Evaluate the function

Evaluate The Function

Answers

Answer 1

Answer:

f = 9.25 (I think but maybe I read f(4) wrong)

Step-by-step explanation:

so f(4) means x = 4.

The new equation is

f(4) = 2x4 ^2 - 4 + 9
you first do 2x4^2. The minus 4. The add 9.
the answer to that is 4f = 37

Then solve

F = 9.25


Related Questions

Find the missing side lengths.

Answers

Answer:

x= 6

y= 2

Step-by-step explanation:

conversion factor is 2, so you have to divide by 2 in order to get your answers :)

Answer:

x = 6

y = 2

Step-by-step explanation:

Just divide 6 a number and you have to get 3, in this case it's 2.

So then divide 4 and 12 by 2, and that will get you the answer.

Hope this helps!

5. Which of the following algebraic expressions could
represent forty less than one-half the value of x?
A. 40 -
2
c. 3 (v – 40)
.
)
NINI
B.
40
D.
- 40
x
2
Select one:
O a. A
O b. B
Ос. С
O d. D.

Answers

Answer:

dang i had a hard time on this wish i could help

Step-by-step explanation:

a right triangle has legs measuring 20 in. and 28 in. what is the length of the hypotnuse? round to the nearest tenth.

Answers

Let Hypotenuse be x

X² = 20² + 28²

x² = 400 + 784

[tex] \tt x= \sqrt{400 + 784 } [/tex]

[tex] \tt x= \sqrt{1,184} [/tex]

[tex] \tt x= 34.4[/tex]

The top person is correct

In the table below, x represents miles traveled and y represents the cost to travel by train.


Miles, x

Cost, y

2

8.50

5

15.25

8

22.00

12

31.00


Which linear equation represents the situation?


y = 2 x + 8.50

o y = 2.25 x + 4.00

y = 6.50 x + 2.25

y = 12 x + 22.50


It's second option, just didn't see a question up for this one

Answers

Answer:

Y=2.25x+4.00 would be the answer!:)

Step-by-step explanation:

The slope is 2.25 and the starting point is 4.00

To find the slope subtract 8.50 and 15.25 then divide it by 3

Answer:

B.) y = 2.25x + 4.00







Step-by-step explanation:

Have a great rest of your day
#TheWizzer

Solve the inequality and graph the solution on the number line.

h−9 ≤ 3
I couldn't screenshot the graph

Answers

Answer:

A closed circle on 12, going to the left.

Step-by-step explanation:

h − 9 ≤ 3

  + 9 + 9

h ≤ 12

Look for a closed circle on 12, going to the left.

Hope that helps!

Which of the following ordered pairs are solutions to the system of equations below?
a. (1, 6)
b. (1, -6)
3. (-1, -6)
4. (-1, 6)

Answers

Given :-

A system of linear equation in two variables .

To Find :-

The solution set of the system .

Solution :-

The given system of equation is ,

[tex]\begin{cases} 3x + 2y = 9\dots (i) \\\\ y = 4x + 10 \dots (ii)\end{cases}[/tex]

Firstly , taking equation (ii) ,

[tex] y = 4x +10[/tex]

On subtracting y on both sides, we have ;

[tex] 4x - y +10 = 0[/tex]

Multiplying both sides by 2 ,

[tex] 2(4x -y+10)=2(0)[/tex]

Simplify,

[tex] 8x - 2y = -20 \dots (iii)[/tex]

Adding equation (i) and (iii) ,

[tex] 3x + 2y + 8x - 2y = -20+9[/tex]

Add and subtract the like terms ,

[tex] 11x = -11 [/tex]

Divide both sides by 11 ,

[tex] x = -1 [/tex]

Now substitute this value in equation (i) ,

[tex] 3(-1) + 2y = 9\\ \\ -3 + 2y = 9 \\\\ 2y = 9+3 \\\\ 2y = 12 \\\\ y =\dfrac{12}{2}\\\\ y = 6[/tex]

Hence the correct option is 4 (-1,6) .

I hope this helps . Let me know if you need any further clarification .

Option 4.

For clear understanding refer to the attachment.

