what is the axis of symmetry of y=3x^2+6x+5

Answers

Answer 1
Answer: The axis of symmetry is the equation x = -1

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

Explanation:

The equation y = 3x^2+6x+5 is in the form y = ax^2+bx+c

In this case, a = 3, b = 6, c = 5.

We will plug a = 3 and b = 6 into the formula below

x = -b/(2*a)
x = -6/(2*3)
x = -6/6
x = -1

Therefore, the axis of symmetry is x = -1

This is the vertical line that passes through the vertex. We can reflect the parabola over this line to have one half of the curve line up perfectly with the other half of the curve.


Related Questions

A jacket is on sale for $15 off. As part of a one-day sale, a 20% discount is applied to all purchases. If x represents the original price of the jacket, which expression represents the final price of the jacket during this sale? 0.2x – 3 0.8x – 12 0.8x – 15 0.2x – 15

Answers

Answer:

0.8x – 12

Explanation:

The sale price is (x-15). After the 20% discount, the final price is 0.80 times the sale price, so is ...

... final price = 0.80×(x -15) = 0.80x -12

Answer:

The correct option is B.

Step-by-step explanation:

Let the original price of the jacket be x.

A jacket is on sale for $15 off. As part of a one-day sale, a 20% discount is applied to all purchases.

The price of jacket after $15 off is [tex]x-15[/tex].

Then 20% discount is applied, so the final price of the jacket is

[tex]P=(x-15)(1-\frac{20}{100})[/tex]

[tex]P=(x-15)(1-0.2)[/tex]

[tex]P=(x-15)(0.8)[/tex]

[tex]P=0.8x-12[/tex]

The final price of the jacket during this sale is 0.8x-12. Therefore the correct option is B.

The equation of the line of best fit of a scatter plot is y = −4x − 6. What is the slope of the equation?

−6
−4
4
6

Answers

The slope-intercept form of a line is:

y=mx+b, where m=slope and b=y-intecept

So if y=-4x-6 the slope is -4.
y = -4x -6  

the equation is written in slope intercept form ( y = mx +b ) where b is the y intercept
therefore the y intercept is -6 

Hello, I'm working on a project and I've been stumped.

How would I find the central ark of a ferris wheel? I'm using the London Eye ferris wheel for my project, and so far I know it has a diameter of 120 meters and 32 cars. It has a circumference of 377m and an area of 11,310m.

How can that information help me? Please include all steps and a clear explanation, and give the answer in degrees. Thank you.

Answers

a circle has 360 degrees

 the ferris wheel has 32 cars so the circle is broken up into 32 sections

 the central angle would be the angle between 2 of the cars

 so divide 360 by 32

360/32 = 11.25 degrees



Suppose there is a test for esophageal cancer that is 95% accurate both on those that do and those that do not have esophageal cancer. if 0.7 percent of the population has esophageal cancer, compute the probability that a person has this cancer, given that his or her test results indicates so.

Answers

It was already stated that the probability that the population may have esophageal cancer is 0.7 percent. However, the additional statement that the accuracy is 95% will affect the probability as follows:

Probability = (0.007)(0.95) = 0.00665 or 0.665%

So instead of 0.7%, the probability will decreased to 0.665% because of the accuracy.

EASY 5 POINTS REALLY NEED HELP RN!!!! Which expression finds the length of side x in this right triangle?

Answers

Use Pythagoras:


x² = (8.5)² + (5)²


x = √[(8.5)² + (5)²]

Answer:

Top right one

Step-by-step explanation:

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The Greasy Grab Bag claims that customers can make 20 different meal combinations from the menu items. If the Greasy Grab Bag has 4 sandwiches, 3 sides, and 2 drinks, which of the following is correct?

Answers

The answer is A. The Greasy Grab Bag is understating the number of meal combinations.
4 * 3 * 2 = 24
and 24 > 20

The correct number of different meal combinations that customers can make from the menu items at the Greasy Grab Bag is 24.

