solve 2x2 + 16x + 6 = 0 by completing the square. Round the solutions to the nearest hundredth

Answers

Answer 1
Solve by completing the square;
X= plus or minus the square root of 13 minus 4
Or in decimal form
X= -0.39. X= -7.61

Related Questions

Enzo drew Triangle K L N. In Enzo's triangle, Measure of angle K is represented as x degrees. The measure of Angle L is 5 times Measure of angle K. The measure of Angle N is 16 degrees less than 8 times Measure of angle K. Which statements must be true about the angle measures of Enzo's triangle? Check all that apply. Measure of angle K = x degrees Measure of angle L = (5 x) degrees Measure of angle N = (16 minus 8 x) degrees Measure of angle K + measure of angle L = measure of angle N Measure of angle K + measure of angle L + measure of angle N = 180 degrees

Answers

Answer: (1) Measure of angle K = x degrees

(12) Measure of angle L = (5x) degrees

(3) Measure of angle k + Measure of angle L + Measure of angle N = 180 degrees

Step-by-step explanation: First of all, what we have is a triangle, and one of the properties of a triangle is all three angles add up to 180 degrees. This simply means that the addition of angles K and L and N would be equal to 180 degrees.

The question states that angle K is represented as x degrees, and angle L is 5 times the measure of angle K. Therefore, if K is x degrees, then L is 5 times x, which becomes 5x degrees. Also, angle N is given as 16 degrees less than 8 times the measure of angle K (x degrees). Eight times the measure of angle K is given as 8x. Sixteen degrees less than 8x would now become, 8x - 16 (degrees). Therefore, the angles have been derived as;

Angle K = x degrees

Angle L = 5x degrees

Angle N = 8x - 16 degrees

Having known that one of the properties of any triangle is all angles adding up to 180 degrees, we can now derive the following equation;

x + 5x + 8x - 16 = 180

14 x - 16 = 180

Add 16 to both sides of the equation

14x = 196

Divide both sides of the equation by 14

x = 14

Therefore, angle K = 14 degrees (x), angle L = 70 degrees (5x) and angle N = 96 degrees (8x - 16)

*14 + 70 + 96 = 180*

Answer:

145

Step-by-step explanation:

Please answer correctly !!!! Will mark brainliest !!!!!!!!!!!!!!

Answers

Answer:

6 seconds

Step-by-step explanation:

- ( 6 - 2)^2 + 16

- (4)^2 + 16

- 16 + 16

= 0

The ball is hits the ground or is at 0 height when x = 6.

First, tell whether each decimal is a fraction or a mixed number.
Then, write it in simplest form. 0.85​

Answers

Answer:

Proper fraction.

Step-by-step explanation:

[tex] \frac{85}{100} \\ \\ simplify to= \frac{17}{20} [/tex]

Dwie proste przecinają się, tworząc kąty ostre i rozwarte. Miara kąta ostrego jest dwukrotnie mniejsza od miary kąta rozwartego. Oblicz miarę kąta rozwartego daje naj

Answers

Answer:

The obtuse angle is 120°.The acute angle is 60°.

Step-by-step explanation:

This problem is about two crossing line, when that happens, we have 4 angles, two acute and two obtuse, where adjacent angles are supplementary and vertical angles are equal.

We can form the expression

[tex]A = \frac{O}{2}[/tex]

Where [tex]A[/tex] is an acute angle and [tex]O[/tex] is an obtuse angle.}

Using all the given information, we have

[tex]O + \frac{O}{2}=180\°[/tex]

Solving for [tex]O[/tex], we have

[tex]\frac{3O}{2}=180\\ O=120\°[/tex]

Therefore, the obtuse angle is 120°, which means the acute angle is 60°, because they are supplementary angles, as we said befor.

