Solve 9x^2- 17x- 85 = 0 Give your solutions correct to 3 significant figures.​

Answers

Answer 1

Answer:

[tex]x =\frac{17}{18} +\frac{1}{18} \sqrt{3349}[/tex] OR [tex]x =\frac{17}{18} +\frac{-1}{18} \sqrt{3349}[/tex]

Step-by-step explanation:

9x2−17x−85=0

For this equation: a=9, b=-17, c=-85

9x2+−17x+−85=0

Step 1: Use quadratic formula with a=9, b=-17, c=-85.

[tex]x =\frac{-b + \sqrt{b^{2}-4ac } }{2a}[/tex]

[tex]x =\frac{-(-17)+\sqrt{(-17)^{2} -4(9)(-85)} }{2(9)}[/tex]

[tex]x =\frac{17}{18} +\frac{-1}{18} \sqrt{3349}[/tex]


Related Questions

MAX POINTS help me

The amplitude of this graph is 3 the maximum is 4 the minimum is -2 the period is 4 and the midline is 1 how would the function be written?

Answers

[tex]\qquad\qquad\huge\underline{{\sf Answer}}♨[/tex]

The required equation is :

[tex]\qquad \sf  \dashrightarrow \:a \sin(bx) + c[/tex]

Now, let's find the required values :

period (p) = 4

[distance between any successive Crest or trough]

a = - 3 (flipped)

b = 2π/p = 2π/4 = π/2

k = 1

Distance of starting position from origin = k

Now, plug in the values ~

[tex]\qquad \sf  \dashrightarrow \: - 3 \sin( \frac{ \pi}{2}x ) + 1[/tex]

General equation:-

Asin(bx)+c

So

Amplitude=A=-3

Min=-2 ,max=4

Hence

b=|(mn)|π/mxb=|-2|π/4b=2π/4b=π/2

midline =c=1

So plugin the values

y=-3sin(π/2x)+1

Builtrite bonds have the following: 5 1/2% coupon, 10 years until maturity, $1000 par and are currently selling at $1044. If you purchase this bond, what would be your AYTM?

Answers

The annual yield to maturity (AYTM) of the Builtrite bonds is at 5.5% for 10 years with a $1,000 par value and the current price of $1,044 is A. 4.9%.

What is the annual yield to maturity (AYTM)?

The annual yield to maturity (AYTM) is the total return expected from a bond if the bond is held till maturity.

The AYTM rate is the rate at which all future expected cash flows are discounted to find out the current value or the price of the bond.

We can use the following Yield to Maturity formula to calculate the AYTM.

Yield to Maturity = [Annual Interest + {(FV-Price)/Maturity}] / [(FV+Price)/2]

Data and Calculations:

Annual Interest = Annual Interest Payout by the Bond = $55 ($1,000 x 5.5%)

FV = Face Value of the Bond = $1,000

Price = Current Market Price of the Bond = $1,044

Maturity = Time to Maturity = 10 years

= {$55 + ($1,000 - $1,044)/10} / {($1,000 + $1,044)/2}

= $55 + -4.4 / 1,022

= 50.6/1,022

= 4.95%

We can also use an online finance calculator to check the calculated value above as follows:

N (# of periods) = 10

I/Y (Interest per year) = 4.95%

PMT (Periodic Payment) = $55 ($1,000 x 5.5%)

FV (Future Value) = $1,000

Results:

PV = $1,044

Sum of all periodic payments = $550 ($55 x 10)

Total Interest $503.44

Answer Options:

A. 4.9%

B. 5.1%

C. 5.3%

D. 5.5%

Thus, the annual yield to maturity (AYTM) of the Builtrite bonds is at 5.5% for 10 years with a $1,000 par value and the current price of $1,044 is A. 4.9%.

