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Yanka [14]
3 years ago
7

Find the vertex of this parabola.

Mathematics
1 answer:
Levart [38]3 years ago
3 0
The best answer is c
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Karolina [17]
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4 0
3 years ago
Describe and correct the error in finding csc θ, given that θ is an acute angle of a right triangle and cos θ =7/11
a_sh-v [17]

Answer:

<h2>cosecθ = 1/sinθ = 11/6√2</h2>

Step-by-step explanation:

Given that  cos θ =7/11, cosec θ = 1/sinθ in trigonometry.

Based on SOH, CAH, TOA;

cosθ = adjacent/hypotenuse = 7/11

adjacent = 7 and hyp = 11

Since sinθ = opp/hyp, we need to get the opposite to be able to calculate sinθ.

Using pythagoras theorem to get the opposite;

hyp^{2} = adj^{2}  + opp ^{2}  \\opp = \sqrt{hyp^{2} - adj^{2}  } \\opp = \sqrt{11^{2} - 7^{2}} \\opp = \sqrt{72} \\opp = 6\sqrt{2}

sinθ = 6√2/11

cosecθ = 1/sinθ = 1/( 6√2/11)

cosecθ = 1/sinθ = 11/6√2

Note the error; cscθ\neq 1/cosθ but cscθ = 1/sinθ

6 0
3 years ago
sammy sold 5 bottles for every 3 bottles david sold. Together they sold 160 bottles, how many did each boy sell?
slega [8]
David sold 60 bottles and Sammy sold 100 bottles. x(5+3)=160; 5x+3x=160; 8x=160; 8x/8=160/8; x=20; 20(5+30); 100+60=160
6 0
3 years ago
Read 2 more answers
2a^3+a^2–17–3a^2+a^3–a –80
adelina 88 [10]

Answer:

=3a^3−2a^2−a−97

Step-by-step explanation:

3 0
3 years ago
2a – 7 + 4b + 7a – b + 4
Contact [7]

Answer:

(2a+7a)+(−7+4)+(4b−b)

9a−3+3b

Brainlist Pls!

5 0
2 years ago
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