When it says "is a less than b" , it means b - a not a-b.
x+y +z = 105
z = 10y - 11
2x = 3y + 7
Substitute expressions in terms of "y" for x and z in top equation.
Substitute value of y to find x and z:
Answer:
57/100, 0.57, 57%
Step-by-step explanation:
Answer:
Yes
Step-by-step explanation:
The sum must be greater than 8 it can't be 7 anyway. Sums can be 9, 10 or 12. P = (4+3+1)/36 = 3/36
The answer must be No. However, the reasons offered here don't make any sense in relation to the way traffic lights work. I believe the best choice may be
... because the results are likely to occur by chance.
If lights are randomly red or green with equal probability, the probability of encountering 9 of 16 lights in any particular state is about 0.17, high enough to say it could occur by chance.
Lights that are not coordinated are rarely programmed that way, more often being either (a) traffic-controlled, or (b) on a timed cycle that favors one direction over another. That is, their probability of being green is very unlikely to be 1/2 in any sort of random way.
9 + 1.34 + 1 2 (3.50 +1.74)
Step 1: add what is inside the parenthesis
9 + 1.34 + 1 2 (5.24)
Step 2: multiply what is inside the parenthesis by 12.
9 + 1.34 + 62.88
Step 3: Add all the numbers
73.22
answer
9 + 1.34 + 1 2 (3.50 +1.74) = 73.22
