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Llana [10]
3 years ago
15

A TV is 16 inches tall and 14 inches wide. Calculate the screen's diagonal length. Round to the nearest whole number.

Mathematics
1 answer:
telo118 [61]3 years ago
8 0

Answer:

21

Step-by-step explanation:

You were close to de answer but you rounded in a wrong way

If we calculate <em>\sqrt{16^{2} + 14^{2}}  </em>we get<em> 21.2602916255</em>

We need to round to the nearest whole number, it means that we have we only have two options: 21 or 22

We need to remember the rounding rules:

  • If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up
  • If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down

We see that 1 is followed by 2, it means that we have to round the number down, so our answer is 21

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A pyramid has a surface area of 539 ft.² what is the surface area of a similar pyramid that is smaller by a scale Factor of 1/7
Nataly [62]

Answer:

77 ft²

Step-by-step explanation:

Given that:

Surface Area of larger pyramid = 539 ft²

Scale factor of the smaller pyramid = 1/7

Tbe surface area of the smaller pyramid will be :

Scale factor * surface area

1/7 * 539ft²

= 539 ft² / 7

= 77 ft²

5 0
3 years ago
In a triangle the sides has 82 degrees ,2x+10 degrees and x degrees what is x
yaroslaw [1]

Answer:

x = 29 1/3 degrees

Step-by-step explanation:

A triangle has 3 angle that total 180 degrees.

The three angles given are 82 degrees ,2x+10 degrees and x degrees.

So,  

82+ (2x+10) + x = 180

Combine like terms.

92 + 3x = 180

Subtract 92 from each side

3x = 180 -92

3x = 88

divide each side by 3

3x/3 = 88/3

Change 88/ 3 to a mixed number

3 goes in to 88 29 times  with 1 left over.

x = 29 1/3 degrees


4 0
2 years ago
For the right triangle find the missing length. Round your answer<br> to the nearest tenth.
Brut [27]

Answer:

3.5

Step-by-step explanation:

tan60 = w/2

Multiply 2 on both sides to get the w by itself.

tan60 x 2 = w

Put tan60 into the calculator.

2 x 1.732050808 = w

Multiply.

w = 3.5

3 0
2 years ago
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Find the volume of the box. Use the formula V = lwh. Rectangular box with sides x plus 1, 2x plus 1, and 3x minus 2.
Pachacha [2.7K]

i think the answer is d


3 0
2 years ago
Someone who can help me on with this problem.. <br><br> 10(1/2X+6)=8
Alina [70]
I figured it out, the answer is X = -52/5
3 0
3 years ago
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