LMN is a right triangle. True or False

Answers

Answer:

False

Step-by-step explanation:

Let us check using Pythagorean Theorem

[tex]c^2 = a^2 + b^2[/tex]

Where c is the hypotenuse (14), a is the base (13) and b is the perpendicular (5)

Putting in the above formula

[tex]14^2 = 13^2 + 5^2[/tex]

196 = 169+25

196 ≠ 194

So, It is not a right angled triangle

the area of a right angled triangle is 600cm^.if base of the base of the exceeds the altitude by 10,find the dimensions of the triangle


Answers

Answer:

b => base  => 40 cm

h => altitude => 30 cm

A = h*b/2

h=b-10

600=(b-10)b/2

600 = (b^2-10b)/2

1200=b^2-10b

b^2-10b-1200=0

(b-40)(b+30)=0

b=40 cm

h=b-10 = 40-10=30

The point-slope from of a line that has a slope of -2 and passes through the point (5,-2)

Answers

Step-by-step explanation:

y + 2. = -2(x - 5)

y + 2 = -2x + 10.

y = -2x + 8

find the number of regular tiles each of 8 cm by 6 cm that need to be fitted into a rectangular floor of 3.6 m by 2.4 m

Answers

Answer: 18 tiles

Step-by-step explanation:

Area of the floor = l x w = 3.6 * 2.4 = 8.64 sq. m.

Area of one tile = l x w = 8 * 6 = 48 cm = 0.48 m

No. Of tiles that can fit the floor =

8.64 / 0.48 = 18

Multiply.Write your anwser in simplest form. 7/12 x 3/4

Answers

Answer:

Multiplying the numerators and denominators, we get 21 / 48 = 7 / 16.

plzz answer this qustion i will make brainliest

Answers

Answer:

By the Pythagorean Theorem

[tex]DB=\sqrt{AD^2+AB^2}=\sqrt{8.9^2+17.6^2 } =19.72232[/tex]

In the figure triangles ABD(red) and ADE(green) are similars because:

AED=DAB=90

ADE common angle

Then  [tex]\frac{AD}{BD}= \frac{AE}{AB}=\frac{DE}{AD}[/tex]

[tex]b=AE=\frac{AD\times AB}{BD}= \frac{8.9\times 17.6}{19.72}=7.94227[/tex]

Onsider the enlargement of the triangle with a scale factor of 8 2 triangles have corresponding side lengths of 8 centimeters and 64 centimeters. Side A corresponds with a side with length of 2 centimeters. Side A = 2(8) = 16 cm. What is the length of side B?

Answers

Answer: Incomplete question

Step-by-step explanation: The question does not provide a diagram, and that makes it difficult to determine which side is labelled as B. Nevertheless I will give you clues to help you answer your question by explaining  this topic which is SIMILAR TRIANGLES.

When you have been given two triangles with a scale factor, the scale factor is an important part of answering the question eventually.

Consider a triangle which I shall call triangle 1, with sides abc and another triangle ABC, which I shall call triangle 2. The scale factor is 8, which means triangle 1 can be enlarged into a similar triangle by simply multiplying any corresponding side by 8. Hence, if in triangle abc, you have a side that measures 8 centimetres, the corresponding side in triangle ABC would be 8 times 8 which equals 64 centimetres.

The question states that side A corresponds with a side measuring length 2 centimetres. That means side A is derived as 2 times 8 which equals 16 centimetres, as explained above (and as shown in the question). Therefore side B which is yet unknown shall also be the corresponding side in triangle 1 multiplied by 8.

Since the corresponding side was not stated, I shall assume for the sake of explanation that the corresponding side is 10 centimetres. That means, side B would now be derived as 10 times 8 which equals 80 centimetres.

These can be expressed mathematically as follows;

If A = 16, a = 2 and b = 10 then B would be calculated as follows;

A/a = B/b

16/2 = B/10

By cross multiplication, you now have

16 * 10 = 2 * B

160/2 = B

80 = B

Following these steps along with the explanations, the length of side B can be derived if the value of its corresponding side is given or a diagram is provided.

Answer:

its 40 because the dude above is an but face (sorry) (not sorry u suk)

Step-by-step explanation:

welcum

what’s the answers ?

