Help with question 14!!

Help With Question 14!!

Answers

Answer 1

Answer: a=2 b=5 c=-7

parabola equation is y = 2x^2+5x-7 = 0


Step-by-step explanation:

Substitute (x,y) into y = a x^2 + b x + c

(2,11)      11 = 4a + 2b + c

(-1,-10)  -10 = a - b + c

(-4,5)      5 = 16a -4b + c


Solve the linear system in a, b, c

Det[{{4,2,1},{1,-1,1},{16,-4,1}}] = 54

Det[{{11,2,1},{-10,-1,1},{5,-4,1}}] = 108

Det[{{4,11,1},{1,-10,1},{16,5,1}}] = 270

Det[{{4,2,11},{1,-1,-10},{16,-4,5}}] = -378

a = 108/54 = 2

b = 270/54 = 5

c = -378/54 = -7

parabola equation is y = f(x) = 2x^2+5x-7

f(2) = 8+10-7 = 11 ✔

f(-1) = 2-5-7 = -10 ✔

f(-4) = 32-20-7 = 5 ✔



Help With Question 14!!
Help With Question 14!!

Related Questions

Gina can buy a 5-pound bag of apples that cost $4.50, or she can buy them by the pound for $0.85 or pound. Which of these best explains the least expensive way for Gino buy 5 pounds of apples?
A. Gina should buy the bag of apples for $4.50 because the unit price per pound is less than the by-the-pound price
B. Gina should buy the bag of apples for $4.50 because the unit price per pound is greater than the by-the-pound-price
C. Gina should buy apples by the pound because the unit price per pound for the bag of apples is less than the by-the-pound-price
D. Gina should buy apples by the pound because the unit price per pound for the bag of apples is greater than the by-the-pound price

Answers

it's "D", because when you divide 4.5/5 you get .90 per pound so buying per pound it less.

Find the greatest common factor of these three expressions. 5v2 , 14v4 , and 35

Answers

Question

Find the greatest common factor of these three expressions. 5v2 , 14v4 , and 35


Answer:

1

Step-by-step explanation:

assuming that 5v2 is 5², and 14v4 is 14^4

5² = 25

14^4 = 38416

35 = 35

The factors of 25 are: 1, 5, 25

The factors of 35 are: 1, 5, 7, 35

The factors of 38416 are: 1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 343, 392, 686, 784, 1372, 2401, 2744, 4802, 5488, 9604, 19208, 38416

--------------

the greatest common factor is 1



Question number 1: 5/8 (16b+24) -1/2b

Question number 2: 3/4 (16/64 + 12a) -9a

Answers

Answer:

Problem 1. (19/2)b + 15

Problem 2. 3/16

Step-by-step explanation:

Question number 1

5/8 (16b+24) -1/2b  =

= (5/8) * (16/1) * b + (5/8) * 24 - (1/2)b

= 10b + 15 - (1/2)b

= (20/2)b - (1/2)b + 15

= (19/2)b + 15

Question number 2

3/4 (16/64 + 12a) -9a =

= (3/4) * (16/64) + (3/4) * 12a - 9a

= (3 * 16)(4 * 64) + (3/4) * (12/1) * a - 9a

= (3 * 1)(4 * 4) + (3 * 12)/(4 * 1) * a - 9a

= 3/16 + (3 * 3)/(1 * 1) * a - 9a

= 3/16 + 9a - 9a

= 3/16

ANSWER QUESTION 2 and 3 FOR 25 POINTS AND BRAINLIEST!!

Answers

Answer:

A and C

Step-by-step explanation:

It is certainly not D. She holds no hope for improvement, not really. She is sad that there has not been anything good happening and realistic enough to know that things are going from bad to worse.

C might be possible, but it doesn't really sound like she's blaming anyone, not in that passage.

B There's too much dispair in what  she is saying to believe that a miracle  will happen.

A would be my choice.

Three

Pinnacle means highest,not lowest. Answer C

A steel rod that is 64 feet long must be cut into three pieces to fabricate the supports for a drill press. The longest piece is 3.09 times the shortest and the middle piece is 1.73 times the shortest. How long is each​ piece? Round nearest foot.

