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Olegator [25]
2 years ago
10

I need help on the problem #53 it asking to prove if it is an identity.

Mathematics
1 answer:
pav-90 [236]2 years ago
8 0
Answer and workings can be found in the attachment below...

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Need help can someone help me with this question
REY [17]

In system A, the first equation multiply by 4

8x - 4y = 12 (1st)

3x + 4y = 10 (2nd)

--------------------add

11x = 22

So answer is B.



7 0
3 years ago
30 POINTS!!! What is the area of this figure? Enter your answer in the box
Elza [17]
Area of parallelogram: lw = 9(5)=45m
Area of triangle: 1/2bh = 1/2(9)(8) = 36m

So total area = 45+36=81m
3 0
2 years ago
Hi please help with my maths!
mylen [45]

Answer: I need more to solve this

Step-by-step explanation:

3 0
2 years ago
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QUICK - 70 POINTS! GEOMETRY HOMEWORK
sukhopar [10]

a/c = d/a

you would cross multiply to get aa = cd

aa = a^2

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6 0
2 years ago
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A plane is flying 3900 m above the ground level. The angle of elevation from the control tower to the plane is
Tcecarenko [31]

The horizontal distance to the control tower is approximately 18506.83m

Data;

  • distance from the ground = 3900m
  • angle of elevation = 11.4 degrees
  • horizontal distance = ?

<h3>Trigonometric Ratio</h3>

To solve this problem, we need to use trigonometric ratio SOHCAHTOA.

In this case, we have the value of opposite and angle and we need to find the adjacent to the angle. The tangent of the angle would be perfect for this.

tan\theta = \frac{opposite}{adjacent} \\tan11.4 = \frac{3900}{x}\\x = \frac{3900}{tan11.4}\\ x = 18506.83m

The horizontal distance to the control tower is approximately 18506.83m

Learn more on trigonometric ratio here;

brainly.com/question/4326804

3 0
2 years ago
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