Answer:
OAB is 90°
Explanation -
Given - A circle with centre O
According to the theorem , The tangent of a circle and the line of tangency make an angle of 90°
Answer:y = (19 - 8x)/3
Step-by-step explanation:
add 8x to both sides ,
-3y = -19+8x
dividing both sides by -3
y = (19 - 8x)/3
Let M = #miles driven
Plan 1: .50M + 70 = total cost
Plan 2 .70M = total cost
To know how far she would drive to have an equal cost for either plan just set the equations equal to each other
.70M = .50M + 70
subtract .50M from both sides
.20M = 70
M = 70/.20 = 350 miles
Check the answser:
Plan 1: .50(350) + 70 = 175 + 70 = $245
Plan 2: .7(350) = $245
they are equal so our answer checks as correct
If f(x) = 2x -6+4
Then
f(-2) = 2(-2) -2
f(-2) = -6
Based on the key the number under the stem column is a whole number mile and the number under the leaf column is a decimal ( partial mile)
so for students that ran more than 6 miles, count the numbers under the leaf that are next to 6 or higher
, there is 3 next to 6, 2 next to 7 and 2 next to 8
so there were 3 +2 +2 = 7 students that ran more than 6 miles
shortest run: 4.3
