Ask question

Ask question

All categories

4 years ago

7

Find all solutions of the equation in the interval [0, 2π). (enter your answers as a comma-separated list. if there is no soluti

on, enter no solution.) 6 cos3 x = 6 cos x

1 answer:

lawyer [7]4 years ago

5 0

0, π/2, π, 3π/2
__________

You might be interested in

100 cubed as a power of 10

Savatey [412]

Answer:

100

Step-by-step explanation:

10^2 is 100 therefore it is 100

6 0

2 years ago

What is vaule of y when x=4'5

Degger [83]

Answer:

$y = 2.096$ or $y = \frac{2\sqrt5+6}{5}}$

Step-by-step explanation:

Given

$y = \frac{4}{x} + \sqrt x + 0.2 - 5x$

$x = \frac{4}{5}$

Required

Find y

$y = \frac{4}{x} + \sqrt x + 0.2 - 5x$

Substitute $x = \frac{4}{5}$

$y = \frac{4}{4/5} + \sqrt{4/5} + 0.2 - 5 * 4/5$

$y = 5 + \sqrt{4/5} + 0.2 - 4$

Collect like terms

$y = \sqrt{4/5} + 5 + 0.2 - 4$

$y = \sqrt{\frac{4}{5}} + 1.2$

Split the surd

$y = \frac{\sqrt4}{\sqrt5}} + 1.2$

$y = \frac{2}{\sqrt5}} + 1.2$

Rationalize

$y = \frac{2\sqrt5}{\sqrt5*\sqrt5}} + 1.2$

$y = \frac{2\sqrt5}{5}} + 1.2$

Take LCM and add

$y = \frac{2\sqrt5+1.2*5}{5}}$

$y = \frac{2\sqrt5+6}{5}}$

or solve as:

$y = \frac{2*2.24+6}{5}}$

$y = \frac{10.48}{5}$

$y = 2.096$

7 0

3 years ago

If 1/2 gallon of paint cover 1/4 of a wall then how much paint is needed to cover an entire wall?

slavikrds [6]

paint is needed to cover an entire wall : 2

if 1/2 gallon of paint cover 1/4 of a wall => 1 wall = (1/2)/(1/4) =2

4 0

3 years ago

Read 2 more answers

Guys pls help me!!!!!!

Mekhanik [1.2K]

Answer:

x=79

Step-by-step explanation:

180-101=79

Jesus loves you!

6 0

2 years ago

Read 2 more answers

(45 1/3 + 6 1/3)+38 2/3 ?

Marizza181 [45]

51 2/3+38 2/3

90 11/3

6 0

3 years ago

Read 2 more answers