Answers

Answer:

let's x be the shortest piece

the middle piece is 1,73 *x

the longest piece is 3,09 x

then if we sum the 3 pieces we will get the steel rod that is 64 feet long

so x+1,73x+3,09x= 5,82x= 64  then x= 10,99 = 11

the shortest piece is 11 feet

the middle piece is 1,73*11=19,03 feet

The longest piece is: 3,09*11= 33,99= 34 feet



rhianna is planning to redecorator her bedroom with paint and new pillows.she has a buget of $200.the cans of paint she wants cost $32 each and thows pillows are $30 each.Which inquality can rhianna use to find out how many cans of paint,x,and pillow,y,she can afford?

Answers

She can get 3 cans of paint and 3 throw pillows because 200 divided by 32 = 6.25 (or six) 200 divided by 30 = 6.6 (six) so cut them in half and she can get 3 throw pillows and 3 paint cans

Step-by-step explanation Eeė

Which statement can be concluded using the true statements? If a quadrilateral has 4 equal sides and 4 equal angles, then it is a square. If a figure is a square, then each of its angles must measure 90 degrees

Answers

yes because if you take me one side of the square off it will be some kind of angle it haven't come to my head jack but it will come to my head by the time I get to the end of the paragraph or at the end of the paragraph so like I was saying if you took one side of the square off you'll be 90 degrees like if you like let that you don't sleep in since you have a salad and you wanted to cut it up like / like that that will be a slash Square that would equal to 90° so the 90° angle that I am talking about is a right angle so as you see I'm talking about 9 degree it right angle is 90° if I'm not right I know I'm right because my teacher told me this and everything so yeah I'm pretty sure my answers right because I had a test on this I got a 80% that is a b good grade right

Answer:

A. If a quadrilateral has 4 equal sides and 4 equal angles, then each of its angles must measure 90 degrees.

Step-by-step explanation:

Given: m || n , <1 is congruent to <3
Prove: p || q

Answers

I would need see what your choices are to give exact answers, but I think the main idea here is to see that angles 1 and 3 are the same, and since the alternate interior angle theorem states parallel lines through a line, or another set of parallel lines, form equal angles on those positions, the lines that form those angles, p and q, must be parallel.

Answer:

A= Angle 1 congruent to angle 2

B= Transitive Property

C= Converse Corresponding angles theorem

Step-by-step explanation:

Your brother is going to buy a car when he graduates, but he doesn't have enough money to pay for it in cash. He takes a loan out at a bank that charges 4% simple interest. If the initial cost of the car is $18,500 and he takes out a 5-year loan, what is the total amount your brother will be paying for the cost of his car?

Answers

Year 1 - 18500 x 1.04 = 19240
Year 2- 19240 x 1.04 = 20009.6
Year 3- 20009.6 x 1.04 = 20809.984
Year 4- 20809.984 x 1.04 = 21642.3834
Year 5- 21642.3834 x 1.04 = 22508.0784

The answer rounded is $22508 so your brother will have to pay $22508 for his car

Hope this helps :)

Jane moved from a house with 58 square feet of closet space to an apartment with 29.58 square feet of closet space. What is the percentage decrease of Jane's closet space? A. 96% B. 39% C. 49% D. 51%

Answers

the answer is D 51 because if you do 29.58 divided by 58 you get .51 which is 51% decreased.

Answer:

the answer is D 51 because if you do 29.58 divided by 58 you get .51 which is 51% decreased.

Step-by-step explanation:


First fourth and tenth terms a(n) = 5 + (n + 1) 1/6

Answers

Answer:

a(4) = 5 5/6

a(10) = 6 5/6

Step-by-step explanation:

To find the 4th term, let n =4

a(n) = 5 + (n + 1) 1/6

a(4) = 5 + (4+1) 1/6

        =5+5 * 1/6

         = 5 + 5/6

          = 5 5/6



To find the 10th term, let n =10

a(n) = 5 + (n + 1) 1/6

a(10) = 5 + (10+1) 1/6

        =5+11 * 1/6

         = 5 + 11/6

          = 5 + 1 5/6

         = 6 5/6

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. Release your mouse button when the item is place. If you change your mind, drag the item to the trashcan. Click the trashcan to clear all your answers. Draw the graphic of the following conditions: {(x, y): x = 2} {(x, y): y -3]

Answers

Answer:

2,-3

Step-by-step explanation:

1.{(x, y): x = 2} we know x = 2

2.  {(x, y): y -3] we know y = -3

3. x,y = 2,-3

Answer:

3,4,1,2 is the order in which it goes in (go left to right)    :)

Step-by-step explanation:

The regular price of a newly released video game is $32. LeBron buys the video game when its on sale for 30% off the regular price. If sales tax is 10%, how much does LeBron pay for the video game.

