Answer:
12.5 on left side and right side is 20.5 and 17.5
Step-by-step explanation:
Just put them on the other side that the number is on.
3 tens is 3 * 10 = 30
9 ones is 9 * 1 = 9
30 + 9 = 39
Answer: 39
1 meter = 100 centimeters
So the curtain rod is 200 cm
Answer:
<h3>Option c)

is correct</h3><h3>
The alternate hypothesis for the significance test is 
</h3>
Step-by-step explanation:
The alternate hypothesis use the sumbol for the population value
Let p be the proportion , Mean be
and stadard deviation be 
The null hypothesis states that population value is equal to the value mentioned in the given claim.
(by given).
The alternate hypothesis for the significance test states that the opposite of the null hypothesis(based on the claim )
∴ 
The symbol "<" because we want to test if the maze is completed faster and thus if the time has decreased.
<h3>∴ option c)

is correct.</h3>
Step-by-step explanation:
a is the correct not sure though