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3 years ago

Helppp plzzz fasttt !!!!

Mathematics

2 answers:

azamat3 years ago

8 0

Answer:

c = 25

Step-by-step explanation:

A (-6, 5), B (-2, 4), C (-2, 5)

Form a triangle by adding a new point to the graph.

*in this case it is coordinate C

First step: Find the distance between points A and C

From A to C there are 4 units.

Second step: Find the distance between points B and C

From B to C there are 9 units

Next you need to use the pythagorean theorem to find the length of A to B

$\sqrt{a} +\sqrt{b} =\sqrt{c}$

Now use the lengths you have to find the missing length.

$\sqrt{4} +\sqrt{9} =\sqrt{c}$

$2 + 3 = \sqrt{c} \\\\5 = \sqrt{c} \\\\(5)^{2} = (\sqrt{c} )^{2} \\\\25 = c$

defon3 years ago

3 0

C = 25 you are welcome

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Another wooden plank is leaning against an outside wall of a building. The bottom of the plank is 9 ft from the wall. The length

Vladimir [108]

Given:
bottom of the plank or ground is 9 feet from the wall
length of the plant is 41 ft
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Let us use the Pythagorean theorem.

a² + b² = c²
a² + (9ft)² = (41ft)²
a² + 81 ft² = 1,681 ft²
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3 years ago

The total cost of painting of four walls of a square hall at Rs. 40 per sq. m. is Rs. 12000. If the hall contains 600 m³ of air,

astra-53 [7]

Answer:

The height of the hall is 9.375 meters

Step-by-step explanation:

The rate at which the walls of the square hall are painted, R = Rs. 40 per sq. m.

The total cost of painting the square hall, C = Rs. 12,000

The volume of air contained in the hall, V = 600 m³

The surface area of the four walls of the hall, A = C/A

∴ A = Rs. 12,000/(Rs. 40/m²) = 300 m²

Let 's' represent the length of sides of the square hall, and let 'h' represent the height of the square wall, we have;

The volume of the hall, V = s² × h

The surface area of the wall, A = 4 × s × h

Therefore, we get;

A = 300 = 4 × s × h

V = 600 = s² × h

V/A = 600/300 = 2 = s² × h/(4 × s × h) = s/4

s/4 = 2

s = 4 × 2 = 8

The side length of the square hall, s = 8 m.

From the area, A = 4 × s × h, we get;

A = 300 = 4 × 8 × h

h = 300/(4 × 8) = 9.375

The height of the hall, h = 9.375 m.

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3 years ago

Use the relationship between the angles in the figure to answer the question.

grigory [225]

Answer:

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Step-by-step explanation:

The two angles across from each other are both acute angles, which means that considering their positioning, they're gonna equal the same in degrees. If the question were asking to find the value of x on one of the obtuse angles, your answer would be B, considering both of those lines would equal 180 degrees.

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iogann1982 [59]

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