Use the quadratic formula to solve for x.
3x2-x-8=0.

Answers

Answer 1
6 - x - 8 = 0

-x - 2 = 0

-x = 2

x = -2

Related Questions

Write a verbal reprsentation that could be translated to the equation 7k + 8 = 100.

Answers

Answer:

Eight more than seven times x (or x times seven) is one hundred

Answer: "The product of 7 and k plus 8 yields 100"

Step-by-step explanation: Simply translate the numbers and signs into words. "the product of 7 and k" means multiply 7 times k, which is the same as 7k. "plus 8" means addition. "yield" is the same as equal.

I need help with this pls ASAP

Answers

K is the right answer for the problem!

Find the missing value of 2/5=?/15

Answers

Answer:

2/5=6/15

Step-by-step explanation:

2/5

Multiply with 3 both numerator and denominator

=>2x3/5x3

=>6/15

Answer:

x = 6

Step-by-step explanation:

2/5 = x/15

x = 2×15/5

x = 30/5

x = 6

{6} E { {6}, {14} } true or false

Answers

Answer: true and stop deleting my answers im right im in collage

and I dont need to explain again when i already did so STOP and trust me

                                      A SNACK THAT SMILES BACK®

The perimeter of the original rectangle is 16 feet. A small rectangle has a length of 6.2 feet and width of 1.8 feet. A larger rectangle has a length of 12.4 feet and width of blank. Not drawn to scale What is the perimeter of the enlarged rectangle? Round to the nearest tenth if necessary.

Answers

Answer:

  32 ft

Step-by-step explanation:

The length of the larger rectangle is double that of the smaller one. If we assume the rectangles are similar, the perimeter will be double as well:

  2·(16 ft) = 32 feet . . . . perimeter of larger rectangle

__

The width of the larger one is 2·1.8 ft = 3.6 ft.

Answer:

C) 32 feet

Step-by-step explanation:

\(゚ー゚\)

Twice a number is at most 36.​

Answers

Answer:

18?

Step-by-step explanation:

Give two points with integer coordinates that have a slope of 2/5 between them.

Answers

Answer:

yes

Given a 2D line e.g. (3,10) -> (8.3,16.5), how can I find any point on that line that has has whole-number coordinates?

I can easily iteratively walk along one of the axis in integer steps, seeing if the value on the other axis is integer, but this is slow for very very long lines.

What is the value of the expression when y = 2? StartFraction 2 minus y Over 4 plus y EndFraction plus StartFraction 3 (y plus 2) Over y EndFraction

Answers

Answer:

12

Step-by-step explanation:

Answer:

2.4

Step-by-step explanation:

4(6c+5) - 2(3c - 5) = 120

Answers

Answer:

[tex]c=5[/tex]

Step-by-step explanation:

[tex]4(6c+5)-2(3c-5)=120[/tex]

Use the distributive property to expand the equation:

[tex]4(6c)+4(5)-2(3c)-2(-5)=120\\\\24c+20-6c+10=120[/tex]

Combine like terms to simplify the equation:

[tex]24c-6c+20+10=120\\\\18c+30=120[/tex]

Subtract 30 from both sides:

[tex]18c+30-30=120-30\\\\18c=90[/tex]

Isolate the variable c. Divide both sides by 18:

[tex]\frac{18c}{18}=\frac{90}{18}\\\\ c=5[/tex]

So, c is equal to 5.

:Done

There are 87 first graders in after care.after 39 students are picked up, the teacher put the remaining students into 4 groups for an activity. How many students are in a group?

Answers

Answer:

There are 12 students in each group

Step-by-step explanation:

87-39= 48

48/4= 12

Hope this helped. ;)

Answer:

12 students are in a group

Step-by-step explanation:

There are 87 first graders, but 39 students are picked up. So, we have to calculate how many students are left.

87 - 39 = 48

There are 48 students left.

The teacher divided these 48 students intro 4 groups.

48 / 4 = 12

So, there are 12 students in a group.

Hope this helps ^^

Write the equation of the line graphed below.

Answers

Answer:

y=2x +3

Step-by-step explanation:

The slope hits the points (-1,2) and (0,2). If you count how many units are right and up, then that's your slope. In this case, the distance between those two points are 1 right and 2 up which is the same thing as 2. The y-intercept is 3 since the slope crosses the y-axis there.

which equation can be represented by the number line

Answers

Answer:

B

Step-by-step explanation:

The arrow is going left four units. Since it's going left, we know that we are adding a negative number and since it's going left 4 units, we know that we are adding -4 in our equation. This narrows it down to options B and D. However, the arrow usually represents the second number being added, hence, the answer is B.

