Answer:
$110, $44
Step-by-step explanation:
Let x = the total cost to Stefan
Jim buys for:
bicycle: $138
helmet: $16
total: $138 + $16 = $154
Jim's price of $154 is 140% of Stefan's cost, x.
154 = 140% × x
1.4x = 154
x = 110
Stefan spent $110.
Stefan's profit:
$154 - $110 = $44
Answer: $110, $44
Answer:
x = 240 feet
Step-by-step explanation:
It is given that,
The angle of depression is 30 degrees from the bottom of the boat to a deep sea diver at the depth of 120 ft.
We need to find the distance x the diver must swim up to the boat. It can be calculate by applying trigonometry as follows :

So, the distance the diver must swim up to the boat is 240 feet.
Answer:
12
Step-by-step explanation:
You have to substitute a by 17 and then just subtract.
2a+7a+8b-12b-12-1 9a-4b-13