7(3r-1)-(r+5)=-52
21r-7-r-5=-52
21r-r-5-7=-52
20r-12=-52
Add 12 to both sides
20r=-40
Divide by 20
r=-2
Answer:
Step-by-step explanation:
The Midpoint formula is
where the x's and y's come from the coordinates of the endpoints. Filling in:
Answer:
m = -4.33333 or -4 and 1/3
Step-by-step explanation:
gradient = (difference in y)/(difference in X)
m = (-1-12)/(8-5)
m = -13/3
m = -4.3333333
1) add 15d to both sides
200<span><80+15d
2) takeaway 80 from both sides
120</span><span><15d
3)divide by 15 to solve the inequality
8</span><span><d</span>
She has 50% that she will get heads
