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
Alexxx [7]
3 years ago
7

If y = -x² + 14x + 7 , then x = 10 is a counterexample for which conjecture?

Mathematics
1 answer:
Misha Larkins [42]3 years ago
6 0

Answer:

The correct answer is B

Step-by-step explanation:

If we plug in x=10 to the equation, we get y=47

Since y is positive, A is not an counterexample

Since y is a function of x, C is not an counterexample

Since the graph of y is a parabola, D is not an counterexample

Hope this helped and mark as brainliest!

You might be interested in
Its #1 and this is for algebra 2
4vir4ik [10]
Hello! Hmm. Let’s see. I think it has to be 100x + 60y <= 600. The x variable represents the fast machine suits and the y variable represents the slow machine wet suits. You wrote the greater than or equal to sign, which is not correct. The maximum means no more than, which would mean the less than or equal to sign. The sign you wrote would mean at least that amount or more.
5 0
3 years ago
4⋅(4+(26⋅2−3))<br><br> A.48<br> B.24<br> C.12<br> D.2
JulijaS [17]
First use PEMDAS so 26x2=52
52-3=49
4+49=53
53x4
8 0
3 years ago
An escalator lifts people to the second floor of a building 25 feet above the first floor. The escalator rises at a 30 degree an
ch4aika [34]

9514 1404 393

Answer:

  50 ft

Step-by-step explanation:

The side lengths in a 30-60-90 triangle have the ratios 1 : √3 : 2. The longest side is 2 times the length of the shortest side.

In this geometry, that means the length of the escalator is 2 times its height, so is ...

  x = 2(25 ft)

  x = 50 ft . . . . . distance a person travels

7 0
3 years ago
The function w=30-3/4n represents the weight w in pounds of the papers in tyrones newspaper delivery bag after he delivers n new
adoni [48]

Answer:

domain (−∞,∞)

range (−∞,∞)

n = 40 and it refers to the fact that after delivering 40 newspapers, there will be no paper left in the bag

Step-by-step explanation:

To find the zero, we equate the linear equation to zero

w = 30 - 3n/4

3n/4 = 30

3n = 120

n = 120/3

n = 40

What this mean in this context is that the the bag becomes empty after he has delivered 40 newspapers or we can say that the maximum number of papers the bag can take is 40

The range refers to the number on the y-axis

Here the range is (−∞,∞)

The domain refers to the x axis values

We have (−∞,∞)

4 0
3 years ago
Fill in the space to complete to equality:<br><br> 3v-v²=v(__)
levacccp [35]

Answer:

3v-v² = v(3-v)

Step-by-step explanation:

Use distributive property on the right side of the equality.

6 0
3 years ago
Other questions:
  • PLEASE ANSWER PICTURE SHOWNNN
    11·2 answers
  • Ann will run less than 26 miles this week. So far, she has run 15 miles. What are the possible numbers of additional miles she w
    7·1 answer
  • Can you simplify (rt(2)+rt(6))/2?
    5·1 answer
  • Explain how to determine if two figures are congruent.
    10·2 answers
  • Help please I’m new to this not really sure how it works but I need help with math!
    7·1 answer
  • It is estimated that there are 828 motor vehicles in the US for every 1,000 people. If the number of motor vehicles in the US is
    15·1 answer
  • A lunch bill costs $40. If you want to leave a 15% tip, how much money should you leave for the total bill?
    5·1 answer
  • 36
    7·1 answer
  • Archilles ordered a pizza with 16 slices every hour he ate half of the remaining slice
    6·1 answer
  • Solve for x using the diagram below<br> Brainliest
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!