Learn more about the yield to maturity at https://brainly.com/question/26657407

Find the distance between the two points in simplest radical form
(6,-4) and (1,-6)

Answers

Answer
[tex]\sqrt29[/tex]

Step-by-step explanation:

1. Write the distance formula:

[tex]\sqrt(x_{2}-x_{1})^{2} + (y_{2}-y_{1})^{2}[/tex]

2. Substitute

Substitue (6, -4) and (1, -6) into

[tex]\sqrt(x_{2}-x_{1})^{2} + (y_{2}-y_{1})^{2}[/tex]

[tex]\sqrt(1 - 6) ^{2} + (-6 + 4)^{2}[/tex]

3. Calculate

[tex]\sqrt(1 - 6) ^{2} + (-6 + 4)^{2}[/tex]

[tex]\sqrt(-5) ^{2} + (-2)^{2}[/tex]

[tex]\sqrt5 ^{2} + 2^{2}[/tex]

[tex]\sqrt25 + 4[/tex]

[tex]\sqrt29[/tex]

Lainey is sliding down a water slide that is 423 feet long at a rate of 47 feet per second. How long will it take Lainey to travel from the top to the bottom of the slide?

Answers

Answer:

It will take Lainey 9 seconds to travel from top to bottom

Further explanation:

The formula of speed will be used to calculate the time to reach from top to bottom of the slide.

Given

\begin{gathered}Distance=d=423\ feet\\Speed=s=47\ feet\ per\ second\end{gathered}

Distance=d=423 feet

Speed=s=47 feet per second

The formula for speed is:

s=\frac{d}{t}s=

t

d

Putting the values of distance and speed in the formula:

\begin{gathered}47=\frac{423}{t}\\t=\frac{423}{47}\\t=9\ seconds\end{gathered}

47=

t

423

t=

47

423

t=9 seconds

It will take Lainey 9 seconds to travel from top to bottom

Keywords: Speed, distance

Learn more about speed

[tex]\begin{equation}\text { Question: If } \int_{\frac{-1}{\sqrt{2}}}^{\frac{1}{\sqrt{2}}}\left(\left(\frac{x-1}{x+1}\right)^{2}+\left(\frac{x+1}{x-1}\right)^{2}-2\right)^{\frac{1}{2}} d x\end{equation}[/tex]
Options:
(a) ln16
(b) 2ln16
(c) 3ln16
(d) 4ln16

Answers

We want to evaluate

[tex]\displaystyle \int_{-\frac1{\sqrt2}}^{\frac1{\sqrt2}} \sqrt{\left(\frac{x-1}{x+1}\right)^2 + \left(\frac{x+1}{x-1}\right)^2 - 2} \, dx[/tex]

First we note that the integrand is even (replacing x with -x doesn't fundamentally alter the function being integrated), so this is equal to

[tex]\displaystyle 2 \int_0^{\frac1{\sqrt2}} \sqrt{\left(\frac{x-1}{x+1}\right)^2 + \left(\frac{x+1}{x-1}\right)^2 - 2} \, dx[/tex]

The radicand reduces significantly to

[tex]\displaystyle \left(\frac{x-1}{x+1}\right)^2 + \left(\frac{x+1}{x-1}\right)^2 - 2 = \frac{16x^2}{(1-x^2)^2}[/tex]

so that taking the square root, we simplify the integral to

[tex]\displaystyle 8 \int_0^{\frac1{\sqrt2}} \frac x{1-x^2} \, dx[/tex]

which is trivially computed with a substitution of [tex]y = 1 - x^2[/tex] and [tex]dy=-2x\,dx[/tex]:

[tex]\displaystyle -4 \int_1^{\frac12} \frac{dy}y = 4 \int_{\frac12}^1 \frac{dy}y = -4 \ln\left(\frac12\right) = \ln(2^4) = \boxed{\ln(16)}[/tex]

Is there a relationship between the distance and the sum? Is there a relationship between the distance and the difference? A 5-column table with 3 rows. Column 1 is labeled a with entries 1, 4, negative 6. Column 2 is labeled b with entries 2, negative 1, negative 3. Column 3 is labeled a + b with entries 3, 3, negative 9. Column 4 is labeled a minus b with entries negative 1, 5, negative 3. Column 5 is labeled Distance with entries 1 unit, 5 units, 3 units. Which describes the relationship between the distance and the difference? The distance is always the opposite of the difference. The distance is exactly the difference. The distance is the absolute value of the difference. The distance is not related to difference.

