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Olin [163]
3 years ago
6

Which trigonometric expressions equal - 1/2 ? Check all that apply.

Mathematics
2 answers:
kozerog [31]3 years ago
7 0

sin(7π/6) and cos(-10π/3).

ArbitrLikvidat [17]3 years ago
7 0

Answer:

It's a, b, and e just to clarify with the multiple answers/comments.

Step-by-step explanation:

I just did it on edge

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Compare the two ratios is 6 : 15 less than 30 : 80 or greater than?
romanna [79]

Work:
6/15 = x/1
To get from 15 to 1, you have to divide by 15. So, to make an equal field, divide 6 by 15.

6 : 15 is the same as 2 : 5 or 0.4.

30/80 = x/1
To get from 80 to 1, you have to divide by 80. So, to make an equal field, divide 30 by 80.

30 : 80 is the same as 3 : 8 or .875.


Comparing the two, 30 : 80 is greater than 6 : 15.


Hope this helps. Have a good day.


6 0
3 years ago
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Can someone help me with this <br>3) Simplify<br>a 3x^-4 X ⅔x^½​
JulijaS [17]

Answer:

Hope it helps!!!

Step-by-step explanation:

6 0
3 years ago
Mrs. Smith bought a house for $30,000<br> and sold it for 20% more. What was the<br> selling price?
masya89 [10]

Answer:36000

Step-by-step explanation:

7 0
3 years ago
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Given the x-intercepts for the graph of a quadratic function, write a possible formula for the quadratic function, in
eduard

Answer:

Step-by-step explanation:

x-intercepts are SOLUTIONS to a quadratic whereas when you put those solutions into factor form (in a set of parenthesis), you have the FACTORS of the quadratic.  They are the same thing generally, they are just written in different forms.  For example, if a solution to a quadratic is x = 3, it has been understood that x = 3 when y = 0. Therefore, if x - 3 = y and y = 0, then x - 3 = 0.  Solving that for x, you get x = 3.  That factor of x = 3 is (x - 3).

Following that logic, for a:

If the x intercepts are x = 0 and x = 3, it is understood that x + 0 = 0 so x = 0 and the factor is (x + 0) (it could also be x - 0 since adding 0 is the same as subtracting 0); if x = 3 it is understood that x - 3 = 0 and the factor is (x - 3).

For b:

If the x-intercepts are x = -1 and x = 1, then originally the factors were (x + 1) and (x - 1).  Again, set each of those equal to 0 and solve for x (THE X-INTERCEPT EXISTS WHERE Y = 0!)

For c:

If the x-intercepts are x = -5 and x = 10, then originally the factors were (x + 5) and (x - 10).

For d:

If the x-intercept is a fraction, do the same thing:

x = 1/2 so

x - 1/2 = 0 Now multiply both the x and the 1/2 by a 2 to get the factor (2x - 1) and the other factor from x = 4 is (x - 4)

5 0
3 years ago
How can i work out what is 25% of 36
maks197457 [2]
25% of 36 is 9 hopefully my answer was helpful?
5 0
3 years ago
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