Answers

Answer:

$24.64

Step-by-step explanation:

30% off is equal to multiplying by 0.7

(32*0.7)*1.1

Sales tax increases the price and so you multiply by 1.1 (equal to increasing 10%)

32*0.7*1.1=24.64

He will pay $24.64 for the game.

Which expression is equivalent to (2x^4 y)^3 PLEASE HURRY!!!

Answers

Answer:

8x¹²y³

Step-by-step explanation:

 (2x⁴y)³             Cube everything inside parentheses.

= 2² × (x⁴)³ × y³

= 8x¹²y³

is y = |x + 3| a linear function yes or noO

Answers

Answer:

Yes

Step-by-step explanation:

Because it passes vertical line test.

Yes, because y = x + 3 is a first degree function which is a linear function. Just ignore the absolute value.

every month, omar buys pizzas to serve at a party for his friends. In may, he brought three more than twice the number of pizzas he bought in April. If Omar bought 15 pizzas in may, how many pizzas did he buy in April

Answers

Answer:


Step-by-step explanation:

Omar bought 15 pizzas in May.

In May, he bought 3 more than twice the number that he bought in April.

Since we don't know how many he bought in April, let X = the number of April pizzas.

Then, 15 = 2X + 3

Now you can subtract 3 from both sides, then divide both sides by 2 to leave X by itself and discover what it equals.

Final answer:

Omar bought 24 pizzas in April, calculated by setting up an equation based on the information that in May he bought three more than twice the pizzas he got in April.

Explanation:

The question is asking to find the number of pizzas Omar bought in April given that he bought three more than twice the number in May, and he bought 15 pizzas in May. To solve this, we can set up an equation: April Pizzas + 3 = 2 × (April Pizzas) + 2 × 3. Since we know that Omar bought 15 pizzas in May, we substitute 15 for the total number of Pizzas in May, which gives us: April Pizzas + 3 = 30. Subtracting 3 from both sides gives us April Pizzas = 27 - 3, so April Pizzas = 24. Therefore, Omar bought 24 pizzas in April.

Your model train is 18 inches long.
It is an exact model of a train that is 72 feet long.
A window on the train is how many times wider than a window on the model?

Answers

Answer:

48 times wider

Step-by-step explanation:

Convert length of train to inches:

[tex]72 * 12 = 864[/tex] inches

Divide the length of the train by the length of the model train to find the scale.


so, 864 ÷ 18 = 48

and since the model train is proportional to the train, the window on the train is 48 times wider than the window on the model.

Answer:

48

Step-by-step explanation:

give an example of linear equation that is parrell to the y-axis

Answers

Answer: x = 5

You can pick any number you want, as long as it's not zero. The equation x = 5 has all points on this line that have an x coordinate of 5. The y coordinate can be anything you want

Example points on this line are: (5,1) and (5,2)

Note: this is a vertical line with the slope undefined. There is no y intercept. This is not a function because it fails the vertical line test.

Mary Jackson gets a student rate of $27.50 a month for health insurance. There is a $200 deductible. She recently received treatment for a covered condition. The bill was $2,350.00. Mary's insurance company provided payment of 80% of the bill less the deductible.

Answers

Answer:

the company's payment was $1720

Step-by-step explanation:

Mary's total cost (without the monthly premium) is $630

Mary has to cover her $200 deductible, leaving $2,150. The insurance company will cover 80 percent of that ($1,720), leaving Mary 20 percent ($430). So, Mary's total out-of-pocket cost for the surgery is $630.

What is the length of angle BC?