To determine the number of different meal combinations, we need to consider that each meal consists of one sandwich, one side, and one drink. Given that there are 4 sandwiches, 3 sides, and 2 drinks to choose from, we can calculate the total number of combinations by multiplying the number of choices for each category together.

The number of sandwich choices is 4, the number of side choices is 3, and the number of drink choices is 2. Therefore, the total number of meal combinations is calculated as follows:

Total combinations = Number of sandwich choices — Number of side choices — Number of drink choices

Total combinations = [tex]$4 \times 3 \times 2$[/tex]

Now, let's calculate the total number of combinations:

Total combinations =[tex]$4 \times 3 \times 2 = 12 \times 2 = 24$[/tex]

Thus, there are 24 different meal combinations that customers can make, which means the Greasy Grab Bag's claim of 20 different meal combinations is incorrect. The correct number is 24.

Curt is installing a picket fence around his garden which is 45.45 ft by 14.63 ft. When he gets to the hardware store he finds that each picket fence slat is two feet wide. If Curt does not want any spaces between each slat, use estimation to determine how many slats of fencing he should buy.

Answers

The perimeter of the garden is given

P = 45.45 + 45.45 + 14.63 + 14.63 = 120.16 feet

One picket fence slat is 2 feet wide, so the number of fence Curt should buy is

120.16÷2 = 60.08 rounded to 61 fences 

let A and B be nxn matrices such that AB is singular prove that either A or Bis singular

Answers

[tex]\det(\mathbf{AB})=\det\mathbf A\times\det\mathbf B[/tex]

Because [tex]\mathbf{AB}[/tex] is singular, we have

[tex]\det(\mathbf{AB})=0[/tex]

from which it follows that either [tex]\det\mathbf A=0[/tex] or [tex]\det\mathbf B=0[/tex].

A flagpole cast a shadow 16 feet long at the same time a pole 9 feet high casts a shadow 6feet long what is the height in feet of the flagpole

Answers

The pole would be 24 feet high.
X/16=9/6
X=24

To put up several tents for a camping trip, you need several pieces of rope each 6 2/3 feet long. If you have a rope that is 43 feet, how many pieces can you cut for the tents?

Answers

[tex]\bf 43\div 6\frac{2}{3}\implies \cfrac{46}{6\frac{2}{3}}\implies \cfrac{\frac{46}{1}}{\frac{6\cdot 3+2}{3}}\implies \cfrac{\frac{46}{1}}{\frac{20}{3}} \implies \cfrac{46}{1}\cdot \cfrac{3}{20}\implies \cfrac{69}{10} \\\\\\ \boxed{6\frac{9}{10}}\qquad \qquad \cfrac{6\cdot 10+9}{10}\implies \cfrac{69}{10}[/tex]

For each function, use the slope formula to calculate the rate of change between the points. In your final answer, include all of your calculations.



f(x):

(a, f(a) and (b,f(b)

1.) f(x)=x - 3 (0,f(0)) and (6,f(6))
2.) f(x) = -x (-4,f(-4)) and(2,f(2))
3.) f(x)=x2 (-2,f(-2)) and (0,f(0))
4.) f(x)=x3 (-1,f(-1)) and (1,f(1))
5.) f(x)=2x (0,f(0)) and (4,f(4))

Answers

Function 1: 

f(x) = x - 3
f(0) = 0 - 3 = -3
f(6) = 6 - 3 = 3

Slope = [tex] \frac{-3-3}{6-0} = \frac{-6}{6} =-1[/tex]

Function 2:

f(x) = -x
f(-4) = 4
f(2) = -2

Slope = [tex] \frac{4--2}{-4-2}= \frac{6}{-6}=-1 [/tex]

Function 3:

f(x) = x²
f(-2) = (-2)² = 4
f(0) = (0)² = 0

Slope = [tex] \frac{4-0}{-2-0}= \frac{4}{-2}=-2 [/tex]

Function 4:

f(x) = x³
f(-1) = (-1)³ = -1
f(1) = (1)³ = 1

Slope = [tex] \frac{-1-1}{-1-1}= \frac{-2}{-2}=1 [/tex]

Function 5:

f(x) = 2ˣ
f(0) = 2⁰ = 1
f(4) = 2⁴ = 16

Slope = [tex] \frac{1-16}{0-4}= \frac{-15}{-4}=3.75 [/tex]

There is a value of a such that subtracting a-4 from 4a+16 gives an answer of -25. What is that value of a?