Answers

Answer:

C) The distance is the absolute value of the difference

Step-by-step explanation:

We are interested in the last two columns.

If we compare them we see that each value of the distance column is the absolute value of corresponding value of difference:

a - b        = 1, 5, - 3distance  = 1, 5, 3

Corect choice is C

Answer:

The distance is the absolute value of the difference.

Step-by-step explanation:

Given table:

[tex]\begin{array}{|c|c|c|c|c|}\cline{1-5} a & b & a+b & a-b & \sf distance\\\cline{1-5} 1 & 2 & 3 & -1 & 1 \sf \: unit\\\cline{1-5} 4 & -1 & 3 & 5 & 5 \sf \: units\\\cline{1-5} -6 & -3 & -9 & -3 & 3 \sf \: units\\\cline{1-5}\end{array}[/tex]

The difference is column 4.

The distance is column 5.

The absolute value of a number is its positive numerical value.  It is denoted by a vertical line either side of the real number.

For example, |5| means 'the absolute value of 5', and |-5| means 'the absolute value of -5'.

Taking the absolute values of the differences:

⇒ |-1| = 1

⇒ |5| = 5

⇒ |-3| = 3

Therefore, the distance is the absolute value of the difference.

X+10 please help
I really need help with inequality’s I will give 100 points for this answer no bull

Answers

Answer:

x+10=-3x+38

Step-by-step explanation:

subtract 10 from both sides Subtract the numbers then add 3x on both sides

Use a fraction or mixed number to represent the time on a number line. Let 0 represent noon.

8:30 A.M.

Answers

The time 8:30AM is 3 and half hours before noon.

The fraction that represents 8:30AM is -3 1/2

How to represent the time as fraction?

The time is given as:

Time = 8:30 A.M

Given that Noon is represented by 0.

It means that time before noon would be represented with negative value

8:30AM is 3 and half hours before noon.

So, we have:

8:30AM = -3 1/2

Hence, the fraction that represents 8:30AM is -3 1/2

Read more about fractions at:

https://brainly.com/question/1622425

Been struggling with math lately. I would appreciate it if anyone out there can help me out!

Answers

Answer:

  21°

Step-by-step explanation:

Dilation is a similarity transformation. It does not change angles. It changes lengths proportionally.

∠A'B'C' ≅ ∠ABC = 21°

Which fraction represents the decimal 0.8888...?
StartFraction 80 Over 99 EndFraction
StartFraction 1,111 Over 1,250 EndFraction
Eight-ninths
Nine-eighths

Answers

Answer:

1111/1250

Step-by-step explanation:

Hey there!

To find what fraction represents the decimal shown, you can take each answer choice, and divide the two numbers

We can do this because a fraction is a simple way of dividing two rational numbers

Our answer is 1111/1250

In order to check if this is correct, we can just divide 1111 and 1250

When you divide this, you get 0.8888...

So the fraction that represents 0.888... is 1111/1250

A fraction that represents the decimal 0.8888 is: 1111/1250

What is fraction?

In Mathematics, fractions are represented as a numerical value, can be defined as the parts of a whole. A fraction can be a portion or section of any quantity out of a whole, where, the whole can be any number, a specific value, or a thing.

Given is decimal number 0.8888... we need to convert it into a fraction,

Since the number has 4 decimal places, then the first thing to do is multiply and divide the number by 10000.

