Mathematics High School

K(x) = 2x^2 + 7
What is k(4)

Answers

Answer 1

Answer:maybe this helps

Step-by-step explanation: k*(x)-(2*x^2+7)=0

STEP

1

:

Equation at the end of step 1

kx - (2x2 + 7) = 0

STEP

2

:

Trying to factor a multi variable polynomial

2.1 Factoring kx - 2x2 - 7

Try to factor this multi-variable trinomial using trial and error

Factorization fails

Equation at the end of step

2

:

kx - 2x2 - 7 = 0

STEP

3

:

Solving a Single Variable Equation:

3.1 Solve kx-2x2-7 = 0

In this type of equations, having more than one variable (unknown), you have to specify for which variable you want the equation solved.

We shall not handle this type of equations at this time.

Related Questions

Solve for x: 3x − 2 > 5x + 10. (5 points)

Question 9 options:

1)

x > 6

2)

x −6

Answers

Answer:

x < -6

Step-by-step explanation:

3x - 2 > 5x + 10

first step is to isolate x

3x -2 >5x +10

3x > 5x + 10 + 2

3x -5x > 10 + 2

now that we have 3x and -5x we can combine them

-2x > 10 + 2

now add 10 +2 =12

-2x > 12 (now divide by -2)

x < -6 (when we divide we flip the inequality sign)

Solve: 7n + 5 = -44 HELPPPPPPPPPPP

Answers

Answer:

-7

Step-by-step explanation:

7n+5=-44

-5 - 5

7n=-49

7/7 -49/7

n = -7

(82-25) ÷ (24 ÷ 6) + 32

Answers

Answer:46.25

Step-by-step explanation:

(82-25)divide(24/6)+32

    v                    v

         57/4+32

            v

         14.25 +32

                  v

            46.25

Charlie started his candy sale with 48
Candy bars. Now he has 32 candy bars. Find
the percent decrease.

Answers

Answer:

I think its 7% but I could be wrong

Reflect (4, -5) over the x axis

Answers

Answer: (4,5)

The answer is (4,5)

your welcome

Answer

4,5

Step-by-step explanation:

is your awnser......

284 + 0 = 284 is an example of which property?

Answers

This would be the Identity Property :)

WANT BRAINLIEST? look up the case of genie wiley and tell me your reaction. its literally sooo sad why would someone do that???

Answers

Answer:

^_^

Step-by-step explanation:

3. Solve for x: (x-3)2 =16

Answers

Answer:

x = 11

Step-by-step explanation:

(x - 3)2 = 16

simplify

2x - 6 = 16

add 6 to both sides

2x -6 + 6 = 16 + 6

2x = 22

divide by 2

2x/2 = 22/2

x = 11

Answer:

x=11

Step-by-step explanation:

11-3=8

8x2=16

Hope this helps you! Happy holidays!

Bill is going for a run. He runs for 19.2 miles at a speed of 6 miles per hour. For how many hours does he run

Answers

Answer:

3.2miles per hour

Step-by-step explanation:

19.2 / 6 = 3.2

please help me with these problems!!!

Answers

Answer:

A=7 B=4 C=7 D=15

Step-by-step explanation:

IM TRYIN DEKU

Helpppppppppppppp ppppppppp

Answers

Answer:

no it does not. that doesn't make sense haha

what value (s) for n will make this expression true?

Answers

Answer:

0 and 3.5

Step-by-step explanation:

Answer:

0 and 3.5

Step-by-step explanation

Ye

Maximum value of p plz help

Answers

Answer: sorry i cant help but i love the username

Step-by-step explanation:

PLEASE HELP!!! WILL GIVE BRAIN!!!

Answers

Answer: the square root of -1 is i.

Step-by-step explanation:

Answer:j

Step-by-step explanation:

11.) The sum of four consecutive even
integers is 68. Find the four consecutive
even integers. What is the 3rd integer
in the sequence?

