All categories

3 years ago

Which of the following is not a case of direct variation

Mathematics

1 answer:

Gelneren [198K]3 years ago

5 0

Answer:

I can't understand.. can you add pictures also

You might be interested in

A radioactive substance decays at a continuous rate of 12% per year, and 90 mg of the substance is present in the year 2000. (a)

Alla [95]

Answer:

A(t) = 90e^0.12t ;

299 mg

Step-by-step explanation:

General Continous growth rate equation :

A = Pe^rt

A = amount present, t years after year of initial amount.

Here,

P = 90 mg, amount in year 2000

r = rate = 12% = 0.12

t = years after 2000

Therefore,

A is written as ;

A(t) = 90e^0.12t

Amount present in year 2010 ;

t = 2010 - 2000 = 10

A(10) = 90e^0.12(10)

A(10) = 90 * e^1.2

= 90 * 3.3201169

= 298.81052

= 299 mg

5 0

2 years ago

Write the following integers in a decreasing order. 1. 0,7,-3,9,-132,36

Elan Coil [88]

ANSWER:
36 > 9 > 7 > 0 > -3 > -132

Hope it helps u!

6 0

3 years ago

Read 2 more answers

(20 POINTS AND BRAINLIEST ANSWER!!!)

alisha [4.7K]

PICTURE1: They are both 45

PICTURE2: 810

8 0

3 years ago

Given: y = 3x - 4. what is the x-intercept? (0, -4) (0, 4/3) (4/3, 0)

ankoles [38]

X intercept is 4/3 because you plug zeros in for y to find the y intercept

4 0

3 years ago

Y-8= - * - 4 y=-* 4 (3,-5) no solution an infinite number of solutions

muminat

Given:

The system of equation is

$y-8=-\dfrac{1}{3}x-4$

$y=-\dfrac{1}{3}x-4$

To find:

The solution of given system of equations.

Solution:

The slope intercept form of a line is

$y=mx+b$

Where, m is slope and b is y-intercept.

Write the given equation in slope intercept form.

The first equation is

$y-8=-\dfrac{1}{3}x-4$

$y=-\dfrac{1}{3}x-4+8$

$y=-\dfrac{1}{3}x+4$ ...(i)

Here, slope is $-\dfrac{1}{3}$ and y-intercept is 4.

The second equation is

$y=-\dfrac{1}{3}x-4$ ...(i)

Here, slope is $-\dfrac{1}{3}$ and y-intercept is -4.

Since the slopes of both lines are same but the y-intercepts are different, therefore the given equations represent parallel lines.

Parallel lines never intersect each other. So, the given system of equation has no solution.

Hence, the correct option is B.

3 0

3 years ago