Answers

If you mean side BC (instead of angle BC), then the answer is 22 units.

To get this answer, set the sides AB and AC equal to each other and solve for x

AB = AC

2x - 24 = x - 2

2x-x = -2+24

x = 22

Since BC = x, and x = 22, this means BC is 22 units long.

We have m∠C = m∠B, therefore it's an isosceles triangle.

Therefore we have the equation:

2x - 24 = x - 2       add 24 to both sides

2x = x + 22      subtract x from both sides

x = 22

BC = x

Answer: |BC| = 22

What is the solution for -10 < x - 9?

Answers

ANSWER:

x > - 1

STEP-BY-STEP EXPLANATION:

- 10 < x - 9

x - 9 > - 10

x > - 10 + 9

x > - 1

Answer:

x > - 1

Step-by-step explanation:

- 10 < x - 9

x - 9 > - 10

x > - 10 + 9

x > - 1

Someone quickly help!!

Answers

Let's go:


[tex]\frac{32}{6x + 6} = \frac{24}{9x - 9} \\\\ 32.(9x - 9) = 24.(6x + 6) \\\ 288x - 288 = 144x + 144 \\\ 288x - 144x = 144 + 288 \\\ 144x = 432 \\\ x = 3[/tex]


I hope I helped you.


Answer:

x = 3

Step-by-step explanation:

Use Angle bisector theorem (look at the picture)

[tex]\dfrac{24}{9x-9}=\dfrac{32}{6x+6}\qquad\text{cross multiply}\\\\24(6x+6)=32(9x-9)\qquad\text{use the distributive property}\ a(b+c)=ab+ac\\\\(24)(6x)+(24)(6)=(32)(9x)+(32)(-9)\\\\114x+144=288x-288\qquad\text{subtract 144 from both sides}\\\\144x=288x-432\qquad\text{subtract}\ 288x\ \text{from both sides}\\\\-144x=-432\qquad\text{divide both sides by (-144)}\\\\x=3[/tex]

the function y=3.28x converts length from x meters to y feet Im really stuck im not real sure what to do

Answers

Step-by-step explanation: So this one can be a little confusing, but I think I can help. You see if 'y'= number of feet and 'x'= number of meters then y=3.28x is a way for you to figure out how many feet are constant to every meter.

Look at it more like, Number of Feet= 3.28 times the number of meters.

If you want to figure out many feet are constant to let's say...2 meters, then you would replace the 'x' variable with 2 and multiply it by 3.28.

It would look something like this:

y=3.28(2)

y= 6.56


Thus, every 1 feet there are 6.56 meters, or 6.56 meters equals 1 foot.

Hope this helps a little, tell me if you need anymore help with this!


Aldrin and Jan are standing at the edge of a huge field. At 2:00 p.m., Aldrin begins to walk along a straight path at a speed of 3 km/h. Two hours later, Jan takes a straight path at a 608 angle to Aldrin’s path, walking at 5 km/h. At what time the two friends be 13km apart?

Answers

Answer: After 2:29 hours both Aldrin and Jan will be 13 km apart from each other.

Time at that instant will be : 4:00 pm + 2.29 hours= 6:29 pm

Step-by-step explanation:

According to the figure:

Ab= c = 13 Km

AC = b = [tex]distance= speed\times time =5\times t[/tex]=5t Km

After two hours the distance covered by the Aldrin say till point D :

[tex]distance=speed\times time=3km/hr\times 2 hrs=6 Km[/tex]

Since, we are interested in determining the time at which Aldrin and Jan both 13 Km apart. For that Aldrin Additional distance covered by the Aldrin from point D to B is :

[tex]distance=speed\times time= 3km/hr\times t=3t Km [/tex]

CB= a = CD+DB= 6+3t

We will apply Laws of cosines:

[tex]C^2=A^2+B^2-2AB\times Cos\theta[/tex]

[tex](13)^2=(6+3t)^2+(5t)^2-2(5t)(6+3t)Cos 60^o[/tex]

[tex]19t^2+6t-133=0[/tex]

On solving the the above equation by quadratic formula we get two values of 't'

1) t = 2.49 hours , 2) t = -2.80 hours

Since,time cannot be in negative so we will ignore the negative value of t

t = 2.49 = 2:29 hours ,(0.49 hour=0.49 × 60 min=29.4 min)

After 2.49 hours after the walking of Jan. Both Aldrin and Jan will be 13 km apart from each other.