Answers

B and D

Step-by-step explanation:

I'm pretty sure its B because an acute angel measure less than 90°

I hate math bro please help me ill mark u brainliest

Answers

Please mark me brainless :)

Which statement best describes the function below

Answers

Answer:

Option D. will be the answer.

Step-by-step explanation:

Given function is f(x) = 2x³ + 2x² - x

Table of input and output:

Input (x)     -2        -1         0         1          2

Output (y)  -6         1         0         3        22

Option (A).

From the graph attached,

It passes the vertical line test.

Option (B).

Since every input value gives a unique output value, it's not a many-to-one function.

Option (C).

It's a function.

Option (D).

It's a one-to-one function.

Answer: It is a many-to-one function.

Step-by-step explanation:

just did the test

The slope of line p is _, and the slope of line Q is _.

Answers

Answer:

From the graph, the slope of line p is 3 and the slope of line q is -3.

Question 19 / 50
In a class of forty students, one fifth of the students also play on the school's
football team. If four more students from the class join the football team, what
percentage of students in the class will be on the football team?
25%
30%
0 33%
O 35%
40%
Submit Answer

Answers

Answer: 30%

Step-by-step explanation:

1/5th of students = 1/5 x 40 = 8

If 4 more students join, they will be (8+4) 12 students

Percentage will be 12/40 x 100 = 30%

HELP ME ASAP FOR BRANETEST I MEAN IT >_

Answers

Answer:1 1/6

Step-by-step explanation:

You are graphing square ABCD in the coordinate plane. The following three of the vertices of the square: A(4,-7), B(8,-7), and C(8,-3.

Answers

If those are your 3 vertices for the square, the last one would be at (4, -3).

Please I need a answer for 5,6,7, and 8 !!! Please ill mark you as brainliest

Answers

Answer:

5. 48

6. 33

7. -16

8. -7

Step-by-step explanation:

[tex]5. \\8(10-4)=\\80-32=\\48[/tex]

[tex]6.\\(-4+-7)(-3)=\\(-4-7)(-3)=\\(-11)(-3)=\\33[/tex]

[tex]7.\\(-7+3)4=\\-4*4=\\-16[/tex]

[tex]8.\\-1(18-11)=\\-1(7)=\\-7[/tex]

Mateo's wage is £420 per week.
He spends 1/3 of his wage on food.
35% goes on the household bills and the rest is saved.
How much does Mateo save each week?

Answers

Answer:

He saves £133 every week

A movie complex with 3 theaters has a total capacity of 800 seats. There are 270 seats in Theater 1. There are 150 more seats in Theater 2 than in Theater 3. How many seats are in Theater 2?

Answers

Answer:

340

Step-by-step explanation:

No. of  seats in theater 1 = 270

Let the no. of  seats in theater 3 be x

given that

There are 150 more seats in Theater 2 than in Theater 3.

no. of  rooms in theater 2 =  no. of  rooms in theater 3 + 150

                                          x + 150

Total numbers of seats in all the theater = 270+ x + x+150 = 2x + 420

It is also given that total capacity is 800 seat

thus

Total numbers of seats in all the theater = 800

2x+420 = 800

=> 2x = 800 - 420 = 380

=> x = 380/2 = 190

Thus, no of rooms in theater 3 is 190.

No. of rooms in theater 2 is x + 150 = 190 + 150 = 340  ---> Answer

PLEASEEEEEEEEE HELPPPPPPPPPP 70-100 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!! I NEED ONE MORE ANSWER BC I WANNA SEE WHICH ANSWER IS THE GREATEST THAT I SAW BEFORE THIS ONE SO JUST ANSWER IT TRY TO DO A SWIMMING RELATED ONE YA THX

Instructions:

Think of an activity that you enjoy or are interested in. Some examples are reading, swimming, or leveling up your gaming character. Use your activity to work through the following problems:

Create a scenario that leads to an inequality of the form ax + b > c. You can use any of the inequality symbols (>, ≥, <, ≤) in your inequality. For this step, just write the word problem.