A regular octagon has a radius of 6 ft and a side length of 4. 6 ft. A regular octagon has a radius of 6 feet and side lengths of 4. 6 feet. What is the approximate area of the octagon? 71 ft2 101 ft2 110 ft2 202 ft2.

Answers

The regular octagon has eight equal sides. Then the area of the regular octagon of side length be 4.6 is 102 ft².

What is a regular octagon?

It is a polygon that has eight equal sides. In a regular octagon, the opposite sides are parallel. And its diagonals are also equal and intersect at mid-point.

Given

A regular octagon has a radius of 6 ft and a side length of 4.6 ft.

We know the formula for the regular octagon.

Area of the regular octagon = 2(1 + [tex]\sqrt{2}[/tex]) a²

Where a be the side of a regular octagon.

Then the area of the regular octagon will be.

[tex]\rm Area = 2 (1+\sqrt{2} ) a^2\\\\Area = 2*(1 + 1.414) *4.6^2\\\\Area = 2 * (2.414)* 21.16\\\\Area = 102.16[/tex]

Thus, the area of the regular octagon of side length be 4.6 is 102 ft².

More about the regular octagon link is given below.

https://brainly.com/question/858868

In the diagram below, AB is parallel to CD. What is the value of x?
72
А
B
D
O 72
O 18
62
108

Answers

Answer:

x = 72

Step-by-step explanation:

angles x and 72° are corresponding angles and are congruent , then

x = 72

The value of x is 72 degree.

Option A is correct.

What is Parallel line?

The basic qualities listed below make it simple to identify parallel lines.

Parallel lines are defined as straight lines that are always the same distance apart.Parallel lines never intersect, regardless of how far they are extended in either direction.

We have the parallel line AB || CD.

As, we know the parallel line have following property

Corresponding Angle are EqualAlternate Interior Angle are EqualAlternate Exterior Angle are Equal

Now, from the figure using Corresponding angle

x = 72 degree

Thus, the required angle is 72 degree.

Learn more about Parallel line here:

https://brainly.com/question/16701300

#SPJ7

identify the type of function represented by f(x)(1)/(2)*(3)^(x)

Answers

it’s an exponential function

Find the length of the third side if necessary write in simplest radical form

Answers

a^2 + b^2 = c^2

c is the hypotenuse of the right triangle.

answer: 6

You have $100 to spend on Christmas gifts for your family. You buy the shirt below on sale for $15 for yourself. The remaining amount was split evenly on gifts for your four family members. How much did you spend on each family member?

Answers

Answer:

$21.25

Step-by-step explanation:

Step one: $100 and you subtract the $15 you spent on a shirt which leaves you with $85.

Step 2: finally you need to divide 4 into 85....Calculate...... You spend $21.25 on each member

A father is 3 times as old as his son, 9 years ago the father was 4 times as old
as his son. find their present ages.​

Answers

[tex]\bold{\huge{\green{\underline{ Solution }}}}[/tex]

Given :-

We have given in the question that, A father is 3 times as old as his son 9 years a ago, The father was 4 times as old as his son

To Find :-

We have to find the present ages of son and father

Let's Begin :-

Let the present age of son be x

A father is 3 times old as his son

Therefore,

Present age of the father will be

[tex]\bold{ = 3x\:\: years }[/tex]

9 years ago,

The age of the son was

[tex]\bold{ = ( x - 9)\: years}[/tex]

So,

Age of the father was

[tex]\bold{ = 3(x - 9) \:years ...eq(1)}[/tex]

But,

It is given that, 9 years a ago father was 4 times as old his son age That is, [tex]\bold{ 4(x - 9) ...eq(2)}[/tex]

From eq(1) and eq(2) :-

[tex]\sf{3(x - 9) = 4(x - 9)}[/tex]

[tex]\sf{3x - 27 = 4x - 36}[/tex]

[tex]\sf{3x - 4x = -36 + 27}[/tex]

[tex]\sf{-x = -9 }[/tex]

[tex]\bold{\pink{ x = 9 \: years }}[/tex]

Thus, The present age of the son is 9 years

Therefore,

Age of the father will be

[tex]\sf{ = 3 × 9 }[/tex]

[tex]\bold{\red{ = 27 \: years }}[/tex]

Hence, The present ages of son and father is 9 years and 27 years

I have the equation I just don't know how to solve it

Answers

the answer to your question is a.