Time at that instant will be : 4:00 pm + 2:29 hours= 6:29 hour

PLS HELP If g(n) varies inversely with n and g(n) = 6 when n = 2, find the value of n when g(n) = 1.5.

Answers

Answer:

g(2)=1.5. Which would be three.

Step-by-step explanation:

You would just plug in n=2 into the equation and then divide it out.


The value of n, when g(n) is 1.5, given that g(n), varies inversely with n and equals 6 when n is 2, we first find the constant of variation k = 12 and then divide k by 1.5 to get n = 8.

If g(n) varies inversely with n, the relationship between g(n) and n can be expressed as g(n) = k/n, where k is a constant. When g(n) = 6 and n = 2, we can find the constant k by multiplying 6 and 2 to get k = 12.

To find the value of n when g(n) = 1.5, we can set up the equation 1.5 = k/n. Using our previously found constant k (12), we substitute it into the equation to get 1.5 = 12/n. Solving for n, we multiply both sides of the equation by n and then divide both sides by 1.5 to get n = 12/1.5, which simplifies to n = 8.

Determine the slope for the following:
-6x-2y=12

Answers

Answer:

New Slope is -3

Step-by-step explanation:

First we will need to simplify the equation to make it easier. so since all numbers are divisible by 2 so instead of -6x-2y=12 the new equation will be -3x-y=6. then you are gonna solve for y and the answer is -y=3x+6. so then you will divide by -1 to make y positive. then Your Final Equation is y=-3x-6


Your new slope is -3

Jason's grandparents gave him $500 for his 16 birthday. He put the money in the bark and decided to withdrow $35 each week. I need help with part b, how do I do the table??

Answers

Answer:

X           Y

0          $500

1           $465

2          $430

3           $395

4          $360

5          $325

6          $290


Step-by-step explanation:

You subtract 35 from the first Y.


A line passes through the points (-10,-5) and (20,10) what is the equation of the line A. y=5x B.Y=2x C.1/2 x Dy=1/5 x

Answers

The correct answer is C

Answer:

C. y = ½x

Step-by-step explanation:

Step 1. Find the slope of the line

The general equation for a straight line is

y = mx + b

The slope m is

m =(y₂ -y₁)/(x₂/x₁)

Your points are (-10, -5) and (20, 10).

m = [10 – (-5)]/[20 – (-10)]     Remove inner parentheses

m  = (10+5)/(20 + 10)

m = 15/30

m = ½

===============

Step 2. Find the equation of the line

Substitute the point (20, 10) into the general equation.

10 = ½×20 + b

10 = 10 + b

b = 0

The equation of the line is y = ½x.

The graph shows your line passing through your two points with a slope

m = ½ and a y-intercept at (0, 0).


Suppose a railroad rail is 2 kilometers and it expands on a hot day by 19 centimeters in length. Approximately how many meters would the center of the rail rise above the​ ground?

Answers

Answer:


rail rise approximately 0.19 m above the ground

Step-by-step explanation:

as we know that

1m=100cm

and 1cm=[tex]\frac{1}{100}[/tex] m

similarly

19cm=[tex]\frac{19}{100}[/tex]m

19cm=0.19m

rail rise approximately 0.19 m above the ground

The calculated sagitta is approximately 0 meters, considering the very small expansion compared to the original length of the rail.

Assuming the rail forms an arc of a circle with the expansion, the rail's ends remain on the ground, and only the center rises.

Consider the original length of the rail as the chord of the circle, and the expanded length as the arc of the circle. The rise of the rail's center is the sagitta (height) of the arc. The length of the chord (C) is 2000 meters, and the expansion (e) is 0.19 meters (19 centimeters). The length of the arc (A) is C + e, which equals 2000.19 meters.

