Ask question

Ask question

All categories

3 years ago

15

Solve (tan^2 x)/2 -2cos^2 x =1 for 0 <= x <= 2pi

1 answer:

dem82 [27]3 years ago

3 0

Answer:

sorry don’t understand cause it’s not spread out

Step-by-step explanation:

You might be interested in

Can someone pleas answer this

Dima020 [189]

83.7 m

18.6 / 3.6 = 5.166667

16.2*5.166667 = 83.7 m

7 0

3 years ago

Solve the two-step equation. 5.1 = –3x – 4.2

Tems11 [23]

$5.1 = -3x - 4.2$

$9.3=-3x$

$-3.1=x$

3 0

4 years ago

Read 2 more answers

PLEASE ANSWER ASAP. WILL GIVE BRAINLIEST

Eduardwww [97]

Answer:

I cant see that, its upside down.

Step-by-step explanation:

3 0

3 years ago

zhenek [66]

- Trapezoid

The measures of three angles of a quadrilateral are 70, 125, and 89 degrees. Find the measure of the fourth one.

》The measure of the fourth one is 36°.

<h3>HOPE ITS HELP</h3>

4 0

3 years ago

When n=343 college students are randomly selected and surveyed, it is found that x=110 own a car. Find a 99% confidence interval

Liono4ka [1.6K]

Answer:

The margin of error will be "0.65". A further explanation is provided below.

Step-by-step explanation:

The given values are:

n = 343

x = 110

At 99% confidence level,

$\alpha = 1-99$ %

$=1-0.99$

$=0.01$

then,

$\frac{\alpha}{2} =\frac{0.01}{2}$

$=0.005$

or,

$Z_{\frac{\alpha}{2} }=Z_{0.005}$

$=2.576$

Now,

The point estimate will be:

⇒ $\hat{P}=\frac{x}{n}$

⇒ $=\frac{110}{343}$

⇒ $=0.321$

or,

⇒ $1-\hat{P}=1-0.321$

⇒ $=0.679$

The margin of error will be:

⇒ $E=Z_{\frac{\alpha}{2} }\times \sqrt (\frac{(\hat{P}\times (1 - \hat{P})) }{n} )$

On substituting the above values, we get

⇒ $=2.576\times \sqrt{\frac{0.321\times 0.679}{343} }$

⇒ $=2.576\times \sqrt{\frac{0.217959}{343} }$

⇒ $=0.065$

hence,

⇒ $\hat{P}-E$

⇒ $0.321-0.065$

⇒ $0.256,0.386$

6 0

3 years ago