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lord [1]
3 years ago
8

Solve the equation cos2x = -1\2, for 0 < x < 360°.​

Mathematics
1 answer:
natta225 [31]3 years ago
6 0

Answer:

x = 60°, 120°

Step-by-step explanation:

If we let t=2x, our equation now becomes \cos{t}=-1/2, which is true for two values of t: 120° and 240°. Since t = 2x, we can say that 120^{\circ}=2x and 240^{\circ}=2x, and therefore x = 60^{\circ} and x=120^{\circ}

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WEIRD GRAPH THING COORDINATES SIXTH GRADE
Mamont248 [21]

if y=x^2  

all you have to do is plug in the numbers like for y it would be

4=x^2 it would be -2 and 2

8 0
3 years ago
Gizmo is investing in TikTok stock. He plans on adding an additional $250 at the end of every year and the expected monthly rate
Nikitich [7]

Answer:

y=425*250^1.083

Step-by-step explanation:

It wants to write an equation of that models the amount of money in the account each month for the first year.

We need the Exponential Equation Formula: y=a*bx

Y is the amount of money in the account.

a is the initial amount he starts with

b is the amount being added each month

x is the rate of return

So, y=425*2501.083

8 0
3 years ago
Read 2 more answers
The width of a rectangle is 7 meters greater than its length. If the area of the rectangle is 170 square meters, write the quadr
Lostsunrise [7]
Since x represents the length (in meters), the width, which is 7 meters greater, is x +7. The product of these dimensions is the area (in square meters):
  x(x +7) = 170
In standard form, the quadratic is ...
  x² +7x -170 = 0
4 0
3 years ago
The graph of ƒ(x) = -√x is shifted to the right five units. The domain of the function represented by this graph is x ≥&gt;≤&lt;
Mars2501 [29]

Answer:

Domain = [5,∞)

Step-by-step explanation:

Given: f(x)=-\sqrt{x}

We are given that f(x) is shifted right by 5 units.

Rule : f(x)→f(x-b)

The graph f(x) shifted b units right

So, using rule : -\sqrt{x} →   -\sqrt{x-5}

So, g(x)=-\sqrt{x-5}

Now to find domain:

x-5>0

x>5

So, Domain = [5,∞).

8 0
3 years ago
Hey guys, could someone please help me answer question 3 (use the graph) ASAP and also I would like the working out~
-Dominant- [34]

Answer:

B. 5.6%

Step-by-step explanation:

Add all the visitors up which equals 4215.5 and do 236.9 divided by 4215.5 and you get 0.056 which converted to a percentage equals 5.6%. Hope this helps.

5 0
2 years ago
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