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
tatuchka [14]
3 years ago
7

Find a so that the point (-1, 2) is on the graph of f(x)=ax^2+5.

Mathematics
1 answer:
Gnesinka [82]3 years ago
4 0
We are asked to determine the value of a such that the function f(x) = ax^2 + 5 is fit for the point given (-1,2). In this case, we substitute 2 to y and -1 to x. The result is then 2 = a*(-1)^2 + 5 ; 2 = a + 5; a is then equal to -3
You might be interested in
when juggling a ball travels in a complete circle every 2 seconds. how many circles does it make in a minute
andrew11 [14]

Answer: It makes 30 circles in a minute

Step-by-step explanation:

Cirle every 2 seconds

A minute is 60 seconds

So you divide those to get your answer

60 divided by 2= 30

3 0
2 years ago
Read 2 more answers
What is the value of m in the equation 1/2m - 3/4n = 16 ,
amid [387]

m = 32 & n = 0

____________

____________

7 0
2 years ago
A May 2000 Gallup poll found that 38% of the people in a random sample of 1,012 adult Americans said that they
Alex777 [14]

Answer:

10.

x P(X)

0 0.238

1 0.438

2 0.269

3 0.055

11.

0.707

There is 70.7% chance that at least one but at most two adults in the sample believes in the ghost

12.

1.14≅1

There will be one adult out of three we expect to believe in the ghost

Step-by-step explanation:

The probability distribution is constructed using binomial distribution.

We have to construct the probability distribution of the number adults believe in ghosts out of three adults. so,

x=0,1,2,3

n=3

p=probability of adults believe in ghosts=0.38

The binomial distribution formula

nCxp^xq^n-x=3cx0.38^x0.62^3-x

is computed for x=0,1,2,3 and the results depicts the probability distribution of the number adults believe in ghosts out of three adults.

x P(X)

0 0.238

1 0.438

2 0.269

3 0.055

11.

P(at least one but at most two adults in the sample believes in the ghost )= P(x=1)+P(x=2)=0.437+0.269=0.707

P(at least one but at most two adults in the sample believes in the ghost )=70.7%

12. E(x)=n*p

here n=3 adults and p=0.38

E(x)=3*0.38=1.14

so we expect one adult out of three will believe in the ghosts.

4 0
3 years ago
The domain of f(x)= (2/3)^x is all negative numbers true or false
Salsk061 [2.6K]
False, probably. cause (2/3)^1 is defined
4 0
3 years ago
Is this correct? If not, which one is it? Thanks in advance!
Lisa [10]

Answer:

its the the second one not the first one



7 0
3 years ago
Other questions:
  • Li’s garden is shaped like a rectangle. The area of the garden is 232 meters. If the length is 8 meters, what is the perimeter?
    15·1 answer
  • PLEASE HELP ASAP
    7·1 answer
  • PLZZZZZZ HLPPPPP MEEEEEEE how could you find the y coordinate of the midpoint of a vertical line segment with endpoints at (0, 0
    15·1 answer
  • The points (3,10) and (5,t) fall on a line with a slope of -4 what t value
    14·1 answer
  • I need help ASAP plzzzzz P = 2a + b for a.
    8·1 answer
  • Someone please explain this​
    12·2 answers
  • Which expression represents the total volume of the pictures shown if each cube has a side length of e?
    12·1 answer
  • An in-ground pool is 34 feet long and x inches wide. Its brick walkway is 4 feet wide around the pool. What expression represent
    11·1 answer
  • Find standard deviation 22,25 30 35 40 45 48​
    7·1 answer
  • Find the surface area of the prism. 16cm 12cm 10cm 20cm
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!