A race car driver completes 30 laps and 15 minutes at a constant speed. What is the drivers speed?

Answers

Answer:

60 mph

Step-by-step explanation:

It takes two minutes to drive one mile at  30  mph. You are planning on covering two total miles. If your average speed is  60 mph, it would take two minutes to cover these two miles. So you have to go 60 mph.

Hope This Helps :)

The driver's speed is 30 miles per hour.

One mile is approximately 4 laps so 30 laps would be:

= 30 / 4

= 7.5 miles

The driver drove 7.5 miles in 15 minutes.

15 minutes in hours is:

= 15 / 60

= 0.25 hours

The speed of the driver is therefore:

= 7.5 miles / 0.25 hours

= 30 mph

The driver was therefore driving at a speed of 30 mph

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HELP PLEASE!!!

The following graph shows farm sector production in billions of dollars from 1994–2003. One line shows the yearly production and the other shows the average over the time span. According to the graph, in which 3 years were the values of farm sector production closest to the average for the 10 years shown?

A): 1994, 1996, 1998
B): 1996, 1998, 2000
C): 1998, 2000, 2002
D): 2000, 2002, 2004

Answers

Answer:

C): 1998, 2000, 2002

Explanation:

You can find the answer by looking at which part of the line graph intersects the line where it says 1994-2003 average. As you can see, the years 1998, 2000, and 2002 are meeting up with the average of 1994-2003.

Answer: C) 1998, 2000, 2002 !!

Step-by-step explanation:

The graph shows Demarco's changing distance as he ran during his workout. What does point A tell you about Demarco's speed?​

Answers

Answer:

Demarco ran 2 miles in 24 minutes

Answer:

Demarco ran 2 miles in 24 minutes.

thats how it is in ttm

Sofia invests her money in an account paying 7% interest compounded semiannually. What is the effective annual yield on this account? Enter your response as a percentage rounded to two decimal places and omit the percentage sign

Answers

Answer:

7.12

Step-by-step explanation:

The formula for the effective annual yield is given as:

i = ( 1 + r/m)^m - 1

Where

i = Effective Annual yield

r = interest rate = 7% = 0.07

m= compounding frequency = semi annually = 2

i = ( 1 + 0.07/2)² - 1

i = (1 + 0.035)² - 1

= 1.035² - 1

= 1.071225 - 1

= 0.071225

Converting to percentage

0.071225 × 100

= 7.1225%

Approximately to 2 decimal places = 7.12

Therefore, the annual effective yield = 7.12

Felix signs up for a cell phone that his parents require him to pay for. His bill is $46.80. What impact will his cell phone have on his savings account over the period of a year ​

Answers

Answer:$561.60

Step-by-step explanation: The cost of each month is 46.80 and there is 12 months in a year so 46.80×12=561.60

For his cell phone , Felix will pay a bill of $561.60 in a year .

Felix has a bill of $46.80 per month which is paid by his parents.

We have to find out that what will be the impact on his savings account over the period of a year.

What is the cost of 10 pens , if one pen costs $10 ?

The cost of 10 pens will be 10 × 10 = $ 100.

As per the question ;

Felix is paying a bill of $ 46.80 in a month.

1 year = 12 months

So,

Felix will pay a bill in a year or 12 months is of ;

= 12 × $ 46.80

= $ 561.60

Thus , for his cell phone , Felix will pay a bill of $561.60 in a year .

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HELP PLEASE! ON A TIME LIMIT.

Javi and MeriAnne competed to see who could read the most pages of their novels in a week.
According to the bar graph, how many more pages did the winner of the contest read than the loser? Show your work or explain how you got your answer.

Answers

Answer:

5

Step-by-step explanation:

First add the sum of the Javi's total page count from Monday to Friday. You get 125 pages. Next find MeriAnne using the same process. You get 120 pages. Find the difference by subtracting one from the other. 125-120=5 page difference.

Javi wins from MeriAnne by 5 pages

What is data?

Data is information that has been translated into a form that is efficient for movement or processing. Relative to today's computers and transmission media, data is information converted into binary digital form. It is acceptable for data to be used as a singular subject or a plural subject.

Total number of pages read by Javi

=10+20+60+20+15

=125

Total number of pages read by MeriAnne

=20+30+40+20+10

=120

So, Javi wins from MeriAnne by= 125-120= 5 pages

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3. Determine if the equation represents y as a function of x.
9x + 3y = 12

Answers

The answers in the picture download photomath scam your problem and gives u answer

Select the relationship that does represent a function.

