-3x = -27.

Here happened Maggie's mistake, as 4x - 7x = -3x, hence the correct solution is given by:

3x = 27

x = 27/3

x = 9.

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a motar racing circuit has length 5 5/6 miles. A straight section of the circuit has a length 1 1/4 miles. what fraction of the circuit is the straight section. give your answer in the simplest form

Answers

The fraction of straight section of motor racing circuit is 3/14 miles.

To find the fraction of circuit which is straight, we will perform division. The fraction will be found as - Fraction = length of straight section ÷ total length of motor racing circuit

Keep the values in mentioned relation to find the fraction of circuit which is straight.

Converting the mentioned lengths from mixed fraction to fraction.

Length of motor racing circuit = (6×5 + 5)/6

Length of motor racing circuit = 35/6

Length of straight section of circuit = (4×1 + 1)/4

Length of straight section of circuit = 5/4

Fraction of straight circuit = (5/4)/(35/6)

Simplifying the fraction

Fraction of straight circuit = (5×6)/(35×4)

Performing multiplication in numerator and denominator

Fraction of straight circuit = 30/140

Performing division

Fraction of straight circuit = 3/14 miles

Thus, the straight section is 3/14 miles.

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2) What is the equation for the below function? Show your work!

Answers

The equation for the given function passing through (0,5) and (4,0) is equal to y = (-5 /4)x +5.

As given in the question,

As shown in the graph drawn we have

( x₁ , y₁ )=(0, 5)

( x₂ , y₂ )=( 4, 0)

Equation for the given function passing through ( x₁ , y₁ ) = (0, 5) and

( x₂ , y₂ )=( 4, 0) is given by :

( y - y₁ )/ (x -x₁ )=( y₂ - y₁ )/( x₂ - x₁ )

⇒( y -5) / (x -0)=( 0 -5)/( 4 -0)

⇒( y - 5) /x=-5/4

⇒y -5=(-5/4)x

⇒y=(-5/4)x + 5

Therefore, the equation for the given function passing through (0,5) and (4,0) is equal to y=(-5 /4)x +5.

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y’all pls help smakhwhwhdhdj

Answers

Answer:

x = 22° (alternate angles, M//N)

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