1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Thepotemich [5.8K]
2 years ago
12

The vertex of the parabola below is at the point (3, 2), and the point (4,6) is

Mathematics
1 answer:
adell [148]2 years ago
8 0

Answer:

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

Step-by-step explanation:

You might be interested in
Evaluate Dx / ^ 9-8x - x2^
Solnce55 [7]
It depends on what you mean by the delimiting carats "^"...

Since you use parentheses appropriately in the answer choices, I'm going to go out on a limb here and assume something like "^x^" stands for \sqrt x.

In that case, you want to find the antiderivative,

\displaystyle\int\frac{\mathrm dx}{\sqrt{9-8x-x^2}}

Complete the square in the denominator:

9-8x-x^2=25-(16+8x+x^2)=5^2-(x+4)^2

Now substitute x+4=5\sin y, so that \mathrm dx=5\cos y\,\mathrm dy. Then

\displaystyle\int\frac{\mathrm dx}{\sqrt{9-8x-x^2}}=\int\frac{5\cos y}{\sqrt{5^2-(5\sin y)^2}}\,\mathrm dy

which simplifies to

\displaystyle\int\frac{5\cos 
y}{5\sqrt{1-\sin^2y}}\,\mathrm dy=\int\frac{\cos y}{\sqrt{\cos^2y}}\,\mathrm dy

Now, recall that \sqrt{x^2}=|x|. But we want the substitution we made to be reversible, so that

x+4=5\sin y\iff y=\sin^{-1}\left(\dfrac{x+4}5\right)

which implies that -\dfrac\pi2\le y\le\dfrac\pi2. (This is the range of the inverse sine function.)

Under these conditions, we have \cos y\ge0, which lets us reduce \sqrt{\cos^2y}=|\cos y|=\cos y. Finally,

\displaystyle\int\frac{\cos y}{\cos y}\,\mathrm dy=\int\mathrm dy=y+C

and back-substituting to get this in terms of x yields

\displaystyle\int\frac{\mathrm dx}{\sqrt{9-8x-x^2}}=\sin^{-1}\left(\frac{x+4}5\right)+C
4 0
3 years ago
Kiwi and Corn got into an argument over if 1.75 was a reasonable estimate for 6. Do you think 1.75 was a reasonable estimate for
snow_tiger [21]

Answer:

No, it is not.

Step-by-step explanation:

comparing the two given values, 1.75 and 6, estimating 1.75 for 6 is not reasonable. This is due to the fact that converting 1.75 to the nearest whole number gives 2 which is far away from 6. Since,

   6 - 2 = 4

So, estimating 1.75 for 6 would involve a large value of error. Which make it unreasonable. It would have been more reasonable to estimate 1.75 for 2.

4 0
4 years ago
help pls The circumference of the hub cap of a tire is 80.1 centimeters. Find the area of this hub cap. Use 3.14 for pi. Use pen
Liula [17]

Answer: The area is 510.25 cm². If the circumference of the cap were smaller then the area would be smaller as well

Step-by-step explanation:

First, you must find the radius

<em>80.1 ÷ 3.14 = 25.5</em>

<em>25.5 ÷ 2 = 12.75 <---- radius</em>

Then from that, you find the area

A=πr²

<em>12.75² = 162.5</em>

<em>162.5 × 3.24 = 510.25</em>

<em></em>

<em>Hope this was helpful!</em>

<em></em>

3 0
2 years ago
Read 2 more answers
John is building a rectanglular parking lot. The area of the lot is A(x) = -2x^2 + 200x.
stealth61 [152]

Answer:

40, 2000, 50

Step-by-step explanation:

I am not sure, but if you find any other answer, you can use this numbers

4 0
3 years ago
Six friends, four boys, and two girls went to a movie theater. They wanted to sit in a way so no girl sits on either first or la
goldfiish [28.3K]

Answer: 5 valid arrangements

Step-by-step explanation:

This depends on whether the boys or girls swapping places are considered unique solutions.  I'm going to assume that is no, because there would be an unrealistic amount of solutions if it is true.

Assuming G = girl and B = boy, these are the possible arrangements.

(I will bold the valid solutions).

GGBBBB

GBGBBB

GBBGBB

GBBBGB

GBBBBG

BGGBBB

BGBGBB

BGBBGB

BGBBBG

BBGGBB

BBGBBG

BBBGGB

BBBBGG

Thus, there are 5 valid arrangements.

Hope it helps <3

6 0
3 years ago
Read 2 more answers
Other questions:
  • a certain computer loses half of its value every two years. after how many years will the computer be worth 12.5% of the initial
    11·2 answers
  • PLEASE, I NEED HELP! I will not accept nonsense answers, but I will give the person a BRAINLIEST if you get it correct.
    5·1 answer
  • Fernando bought a jacket for $185 and sold it for 1 1/2 times what he paid. Marisol spent 1/5 as much as Fernando on the same ja
    11·1 answer
  • Find the value of x.
    15·2 answers
  • a crate of tennis balls measures 25 inches by 25 inches by 15 inches. each tennis ball has a radius of 1.35 inches. How many ten
    9·1 answer
  • Calculate the constant of variation if y varies directly as x.
    13·1 answer
  • What is 20% of 40 end result
    15·1 answer
  • Y'all- this question make's 0 sense to my big brain help me out
    13·1 answer
  • What is thesimple interest rate if you borrowed $3000 at 7% for 10 years?
    14·2 answers
  • 15c⁵d³/-3c²d⁷<br> help plzzzz
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!