Answers

Answer:

Picture number 3 is the answer

Step-by-step explanation:

A function is a relation in which each element in the domain is paired with exactly one element in the range not 2.

Picture number one has a range left with no domain so it's not a function

Picture number 2 is showing an element in the domain which paired 2 elements in the range so it's not a function

Picture 3 is correct because each element in the domain macthes one element in the range.

Picture 4 is wrong because it's showing elements in the domain that matches 2 elements in the range. Hope it makes sense.

The required relationship that represents a function is given by 3rd image. Option C is correct.

What are functions?

Functions is the relationship between sets of values. e g y=f(x), for every value of x there is its exists in a set of y. x is the independent variable while Y is the dependent variable.

The first image has a range with no domain, hence it is not a function. In 2nd image depicts an element in the domain that paired two elements in the range, indicating that it is not a function. In 3rd image, it is valid because each element in the domain corresponds to one element in the range. In picture 4, it is incorrect since it depicts domain components that match two range elements.

Thus, the required relationship that represents a function is given by 3rd image. Option C is correct.

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Express the given quantity in terms of the indicated variable.
The area (in ft) of a rectangle that is eight times as long as it is wide;
w = width of the rectangle (in ft)
ft2
X
Need Help?
Read it
Watch It
Master it

Answers

Answer:

X = 8W²

Step-by-step explanation:

Area of a rectangle is expressed as Length * Width

X = L*W where X is the area of the rectangle in fe²

If the triangle is eight times as long as it is wide, then L = 8W

Substitute L = 8W into the formula for calculating the area of a triangle, we will have;

X = L*W

X = (8W)*W

X = 8W²

The expression X in terms of W is therefore X = 8W²

A report on Americans' attitudes toward teachers' pay found that 82% of the respondents to the survey upon which the report is based think that teachers don't make enough money. Which factor is most relevant when evaluating this report? A. 49% of the respondents were women. B. 78% of the respondents were married. C. 51% of the respondents were men. D. 62% of the respondents were educators.

Answers

Answer:

I think the answer is A. 49% of the respondents were women

RoBoCo Costume Inc plans to launch a major campaign to sell Robby the Robot costumes for Halloween. The price-demand equation for Robby costumes is
x = 160 - p
The demand x is the number of Robby costumes in thousands) that can be sold at a price p dollars.
a. How many costumes can be sold at a price of $140?
b. What price should be charged if the demand is 120,000 Robby costumes?
$
c. If the price increases by $1.00, by how much does the demand decrease?

Answers

Answer:

x = 20,000

p = $40

If the price increase by $1, the demand will decrease by 1000

Step-by-step explanation:

Given:

x = 160 - p

x = number of Robby costumes demanded in thousands

p = price in dollars.

a. How many costumes can be sold at a price of $140?

x = 160 - p

x = 160 - 140

= 20

x = 20,000

20 thousand costumes can be sold at a price of $140

b. What price should be charged if the demand is 120,000 Robby costumes?

x is in thousand

p is in dollars

x = 160 - p

x + p = 160

120 + p = 160

p = 160-120

= 40

p = $40

c. If the price increases by $1.00, by how much does the demand decrease?

x = 160 - p

= 160 - 141

= 19

x= 19,000

If the price increase by $1, the demand will decrease by 1000

Consider the following planes. x + y + z = 5, x + 3y + 3z = 5A) Find parametric equations for the line of intersection of the planes. B) Find the angle between the planes.

Answers

Answer:

Step-by-step explanation:

Consider the following planes.  x + y + z = 5, x + 3y + 3z = 5

the parametric equations for the line of intersection of the planes are determined as follows:

From the first plane, the normal of the first plane is [tex]n_1 = (1,1,1)[/tex]

from the second plane, the normal of the second plane is [tex]n_2 = (1,3,3)[/tex]

[tex]n_1 \times n_2 = \begin {vmatrix} \left \begin{array}{ccc}i&j&k\\1&1&1\\1&3&3 \end{array}\right \end {vmatrix}[/tex]

= i(3-3) -j(3-1)+k(3-1)

= i(0) - j(2) + k(2)

= -2j +2k

Suppose z = 0

x+y + 0 = 5  ---(1)

x+3y + 3(0) = 5 (2)

subtracting by elimination

-2y = 0

y = 0/-2

y = 0

The intersection on point of the plane is (5,0,0)

The  equation of plane is r (t) =(5, 0, 0) + t(0, -2, 2)

(x(t), y (t), z(t) ) = (5, -2t, 2t)

B) Find the angle between the planes

The angle between the planes can be represented by the equation:

