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
pychu [463]
2 years ago
8

Using F(x) = 5x^2- 3, what is f(-3)? A. 42 B. -3 C.-48 D. -42

Mathematics
1 answer:
Gnom [1K]2 years ago
8 0

Answer: 42

Step-by-step explanation

Switch x out with 3

using Pemdas do the exponent first

3^2 is 9

then multiply

5*9= 45

then subtract

45-3=42

You might be interested in
The equation to model Exponential Growth is:
abruzzese [7]

Your salary in x years is modeled an the exponential growth

The equation that determines your salary in x years is y = 45000(1.05)^x

<h3>How to model the salary growth?</h3>

The model of the exponential growth is given as:

y = a(1 + r)^x

From the question, we have:

Initial salary, a = 45000

Raise, r = 5%

So, the equation becomes

y = 45000(1 + 5%)^x

Evaluate the sum

y = 45000(1.05)^x

Hence, the equation that determines your salary in x years is y = 45000(1.05)^x

Read more about exponential functions at:

brainly.com/question/11464095

5 0
1 year ago
Consider the following proposed proof by contradiction that for all positive integers n, 3n &gt; 2.
laila [671]

Answer:

The proof contains a simple direct proof, wrapped inside the unnecessary logical packaging of a proof by contradiction framework.

Step-by-step explanation:

The proof is rigourous and well written, so we discard the second answer.

This is not a fake proof by contradiction: it does not have any logical fallacies (circular arguments) or additional assumptions, like, for example, the "proof" of "All the horses are the same color". It is factually correct, but it can be rewritten as a direct proof.

A meaningful proof by contradiction depends strongly on the assumption that the statement to prove is false. In this argument, we only this assumption once, thus it is innecessary. Other proofs by contradiction, like the proof of "The square root of 2 is irrational" or Euclid's proof of the infinitude of primes, develop a longer argument based on the new assumption, but this proof doesn't.

To rewrite this without the superfluous framework, erase the parts "Suppose that the statement is false" and "The fact that the statement is true contradicts the assumption that the statement is false. Thus, the assumption that the statement was false must have been false. Thus, the statement is true."

7 0
3 years ago
Select the correct answer. If a coin is flipped 10 times, what is the probability that it will show all heads or all tails?
stepladder [879]
<span>A). (1/2) The Probability is the same for both heads and tails because there are only two sides.</span>
8 0
3 years ago
Read 2 more answers
There are seven cars parked in a row exactly the same distance from each other the first car is 31 inches from the second car th
MakcuM [25]

Answer:

the distance of the 3rd car from the 7th car is

217 inch

8 0
2 years ago
Find the missing angle
RoseWind [281]
164 or sum like that don’t take this as a definite answer cause I am not sure
4 0
3 years ago
Other questions:
  • The sales tax rate in a certain state is 8%. How much would you pay in total for a taxable item that costs $25.25?
    5·2 answers
  • Alan bought a video game for $42 which was 25% off the original price what was the original price?
    5·1 answer
  • What is the equation of the axis of symmetry
    5·1 answer
  • Will odd numbers when added always make even numbers
    15·1 answer
  • Refer to the equation 2x − 6y = 12.
    10·1 answer
  • Find the value of x and z<br><br> 20 points lol
    10·1 answer
  • You have sample data that leads you to believe that the average high temperature in Oklahoma City is 92°F.
    14·2 answers
  • (2x+3) what is the value of x​
    9·1 answer
  • Look at the image for the problem
    12·2 answers
  • What is the slope intercept ?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!