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
Tom [10]
3 years ago
5

Can someone help me and tell me the steps plzz​

Mathematics
1 answer:
adell [148]3 years ago
5 0

Answer:

A

Step-by-step explanation:

f(x) = 7x² - 15x + 2

A) f(1) = 7*1² - 15*1 +2 = - 6

f(1.5) = 7*(1.5)² -15*1.5 + 2 = - 4.75

B) f(2.2) = 7*(2.2)²-15*(2.2)+2 = 2.28

C) f(1) = 7*1² - 15*1 +2 = - 6

f(1) = 7*2² - 15*2 +2 = 0

D) not for all real numbers because we already have

f(2.2) = 7*(2.2)²-15*(2.2)+2 = 2.28 that is positive.

You might be interested in
Larry says all
MaRussiya [10]

Answer:

larry is incorrect because the number 2 is not a composite number, although numbers 12, 22, 32, 42, 52, 62, 72, 82, and 92 are composite, 2 isn't

6 0
3 years ago
If the range of the function f(x) = 7x – 2.7 is {14.1, 30.9, 41.4, 58.9, 68}, what is its domain?
Drupady [299]

domain is {2.4, 4.8, 6.3, 8.8, 10.1 }

For domain, equate f(x) to each value in the range and solve for x

7x - 2.7 = 14.1 ⇒ x = \frac{x14.1 + 2.7}{7} = 2.4

7x - 2.7 = 30.9 ⇒ x = \frac{30.9 + 2.7}{7} = 4.8

7x - 2.7 = 41.4 ⇒ x = \frac{41.4 + 2.7}{7} = 6.3

7x - 2.7 = 58.9 ⇒ x = \frac{58.9 + 2.7}{7} = 8.8

7x - 2.7 = 68 ⇒ x = \frac{68 + 2.7}{7} = 10.1


7 0
3 years ago
Could mud wrestling be the cause of a rash contracted by Washington State University students in the spring of 1992? Physicians
Daniel [21]
Thank you for posting your question here at brainly. Feel free to ask more questions.   
<span>
The best and most correct answer among the choices provided by the question is </span><span>A. Between 0.05 and 0.01 </span> .    
      <span>
Hope my answer would be a great help for you.  </span>
7 0
3 years ago
Read 2 more answers
What is 1/2 times 6?
son4ous [18]
1/2 times 6 = 1/2 * 6
so in order to make this multiplication you have to turn 6 to a fraction, 6 is equal to 6/1
so , the way to multiply them is multiply the top with the top and it will be the top in the answer and the exact same with the bottoms

6*1= 6
2*1=2 

so the fraction is 6/2, since a fraction is basicly a division

6/2 = 3

so the answer to your question is 3

i hope i helped you
6 0
3 years ago
Read 2 more answers
What is the area of ​​the triangle?
liubo4ka [24]

Answer:

area of triangle : 1/2 x length x widht

8 0
3 years ago
Other questions:
  • "the sum of the digits of a two-digit number is 13. reversing the digits produces a number that is 9 less than the original numb
    15·1 answer
  • NEED HELP ASAP PLEASE
    9·2 answers
  • Write an expression that shows how you can multiply 9×475 using expanded form and distributive form
    13·1 answer
  • ONLY ANSWER IF YOU KNOW IT PLS ILL GIVE THE CORRECT BRAINLIEST!
    13·1 answer
  • What is the definition of the p-value? Group of answer choices the probability that we would see a test statistic this extreme o
    5·1 answer
  • The heights of all adult males in Croatia are approximately normally distributed with a mean of 180 cm and a standard deviation
    8·1 answer
  • Does anyone play roblo if so friend me and i will tell you my user name :)
    8·1 answer
  • Seven and two-thousandths is written as​
    12·2 answers
  • Use the spinner to find the theoretical probability of the event. Write your answer as a fraction or a percent rounded to the ne
    7·1 answer
  • Please take a look at the picture. Please write your answer with an explanation.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!