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oksian1 [2.3K]
3 years ago
11

6. A ship is on the surface of the water, and its radar detects a submarine at a distance of

Mathematics
1 answer:
Minchanka [31]3 years ago
7 0

Answer:

the submarine is 92.994 feet ≈ 93 feet deep from the surface of the water

Step-by-step explanation:

We can think in a triangle where the hypotenuse is the detection distance and the angle with the horizontal surface of water is the depression angle, then the underwater distance is the vertical side of the triangle.

If we denote Ф  as the angle of depression ,d as the detection distance and x as the unknown depth of the submarine, using trigonometry:

x = d* sin Ф

thus

x=  d * sin Ф = 238 feet * sin 23° = 92.994 feet ≈ 93 feet

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If you reflect (–2, –8) across both axes, which quadrant will it be in? Justify your reasoning.
stepan [7]
The quadrant would be the first one, because once reflected over the y-axis, it would become (2,-8), and once reflected over the x-axis, it would become (2,8)
8 0
3 years ago
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A triangle has an area of 12 square millimeters. What could be the measures of the base and height of the triangle in millimeter
Taya2010 [7]

A = bh/2

12= bh/2

bh = 24

We need to find pairs that multiply to 24

Answer:    b=3 and h=8 ,  b=6 and h=4, b=12 and h=2​

8 0
3 years ago
What is slope-intercept form of a line that passes through points (2,11) and (4,17)?​
kramer

Answer:

y = 3x + 5

Step-by-step explanation:

Okay, so first we do the equation for rise over run which is y2 - y1/ x2 - x1

so plug the numbers 11 - 17/ 4 - 2 getting the slope -3, now since we found the slope we need to find the intercept form, what you have to do now is plug in a coordinate from the x value and y value one of the pairs essentially so,

y = 3x + b, I chose your first pair

11 = 3 x 2 + b

equals to,

11 = 6 + b

now we want b, by itself.

5 = b

so the total intercept form answer is

y = 3x + 5

I will check over it,

11 = 3 x 2 + 5

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I hope this helped!

6 0
3 years ago
What is the volume of the pyramid?
Roman55 [17]

Answer:

A. 144 ft^3

Step-by-step explanation:

5 0
3 years ago
Mandy needs to paint all the faces and the base of a model pyramid she made for her history project. The dimensions of the pyram
Maurinko [17]

Hello,

The correct answer is B) 280 in²

= 10( 2 × 9 + 10 )

= 10 (2 × 9 = 18 + 10 = 28)

= 10 × 28 = 280

= 280

Answer: 280 in²

In other words.....

= 10(2*9+10)

= 10(18+10)

= 10*28

= 280

Answer: 280 in²

Hope this helps!!!! (:


7 0
3 years ago
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