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uysha [10]
4 years ago
14

Need help please :))

Mathematics
1 answer:
Svetradugi [14.3K]4 years ago
7 0
Vertical angles are equal, so
.. 2y +5 = 4y
.. 5 = 2y . . . . . . . . subtract 2y from both sides of the equation
.. 5/2 = y . . . . . . . divide by the coefficient of y

This answer corresponds to the 4th selection.
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noname [10]
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3 0
3 years ago
If a 15' ladder is leaned up against a building so that the bottom of the ladder is 10' from the base of the building, what angl
Rom4ik [11]

Answer:

48.2°

Step-by-step explanation:

If a 15' ladder is leaned up against a building so that the bottom of the ladder is 10' from the base of the building, what angle does the ladder make with the ground

Let the angle the ladder makes with the ground be represented by x

We solve the above question using the Trigonometric function of Cosine

cos x = Adjacent/Hypotenuse

Adjacent = 10 inches

Hypotenuse = 15 inches

Hence,

cos x = 10/15

x = arc cos (10/15)

x = 48.189685104°

Approximately = 48.2°

Therefore, the angle the ladder makes with the ground is 48.2°

7 0
3 years ago
Tell whether the triangle with the given side lengths is a right triangle.<br> 24, 70, 75
alexgriva [62]

Answer:

Not a right triangle.

Step-by-step explanation:

We can tell if it's a right triangle or not by using the Pythagorean Theorem.

The largest value is always the hypotenuse (c).

a² + b² = c²

24² + 70² = 75²

576 + 4900 = 5625

5476 ≠ 5625

The values do not equal one another. Therefore, this triangle is NOT a right triangle.

6 0
3 years ago
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