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viktelen [127]
3 years ago
9

If no one minds I need help!

Mathematics
2 answers:
sleet_krkn [62]3 years ago
8 0
I believe it’s A and C (sorry if you get it wrong)
Natalija [7]3 years ago
3 0

Answer:

A and C

Step-by-step explanation:

Put the points on a graph and determine if they are perpendicular.

They are, in fact, perpendicular.

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If point (7.b) is in Quadrant I and point (a.--3)
lys-0071 [83]
The point (a,b) would be in quadrant 2 (the one on the top left)
6 0
2 years ago
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Work out the angle of elevation from the
insens350 [35]

\quad \huge \quad \quad \boxed{ \tt \:Answer }

\qquad \tt \rightarrow \:Angle \:\: of \:\: elevation= 30°

____________________________________

\large \tt Solution  \: :

Let the angle of elevation be " x "

\qquad \tt \rightarrow \:  \cos(x)  =  \dfrac{9 \sqrt{3} }{18}

\qquad \tt \rightarrow \:  \cos(x)  =  \dfrac{ \sqrt{3} }{2}

\qquad \tt \rightarrow \: x =  \cos {}^{ - 1}  \bigg( \cfrac{ \sqrt{3} }{2} \bigg )

\qquad \tt \rightarrow \: x = 30 \degree \:  \:  or \:  \:  \cfrac{ \pi}{6}   \:  \: rad

Answered by : ❝ AǫᴜᴀWɪᴢ ❞

8 0
2 years ago
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It takes Santa 5 minutes to fly 35 miles with the wind .It takes him 7 minutes to fly 35 miles against the wind determine the sp
Dmitrij [34]

Answer: Santa's speed in still air is 6 miles per minute

Speed of the wind is 1 mile per minute

Step-by-step explanation:

Let x represent the speed of Santa in still air. It is assumed that in still air. She is flying with the wind. If the speed of the wind is y, then him total speed is x + y

It takes Santa 5 minutes to fly 35 miles with the wind.

Speed = distance / time

It means that

x + y = 35/5 = 7

It takes him 7 minutes to fly 35 miles against the wind. This means that his total speed will be x - y

Speed = distance/time. Therefore,

x - y = 35 /5 = 5 - - - - - - 1

Substituting x = 7 - y into equation 1, it becomes

7 - y - y = 5

-2y = 5 - 7 = -2

y = -2/-2 = 1

x = 7 - y = 7 - 1

x = 6

3 0
3 years ago
9. Determine whether (-3,2) is a solution of<br> Y = 2x +8<br> Y= -X+1
miss Akunina [59]
2 = 2(-3) + 8
2 = -6 + 8
2 = 2

true.

2 = 3 + 1
2 = 4

false.

this is not a solution because both equations have to be true.
4 0
2 years ago
Which values represent solutions to the equation? <br> Tan(3Pi/4-2x)=-1, where x = [0,pi]
Juli2301 [7.4K]
0 is the a answer definately
4 0
2 years ago
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