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sveta [45]
3 years ago
5

What’s the answers for this

Mathematics
1 answer:
Harrizon [31]3 years ago
8 0
A is 82


a = 42.69

c= 43.11




you can download all in one calculator to solve such these questions
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Help me with precal pleaseee
yuradex [85]

Answer:  Choice C

\left[0 , \frac{\pi}{2}\right) \ \ \text{ and } \ \ \left(\frac{\pi}{2}, \pi\right]

==================================================

Explanation:

Let's look at the function y = sec(x) first, which is the secant function.

Recall that secant is 1 over cosine, so sec(x) = 1/cos(x)

We can't divide by zero, so cos(x) = 0 can't be allowed. If x = pi/2, then cos(pi/2) = 0 will happen. So we must exclude pi/2 from the domain of sec(x).

If we look at the interval from 0 to pi, then the domain of sec(x) is 0 \le x < \frac{\pi}{2} \ \ \text{ and } \ \ \frac{\pi}{2} < x \le \pi

we can condense that into the interval notation \left[0 , \frac{\pi}{2}\right) \ \ \text{ and } \ \ \left(\frac{\pi}{2}, \pi\right]

Note the use of curved parenthesis to exclude the endpoint; while the square bracket includes the endpoint.

So effectively we just poked at hole at x = pi/2 to kick that out of the domain. I'm only focusing on the interval from 0 to pi so that secant is one to one on this interval. That way we can apply the inverse. When we apply the inverse, the domain and range swap places. So the range of arcsecant, or \sec^{-1}(x) is going to also be \left[0 , \frac{\pi}{2}\right) \ \ \text{ and } \ \ \left(\frac{\pi}{2}, \pi\right]

8 0
3 years ago
A graph is shown with x- and y-axes labeled from 0 to 6 at increments of 1. A straight line labeled A joins the ordered pair 2,
Oksanka [162]

Answer:

A. one  B. (3, 4)

Step-by-step explanation:

1. A good graph can answer both parts (see attached image).

2. Write equations for the two lines and find a simultaneous solution.

Line A:  Slope from (2, 6) to (5, 0) is m=\frac{6-0}{2-5}=\frac{6}{-3}=-2

Using point-slope form y-y_1=m(x-x_1)

y-6=-2(x-2)\\y-6=-2x+4\\y=-2x+10

Line B:  Slopt from (6, 6) to (0, 2) is m=\frac{6-2}{6-0}=\frac{2}{3}

Using point-slope form, the equation for Line B is

y-2=\frac{2}{3}(x-0)\\y=\frac{2}{3}x+2

To find the simultaneous solution, set the <em>y's </em>equal.

-2x+10=\frac{2}{3}x+2\\-6x+30=2x+6\\-8x=-24\\x=3

Find <em>y</em> using either equation to get y = 4.

3 0
3 years ago
Evaluate  
Juli2301 [7.4K]
The answer is b, -54
7 0
3 years ago
~PLEASE HELP ASAP OFFERING 15 POINTS AND BRAINIEST~
Jobisdone [24]

Your answer would be, $34.37

Terms: 2/10

Paid Bill within 10 days:

Cash Discount: 2%

Cash Discount = 1, 718.50 * 0.02

Answer = $34.37

Hope that helps!!!!! Answer: $34.37 : )

3 0
3 years ago
A survey team is trying to estimate the height of a mountain above a level plain. From one point on the plain, they observe that
aliya0001 [1]

Answer:

5507.79 feet

Step-by-step explanation:

To find the height of the mountain, we can draw triangles as in the image attached.

Let's call the height of the mountain 'h', and the distance from the first point (31 degrees) to the mountain 'x'.

Then, we can use the tangent relation of the angles:

tan(34) = h/x

tan(31) = h/(x+1000)

tan(31) is equal to 0.6009, and tan(34) is equal to 0.6745, so:

h/x = 0.6745 -> x = h/0.6745

using this value of x in the second equation:

h/(x+1000) = 0.6009

h/(h/0.6745 + 1000) = 0.6009

h = 0.6009 * (h/0.6745 + 1000)

h = 0.8909*h + 600.9

0.1091h = 600.9

h = 600.9 / 0.1091 = 5507.79 feet

8 0
4 years ago
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