Step-by-step explanation:
Used desmos, it is a graphing app that is easy to used
Answer:
1/2
Step-by-step explanation:
theoretical probability of a coin flip is always 50% heads, 50% tails
Use the line. line it up line up the triangle
Answer:
a = -2
Step-by-step explanation:
7a + 10 = 2a
subtract 7a from each side
7a-7a+10 = 2a-7a
10 = -5a
divide by -5
10/-5 = -5a/-5
-2 = a
check
7 (-2) +10 = 2(-2)
-14 + 10 = -4
-4 = -4
The first working out is correct, z = 3