We have then:

0.8888* (10000/10000) = 8888/10000

Simplifying we have:

8888/10000 = 4444/5000

4444/5000 = 2222/2500

2222/2500 = 1111/1250

Hence, the fraction that represents the decimal 0.8888 is: 1111/1250

Learn more about fraction, click;

https://brainly.com/question/10354322

#SPJ7

Jeremiah is starting a t-shirt making business. He needs to spend $1050 to buy the equipment to print on t-shirts. On each t-shirt he sells, he makes a $4 profit. How many t-shirts must Jeremiah sell to break even?

Answers

He would have to sell at least 159 t shirt

(2x > 10) list some values for x that would make this inequality true

Answers

Answer:

6,7,8,9

Step-by-step explanation:

> means Greater than

< means Less than

Thus,

Any number that greater than 10 would make this inequality true..

Some possible values for x can be:

6,7,8,9,11,12,13,14,15,16,17,18 and so on

[RevyBreeze]

Adam deposited $50,000 in a savings account with simple interest. Three years later, he had earned $6,000 in interest. What was the interest rate

Answers

hello! if adam made 6000 dollars from interest in 3 years, then assuming the rate was linear, he would have gotten 2000 dollars of interest per year. 2000 is 1/25 of 50000, so the interest rate is 1/25 per year, or 4%.

Help picture below problem 19

Answers

Answer:

it's rectangle...

Step-by-step explanation:

mark me brainliest

Answer:

that's C. Its' a rectangle

It has 2 pairs of parallel sides. and they are the same size.

can someone please help me with this question???? its an exam study guide and i dont understand it

Josef owns four par value $1,000 bonds from Dowc Beverage Co. Each bond has a market value of 104.561 and gives 9.2% interest. Josef also owns 170 shares of stock in Dowc Beverage Co. Stock in Dowc Beverage Co. has a share price of 26.25 and pays a dividend of $2.38. If the broker Josef employed to purchase these stocks and bonds charges a commission of $72 for each ten shares of stock bought or sold and a commission of 4% of the market value of each bond bought or sold, which aspect of Josef’s investment in Dowc Beverage Co. has a greater percent yield, and how much greater is it?
a.
The stocks have a yield 2.15 percentage points higher than that of the bonds.
b.
The stocks have a yield 0.27 percentage points higher than that of the bonds.
c.
The bonds have a yield 1.35 percentage points higher than that of the stocks.
d.
The bonds have a yield 2.08 percentage points higher than that of the stocks.

Answers

Answer:

If the broker Josef employed to purchase these stocks and bonds charges a commission of $72 for each ten shares of stock bought or sold and a commission of 4% of the market value of each bond bought or sold, then the bonds have a yield 1.35 percentage points higher than that of the stocks.

Step-by-step explanation:

Find the area of the parallelogram. of 6 m 10 m

Answers

Answer:

60m

Step-by-step explanation:

The formula for the area of a parallelogram is base x height.

b x h

6m x 10m = 60m

pls help me on this i dont get it i wasnt trached this aswell

Answers

Answer:

answer below.

Step-by-step explanation:

1.  1/5----0.2

2. 1/3---0.3 repeating

3.  1/2---0.5

4.  7/10---0.7

5. 3/4---0.75

what is the solution to the system of equations graph below

Answers

[tex]\large\pink{\mid{\underline{\overline{\tt { →\: (-5,1)}\mid}}}}[/tex]

Option ( A ) → (-5,1)Intersecting lines→ When two lines share exactly one common pointcuz here,the pôint where two lines meet is (-5,1) hence this is the solution of above graph.x = -5 , y = 1_______________☃️

[tex]\sf{\:мѕнαcкεя\: ♪...}[/tex]

!! 100 PTS+BRAINLIEST 4 CORRECT ANSWER+EXPLANATION!!
use the photo provided
thanks

Answers

Answer:

19.0 cm (3 sf)

Step-by-step explanation:

Formula

[tex]\sf arc \ length=2\pi r \left(\dfrac{\theta}{360}}\right)[/tex]

(where r is the radius)