Answers

Answer:

Four consecutive even integers are 14, 16, 18 and 20
Third number in the sequence is 18

Step-by-step explanation:

Let N be the first even integer

Each consecutive integer is 2 away from the previous integer

Next consecutive integer = N + 2, next one = N+4 and the last one = N +6

Add these expressions together, set them equal to 68 to solve for N

==> N + (N +2) + (N +4) + (N + 6) = 68

==> N + N +2 + N +4 + N + 6 = 68

==> 4N + 12 = 68

==> 4N = 68-12

==> 4N = 56

N = 56/4 = 14

So the integers are 14, 16, 18 and 20

Third integer in the sequence is 18

In a class of 23 students, 16 have a brother and 15 have a sister. There are 11 students
who have a brother and a sister. What is the probability that a student chosen
randomly from the class is an only child?

Answers

Answer:

3/23

Step-by-step explanation:

11 students have a brother and a sister16 students have a brother and 16 - 11 = 5 have a brother only15 students have a sister and 15 - 11 = 4 have a sister only

So out of 23 students:

11 + 5 + 4 = 20 have a brother or sister or both

And therefore

23 - 20 = 3

students have no brothers or sisters

The required probability is:

3/23

What is the slope of the equation, y=3/4x +9

Answers

Answer:

3/4

Step-by-step explanation:

PLEASE HELP I REALLY NEED IT! PLEASE ASAP!



If possible please give a short explanation of your answer, I just don't want people choosing random answers for points. Thank you so much! :D

1. Let f(x)=3x+1 and g(x)=2x2−1

Find f(g(2))
A 97
B 28
C 10
D 22

2. Let f(x)=2x and g(x)=(x−3)2


Find g(f(x)) (there may be more than one answer)

A 4x^2−9
B 4x^2−12x+9
C 4x+9
D 4x^2+10x−9

Answers

firstly in g(x) put 2 so =7 and then put 7 in f(x) and that will be 22

What else is needed to prove these triangles congruent using the ASA postulate?

Answers

The thing needed to prove these triangles congruent using the ASA postulate is B. Nothing else is needed to use the ASA postulate.

What is the ASA postulate?

The triangles are said to be congruent if two angles and the included side of one triangle match two angles and the included side of another triangle.

It should be noted that the triangles given are identical and the sides are equal.

Therefore, the thing needed to prove these triangles congruent using the ASA postulate is that nothing else is needed to use the ASA postulate.

Learn more about postulate on:

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Find the area of a square with a side measurement of 3 1/2 inches.

Answers

Answer:

A=9

Step-by-step explanation:

9) Which equation in IS direct variation?
a. y = 20x
b. 4x + 2y = 20
c. y = |x|
d. y = x2

Answers

Answer:

the answer is B.

Step-by-step explanation:

the answer is b because both sides increase

U-Move-It charges $18 per hour, plus a fueling fee of $45 to rent a truck. Bobby needs to rent a truck and can spend no more than $145. What could the inequality expression look like for this word problem?

WILL GIVE BRAINLIEST

Answers

Answer:

[tex]x\leq 5[/tex]

Step-by-step explanation:

45+18x=145

18x=100

x<=5

So x is equal to or less than 5

Hope this helps plz hit the crown :D

Given the graph below, solve the system of equations.

​

Answers

Answer:

(4, 3 )

Step-by-step explanation:

Given a system of equations graphically, then the solution is at the point of intersection of the 2 lines.

The lines intersect at (4, 3 ) ← solution

the number of units expected to be sold is uniformly distributed between 300 and 500. if r is a random number between 0 and 1, then the proper expression for sales is

Answers

300 + (200)r is the proper expression for sales if the number of units expected to be sold is uniformly distributed between 300 and 500. If r is a random number between 0 and 1.

What is a random number?

a random number is a number chosen by chance -- i.e., randomly, from a set of numbers. All the numbers in a specified distribution have equal probability of being chosen randomly.

Given that r is a random number between 0 and 1.  it is uniformly distributed between 300 and 500 will be done by using the formula of 300+200r.

