• ### How is this solved? Help!?

Best answer: cos^2x - sin^2x = √3/2 cos(2x) = √3/2 2x = 30 + 360n or 2x = 330 + 360n for all integers, n Our domains is restricted to [0, 360) so x = 15 deg or x = 165 deg or x = 195 deg or x = 345 deg
Best answer: cos^2x - sin^2x = √3/2 cos(2x) = √3/2 2x = 30 + 360n or 2x = 330 + 360n for all integers, n Our domains is restricted to [0, 360) so x = 15 deg or x = 165 deg or x = 195 deg or x = 345 deg
4 answers · Mathematics · 4 months ago
• ### PLEASE answer, is the opposite of good 'bad' or 'evil'?

Best answer: Bad and evil are synonymous so they're both the opposite of good.
Best answer: Bad and evil are synonymous so they're both the opposite of good.
6 answers · Standards & Testing · 1 week ago
• ### Do you think if Florence gets bad enough Carolina may have a Sharknado on their hands...?

Best answer: Yes, there have multiple documentaries explaining the phenomenon.
Best answer: Yes, there have multiple documentaries explaining the phenomenon.
3 answers · Politics · 2 weeks ago
• ### Can this be a monomial or polynomial?

Best answer: If 2 isn't an exponent, then 3xyz2 = 6xyz, which is a monomial. Though, if 2 is an exponent, 3xyz^2 is a monomial, also.
Best answer: If 2 isn't an exponent, then 3xyz2 = 6xyz, which is a monomial. Though, if 2 is an exponent, 3xyz^2 is a monomial, also.
2 answers · Mathematics · 3 weeks ago
• ### T/F Energy is not a limiting factor for organisms.?

Best answer: False. We eat every day of our lives so we don't run out of energy.
Best answer: False. We eat every day of our lives so we don't run out of energy.
1 answer · Mathematics · 4 weeks ago
• ### Time is over?

Best answer: Not even the end of time can stop Yahoo Answers.
Best answer: Not even the end of time can stop Yahoo Answers.
2 answers · Jokes & Riddles · 1 month ago
• ### How to go about this calculus problem?

Best answer: Use the power rule. dw/dt = 12t + 4
Best answer: Use the power rule. dw/dt = 12t + 4
4 answers · Mathematics · 1 month ago
• ### Can you find out the velocity of an object that was propelled without the time it took to reach the spot.?

Best answer: You would need initial velocity and then account for gravity's acceleration.
Best answer: You would need initial velocity and then account for gravity's acceleration.
3 answers · Mathematics · 4 months ago
• ### What is the square root of negative zero?

Best answer: √-0 = √0 = 0
Best answer: √-0 = √0 = 0
11 answers · Mathematics · 8 months ago
• ### Why are some people always a step ahead of others?

Best answer: smarter more aware
Best answer: smarter more aware
4 answers · Psychology · 1 month ago
• ### How to pregert vachina?

Best answer: "Pregert" and "vachina" aren't real words.
Best answer: "Pregert" and "vachina" aren't real words.
2 answers · Pregnancy · 3 months ago
• ### A car moves uphill at 40 km/h and then back downhill at 60km/h.What is the average speed for the round trip?

Best answer: Pick a distance the car travels one way. Any distance will do because we just want ratio of times the car travels at the two speeds. Let the distance be 120km. The car travels uphill 120/40 = 3 hours. The car travels downhill 120/60 = 2hours. average speed = total distance/total time = (120 + 120)/(2 + 3) = 240/5 = 48 km/h show more
Best answer: Pick a distance the car travels one way. Any distance will do because we just want ratio of times the car travels at the two speeds. Let the distance be 120km. The car travels uphill 120/40 = 3 hours. The car travels downhill 120/60 = 2hours. average speed = total distance/total time = (120 + 120)/(2 + 3) = 240/5 = 48 km/h
3 answers · Physics · 2 months ago
• ### How do you make Y the subject of the equation 5x-3y=8? Please show me in steps.?

Best answer: Divide both sides by -3. -3y = -5x + 8 -3y/(-3) = -5x/(-3) + 8/(-3) y = 5x/3 - 8/3
Best answer: Divide both sides by -3. -3y = -5x + 8 -3y/(-3) = -5x/(-3) + 8/(-3) y = 5x/3 - 8/3
8 answers · Mathematics · 2 months ago
• ### Please Explain.?

Best answer: |cosx| because square root always yields a non-negative number
Best answer: |cosx| because square root always yields a non-negative number
1 answer · Mathematics · 3 years ago
• ### Find the domain of the function √(x-3)(x +5),given x∈R.?

Best answer: x >= 3 If you meant √((x - 3)(x + 5)), then x < -5 or x >= 3
Best answer: x >= 3 If you meant √((x - 3)(x + 5)), then x < -5 or x >= 3
3 answers · Mathematics · 2 months ago
• ### What is wrong with people?

Best answer: "Hell is other people." -Jean Paul Sartre
Best answer: "Hell is other people." -Jean Paul Sartre
7 answers · Etiquette · 2 months ago
• ### Evaluate. (PICTURE BELOW) Number 5 A) and B)?

Best answer: f(-2) = (-2)^2 - (-2) + 3 = 4 + 2 + 3 = 9 f(10) = 10^2 - 10 + 3 = 93
Best answer: f(-2) = (-2)^2 - (-2) + 3 = 4 + 2 + 3 = 9 f(10) = 10^2 - 10 + 3 = 93
1 answer · Mathematics · 2 months ago
• ### Write a two column proof. (PICTURE BELOW)?

Best answer: LM is congruent to ON ... given OL is a transversal ... LM is parallel to ON and OL interects LM and ON <PLM is congruent to <NOP ... alternate interior angles are congruent MN is a transversal ... LM is parallel to ON and MN intersects LM and ON <PML is congruent to <ONP ... alternate interior angles are congruent Triangle... show more
Best answer: LM is congruent to ON ... given OL is a transversal ... LM is parallel to ON and OL interects LM and ON <PLM is congruent to <NOP ... alternate interior angles are congruent MN is a transversal ... LM is parallel to ON and MN intersects LM and ON <PML is congruent to <ONP ... alternate interior angles are congruent Triangle LPM is congruent to triangle OPN ... Angle-Side-Angle Theorem
1 answer · Mathematics · 2 months ago
• ### Trig Identities?

Best answer: 3) 2csc(2x) = 2/sin(2x) = 2/(2sinx cosx) = 1/(sinx cosx) = secx cscx
Best answer: 3) 2csc(2x) = 2/sin(2x) = 2/(2sinx cosx) = 1/(sinx cosx) = secx cscx
3 answers · Mathematics · 2 months ago
• ### Math Help Please?

Best answer: p(>= 40 times) = 1 - p(< 40 times) = 1 - p(0, 1, 2, 3, or 4 quarters work first 39 times) = 1 - (p(0 in 39 times) + p(1 in 39 times) + p(2 in 39 times) + p(3 in 39 times) + p(4 in 39 times)) = 1 - (39C0 + 39C1 + 39C2 + 39C3 + 39C4)
Best answer: p(>= 40 times) = 1 - p(< 40 times) = 1 - p(0, 1, 2, 3, or 4 quarters work first 39 times) = 1 - (p(0 in 39 times) + p(1 in 39 times) + p(2 in 39 times) + p(3 in 39 times) + p(4 in 39 times)) = 1 - (39C0 + 39C1 + 39C2 + 39C3 + 39C4)
1 answer · Mathematics · 2 months ago