1 year ago

The value 3pie/16 is a solution for the equation 2cos^2(4x)-1=0 true or false

Mathematics

1 answer:

SSSSS [86.1K]1 year ago

3 0

The answer is true i had the same question

You might be interested in

Lisa and Lori each dried 1/3 of the glasses. What fraction of the glasses

Yuki888 [10]

3/3-1/3= 2/3 of the glasses

6 0

2 years ago

The sum of 9 and a number is twice a number plus 14. Write an equation.

Olin [163]

Answer:

9+x = 2y+14

Step-by-step explanation:

It says 9 plus a number, so plug in x for 'a number', and it says 'is twice a number plus 14'. Plug in '=' for is another variable for 'a number', and last but not least, just put +14 for plus 14

6 0

2 years ago

A number is more than 9 units from 3.

coldgirl [10]

Answer: It's either -6 or 12. I'm assuming it's 12 because it says "more than."

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

A projectile is fired into the air with an initial vertical velocity of 160 ft/sec from ground level. How many seconds later doe

djverab [1.8K]

The maximum height of the projectile is the maximum point that can be gotten from the projectile equation

The projectile reaches the maximum height after 5 seconds

The function is given as:

$\mathbf{h(t) = -16t^2 + 160t}$

Differentiate the function with respect to t

$\mathbf{h'(t) = -32t + 160}$

Set to 0

$\mathbf{h'(t) = -32t + 160 = 0}$

So, we have:

$\mathbf{-32t + 160 = 0}$

Collect like terms

$\mathbf{-32t =- 160 + 0}$

$\mathbf{-32t =- 160}$

Solve for t

$\mathbf{t = \frac{- 160}{-32}}$

$\mathbf{t = 5}$

Hence, the projectile reaches the maximum after 5 seconds