Is somebody willing to answer this

B

Step-by-step explanation:

We know that slope intercept form is where represents the slope and represents the y-intercept. In the equation we can identify that our slope is and our y-intercept is . We can now look at our graphs and figure out which one crosses the y axis (the one going up and down) at . In your case there is only one that crosses the line here so we know it's B. If there were multiple graphs with the same y-intercept you would then move to looking at the slope. a slope of means that the next point would be 3 spaces up and 5 spaces right of the y-intercept, so we can confirm that B is correct.

something that characterises a right triangle is the fact that we may use pythagoras' theorem to find any one of its sides given that we have the length of the other two sides. here, we have the length of the hypotenuse, √(87) yd, and one other side, √(23) yd, thus we can easily find the length of the remaining side using pythagoras' theorem as defined below:

c^2 = a^2 + b^2, where c is the length of the hypotenuse, and a and b are the lengths of the other two sides.

thus, given that c = √(87) and a = √(23), we may substitute these into the formula we defined above to get:

c^2 = a^2 + b^2

(√87)^2 = (√23)^2 + b^2 (substitute c = √87 and a = √23 into the equation)

87 = 23 + b^2 (evaluate (√87)^2 = 87 and (√23)^2 = 23 - remember that the square root of a number, squared will equal that very same number)

64 = b^2 (subtract 23 from both sides)

√64 = b (take the square root of both sides)

8 = b (evaluate √64 = 8)

therefor, the length of the unknown leg in the right triangle is 8 yd (first answer).