Answer:
what expression do u want to be evaluated?
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given
Sample of 12 measurements has a mean of 16.5 and
a sample of 15 measurements has a mean of 18.6
Take be the mean and no of measurements
and be the mean and no of measurements in second case
Similarly,
Mean of 27 measurements
Answer:
A knife costs £2.88.
Step-by-step explanation:
Create two equations using what you know to show the problem.
k = 2s
12k + 8s = 46.08
Substitute the first equation in for k, then isolate s to find how much spoons cost.
12(2s) + 8s = 46.08
24s + 8s = 46.08
32s = 46.08
s = 1.44
A spoon costs £1.44. To find the price of a knife, double the cost of a spoon:
1.44 * 2 = 2.88
A knife costs £2.88.
Step-by-step explanation:
ram is true because when 2.5 is multiplied to .5 centimeters then answered becomes 12.5 centimeters square