The formula for the sagitta when the arc is very close to the chord in length is given by:

Sagitta (s) ≈ (e² / (8 * C)) + (C² / (8 * A))

Plugging in the values:

s ≈ (0.19² / (8 * 2000)) + (2000² / (8 * 2000.19))

After calculation:

s ≈ 2.25 × 10⁻³ m + 250 m

s ≈ 250.00225 m

Since we are dealing with a very small expansion relative to the size of the rail, the sagitta (height increase of the center of the rail) is very close to 0 meters.

ABC = PQR given ABC = PQR, m<B = 3v + 4, and m<Q = 8v vind m<B ans m<Qm

Answers

Answer:

v = 4/5 or 0.8

Step-by-step explanation:

Givens

These two corresponding parts are equal

<B = 3v + 4<Q = 8v

Equation

3v + 4 = 8v                    Subtract 3v from both sides3v - 3v + 4 = 8v - 3v     Combine4 = 5v                           Divide by 54/5 = 5v/5                    Divide

Answer

v = 4/5 or v = 0.8

Other Questions
Many of Theodore Roosevelt's actions influenced the course of the United States, and indeed, the world. What do you like or not like about Roosevelt? Do you agree or disagree with his domestic and foreign policies? What is your opinion of his attitude toward foreign nations and peoples? Do you agree or disagree with his methods of achieving his goals for the United States? In your own words, be as detailed as possible. What happened when British troops tried to seize colonists' weapons in Concord, Massachusetts?A. The colonists sent a new petition to the kingB. The colonial militia gave up it's weaponsC. The troops found and destroyed the weaponsD. The colonial militia drove the troops back to Boston Which statement best describes how todays scientific community views light? Light behaves only like waves. Light behaves only like particlesLight behaves like both waves and particles. What is the answer to linear equation: 9t = -3 Which statement describes how connotation is used in this passage refurbished phone 30% off now only 78 how much was the phone before A local amusement park charges $21.50 per daily adult ticket and $14.75 per daily child's ticket. A group of 12 people paid $204.00 for tickets. Which system of equations could be used to find x, the number of adult tickets purchased, and y, the number of children's tickets purchased Match the vocabulary word with its meaning. 1.desecrate accepting the different views or beliefs of others 2.tolerance any conditions related to the internal affairs of a nation 3.domestic to destroy or damage offensively a sacred object or thing 4.envoy an official diplomat or representative of a nation One way in which the Aztecs, Incas, and Mayans were similar is that they....A) traveled to the Western Hemisphere from Africa B) Had developed advanced civilizations before the arrival of European settlers C) Settled in the desert of the Southwestern United States D) left no evidence to help us understand their cultures which statment best summarizes the roles of Catawba men and womenPLEASE HELP MEEEA. Men did most of the farming work, while women helped. B. Men created items for trade, while the women did all the farming. C. Men spent time fishing, while women did all the farming. D. Men discussed tribal issues and women created items to trade. Please help!!!!Write the equation of the given line in slope-intercept form. Rank the following quantities from smallest to largest: 5,200, dozen, pair,gross,ream. six more than seven times a number is less than three times the number decreased by fourteen. FInd the numbers that make this true Explain the process of natural selection: give specific examples. Changes in which of the following is the primary driving force behind mechanical weathering? A.acidity B.salinity C.pressure D.temperature Which is an example of dealer incentives? A. Sun car dealers pay $18,000 to Galaxy car manufacturers for a car worth $20,000. B. Sun car dealers pay $21,000 to Galaxy car manufacturers for a car worth $20,000. C. Sun car dealers pay $20,000 to Galaxy car manufacturers for a car worth $20,000. Jake sold 36 tickets at the school fair, and Jeanne sold 15 tickets. What is the ratio in simpilest form, of the number of tickets Jeanne sold to the number of tickets Jake sold. Find the value of x so that the line m is parallel to line I. A rescue helicopter is used to help victims who fell in a ditch. The helicopter begins at sea level, which is an elevation of 0 feet. It then travels down for 100 seconds at a speed of 10.5 feet per second. It then travels directly up for 150 seconds at a speed of 5.2 feet per second. After this 250 second period, how much time, in seconds, will it take for the rescue helicopter to travel back to sea level at the helicopter's maximum speed of 15.8 feet per second? The glass Castle discussion question quiz Steam Workshop Downloader