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goldenfox [79]
3 years ago
14

What is 2/5 times 6/7

Mathematics
2 answers:
mixer [17]3 years ago
4 0
To solve this question you must reduce and you should get 12/35
OverLord2011 [107]3 years ago
3 0
12/35 unless you simplify it 
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A hiker whose eyes are 5.5 feet above the ground stands 25 feet from the base of a redwood tree. She looks up at an angle of 71
Leokris [45]
If you draw out a diagram of the situation, the height of the person is 5.5 feet, standing 25 feet away from the tree. then the person looks up at a 71 degree angle with the top of the tree, it should look like a right triangle on top of a rectangle. 

We know the angle she's looking at (71 degrees) and the side adjacent to the angle (the distance she is away from the tree, 25 feet). Using tangent we can solve for the opposite side. 

tan(71 degrees) = x ÷ 25
25 tan (71 degrees) = x
x is about 72.6 feet 

that's the height from her eyes to the top of the tree. 
To get the height of the tree you add how high above the ground her eyes are (5.5 feet) to x (72.6 feet) 

72.6 + 5.5 = 78.1 feet

that should be the height of the tree
3 0
3 years ago
Read 2 more answers
Help anyone need it asap<br> 8th grade math
Oliga [24]

Answer:

x = 1

Step-by-step explanation:

2x + 8 = 4x + 6

<em>subtract 6 from both sides of the equation</em>

2x + 8 - 6 = 4x + 6 - 6

2x + 2 = 4x

<em>subtract 2x from both sides of the equation</em>

2x - 2x + 2 = 4x - 2x

2 = 4x - 2x

2 = 2x

<em>divide both sides of the equation by 2</em>

2/2 = 2x/2

1 = x

4 0
3 years ago
Here is a tunnel for a toy train.
jonny [76]

The <em>total</em> area of all six faces of the tunnel is 614.197\pi square centimeters.

<h2>Procedure - Surface area of a tunnel for a toy train</h2>

The surface area of the solid (A) used to represent the tunnel for a toy train is the sum of its six faces (two <em>semicircular</em> sections, inner <em>semicircular</em> arc section, outer <em>semicircular</em> arc section, two rectangles).

<h3>Determination of the surface area of the tunnel based on information of the diagram</h3>

We calculate the surface area as following:

A = 2\cdot \frac{\pi}{2} \cdot [(10\,cm)^{2}-(8\,cm)^{2}] + \pi\cdot (8\,cm)\cdot (30\,cm) + \pi\cdot (10\,cm)\cdot (30\,cm) + 2\cdot (2\,cm)\cdot (30\,cm)

A = 614.197\pi\,cm^{2}

The <em>total</em> area of all six faces of the tunnel is 614.197\pi square centimeters. \blacksquare

To learn more on surface areas, we kindly invite to check this verified question: brainly.com/question/2835293

5 0
2 years ago
Which equation has the solutions x = 1 plus-or-minus StartRoot 5 EndRoot?
Sophie [7]

Answer:

The quadratic equation is x^2-2x-4

Step-by-step explanation:

We want to know the equation that has the solution below;

x = 1 ± √5

This means x = 1 + √5 or 1 - √5

The equation would thus be;

(x-1-√5)(x-1+ √5)

= x(x-1+ √5)-1(x-1+ √5)-√5(x-1+ √5)

Opening the brackets we have ;

x^2-x+ √5x-x + 1 -√5-√5x+ √5-5

collecting like terms we have;

x^2-2x+1-5

= x^2-2x-4

6 0
4 years ago
Which equation represents the line shown on the coordinate grid? (5,0) (0,-2)
harkovskaia [24]
Jkoooolpolpo awww wok I
4 0
3 years ago
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