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
Molodets [167]
3 years ago
14

ASAPPP!!!! HELP I WILL GIVE 100POINTS AND BRAINLIST Question 9 (Essay Worth 10 points)

Mathematics
1 answer:
Luda [366]3 years ago
7 0

Answer:

Part A)

The <em>x-</em>intercepts are (-1/4, 0) and (4, 0).

Part B)

The vertex is a maximum because the leading coefficient is negative.

The vertex is (1.875, 72.25).

Part C)

We can plot the zeros and the vertex, and connect them with a curve.

Step-by-step explanation:

The function given is:

f(x)=-16x^2+60x+16

Part A)

To find the <em>x-</em>intercepts of the function, set the function equal to 0 and solve for <em>x: </em>

<em />0=-16x^2+60x+16<em />

We can divide both sides by negative four:

0=4x^2-15x-4

Factor:

0=(4x+1)(x-4)

Zero Product Property:

x-4=0\text{ or } 4x+1=0

Solve for each case:

\displaystyle x=-\frac{1}{4}\text{ or }x=4

Hence, our zeros are:

\displaystyle \left(-\frac{1}{4}, 0\right)\text{ and } \left(4, 0\right)

Part B)

Note that the leading coefficient of our function is negative.

So, our function will be concave down.

Hence, our vertex will be the maximum.

The vertex is given by:

\displaystyle \left(-\frac{b}{2a}, f\left(-\frac{b}{2a}\right)\right)

In this case, <em>a </em>= -16, <em>b</em> = 60, and <em>c</em> = 16.

Find the <em>x-</em>coordinate of the vertex:

\displaystyle x=-\frac{(60)}{2(-16)}=\frac{15}{8}=1.875

Substitute this back into the function to find the <em>y-</em>coordinate:

f(1.875)=-16(1.875)^2+60(1.875)+16=72.25

Hence, our vertex is:

(1.875, 72.25)

Part C)

Since we already determined the zeros and the vertex, we can plot the two zeros and the vertex and draw a curve between the three points.

The graph is shown below. Again, to do this by hand, simply plot the three points and connect them with a parabola. If necessary, we can also find the <em>y-</em>intercept.

You might be interested in
15b^2+20y^3<br> Find the greatest common factor
Andrew [12]

Answer:

Hope this helps!

Step-by-step explanation:

The GCF is 5

8 0
3 years ago
5÷5/6= please answer my question
solong [7]
Just like that? Any question, inbox. :p 

6 0
3 years ago
A typical snake bite delivers 0.0045 grams of venom. Maria and Tammy were asked to write this number in scientific notation. The
Stolb23 [73]

Answer:

Maria

Step-by-step explanation:

A typical snake bite delivers 0.0045 grams of venom.

Maria wrote it in scientific notation as 4.5\times 10^{-3}

Tammy wrote it in scientific notation as 4.5\times 10^{3}

Any number can be written in the form of scientific notation as follows :

N=a\times 10^b (a is real no and b is integer)

The given no is 0.0045.

There are 2 zeroes before 4. Also the decimal is there before 2 zeroes.

0.0045=\dfrac{45}{10000}\\\\=\dfrac{45}{10}\times \dfrac{1}{1000}\\\\=4.5\times 10^{-3}

Hence, Maria is correct.

6 0
3 years ago
A study of 250 households in Cedar Bluff showed that a household produced an average of 4 pounds of garbage per day. What is the
Juli2301 [7.4K]

Answer:

Step-by-step explanation:

Given that a study of 250 households in Cedar Bluff showed that a household produced an average of 4 pounds of garbage per day.

Here a study of only 250 were made to assess about the entire households in Cedar Bluff

Hence the population of interest in this study is the entire households in Cedar Bluff.

The sample is the 250 households in Cedar Bluff which were studied

The objective was to study the sample and from that information to assess about the population.

6 0
3 years ago
2(7x-34) = 22<br> Find X<br> Brainliest
Zepler [3.9K]

Answer: x = 45/7

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • Solve the system, please show each step.
    5·2 answers
  • Write 10 ^ 10 * 10 ^ 0 with a power of 10 with a single exponent using the appropriate exponent rule explain or show your reason
    9·2 answers
  • Help please!!!!!!!!!!!!!!!!!!
    12·2 answers
  • The letters that form probability are placed in a bowl, what is the probability of choosing a letter b replacing it and the draw
    12·1 answer
  • The side of a square flower bed is 1m 80cm. It is enlarged by digging a strip 20cm wide all around it. find. a) the area of the
    10·1 answer
  • Help appreciated, thanks so much!
    15·1 answer
  • 1. Stacy's mom is baking treats for Stacy's birthday party. She has 9 eggs to
    15·1 answer
  • Solve <img src="https://tex.z-dn.net/?f=6x%5E%7B2%7D%20-42%3D0" id="TexFormula1" title="6x^{2} -42=0" alt="6x^{2} -42=0" align="
    8·1 answer
  • -86, 88, 33, 55, 93, 6, 88, 81, 5, -33, 33, -33
    6·1 answer
  • Segment AB has point A located at (4,2). If the distance from A to B is 3 units, which of the following could be used to calcula
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!