Answer: choice B
Explanation: Go through each answer choice and try the Pythagorean theorem to see if it works. This is because a right triangle’s side lengths are described by the Pythagorean theorem. one side^2 + second side^2 = longest side^2. In a right triangle, this equation will be true. Let me show you what I mean
For answer choice A:
(root 2)^2 + (root 3)^2 = (root 4)^2
2 + 3 = 4
5 = 4
5 does not equal 4. Therefore it cannot be A.
For answer choice B:
(root 8)^2 + (3)^2 = (root 17)^2
8 + 9 = 17
17 = 17
this is true! therefore this is a right triangle and it’s B
A) 3d, 4d
should be your answer
since all of them have "d" in them
hope this helps
The time it will take the spider to crawl across the floor is
The formula relating the speed of the spider crawling across the floor, the distance it travels, and the time taken to cover that distance is
![\text{speed}=\dfrac{\text{distance}}{\text{time}}](https://tex.z-dn.net/?f=%5Ctext%7Bspeed%7D%3D%5Cdfrac%7B%5Ctext%7Bdistance%7D%7D%7B%5Ctext%7Btime%7D%7D)
<h3>Given information</h3>
From the question, we are given the speed of the spider as
, and the distance covered as
. What we need to find is the time taken to cover a distance of
when crawling at a speed of
.
<h3>Computation</h3>
Substituting the given values into the previous formula, we get
![\text{speed}=\dfrac{\text{distance}}{\text{time}}\\\\5=\dfrac{4}{\text{time}}\\\\\implies 5\times \text{time}=\dfrac{4}{\text{time}}\times \text{time}\\\\\implies 5\times \text{time}=4\\\\\implies \dfrac{5\times \text{time}}{5}=\dfrac{4}{5}\\\\\implies \text{time}=\dfrac{4}{5}=0.8\text{ seconds}](https://tex.z-dn.net/?f=%5Ctext%7Bspeed%7D%3D%5Cdfrac%7B%5Ctext%7Bdistance%7D%7D%7B%5Ctext%7Btime%7D%7D%5C%5C%5C%5C5%3D%5Cdfrac%7B4%7D%7B%5Ctext%7Btime%7D%7D%5C%5C%5C%5C%5Cimplies%205%5Ctimes%20%5Ctext%7Btime%7D%3D%5Cdfrac%7B4%7D%7B%5Ctext%7Btime%7D%7D%5Ctimes%20%5Ctext%7Btime%7D%5C%5C%5C%5C%5Cimplies%205%5Ctimes%20%5Ctext%7Btime%7D%3D4%5C%5C%5C%5C%5Cimplies%20%5Cdfrac%7B5%5Ctimes%20%5Ctext%7Btime%7D%7D%7B5%7D%3D%5Cdfrac%7B4%7D%7B5%7D%5C%5C%5C%5C%5Cimplies%20%5Ctext%7Btime%7D%3D%5Cdfrac%7B4%7D%7B5%7D%3D0.8%5Ctext%7B%20seconds%7D)
The time it will take will be
Learn more about speed, distance and time here brainly.com/question/2292310
The correct answer to this question is: C. 147