How do i use the distance formula ive watched yourube videos but my braincells dont work anymore

Suppose you're given the two points (–2, 1) and (1, 5), and they want you to find out how far apart they are. You can draw in the lines that form a right-angled triangle, using these points as two of the corners. It's easy to find the lengths of the horizontal and vertical sides of the right triangle: just subtract the x-values and the y-values.

Step-by-step explanation: Then use the Pythagorean Theorem to find the length of the third side (which is the hypotenuse of the right triangle):

c2 = a2 + b2

...so:

c  

2

=(5−1)  

2

+(1−(−2))  

2

c = \sqrt{(5 - 1)^2 + (1 - (-2))^2}c=  

(5−1)  

2

+(1−(−2))  

2

c = \sqrt{(4)^2 + (3)^2}c=  

(4)  

2

+(3)  

2

c = \sqrt{16 + 9} = \sqrt{25} = 5c=  

16+9

=  

25

=5

the aswere is the one with all 8's and the second one is with the 10,8 and 6

step-by-step explanation:

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.