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vovangra [49]
2 years ago
12

5. how long is the deck of the bridge? show how you calculated r. (3 points: 2 points for work, 1 point for the solution)

SAT
1 answer:
Svetlanka [38]2 years ago
6 0

Based on the construction, the length of the bridge deck is given by r = √(x² + y²) units.

<h3>What is a deck?</h3>

A deck is also referred to as the roadway and it can be defined as the functional area which is designed and developed to allow automobile vehicles and pedestrians to cross highways, valleys, and water bodies.

In order to determine the length of the bridge deck, we would apply Pythagorean's theorem as follows:

r² = x² + y²

<u>Where:</u>

  • r is the length of the bridge deck.
  • a is the adjacent side (horizontal distance).
  • b is the opposite side (rise of the bridge).

Making r the subject of formula, we have:

r = √(x² + y²)

Read more on Pythagorean theorem here: brainly.com/question/16176867

#SPJ1

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The average age of a breed of dog is 19.5 years. if the distribution of their ages is normal and 20% of dogs are older than 22.6
viva [34]

The  standard deviation of the average age of a breed of dog  is said to be 3.69.

<h3>What is the standard deviation about?</h3>

Note that we take:

  • x = dog age has mean 19.5
  • Unknown standard deviation.

Hence:

z = (x - mean) /SD is distributed N (0,1) - mean o standard deviation 1 (standard normal)

Since 20% of dogs are known to be older than 22.6 years:

So 22.6 years is said to be 80th percentile,

Since z matching to 80th percentile (using the standard normal table) s is <em>0.84.</em>

Then one need to plug z, x which is  = 22.6

mean = 19.5 into the stated z equation:

Hence,

0.84 = (22.6 - 19.5)/SD

SD = (22.6 - 19.5)/0.84

= 3.69

Learn more about standard deviation from

brainly.com/question/475676

#SPJ1

3 0
2 years ago
Tennille has a cell phone plan that charges $26 per month there is an additional charge of 0.30 per text message write an expres
sammy [17]

Answer:

a) 92.30=26m+0.3t

b) 221 texts

Explanation:

If we plug in 1 for the month variable we get

92.30=26+0.3t

subtract 26 from both sides and we get 66.3=0.3t

Divide by 0.3 and we get t=221

8 0
3 years ago
How will the electroscope's tape move if each piece has a negative charge?
Svet_ta [14]
Because opposite charges attract, the two pieces of tape attract each other. ... The positive tape is attracted to the nearby negative charges more strongly than it is repelled by the more distant positive charges, and the tape moves toward your hand. I think this is the answer if it isn’t I’ll fix it
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When was hurricane watch issued for harvey
SpyIntel [72]

Answer:

1500 UTC 23 August.

Explanation:

Hurricane Harvey 14

The NWS issued the initial Storm Surge Watch for Harvey along the Texas coast from Port Mansfield to High Island at 1500 UTC 23 August

3 0
2 years ago
In the first paragraph, the words “heaven,” “firmament,” and “stars” serve mainly to
DochEvi [55]

Answer:

balls

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