[tex]cos \theta = \dfrac{a_1a_2+b_1b_2 + c_1c_2}{\sqrt{a^2_1+b_1^2+c_1^2}\sqrt{a_2^2+b_2^2+c_2^2}}[/tex]

[tex]cos \theta = \dfrac{1 \times 1+1\times 3 +1 \times 3}{\sqrt{1^2+1^2+1^2}\sqrt{1^2+3^2+3^2}}[/tex]

[tex]cos \theta = \dfrac{1+ 3 +3}{\sqrt{3}\sqrt{19}}[/tex]

[tex]cos \theta = \dfrac{7}{\sqrt{3}\sqrt{19}}[/tex]

[tex]\mathbf{\theta = cos ^{-1} (\dfrac{7}{\sqrt{57}})}[/tex]

Andre and Morgan are both headed to Florida for vacation. Andre will drive 70 miles per hour. Morgan will drive 55 miles per hour but will leave 3 hours earlier than Andre. How many hours will Morgan have been driving before Andre catches up with her?

Answers

Answer:

14hours

Step-by-step explanation:

Since Andre and Morgan are both heading to the same location i.e Florida, they will have the same distance.

Distance = Speed × Time

For Morgan:

His speed = 55mi/hr

Let his time = x

Distance covered by Morgan = 55x

For Andre

His speed = 70mi/hr

Time = x-3 (since morgan leaves 3 hours earlier than Andre)

Distance covered = 70× (x-3) = 70(x-3)miles

Since they are driving towards the same location;

55x = 70(x-3)

55x = 70x-210

55x-70x = -210

-15x = -210

x = 210/15

x = 14

Hence Morgan will have been driving 14hours before Andre catch up

A square has the following vertices. Find the area of the square.
(-7,-5), (-4,-2), (-1,-5), (-4,-8)
(1 point)
O V18 square units
O 18 square units
O V6 square units
O 6 square units

Answers

Answer:

18 square units

Step-by-step explanation:

Since the shape is a square lets find the distance between two close point then square the distance to find the answer.

Lets take the point (-7,-5), (-4,-2)

Distance= √((y2-y1)²+(x2-x1)²)

Distance= √((-2--5)²+(-4--7)²)

Distance= √((-2+5)²+(-4+7)²)

Distance= √((3)²+(3)²)

Distance= √(9+9)

Distance= √18 units

Area= distance ²

area= √18²

Area= 18 square unit

if AM = 14y - 2 and MB = 10y + 6, find AM.

Answers

Answer:

220

Step-by-step explanation:

Keith sold half of his comic books and then bought nine
more. He now has 20. How many did he begin with?

Answers

Answer:

22 comic books.

Step-by-step explanation:

(20 - 9) * 2 First subtract 9 from 20

11 * 2 Multiply 11 by 2

22 is the product

:
a.
Which of the following statements best describes the difference between sales tax and property tax?
Sales tax is applied to items as they are purchased while property tax is applied to items
already owned
b. Sales tax is applied repeatedly while property tax is paid only once for as long as you own the
item.
Sales tax can be applied to a new speed boat while property tax cannot.
d. Sales tax is strictly meant for food and consumables while property tax is meant for non-food
items
C

Answers

Answer:

Sales tax is applied to item as they are purchased while property tax is applied to items already owned

Step-by-step explanation:

Sales tax is applied to items as they are purchased while property tax is applied to items already owned. Therefore, option A is the correct answer.

What is the sales tax?

Calculating the sales tax applied to a purchase is a matter of simply multiplying the tax rate by the purchase price using the equation sales tax = purchase price × sales tax rate. Adding the sales tax to the original purchase price gives the total price paid with tax.

Property tax is a charge made on real estate that is owned by a person, a business, or another type of legal body. Property tax is most frequently a real estate ad-valorem tax, which is regarded as a regressive tax. It is computed by the local government in the area where the property is situated, and the owner is responsible for paying it.

Sales tax is applied to items as they are purchased while property tax is applied to items already owned. Therefore, option A is the correct answer.

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graph h(t)=-2(t+5)^2+3, find h(-8)

Answers

Answer:

h(-8)=-15

Step-by-step explanation:

Substitute t=-8

h(-8) =-2(-8+5)^2+3

       =-2(-3)^2+3

       =-2(9)+3

       =-18+3

       =-15

Answer:

h(-8) = - 15

Step-by-step explanation:

h(t) = - 2(t + 5)² + 3

replace t with - 8

h(-8) = - 2(- 8 + 5)² + 3

h(-8) = - 2(-3)² + 3

h(-8) = -2×9 + 3

h(-8) = - 18 + 3

h(-8) = - 15

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