Answer:
1) a) yes
b) no
c) a² - 39
(a)² - (sqrt(39))²
(a - sqrt(39))(a + sqrt(39))
This quadratic can be split into real factors, but not rational
sqrt(39) is a real number, but not rational
Answer:
84kg
Step-by-step explanation:
10*79.2kg=792kg the weight of the 10 people
3*68kg=204kg the weight of the 3 people who get out of the lift
792kg-204kg=<em>588kg the weight of the 7 people left in the lift</em>
so, the mean weight of the 7 people left in the lift=588kg:7=84 kg
Answer:
the group rents is 11 person tubes and there is 4 cooler tubes
Step-by-step explanation:
The computation is shown below:
The equation are as follows:
x + y = 15
y = 15 - x
And, the cost of person tube is $20
The cost of the cooler tube is $12.50
The total spending is $270
Now the equation is
20x + 12.50y = 270
Now put the value of y in the above equation
20x + 12.50(15 - x) = 270
20x + 187.50 - 12.50x = 270
20x - 12.50x + 187.50 = 270
7.50x + 187.50 = 270
7.50x = 270 - 187.50
7.50x = 82.50
x= 11
Now put the value of y in any of the equation
y = 15 - 11
= 4
So, the group rents is 11 person tubes and there is 4 cooler tubes
Answer:
XYZ is NOT a good buy.
Step-by-step explanation:
Calculate the market price of stock:
The Market price of the stock is $51. Therefore, buying the stock at $60 is overpriced and is NOT a good buy.