Answers

Let's see what happens:

4a+16 - (a-4) = 3a + 20 = 25 => 3a = 5 => a = 5/3
If you subtract (a-4) from (4a+16), the new equation to work with would be 3a + 12. And if the difference of these two equations is 3a + 12, which would give an answer of -25, (pictured 3a + 12 = -25), by using algebra we could try a = -13/3 or a equals negative 13 over three. I hope this helps

what is the value of x in the equation 5(4x-10)+10x=4(2x-3)+2(x-4) ?

-7/4
-1/4
3/20
3/2

Answers

5(4x - 10) + 10x = 4(2x - 3) + 2(x - 4)
20x - 50 + 10x = 8x - 12 + 2x - 8
30x - 50 = 10x - 20
30x - 10x = -20 + 50
20x = 30
x = 3/2 <==

Answer:

[tex]\frac{3}{2}[/tex]

Step-by-step explanation:

Here, the given expression is,

[tex]5(4x-10)+10x=4(2x-3)+2(x-4)[/tex]

By distributive property,

[tex]20x - 50 + 10x = 8x - 12 + 2x - 8[/tex]

By combining like terms,

[tex]30x -50=10x-20[/tex]

Adding 50 on both sides,

[tex]30x=10x-20+50[/tex]

[tex]30x = 10x + 30[/tex]

Subtracting 10x on both sides,

[tex]20x = 30[/tex]

Divide both sides by 20,.

[tex]x=\frac{3}{2}[/tex]

Hence, LAST option is correct.

There are 12 more toy cars than toy trucks in a toy box. With a total of 38 toy cars and trucks.How many toy trucks are in the toy box?

Answers

based on my calculation its 31 toy trucks.
i just simply do like this

38÷2
=19-12
=7

38-7
=31#

Answer:

Hui

Step-by-step explanation:

Look at the radian measure for every 30 degrees and 45 degrees in the Unit Circle. Explain how finding the exact measure in quadrant one can help you determine the remaining exact radian measures.

Answers

Google radian measures on the unit circle for lots of images of completed unit circles with these radian measurements. But the core idea is that if you can find the 30° and 45° radian measures (π/6 and π/4 respectively) to move to the corresponding angle in quadrant 2, you'd just need to add π/2 (90°) to that value, to find the values in quadrant 3 add π (180°), quadrant 4 add 3π/4 or you could also just minus π/2 to move 90° in the opposite direction. Say I wanted to find the 45° angle in quadrant 3, measured from the 0° line on the unit circle, in radians. I could say I know 45° is π/4 in quadrant 1, so to move it to quadrant 3, I need to add π or 180° to it. π/4 + π = π/4 + 4π/4 = 5π/4 which is the angle we need in radians.

Linear regression describes the extent to which _______ predicts ________.

Answers

Linear regression describes the extent to which the known variable predicts the to-be-predicted variable.
Final answer:

Linear regression describes the extent to which an independent variable predicts a dependent variable through a linear relationship.

Explanation:

Linear regression describes the extent to which an independent variable (x) predicts a dependent variable (y) through a linear relationship.

For example, if we have data that shows the number of hours studied (x) and the test score (y) of students, linear regression can help us determine how well the number of hours studied predicts the test score.

The regression line is used to model the linear relationship between the independent and dependent variables in the population.

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Susie is paying $502.33 every month for her $150,000 mortgage payment. If this is a 4.5% 30 year mortgage, how much interest will she pay over the 30 years of payments?

