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
Ahat [919]
3 years ago
12

The function f(x) = –x2 − 2x + 15 is shown on the graph. What are the domain and range of the function?

Mathematics
1 answer:
Makovka662 [10]3 years ago
4 0
The function is a parabola which opens downwards.
-x^2 - 2x + 15
-(x^2 + 2x) + 15
= -[(x + 1)^2 - 1 ]+ 15
= -(x + 1)^2 + 16

The domain is all real numbers and the range is {y|y <= 16}
Its the second choice.


You might be interested in
Suppose 12% of students chose to study Spanish their freshman year, and that meant that there were 15 such students. How many st
Allisa [31]

Answer:

  110

Step-by-step explanation:

If 12% studied Spanish, then 88% did not. The ratio of those who did not to those who did is ...

  88 : 12 = 22 : 3

Then the number of students who did not study Spanish is ...

   (22/3)×15 = 110 . . . . did not study Spanish

7 0
2 years ago
Solve this system of equations. x + y + z = 6 3x + 3y + 3z = 18 -2x − 2y − 2z = -12
natita [175]
We know that

A system of three linear equations can have one solution, an infinite number of solutions, or no solution. Systems of equations can be classified by the number of solutions.

If a system has at least one solution, it is said to be consistent 

If a consistent system has an infinite number of solutions, it is dependent. When you graph the equations, both equations represent the same line

in this problem we have

<span>x + y + z = 6---------> equation 1
</span><span>3x + 3y + 3z = 18------> equation 2
</span><span>-2x − 2y − 2z = -12--------> equation 3

if in the equation 2 divides by 3 both sides
</span>3x + 3y + 3z = 18-------> x + y + z = 6------> equation 2 is equal to equation 1

if in the equation 3 divides by -2 both sides
-2x − 2y − 2z = -12-------> x + y + z = 6------> equation 3 is equal to equation 1

so
equation 1, equation 2 and equation 3 are the same

therefore

<span>the system of equations has infinite solutions
</span>Is a <span>Consistent and Dependent System</span><span>


</span>
6 0
2 years ago
Carlos and Ethan noticed that both proportional relationships and linear functions form a straight line when graphed. Carlos cla
Andrews [41]

Answer:

B. Ethan is correct because all proportional relationships form a straight line and go through the origin and linear functions are linear, but they don’t all go through the origin so they are not always proportional.

Step-by-step explanation:

So a proportional relationship is just a special kind of linear relationship, i.e., all proportional relationships are linear relationships (although not all linear relationships are proportional).

8 0
3 years ago
Rewrite the product as a sum: 10cos(5x)sin(10x)
mote1985 [20]

Answer:

10cos(5x)sin(10x) =  5[sin (15x) + sin (5x)]

Step-by-step explanation:

In this question, we are tasked with writing the product as a sum.

To do this, we shall be using the sum to product formula below;

cosαsinβ = 1/2[ sin(α + β) - sin(α - β)]

From the question, we can say α= 5x and β= 10x

Plugging these values into the equation, we have

10cos(5x)sin(10x) = (10) × 1/2[sin (5x + 10x) - sin(5x - 10x)]

= 5[sin (15x) - sin (-5x)]

We apply odd identity i.e sin(-x) = -sinx

Thus applying same to sin(-5x)

sin(-5x) = -sin(5x)

Thus;

5[sin (15x) - sin (-5x)] = 5[sin (15x) -(-sin(5x))]

= 5[sin (15x) + sin (5x)]

Hence,  10cos(5x)sin(10x) =  5[sin (15x) + sin (5x)]

8 0
3 years ago
These two trapezoids are similar What is the correct way to complete the similarity statement?
pentagon [3]

Option A:

\mathrm{ABCD} \sim \mathrm{GFHE}

Solution:

ABCD and EGFH are two trapezoids.

To determine the correct way to tell the two trapezoids are similar.

Option A: \mathrm{ABCD} \sim \mathrm{GFHE}

AB = GF (side)

BC = FH (side)

CD = HE (side)

DA = EG (side)

So, \mathrm{ABCD} \sim \mathrm{GFHE} is the correct way to complete the statement.

Option B: \mathrm{ABCD} \sim \mathrm{EGFH}

In the given image length of AB ≠ EG.

So, \mathrm{ABCD} \sim \mathrm{EGFH} is the not the correct way to complete the statement.

Option C: \mathrm{ABCD} \sim \mathrm{FHEG}

In the given image length of AB ≠ FH.

So, \mathrm{ABCD} \sim \mathrm{FHEG} is the not the correct way to complete the statement.

Option D: \mathrm{ABCD} \sim \mathrm{HEGF}

In the given image length of AB ≠ HE.

So, \mathrm{ABCD} \sim \mathrm{HEGF} is the not the correct way to complete the statement.

Hence, \mathrm{ABCD} \sim \mathrm{GFHE} is the correct way to complete the statement.

3 0
3 years ago
Other questions:
  • -3/4 - 1/5 divide by 2/5 = ? <br> can you explain how to work this problem also
    15·1 answer
  • What’s the end behavior of g(x)=(5^x-3)+2.5
    7·1 answer
  • Hours Spent at Water Park A 2-column table with 4 rows titled Hours Spent at Water Park. Column 1 is labeled Hours with entries
    9·2 answers
  • What is the surface area of a square prism with a base side length of 9 cm and a slant height of 7cm.
    15·1 answer
  • I need to know what’s the answer.
    7·1 answer
  • Chrissy ate 10% of the Christmas cookies. If she ate 6 cookies, how many Christmas cookies were left?
    10·1 answer
  • For the science project, Amber studied different plant fertilizers to see which one provided the most growth. Which list shows t
    13·1 answer
  • What go in the empty spots
    15·1 answer
  • Is (-2 , 3) a solution of the graphed inequality?
    11·1 answer
  • Subtract.<br><br> −139.6−140.03<br><br> Enter your answer in the box.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!