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olasank [31]
2 years ago
8

Use a calculator to find the angle measure to the nearest degree for cos-1 (0.5) 45 Pts!

Mathematics
2 answers:
umka2103 [35]2 years ago
8 0

Step-by-step explanation:

no calculator req

cos 60 is 0.5

so cos inverse of 0.5 os 60°

Amiraneli [1.4K]2 years ago
6 0

\\ \tt\hookrightarrow cos^{-1}(0.5)

\\ \tt\hookrightarrow cos^{-1}\left(\dfrac{1}{2}\right)

\\ \tt\hookrightarrow 60°

Fact about cosine(cos)

\\ \tt\hookrightarrow cos\theta=\dfrac{Base}{Hypotenuse}

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Hya think of a number "m" . She square it, add "y" to the answer and then subtract 7 from it. The final answer is "A". 1) Derive
Bond [772]
<h2><u>Solution (1)</u> :</h2>

Given, to find A we have to :

  • square m
  • Add y to m²
  • Subtract 7 from m² + y

From the question, the following equation can be formed :

=\tt  A = {m}^{2}   + y - 7

Therefore, the formula for finding A = m² + y - 7

<h2><u>Solution (2)</u> :</h2>

The value of A we can derive from the formula is :

=\tt A =  {m}^{2}  + y - 7

Value of m = 3 (given)

Which means :

=\tt A =   {3}^{2}  + y  - 7

=\tt \: A = 9 + y - 7

=\tt A = 9 - 7 + y

\color{plum} =\tt A = 2 + y

Thus, the value of A = 2+y

Therefore, the value of A = <u>2+y</u>

7 0
3 years ago
How to solve-2(p+-8)+-2=6
natka813 [3]

Answer:

p=4

Step-by-step explanation:

first change all the addition signs in to minus if the numbers are negative.    ex. p+-8 = p-8.

So the equation equals to -2(p-8)-2=6.

Next +2 to both sides to cancel out the -2 and you get -2(p-8)=8

Divide both sides by -2 and you get (p-8)=-4. At this point you can remove the parenthesis. So the equation is p-8=-4

Finally +8 to both sides and you get p=4

3 0
3 years ago
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Taya2010 [7]

Answer:

if you meant 9x+10y=4 then the x intercepts are (4/9,0) and the y intercepts are (0,2/5).

Step-by-step explanation:

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icang [17]

Answer:

x>-2

Step-by-step explanation:

-3x+2<8

Subtract 2 from each side

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Divide each side by -3. remembering to flip the inequality

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Murljashka [212]
The avarage is 180:18=10 , 10 min per hole
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