All categories

4 years ago

True or false: f(x) is a function. f(x)

Mathematics

1 answer:

Kaylis [27]4 years ago

7 0

Answer:

yes it is

Step-by-step explanation:

f(x) or g(x) are functions

You might be interested in

A sample of n = 9 college students is used to evaluate the effectiveness of a new Study Skills Workshop. Each student’s grade po

Vinil7 [7]

Answer:

80% Confidence interval: (0.4603,0.7397)

Step-by-step explanation:

We are given the following in the question:

Sample mean, $\bar{x}$ = MD = 0.60 points

Sample size, n = 9

Sample variance = 0.09

Sample standard Deviation =

$=\sqrt{\text{Sample Variance}} = \sqrt{0.09} = 0.3$

80% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 8 and}~\alpha_{0.20} = \pm 1.397$

$0.60 \pm 1.397(\frac{0.3}{\sqrt{9}} ) = 0.60 \pm 0.1397 = (0.4603,0.7397)$

8 0

4 years ago

20% of 150 is what number?

Tatiana [17]

The answer is 30 yahhhhhhhhhhh

6 0

3 years ago

A circle with a centre 0, has an equation x2 + y2 = 25

GaryK [48]

The linear equation of the tangent at point A is given by:

$y = \frac{-4x + 25}{3}$

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.

b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

In this problem, to find the slope, we need to find the derivative at (4,3), using implicit differentiation. Hence:

$2x\frac{dx}{dx} + 2y\frac{dy}{dx} = 0$

$\frac{dy}{dx} = -\frac{x}{y}$

$\frac{dy}{dx} = -\frac{4}{3}$

Then:

$y = -\frac{4}{3}x + b$

We use point (4,3) to find b, hence:

$y = -\frac{4}{3}x + b$

$3 = -\frac{16}{3} + b$

$b = \frac{25}{3}$

Hence, the equation is:

$y = \frac{-4x + 25}{3}$

More can be learned about linear equations at brainly.com/question/24808124

#SPJ1

7 0

2 years ago

13x + 14y - 12 = 14x + 15y + 13<br> need help on this and the steps shown

xxMikexx [17]

Answer:

Step-by-step explanation:

$13x + 14y - 12 = 14x + 15y + 13$

Collect like terms

$14y-15y=14x-13x+13+12$

Simplify

$-y =x +25$

Multiply through by -1(to reverse the inequality)

$-1(-y=x+25)\\\\y =-x-25$

8 0

3 years ago

Read 2 more answers

Mr. James borrows money from the bank for a new car. He borrows $10,000 at 3% for 5 years. How much will he pay in interest?

ozzi

Answer:

$1,500

Step-by-step explanation:

I = PRT

I = 10,000 × .03 x 5

I = $1,500

3 0

4 years ago