Answers

You could find the interest paid by simply realizing that:

502.33(12)30-150000=total interest paid

i=502.33(12)30-150000

i=$30838.80

Answer:

$30838.80

:3 simply it pls

Compare the value of the
4 in 40 and 400

Answers

The 4 in 40 is in the tens place and the 4 in 400 is in the hundreds place so 40 will be less than 400.

What if the atom has no charge

Answers

The answer to this question is:

What if the atom has no charge
"Then its called "Not Yet Charge" or "Neutral" because the atom has no Protons, Neutrons or Electrons. And here is one that loses some of it electrons to this is called an Ion"

Hoped This HelpedMikggc 
Your Welcome :)

Tank 1 initially contains 50 gals of water with 10 oz of salt in it, while tank 2 initially contains 20 gals of water with 15 oz of salt in it. water containing 2 oz/gal of salt flows into tank 1 at a rate of 5 gal/min and the well-stirred mixture flows from tank 1 into tank 2 at the same rate of 5 gal/min. the solution in tank 2 flows out to the ground at a rate of 5 gal/min. if x1(t) and x2(t) represent the number of ounces of salt in tank 1 and tank 2, respectively, set up but do not solve an initial value problem describing this system.

Answers

[tex]\dfrac{\mathrm dx_1}{\mathrm dt}=\dfrac{2\text{ oz}}{1\text{ gal}}\dfrac{5\text{ gal}}{1\text{ min}}-\dfrac{x_1(t)\text{ oz}}{50\text{ gal}}\dfrac{5\text{ gal}}{1\text{ min}}[/tex]
[tex]\dfrac{\mathrm dx_2}{\mathrm dt}=\dfrac{x_1(t)\text{ oz}}{50\text{ gal}}\dfrac{5\text{ gal}}{1\text{ min}}-\dfrac{x_2(t)\text{ oz}}{20\text{ gal}}\dfrac{5\text{ gal}}{1\text{ min}}[/tex]

[tex]\implies\begin{cases}\dfrac{\mathrm dx_1}{\mathrm dt}=10-\dfrac1{10}x_1\\\\\dfrac{\mathrm dx_2}{\mathrm dt}=\dfrac1{10}x_1-\dfrac14x_2\\\\x_1(0)=10\\\\x_2(0)=15\end{cases}[/tex]

box contains 15 items,4 of which are defective and 11 are good. Two items are selected. What is probability that the first is good and the second defective?

Answers

The probability of the first item being good is 11/15.
Since we have taken 1 item out the remaining total is now 14, so the probability of getting a defective item is now 4/14.
Now you multiply the probabilities together to get (11/15)(2/7)=22/105

Final answer:

The probability that the first item selected is good and the second item is defective is 22/105.

Explanation:

To find the probability that the first item selected is good and the second item is defective, we need to consider the total number of items, the number of good items, and the number of defective items.

The total number of items is 15, with 11 being good and 4 being defective. When we select the first item, there are 15 options, out of which 11 are good. Therefore, the probability of selecting a good item first is 11/15.

After selecting the first item, there are now 14 items left in the box, with 10 being good and 4 being defective. When we select the second item, there are 14 options, out of which 4 are defective. Therefore, the probability of selecting a defective item second is 4/14, which simplifies to 2/7.

To find the probability that both events occur, we multiply the probabilities: (11/15) * (2/7) = 22/105.

Lena bought 10 pounds of potatoes for $5.50 write the cost as cents per pound

Answers

10 pounds of potatoes for $5.50
one pound = $5.50 / 10 = $0.55

answer

it cost 55 cents per pound
Just set the proportional problem up with the total cost over the total pound 

Angle BCA is congruent to angle DAC, and angle BAC is congruent to angle DCA by:

the vertical angle theorem.
the alternate interior angles theorem.
the reflexive property.
None of the choices are correct.

Answers

Answer is the alternate interior angles theorem

Angle BAC is congruent to angle DCA by the alternate interior angles theorem. Option B is correct.

What is the angle?

Orientation of the one line with respect to the horizontal or other respective line is known as a measure of orientation and this measure is known as the angle.

here,
The pro[perty of parallel lines states that when two parallel lines intersect by the same transversal line the alternate interior angle will be equal as also the alternate exterior angles.