Arc length of white sector

Radius of white sector = 8 - 4.5 = 3.5 cm

[tex]\sf \implies arc \ length=2\pi \cdot 3.5 \left(\dfrac{50}{360}}\right)=\dfrac{35}{36} \pi \ cm[/tex]

Arc length of grey sector

Radius = 8 cm

[tex]\sf \implies arc \ length=2\pi \cdot 8 \left(\dfrac{50}{360}}\right)=\dfrac{20}{9} \pi \ cm[/tex]

Perimeter of shaded part

Perimeter = arc length (white) + arc length (grey) + 2 x 4.5

                [tex]\sf =\dfrac{35}{36} \pi + \dfrac{20}{9} \pi +9[/tex]

                [tex]\sf =19.0356432...[/tex]

                [tex]\sf =19.0 \ cm \ (3 \ sf)[/tex]

i don't understand the calculation of learning rate , how it came 75%

Answers

Answer:

Increase the learning rate after each mini-batch by multiplying it by a small constant.

Future value of 10% savings from earnings of1470 earning 3.5% annual interest compounded monthly for 25 years

Answers

hmmm so let's see first how much is 10% of the earnings of 1470.

[tex]\begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{10\% of 1470}}{\left( \cfrac{10}{100} \right)1470}\implies 147[/tex]

so then

[tex]~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$147\\ r=rate\to 3.5\%\to \frac{3.5}{100}\dotfill &0.035\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{monthly, thus twelve} \end{array}\dotfill &12\\ t=years\dotfill &25 \end{cases}[/tex]

[tex]A=147\left(1+\frac{0.035}{12}\right)^{12\cdot 25}\implies A=147\left( \frac{2407}{2400} \right)^{300}\implies \boxed{A\approx 352.19}[/tex]

What is 5389 rounded off to the nearest 100?

Answers

Answer:

5400

Step-by-step explanation:

the 89 is higher then 5 so it would round the 3 up to a 4

Answer:

5389 rounded to the nearest 100 is 5400

Step-by-step explanation:

we round the number up to the nearest 100 if the last 2 digits  of the number are 50 an d over we round the number down to the nearest 100 if the last 2 digets are 49 and below

how many 250 g of sugarcane can be obtained from 3.25 kg​

Answers

3,250g divided by 250g

=13

Jed rode his scooter to school at 20 miles per hour and then jogged back at 8 miles per hour. If the round trip took him 7 hours, how many miles was it to school?

Answers

Answer:

196 Miles

Step-by-step explanation:

Jed Rode=20 miles per hour

jog back 8 miles per hour

28×7 = 196

Answer: 196 miles

Step-by-step explanation: 7(20+8) You have to distribute the 7 to each number(20 & 8). Then add the answers you get from the 7x20 and 7x8.

7x20=140

7x8= 56

56+140=196

Which of the following is the correct factorization of the polynomial below?

x^3 - 12

A. (x + 3)(x - 4)

B. (x - 3)(x + 4)

C. (x + 3)(x^2 - 4x + 4)

D. The polynomial is irreducible.

Answers

The answer is D. The polynomial is irreducible because 12 can’t be squared.

The graph of a function g is shown below.
Find g(1) and find one value of x for which g(x)=-1.

1) g (1) = ?

2) one value of x for which g (x) = -1 ?

Answers

Answer:

this is wrong

is the answer

if you like my answer please like comment and mark me as brilliant

Kevon Webster will bring hamburgers to grill. There are four patties per pound. He buys 28 pounds
How many patties can he make?

