Geometry Unit2 Sample Work

PLEASEEE HELPP

3. sqrt(58)

4. (-4.5, 2.5)

5. 15pi or 47.12388980385

Step-by-step explanation:

3. Distance is sqrt((x2-x1)^2 + (y2-y1)^2).

sqrt((6+1)^2 + (2+1)^2)

sqrt(7^2 + 3^2)

sqrt(49+9)

sqrt(58)

4. Midpoint is (1/2(x1+x2), 1/2(y1+y2))

(1/2(-8-1), 1/2(4+1)

(1/2(-9), 1/2(5))

(-4.5, 2.5)

5. C = piD

C = 15pi or 47.12388980385

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

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.