So,
Line BC and AB are parallel lines and AC is a transversal line,
So,

Angle BAC  = angle DCA

Thus, angle BAC is congruent to angle DCA by the alternate interior angles theorem. Option B is correct.

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What is 4.76 hours converted to min and sec

Answers

4hr +(.76hr(60min/hr))

4hr + 45.6 min

4hr+45min+(.6min(60sec/min))

4hr+45min+36sec

4:45:36

Oh, if you really only wanted min and sec without hours...

4hr(60min/hr)+45min+36sec

240min+45min+36sec

285min+36sec
4.76 hours times 60 minutes gives 285.6 minutes. We already have 285 minutes. 60% of 1 minute is 36 seconds, so the answer is 285 minutes and 36 seconds. :D

Estimate then find the product 7×7956

Answers

Final answer:

To estimate the product of 7 and 7956, round 7956 to 8000 and then multiply by 7 to get 56,000. The exact product, calculated using the multiplication algorithm, is 55,692.

Explanation:

To estimate the product of 7×7956, we can round 7956 to the nearest thousand which gives us 8000. Then, we multiply 7×8000 to get an estimated product of 56,000. To find the exact product, we multiply 7 by 7956 to get 55,692.

When calculating such a product, we use the multiplication algorithm where we multiply each digit of the second number by the first number and then add up the resulting values.

Here's how you would perform the multiplication step by step:

7×7 = 49, add the carried over 6 to get 55, write down 5 and carry over the 5.

After placing the digits in their correct positions, we get the final answer: 55,692. Therefore, the exact product of 7×7956 is 55,692.

Txt me quicky i need help

Answers

your chances of getting a even number is 

P(even) = 4/8

simplified is 1/2


hope this helps

the formula I=square root w/r gives the electric current I amperes that flows through an appliance, where W is the power in watts and R is the resistance in ohms. which set of numbers best describes the value of I for the given values of W and R? ( 42.) W=100,R=25 ( 43.)W=100,R=50

Answers

Final answer:

The value of I for the given values of W and R can be calculated using the formula I = [tex]\sqrt{(W/R)[/tex]. For W = 100 and R = 25, the value of I is 2 amperes. For W = 100 and R = 50, the value of I is approximately 1.41 amperes.

Explanation:

The formula I = [tex]\sqrt{(W/R)[/tex]  gives the electric current in amperes that flows through an appliance, where W is the power in watts and R is the resistance in ohms.

To determine the value of I for the given values of W and R, we can simply substitute the values into the formula. For the first set of numbers, W = 100 and R = 25:

[tex]I = \sqrt{(100/25)} = \sqrt{(4)} = 2[/tex] amperes.

For the second set of numbers, W = 100 and R = 50:

[tex]I = \sqrt{(100/50)} = \sqrt{(2) }[/tex]≈ 1.41 amperes.

Therefore, the value of I for the first set of numbers (W = 100, R = 25) is 2 amperes, and the value of I for the second set of numbers (W = 100, R = 50) is approximately 1.41 amperes.

If m and n are positive integers such that the greatest common factor of [tex] m^{2} n^{2}[/tex] and [tex] m n^{3}[/tex] is 45, then which of the following could n equal?
(A) 3
(B) 5
(C) 9
(D) 15
(E) 45

Answers

the greatest common factor of [tex] m^{2} n^{2} [/tex] and [tex]m n^{3} [/tex]

is
 
gcd(m*m*n*n, m*n*n*n) =m*n*n=[tex]m n^{2} [/tex]

what we did, was to see how many m's and how many n's, each expression have, and then pick the smallest of each letter (factor).

the reason is that the common factor, must have enough m's and n's to divide the m's and n's of both expressions

so
[tex]45=m n^{2} [/tex]
also 
[tex]45=5*9=5*3^{2}[/tex]

thus, n is equal to 3


Answer: A)3

For a standard normal distribution, the probability of obtaining a z value between -1.9 to 1.7 is

Answers

P(X≤−1.9)=0.0287165598160018P(X≤−1.9)=0.0287165598160018

P(X≥1.7)=0.044565462758543P(X≥1.7)=0.044565462758543

P(−1.95996398454005≤X≤1.95996398454005)=0.95

Answer:

92.67% probability of obtaining a z value between -1.9 to 1.7.