Jose rode his bike for 18 miles in one hour. Which graph best represents y, the number of miles a Jose can travel in x hours?
Explain Please!

Answers

Answer:

the answer is option C..

Answer:

graph c

Step-by-step explanation:

if Jose rode his bike for 18 miles in one hour, the graph has to show it. Graph c is the only one that shows 18 miles in one hour, being the point (1,18)

A cone-shaped tent has a diameter of 12 ft and a height of 6 ft. What is the approximate volume of the tent? Use 3. 14 to approximate pi, and express your final answer as a decimal. Enter your answer as a decimal in the box. Ft³.

Answers

Answer:

226.08 ft³

Step-by-step explanation:

[tex]\textsf{volume of a cone}=\frac{1}{3}\pi r^2h[/tex]
(where [tex]r[/tex] = radius of the base and [tex]h[/tex] = height)

[tex]\textsf{radius}\ r=\frac{1}{2}\ \textsf{diameter}[/tex]

Given:

diameter = 12ft  ⇒  radius = 12 ÷ 2 = 6 ftheight = 6ft[tex]\pi[/tex] ≈ 3.14

[tex]\implies \textsf{volume of tent}=\frac{1}{3}\times3.14 \times 6^2 \times 6=226.08 \ \textsf{ft}^3[/tex]

.
Find the values of x and y
3. In the Diagram, DEFG = WXFG.
E
х
75°
F
60°
question # 3
(15x + ylº
G 3x - 5
0
W

Answers

Answer:

x = 5 , y = 15

Step-by-step explanation:

Since the figures are congruent then corresponding sides and angles are congruent , that is

WG = DG ( substitute values )

3x - 5 = 10 ( add 5 to both sides )

3x = 15 ( divide both sides by 3 )

x = 5

and

∠ WGF = ∠ DGF , that is

15x + y = 90 ( substitute x = 5 )

15(5) + y = 90

75 + y = 90 ( subtract 75 from both sides )

y = 15

a car of mass 1000kg traveling at a speed of 108km/hr a long a level road is brought to stop in a distance of 70m. what was the coefficient of friction​

Answers

Answer:

Step-by-step explanation: a car of mass 1000kg traveling at a speed of 108km/hour a long a level road is brought to stop in a distance of 70m. what was the coefficient of friction Gradyn is waiting for your help. Add your answer and earn points.

10/15 = x/20 in decimal

Answers

1. Observe problem

Restriction: Decimal Form

Least common multiple of 15 and 20 is: 60

Time sixty on both sides

40=3x

x=40/3

Therefore, decimal representation would be 13.33333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333...

Answer: 13.3 repeating

Step-by-step explanation:

First you cross multiple 10 times 20 to get 200=15x. Then you divide 200 by 15 to get 13.3 repeating

Will someone help out pleaseeeeee

Answers

Answer:

(x-2) (x+ 8)

that's the answer to the question

i need help, plsss
4(-4x-1)+x+3=44

Answers

Answer:

x = -3

Step-by-step explanation:

Start by distributing the 4 to the terms in the parentheses:

4(-4x)+4(-1)+x+3=44

-16x-4+x+3=44

Combine like terms

-15x-1=44

Add 1 to both sides

-15x-1+1=44+1

-15x=45

Divide both sides by -15

x = -3

Answer: x = -3

Step-by-step explanation: distribute, combine, divide, you get x = -3

Which ordered pair is the solution to this system of equation?

y = x - 1

x + y = 5


(-6, -1)
(-6, -1)

(7, -2)
(7, -2)

(-1, 6)
(-1, 6)

(3, 2)

Answers

Answer:

  (d)  (3, -2)

Step-by-step explanation:

It is easy enough to check the offered choices. All but the last fail in the first equation.

  (-6, -1): -1 ≠ -6 -1

  (7, -2): -2 ≠ 7 -1

  (-1, 6): 6 ≠ -1 -1

  (3, 2): 2 = 3 -1 . . . . . this is your solution point

If the 0 in the numeral 60428 is changed to 6 , by how much is the new number greater?