Answers

Answer:

112

Step-by-step explanation:

4x28=112

Help. I will give points

Answers

Answer:

arc sr

Step-by-step explanation:

i can't see the options for the question so lol

im gonna say its sr arc

Find the volume of the given figure. Round to the nearest tenth. Enter only the number, the
units have been given.
5.1 in
5.9 in
6 in
3.4 in
Volume =
in

Answers

Answer:

111.3 cubic inches

Step-by-step explanation:

The dimensions of the rectangular prism are 5.9 x 3.4 x 5.1

volume = length x width x height

V = 5.9 x 3.4 x 5.3

V = 102.306

The dimesnsions of the triangular prism are 3.4 x 5.9 x ?

to find the missing length, 6 - 5.1 = 0.9

3.4 x 5.9 x 0.9

Volume = (3.4 x 5.9 x 0.9)/2

V = 18.054/2

V = 9.027

Add the volumes together

102.306 + 9.027 = 111.333

Round

111.3

I need help on this question

Answers

~Denki Kaminari here~

Answer:

5t\sqrt(6su) (THE SECOND ONE)

Step-by-step explanation:

simplify the radical by breaking it up into known factors, assuming positive real numbers.

hope this helps :D

Other Questions
A teacher drops a bottle containing sodium chloride. The bottle breaks when ithits the floor. The teacher sweeps up the mixture of sodium chloride and glass.Describe how the teacher can obtain a pure, dry sample of sodium chloride fromthe mixture. In this activity, you will quote directly from, paraphrase, and summarize the Internet article Cyberbullying: A Technological Nightmare. You will also create a bibliographic entry based on this source.Part AWrite a sentence that includes a direct quotation from the source. 21 POINTS!Joseph wants to buy a tennis racket and some cans of tennis balls.The tennis racket costs $85.Each can of tennis balls costs $2.50.There is no sales tax.Joseph has $125 to spend. Which inequality shows how many cans of tennis balls Joseph can buy, x?A. 2.50x + 85 < 125B. 2.50x + 85 125C. 2.50x + 85 > 125D. 2.50x + 85 125 +3=17x+3y=17+2=8x+2y=8Step 1: Find the LCM to eliminate the x.Step 2: Write the new equation. Step 3: Divide to solve for y. A potential legal claim which is probable and the amount can be reasonably estimated should be: multiple choice recorded in the financial statements as a contingent liability. disclosed in the notes while the lawsuit is outstanding. disclosed in the notes when the lawsuit is settled. is a potential liability that has arisen because of a past event or transaction. Please help! And show how u solve!Find X Lies den Text und setze die fehlenden Wrter richtig ein. hard water contains calcium and magnesium ions. one way to soften water is to add sodium phosphate. Write complete and net ionic equations for the reaction of these two alkaline earth metals with aqueous sodium phosphate HELP ASAP 100 POINTS PLS AND ILL GIVE BRANLIEST PLS HELP Use the graph to answer the question.On a coordinate plane, a circle has center (4, negative 1) and radius of 5.Which equation describes the circle?(x 4)2 + (y + 1)2 = 25(x 4)2 + (y + 1)2 = 5(x + 4)2 + (y 1)2 = 25(x + 4)2 + (y 1)2 = 5Answer: A 3 informations needed for an application or interview to become a singer GIVING BRAINLIEST!! need this rlly soon thank you so much! The use of ________ to treat drinking water, which began in 1913, reduces the incidence of waterborne diseases. So can someone explain how the heck does 4 x 4 x 4 = 64?? Cause I keep on getting 12 so like wth?? 5. Not all evidence is easily identified as evidence. Can someone help me on this question The Port Huron Statement was to the Students for a Democratic Society what the _____________ was to the Young Americans for Freedom. PLS HELP IVE BEEN STUCK ON THIS FOR 2 DAYS AND I HAVE TO TURN IT IN SOON!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Part A: A dichotomous key works on the principle of asking yes-or-no questions about the organism. To identify it, the answers for that organism are then compared to existing organisms to identify it. Prepare a list of four to five questions about each of the organisms listed below to help you create your own key. For each question, make sure the answer isnt the same for all four organisms. For example, Does the organism have cells? would be an inappropriate question, because all the organisms have cells.Part B: Information about the four organisms can be found on the Internet. Use credible websites to find answers to the questions you developed in part A. Based on this data, draw your own dichotomous key.Shapes please help asap tysm The sum of two numbers is 3. Their difference is 13. Find the numbers.