Write the inequality and show all work to solve the inequality.

Graph the solution to your inequality-ON A NUMBER LINE

Explain what your solution means in the context of the problem.

Answers

Answer and Explanation:

Gina wanted to swim at the pool. She is allowed to spend at most $30. The cost to swim in the pool is 3 dollars per hour plus a flat fee of $3. How many hours can Gina swim without going over her spending limit?

This problem can be represented by  [tex]3x+3\leq 30[/tex].

'x' would be the number of hours. "At most" means less than or equal to. So, the value of x would have to be less than or equal to 30.

[tex]3x+3\leq 30-3\\\\3x\leq 27\\\\3x/3\leq 27/3\\\\\boxed{x\leq9}[/tex]

So, Gina would have a maximum of 9 hours to swim in the pool.

Hope this helps.


Which expression represents the number of feet that are in x yards?


A)
12x


B)
36x


C)
3x


D)
x
3


pLS Help will mark brainlyiest

Answers

Answer:

C) 3x

Step-by-step explanation:

There are three feet in a yard. Yards are represented by x in this problem and therefore the answer is 3x.

Tony wants to put $318,000 in his retirement savings account. It earns an interest rate of 7.1% compounded quarterly. He wants to determine how much he will have in the account after 5 years, even if he makes no additional contributions or withdrawals to the account
A. $448099.52
B. $347242.34
C. $452115.44
D. $341186.28
which answer correct

Answers

Answer:

C. $452115.44

Step-by-step explanation:

To solve this, we will follow the steps below;

first write down the formula for  compound interest

A= P [ 1 + [tex]\frac{r}{n}[/tex]]^nt

where A is the ending amount

P represent the principal

r represent the interest rate

n represent the number of compounding a year

t represent the time {in years)

from he question above

p= $318 000

r = 0.071

n = 4  since is quarterly

t= 5

we can now proceed to insert the values into the formula

A= P [ 1 + [tex]\frac{r}{n}[/tex]]^nt

  =318 000 [1+[tex]\frac{0.071}{4}[/tex]] ^4(5)

  = $318 000 [1+[tex]\frac{0.071}{4}[/tex]] ^20

   =$318 000 [1+0.01775] ^20

    = $318 000 [1.01775] ^20

     =$318 000× 1.421747

      ≈$452 115.44

He will have $452 115.44 in the account

Please help!! Will give brainliest!
Solve for z show work

Answers

Answer:

18 1/2

Step-by-step explanation:

1/2z = 9 1/4

1/2z = 37/4

z = 74/4 (Multiplied on both sides by 2 to get of the 1/2)

z = 18 1/2

Complete the missing parts of the table for the following function.
y=(1/6)^x

Answers

36,6,36

and btw what episode u on on naruto yah weeb

Cheap and fast gas station is conducting a consumer satisfaction survey. Which method of collecting data would most likely lead to a biased sample? Interviewing every 5th customer to come into the station

Answers

What is the second option you only gave us one option?

Please help. How can this set be expressed using inequalities?

Answers

Answer:

Its the first one

Step-by-step explanation:

10 and x is Greater than -2

-2 is greater or less than x is greater or less than 10

The arithmetic mean if ui = xi - 25 / 10 sigma fiui = 20 and sigma fi = 100 is

Answers

Answer:

27

Step-by-step explanation:

Given the formula ui = xi - 25 / 10

Note that the general formula for calculating ui = xi-A/n where;

A = assumed mean

n = class size

On comparison with the given equation, A = 25 and h = 10

Also arithmetic mean  x = A + {h * sigma(fiui) /sigma(fi)} where;

sigma(fiui) = 20 and  sigma fi = 100

Substituting the given value to get the mean x;

x = 25+ (10*20/100)

x = 25 + (200/100)

x = 25 + 2

x = 27

The arithmetic mean is 27

Share £747 in the ratio 2:7 between Tom and Ben.
Tom will get
£
Ben will get
£

Answers

[tex]tom \: will \: get \:£166 \\ ben \: will \: get \: £581\\ solution \\ let \: the \: ratios \: be \: 2x \: and \: 7x \\ 2x + 7x = 747 \\ or \: 9x = 747 \\ or \: x = \frac{747}{9} \\ x = £83 \\ replacing \: value \\ 2x \\ = 2 \times 83 \\ = 166 \\ 7x \\ = 7 \times 83 \\ = 581 \\ hope \: it \: helps[/tex]