If r = 0, 300+200r will result in the output as 300

If r = 0.5, 300+200r will result in the output as 400

If r= 1, 300+200r will result in the output as 500

Hence ,the proper expression for sales is 300+200r

learn more about of random number here

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-20 + 6 = - +5 Approximate the solution to the equation above using three iterations of successive approximation. Use the graph below as a starting point. 6 2 3 X х -6 14 - 2 6 2 -6 OA I -100 OB. 1 13 16 15 16 O C. 15 O D. r 021+​

Answers

Answer:

its b

Step-by-step explanation:

i did that test

The required solution after three successive iterations is near x = 7/8. Option c is correct.

What is the equation?

The equation is the values of two expressions that are equal. In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal.

Here, we have,

Equation is -2x + 6 = -(2/3)^x + 5. Approximate the solution to the equation above using three iterations of successive approximation.

given that,

-2x + 6 = -(2/3)^x + 5

Arranging the equation

(2/3)^x - 2x + 1 = 0

Since the solution of the equation is when f(x) = 0 at near to  x = 0.8

f(x) = (2/3)^x - 2x + 1

First iteration at x =0.8

f(0.8) = 0.123

It will go up more to get exact zero, so

Second iteration at x = 0.9

f(0.9) = -0.106

It seems that zero is near 0.9 so will go down

The third iteration at x = 0.87

f(0.87) = -0.037

Here , solution is much near to x = 0.87 or x =7/8.

Thus, the required solution after three successive iterations is near x = 7/8.

Learn more about the equation here:

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ASAP HELP ME

Find the area of the parallelogram

Answers

It’s 45, the answer is right on the screen

Solve the problem
( SHOW your work )


10x – 3 = 8x + 5

Answers

Answer:

x =4

Step-by-step explanation:

10x – 3 = 8x + 5

Subtract 8x from each side

10x-8x – 3 = 8x-8x + 5

2x-3 =5

Add 3 to each side

2x-3+3 =5+3

2x= 8

Divide by 2

2x/2 =8/2

x =4

Help, me with this oof

Answers

Answer:

I'm confused

Step-by-step explanation:

what is it

How do we help? theres no question??

a civil engineer is drawing a plan for the location and length of a new underground sewer pipe on a coordinate grid. the pipe on the plan will run from point n ( a , −2) to point p (1, b ) on the coordinate grid. which expression represents the shortest distance between n and p in units? ( a 2)2 (1 − b )2 (1 − a )2 ( b 2)2

Answers

The shortest distance between n and p in units = (1 − a )2+ ( b+ 2)2.

The correct option is B.

Distance between two points:

The length of line segment connecting any two points is known as their distance from one another. The length of a line segment connecting the two given coordinates can be used to calculate the distance between the points in coordinate geometry.

What is coordinate geometry used for?

The study of geometry utilizing coordinate points is referred to as coordinate geometry (or analytic geometry). The distance between two points can be calculated using coordinate geometry, as can the areas of triangles in the Cartesian plane, the midpoints of lines, and more.

According to the given information:

The expression that represents this same shortest distance between P and N in units is found to use the distance between two points to be:

[tex]d=\sqrt{(1-a)^2+(b+2)^2}[/tex]

The distance between two points, (x1,y1) and (x2,y2), is represented by:

[tex]d=\sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}[/tex]

the distance between the points N(a, -2) and P(1,b) is:

[tex]\begin{aligned}&d=\sqrt{(1-a)^2+(b-(-2))^2} \\&d=\sqrt{(1-a)^2+(b+2)^2}\end{aligned}[/tex]

The shortest distance between n and p in units = (1 − a )2+ ( b+ 2)2.

To know more about coordinate geometry visit:

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I understand that the question you are looking for is:

a civil engineer is drawing a plan for the location and length of a new underground sewer pipe on a coordinate grid. the pipe on the plan will run from point n ( a , −2) to point p (1, b ) on the coordinate grid. which expression represents the shortest distance between n and p in units?

A. ( a +2)2+ (1 − b )2

B.  (1 − a )2+ ( b+ 2)2

is this equation true?
y^4 + y^5= y^9

Answers

No, it is not true
You cannot add expressions with the same base while adding their exponents. This only works when you multiply the two numbers

Answer:

NO it is not true

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