The answer is B.
Explanation: A doesn’t make sense because he only has 3 tries not 4. C doesn’t make sense because he tried 3 times not 2 times
Answer:
Step-by-step explanation:
The given triangle, ∆ABC is a right triangle.
To find cos A, we'd need to apply the trigonometric ratio formula, which is cos A = adjacent length/hypotenuse length
From the ∆ given,
AC = adjacent = 15,
BC = opposite = 36
We are not given the hypotenuse length AB.
==>Find the hypotenuse length AB, using the Pythagorean theorem formula:
c² = a² + b²
AB² = 15² + 36² = 225 + 1296 = 1521
AB = √1521
AB = 39
==>Find cos A:
cos A = adjacent/hypotenuse
Adjacent = AC = 15
Hypotenuse = AB = 39
Answer:
A. 44°
Step-by-step explanation:
180° (straight line) - 88°
= 92
180° - 92°
= 88°
2y = 88°
y = 44°
Answer:
3:4
Step-by-step explanation:
This is basically asking you to simplify the values and find the lowest ratio that compares their sizes. Starting with 27:36, you simplify. You could divide by 3, but 9 also works. Dividing both by 9 gives you 3:4, which is the most simplified answer.
Answer:
Rate of boat in still water = 70 km/hr
Rate of current = 15 km/hr
Step-by-step explanation:
Let the speed of motorboat in still water =
Let the speed of current =
Equivalent Speed upstream =
Equivalent Speed downstream =
Distance traveled upstream = 440 km
Time taken upstream = 8 hours
Using the formula:
Distance traveled downstream = 510 km
Time taken downstream = 6 hours
Adding (1) and (2):
By equation (1):
Therefore, the answer is:
Rate of boat in still water = 70 km/hr
Rate of current = 15 km/hr