MATHEMATICS HIGH SCHOOL

When f(x)= -3,what is x

Answers

Answer 1

Answer:

The value of x is, -3.

What does the X in a function mean?

A function defines one variable in terms of another.
The statement "y is a function of x" (denoted y = y(x)) means that y varies according to whatever value x takes on.
A causal relationship is often implied (i.e. "x causes y"), but does not *necessarily* exist.

What is the value for X?

Generally, the algebraic expression should be any one of the forms such as addition, subtraction, multiplication and division.
To find the value of x, bring the variable to the left side and bring all the remaining values to the right side.
Simplify the values to find the result.

How are the functions y x?

The phrase "y is a function of x" means that the value of y depends upon the value of x, so: y can be written in terms of x (e.g. y = 3x ).
If f(x) = 3x, and y is a function of x (i.e. y = f(x) ), then the value of y when x is 4 is f(4), which is found by replacing x"s by 4"s .

Learn more about functions here:

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Answer 2

Answer:

Answer:

-3

Step-by-step explanation:

Edu 2020

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Solve this equation: –9h – 6 + 12h + 40 = 22. A. h = 24 B. h = – 4 C. h = 4 D. h = –4/7

Answers

In the equation: -9h - 6 + 12h + 40 = 22, collecting like terms gives: -9h + 12h = 22 + 6 - 40 which gives 3h = -12. They we divide both sides of the equation by 3 to get 3h / 3 = -12 / 3 which gives h = -4. Therefore, the solution to the given equation is h = -4 (option B).

Evaluate cos(tan^-1 0)

Answers

cos (tan^-1 0)
cos ( 0 )
1

Solve for m.

m/4 - 6 = 10

(SHOW YOUR WORK)

Answers

Answer:

The answer to your question is m = 64

Step-by-step explanation:

Equation

$(m)/(4) - 6 = 10$

Process

1.- Add 6 to both sides

$(m)/(4) - 6 + 6 = 10 + 6$

2.- Simplify

$(m)/(4) = 16$

3.- Multiply both sides by 4

$4(m)/(4) = 16(4)$

4.- Simplify and result

m = 64

The times of all 15 year olds who run a certain race are approximately normally distributed with a given mean Mu = 18 sec and standard deviation Sigma = 1. 2 sec. What percentage of the runners have times less than 14. 4 sec?.

Answers

Question

The times of all 15 year old who run a certain race are approximately normally distributed with a given mean Mu = 18 sec and standard deviation Sigma = 1. 2 sec. What percentage of the runners have times less than 14. 4 sec?.

Answer:

A. 0.15%

Step-by-step explanation:

The times of all 15 year old who run a certain race are approximately normally distributed with a given mean as 18 sec and standard deviation as 1.2 sec.

We know that,

where,

X = raw score = 14.4

μ = mean = 18

σ = standard deviation = 1.2

Putting the values,

Finding the the probability from z score table, we get

Answer:

Step-by-step explanation:

I am confused on numbers 25 and 29, the instructions are at the top.

Answers

#25 is fairly simple. Plug in -4 and 3 into the equation, and the extraneous root will be the one that does not work.
$√(12-(-4)) = √(16) = \frac{+}{}4$
Extraneous root in this case is positive four since +4≠-4
$√(12-3) = √(9) = \frac{+}{}3$
In this case it's negative 3, since -3≠3

#29 can be turned into a quadratic equation.
$x= √(2x+3)$
Square both sides to get
$x^(2)=2x+3$
Then bring the 2x+3 to the other side, setting the quadratic equal to zero.
$x^(2)-2x-3=0$
Factor to find that it's equivalent to
(x-3)(x+1)=0
Therefore x is equal to positive 3 and negative 1. Plug both back into the original equation. Whichever does not work is the extraneous root, and the answer is the one that does.
$x= √(2x+3)$
$3= √(2(3)+3)$
$3= √(9)$
Extraneous root would be negative 3.

$-1= √(2(-1)+3)$
$-1= √(1)$
Extraneous root would be positive 1.

Your answers are positive 3 and negative 1.
Extraneous roots are negative 3 and positive 1.

What is the rule for the function shown in the table? x|-1|0|1|2
y|-2|1|4|7

A. y = 1/3x + 1
B. y = 3x +1
C. y = 1/3x
D. y = 1/2x + 1

Answers

It's a linear function.
$y=mx+b \n \nx_1=-1 \n y_1=-2 \n \n x_2=0 \n y_2=1 \n \nm=(y_2-y_1)/(x_2-x_1)=\fac{1-(-2)}{0-(-1)}=(1+2)/(0+1)=(3)/(1)=3 \n \ny=3x+b \n(0,1) \n1=3 * 0+b \n1=0+b \nb=1 \n \n\boxed{y=3x+1} \Leftarrow \hbox{answer C}$

Answer:

The answer is B: y = 3x + 1

Step-by-step explanation:

Look at the response above this to see the explanation!

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