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If f(x) = 2x - 9, which of the following are correct? Select all that apply. f(-1) = -11 f(2) = 5 f(3) = -3 f(0) = -9 f(-3) = 15

Yuri [45]

f(-1) = -11 and f(3) = -3 . these functions are true .

What does a math function mean?

A relationship between a group of inputs and one output each is referred to as a function.
A function is an association between inputs in which each input is connected to precisely one output.
A domain, codomain, or range exists for every function. f(x), where x is the input, is a common way to refer to a function.
In mathematics, a function is an expression, rule, or law that establishes the relationship between two variables (the dependent variable).

given function f(x) = 2x - 9

f(-1) = -11 ⇒ x = -1 put in function

f( -1 ) = 2 * -1 - 9 ⇒ - 11

f(2) = 5 ⇒ x = 2 put in function

f( 2 ) = 2 * 5 - 9 = 1

f(3) = -3 ⇒ x = 3 put in function

f ( 3 ) = 2 * 3 - 9 = -3

f(-3) = 15 ⇒ x = -3 put in function

f( -3) = 2 * -3 - 9 = - 15

Learn more about function

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3 0

1 year ago

Yeah I don’t get this

umka2103 [35]

using pythagorean theorem

a^2 + b^2 = c^2

(12x)^2 + (16x)^2 = 10^2

square each term

144x^2 + 256x^2 = 100

combine like terms

400 x^2 = 100

divide by 400 on each side

x^2 = 1/4

take the square root on each side

x = 1/2

Answer: x=1/2

8 0

3 years ago

84 is 30% of what number? 2.8 25.2 280 2520

frez [133]

The right answer is 280

please see the attached picture for full solution

Hope it helps

Good luck on your assignment

4 0

2 years ago

Read 2 more answers

Construct the discrete probability distribution for the random variable described. Express the probabilities as simplified fract

lisov135 [29]

Answer:

$P(X = 0) = 0.03125$

$P(X = 1) = 0.15625$

$P(X = 2) = 0.3125$

$P(X = 3) = 0.3125$

$P(X = 4) = 0.15625$

$P(X = 5) = 0.03125$

Step-by-step explanation:

For each toss, there are only two possible outcomes. Either it is tails, or it is not. The probability of a toss resulting in tails is independent of any other toss, which means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$