Answer:

Tom=£166

Ben=£581

Step-by-step explanation:

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Find the constant k for this element for t hours, then use y=ne^-kt to write the equation for modeling its exponential decay- please help me If someone could help me thank you its geometry :( DEllAC AD=BE AB=16 BC=24 BE-? BD-? there is no difference between listening and speaking. true false I have finished the table but stuck in the question after... a 680g patient comes in with diarrhea. the doctor orders anti-diarrhea medication at a dosage of 15 mcg/kg TID x 3 days. rhye medication concentration 50mcg/ml. What is the patients dose in MCG? What is the total volume of medication you will send home? What is the area of this isoceles trapezoid? Epiphany Industries is considering a new capital budgeting project that will last for three years. Epiphany plans on using a cost of capital of 12% to evaluate this project. Based on extensive research, it has prepared the following incremental cash flow projects:Year 0 1 2 3Sales (Revenues) 100,000 100,000 100,000- Cost of Goods Sold (50% of Sales) 50,000 50,000 50,000- Depreciation 30,000 30,000 30,000= EBIT 20,000 20,000 20,000- Taxes (35%) 7000 7000 7000= unlevered net income 13,000 13,000 13,000+ Depreciation 30,000 30,000 30,000- capital expenditures -90,0001. The free cash flow for the first year of Epiphany's project is closest to:________A. $43,000B. $25,000C. $13,000D. $45,0002. The NPV for Epiphany's Project is closest to:_______A. $4,800B. $39,000C. $13,300D. $20,400 NEED FOR TODAY, HELP PLS 78 POINTS2. The Roman Catholic Church encouraged people to think of life after death. The Renaissance changed this mentality because *a) It supported the Islamic beliefs of the Five Pillars.b) The Catholic Church was no longer relevant in individual life.c) People began to see value in daily life- the arts, architecture, and new ideas3. As the Renaissance began in Italy, a philosophy called humanism developed. Humanism is *a) The belief that there is worth and potential in all individuals.b) The belief that people survive based on nature.c) The role of God in society.4. The Renaissance began in __________ in the _____________: *a) France/ 1400sb) Italy/1300sc) England/1200s5. Classical artists (500 B.C.E. to 500 C.E) created sculptures, pottery, murals and mosaics. There purpose was to show the importance of *a) Ordinary peopleb) Civic leadersc) Gods and goddessesd) All of the Above6. The Medieval Art period (500 to 1300C.E.) created stained glass windows, sculptures, paintings, and tapestries. The purpose of much medieval art was to *a) Show the importance of humanity in daily lifeb) Teach religion to people who could not read or writec) Connect ancient Greek and Roman figures to medieval times7. The Renaissance Art period (1300s to early 1600s) created sculptures, murals, paintings, and drawings. 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Prepare the journal entry to record Tanner-UNFs investment in the bonds on July 1, 2016. 2. Prepare the journal entry by Tanner-UNF to record interest on December 31, 2016, at the effective (market) rate. 3. At what amount will Tanner-UNF report its investment in the December 31, 2016, balance sheet? Why? 4. Suppose Moodys bond rating agency downgraded the risk rating of the bonds motivating Tanner-UNF to sell the investment on January 2, 2017, for $190 million. Prepare the journal entry to record the sale. Which is an example of federal supremacy? Congress does not have the power to create federal banks. The Supreme Court can decide whether a law or act is constitutional. Congress has powers that are not specifically outlined in the Constitution. A state is not allowed to tax federal money because federal law is superior. A doctor has told Frida she must engage in physical activities to improve her heart health and minimize the chance of injury. 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