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Artyom0805 [142]
3 years ago
10

Help me w this multiple choice!

Mathematics
1 answer:
olga2289 [7]3 years ago
3 0

Answer:

D

Step-by-step explanation:

\sin(30)  =  \frac{n}{ \frac{10 \sqrt{3} }{3} }   \\ 0.5 =  \frac{n}{5.77} \\ n = 2.88 =  \frac{5 \sqrt{3} }{3}

\cos(30)  =  \frac{m}{ \frac{10 \sqrt{3} }{3} }  \\ 0.866 =  \frac{m}{5.77}  \\ m = 5

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Y=-1/2x+5/2 Find the slope
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Answer:

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Step-by-step explanation:

8 0
3 years ago
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I need to make sure the first one is correct and the second question i need help with
stiks02 [169]

Answer:

First one: 9 units

Second one:  |2.5|, |-3|, |3.3|, |-4|

Step-by-step explanation:

9 units not negative 9 since you are counting the distance, not to or from, and the second one is the absolute value with each one, to simplify:

|-3|=3

|2.5|=2.5

|-4|=4

|3.3|=3.3

so the answer to the second one is |2.5|, |-3|, |3.3|, |-4|

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3 years ago
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Which property justifies the fact that 5(x-2) is equivalent to 5x-10
zaharov [31]
The distributive property of multiplication over addition allows you do write that equivalence.
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3 years ago
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Find the MIDPOINT of the following two points:
xxMikexx [17]

Answer: (2.5  ;  1.5 )

Step-by-step explanation:

  • The midpoint of the segment with the points \bf  ( x_1  \ ;  \ y_ 1) and \bf (x_2 \  ;  \ y_2)  is calculated by the formula:

  • \bf (x _0  \ \ ;  \ \ y _0) = \bigg(\dfrac{x_1+x_2}{2} \ ; \  \dfrac{y_1+y_2}{2}  \bigg)  
  • Then :
  • \bf (x_0 \  ;  \ y_ 0)=\bigg( \dfrac{3+2}{2}  \ \ ;  \dfrac{4-1}{2}  \bigg)  =( 2.5  \  \ ; \ \  1,5 )
5 0
3 years ago
Write the equation of a circle in standard form for the following:
max2010maxim [7]
<h2><u>Circle Equations</u></h2>

<h3>Write the equation of a circle in standard form for the following:</h3><h3>x² − 14x + 49 + y² + 4y = 0</h3>

To write the general form of a circle into standard form, use the formula

<em>(x - h)² + (y - k)² = r²</em>

Where,

<u>(h, k)</u> is the center; and

<u>r</u> is the radius

To transform general form to standard form, group the terms that has the same variables. Replace 0 with the constant term.

  • x² - 14x + 49 + y² + 4y = 0
  • (x² - 14x) + (y² + 4y) = -49

Next step is to complete the square of each equation inside the parentheses.

  • (x² - 14x) + (y² + 4y) = -49
  • (x² - 14x - 49) + (y² + 4y + 2) = -49 - 49 + 2

Then factor each equation inside the parentheses.

  • (x² - 14x - 49) + (y² + 4y + 2) = -49 - 49 + 2
  • (x - 7)² + (y + 2)² = √2
  • (x - 7)² + (y + 2)² = 4

<u>Answer:</u>

  • The standard form of the circle is <u>(x - 7)² + (y + 2)² = 4</u>.

Wxndy~~

3 0
2 years ago
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