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Genrish500 [490]
3 years ago
13

Sin2x-1=0 principle values? X= ?

Mathematics
1 answer:
guajiro [1.7K]3 years ago
5 0
It would be Pi divided by 4 
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Find the equations of the tangents to the curve y = x²-x-12 at each of the points where the curve crosses the x-axis.​
poizon [28]

Step-by-step explanation:

First, find the zeroes of the parabola

{x}^{2}  - x - 12

{x}^{2}  - 4x + 3x - 12

x(x  - 4) + 3(x - 4)

(x +  3)(x  - 4) = 0

x =  - 3

x - 4 = 0

x = 4

So the zeroes or where the curve crosses the x axis is at 4 and -3.

Now, we take the derivative of the function.

\frac{d}{dx} ( {x}^{2}  - x - 12) = 2x - 1

Plug in -3, and 4 into the derivative function

2( - 3) =  - 7

2(4) - 1 = 7

So at x=-3, our slope of the tangent line is -7 and must pass through (-3,0). So we use point slope formula.

y - y _{1} = m(x - x _{1})

y - 0 =  - 7(x - (  - 3)

y =  - 7x - 21

At x=4, our slope of tangent line is 7, and pass through (4,0) so

y - 0 = 7(x - 4)

y = 7x - 28

So the equations of tangent is

y =  - 7x - 21

y = 7x - 28

6 0
2 years ago
WILL MARK BRAINLIEST IF GOTTEN RIGHT!! PLS DONT ANSWEER IF U DONT KNOW
Genrish500 [490]

Answer:

D) 125°

Step-by-step explanation:

FGHJ is congruent to RSTV

So, m∠F = m∠R

∠R = 125

∠F = 125

4 0
3 years ago
Two baseball players bat first and second in the lineup. The first batter has an on-base percentage of 0.23. The second batter h
irina1246 [14]

Answer:

The probability that neither player gets on base is 0.4824

Step-by-step explanation:

1. Both players get to base. <em>Just multiply the two probabilities together</em>:

= (<em>probability first batter gets on base</em>) x (<em>probability second batter gets on base, if the first batter gets on base</em>)

= 0.23 x 0.38

= 0.0874

2. One player gets to base. The formula here is P(A+B) =P(A) + P(B) - P(A) x P(B)

= (<em>probability first batter gets on base</em>) + (<em>probability second batter gets on base, if the first batter does not</em>) - (0.23 x 0.26)

= 0.23 + 0.26 - (0.23 x 0.26)

= 0.49 - 0.0598

= 0.4302

3. Neither player gets to base =<em> 1 - addition of the previous two cases</em>.

= 1 - (0.0874 + 0.4302)

= 1 - 0.5176

= 0.4824

7 0
2 years ago
Find cos(B) in the triangle.<br> Choose 1 answer: 8/17
gavmur [86]

Answer:

8 / 17

Step-by-step explanation:

So cosine is adjacent ÷ hypotenuse.

Adjacent = 8

Hypotenuse = 17

8 / 17

7 0
3 years ago
Covert this repeating decimal into a fraction ANSWER CHOICES 4936/990, 530/900,674/990,8099/990
mamaluj [8]
If you divide 530/900 in a calculator you would get 0.58 repeating then ending in a 9
7 0
3 years ago
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