Step-by-step explanation:

Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

For a standard normal distribution, the probability of obtaining a z value between -1.9 to 1.7 is

This probability is the pvalue of z = 1.7 subtracted by the pvalue of z = -1.9.

z = 1.7 has a pvalue of 0.9554.

z = -1.9 has a pvalue of 0.0287.

So there is a 0.9554-0.0287 = 0.9267 = 92.67% probability of obtaining a z value between -1.9 to 1.7.

Write an equation of a line that is perpendicular to the given line and that passes through the given point.
-x + 5y= 14; (-5, -2)

A. Y=-5x-27
B.y=-1/5x-27
C. Y=-1/5x-15
D. Y=5x-27

Answers

To determine the equation that would be perpendicular with a certain line, we must first know the characteristics of a perpendicular line. This line would have a 90 degrees angle with another line so that the slope of this line would be the negative reciprocal of the slope of the other line. To write the equation, given a certain point we use the point-slope form of a line, y -y1 = m(x - x1).

Original line: -x + 5y= 14
                              y = x/5 + 14/5
                       slope = 1/5

Perpendicular line's slope = -5
                         y - y1 = m (x - x1)
                         y - (-2) = -5 (x - (-5))
                                  y = -5x - 25 -2
                                  y = -5x -27
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Although Walker's match did not require the bottle of acid, nevertheless it was not a good one. It could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. In a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. The match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. It would ignite when rubbed on any dry surface, and there was no longer any sputtering. This was the phosphorus match, the match with which we are so familiar.Read this sentence from the text:In these days we can kindle a fire without any trouble, because we can easily get a match...What is the purpose of this line from the text? To contradict the main idea of the article To imply the main idea of the article To provide a conclusion to the article To support the claim of the article2. Read this sentence from the text: (same STORY)But the flame, however faithfully watched, would sometimes be extinguished.How does this line show the problem with early fire? It shows how dependable nature is. It shows how people got fire. It shows how long it took to create matches. It shows the need for matches.+3. A student is revising a paper and needs to find another word to express a feeling of confusion. What reference manual should the student use to find similar words? Dictionary Encyclopedia Thesaurus Wikipedia The difference between the square roots of a number is 30. What is the number? Between 2005 and 2008, the average rate of inflation was about3.4 per year. If a cart of groceries cost $140 in 2005, what did it cost in 2008 Match each kind of resum to its definition. 1. chronological2. curriculum vitae3.combination4. functionala.highlights the applicant's skill set at or near the top with a brief work history included below b.includes extensive lists of activities, memberships, publications, affiliations, and related information c.highlights the skills, talents, and accomplishments of the job hunter and is not a straightforward employment history d. format preferred by most employers, easiest type to read With its discussion of universal human rights, the Bill of Rights is most similar to what other foundational documents? 1-the English Bill of Rights of 16892-the Articles of Confederation3-the Declaration of Independence4-the Declaration of the Rights of Man and of the Citizen Among the Pomo Indians, the art of basketry is traditionally practiced by What is the most common result when heat radiation is released from Earth?A) The amount of carbon dioxide in the atmosphere increases.B) The temperature of the atmosphere decreases.C) Water vapor is produced in the atmosphere.D) The heat causes an increase in precipitation.E) Certain gases in the atmosphere absorb the heat. In the reaction of 1.23 g of salicylic acid, molar mass 138.12 g/mol, with 2.85 g of acetic anhydride, molar mass 102.10 g/mol, a student obtained 1.39 g of acetylsalicylic acid, molar mass 180.17 g/mol. What is the percent yield?I found that salicylic acid was the limiting reactant so do I just find the mass from there? Steam Workshop Downloader