121 7/13 because 1580/13 is 121.538461538, and 7/13 is 0.538461538. therefore, 1580/13=121 7/13.
Answer:
D) 12 1/14
Step-by-step explanation:
6 2/7+5 11/14
1)
6+5=11
2)
2/7+11/14=
2/7 x 2/2=4/14
3)
4/14+11/14=15/14
4)
15/14= 1 1/14
5)
11+ 1 1/14= 12 1/14
3) Take the original price and subtract the original price * the discount percentage
99.50 - (99.50 * 0.50)
99.50 - 49.75
49.75
Option C is your answer.
4) Take the original price and add the original price * the tax rate
99.50 + (99.50 * 0.04)
99.50 + 3.98
103.48
Option D is your answer.
5) Take the original price and add the original price * the markup rate
3.95 + (3.95 * 0.20)
3.95 + 0.79
4.74
Option D is your answer.
Step-by-step Solution
Problem to solve: 6x−8y−5х+3y
solving method: simplifying
Combining like terms -8yand 3y
6x−5y−5
Final Answer:
6x−5y−5
Answer:
Mean = 0.45
Standard deviation = 0.04035
Step-by-step explanation:
This is actually a very simple problem.
The question gives us the report that 45% of the teenagers in the age bracket own smartphones.
P = mean = 45%
Therefore the mean is 0.45.
I will go ahead to help you calculate the standard deviation.
√p(1-p)/n
n = 152
P = 0.45
√0.45(1-0.45)/152
= √0.45(0.55)/152
= √0.2475/152
= √ 0.001628
= 0.04035