Answers

I think it should be 6000 more! If not im so sorry!! Have a nice day!!

Can you please help with problem 3

Answers

Answer: 6 and 8

Step-by-step explanation:

(The top and bottom)

A trapezoid has two bases and two legs. As seen, the lengths that represent the bases of the trapezoid are the parallel sides 8 and 6. This is because they go on straight and never intersect each other, which makes them parallel. The length that represents the height of the trapezoid is 4, which is the straight line that connects both bases.

Hope this helps =)

What is (2x⁵+2x³-5x²-x+4)÷(x²+x+2)?

Answers

Answer:

2x³ - 2x² - 1 + (6 / x² + x + 2)

A boat is heading towards a lighthouse, whose beacon-light is 105 feet above the water. From point AA, the boat’s crew measures the angle of elevation to the beacon, 7^{\circ}

, before they draw closer. They measure the angle of elevation a second time from point BB at some later time to be 21^{\circ}

. Find the distance from point AA to point BB. Round your answer to the nearest tenth of a foot if necessary.

Answers

Answer:

  AB ≈ 581.6 ft

Step-by-step explanation:

The triangle from point A to the base of the lighthouse to the light beam can be modeled as a right triangle with the side opposite the angle being given. That means the distance from A to the base of the lighthouse is found from the tangent relation:

  Tan = Opposite/Adjacent

  tan(7°) = (105 ft)/A

  A = (105 ft)/tan(7°)

Using similar reasoning, the distance to B is ...

  B = (105 ft)/tan(21°)

Then the distance from A to B is ...

  AB = (105 ft)/tan(7°) -(105 ft)/(tan(21°)) = (105 ft)(1/tan(7°) -1/tan(21°))

  AB ≈ 581.6 ft

_____

Additional comment

We know that 1/tan(7°) = cot(7°) = tan(83°). This means the relation can be written ...

  AB = (105 ft)(tan(83°) -tan(69°))

One more I think!

We got this!

Answers

We have a systems of linear equations here. We need to use substitution, which means we isolate a variable and then solve for the other variable.

I will isolate the y in 4x + y = 12. Firstly, we need to subtract 4x from both sides. This gives us y = -4x + 12. Next, we need to plug y into the other equation. This gives us 6x - 7(-4x + 12) = -16. Once we simplify that, we get 6x + 28x - 84 = -16. To simplify further, we get 34x - 84 = -16. Then, we need to add 84 to both sides. This gives us 34x = 68. Now, we need to divide both sides by 34. Our answer for x is x = 2.

We will now need to plug x into y = -4x + 12. Our equation is now y = -4(2) + 12. Once simplified, we get y = 4.

The answer is x = 12 and y = 4, or (12, 4).

What is the value of x in the equation one-fifthx – two-thirdsy = 30, when y = 15? 4 8 80 200.

Answers

On solving the linear system, for the value of y = 15, the value of x is 200. The correct option is D.

What is the linear system?

It is a system of an equation in which the highest power of the variable is always 1. A one-dimension figure that has no width. It is a combination of infinite points side by side.

Given

The linear equation is shown below.

[tex]\rm \dfrac{1}{5}x - \dfrac{2}{3}y = 30[/tex]

The equation can be written as

[tex]\rm 3x - 10y = 450\\[/tex]

For y = 15, the value of x will be.

[tex]\begin{aligned} \rm 3x - 10*15 &= 450\\\\\rm 3x - 150 &= 450 \\\\\rm 3x &= 600\\\\\rm x &= 200\\\end{aligned}[/tex]

The value of x is 200.

Thus, option D is correct.

More about the linear system link is given below.

https://brainly.com/question/20379472

If you can drive 300 km on 16 litres of petrol how far can you drive on 20 litres

Answers

Answer:

The answer is 375

Step-by-step explanation:

First you would need to divide 300 and 16 then you would get 18.75 then you multiply that by 20 and then you get your final answer which is 375.

Which one is correct?

Answers

Answer:

C, there are 9 pencils in each row.

Step-by-step explanation:

find the slope intercept

Answers

Answer:

11 is B and 12 is A

Step-by-step explanation:

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