Answer:
0.7x/0.8y = x/y * 0.7/0.8 = x/y * 0.875
So the fraction is reduced by 12.5%
Answer:
Option B. x = 13
Step-by-step explanation:
In this question, we shall give a separate diagram which will help us to further understand the question.
Please see attached photo for further details.
To find the value of x we shall use the pythagoras theory as illustrated below:
x is the longest side Therefore,
x² = 12² + 5²
x² = 144 + 25
x² = 169
Take the square root of both side
x = √169
x = 13
Therefore, the value of x 13.
Answer:
That's easily true
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
Has the correct y-axis and has the graph going the correct way for both functions.
Answer:
The answer to your question is x = 66.42° and x = 293.6°
Step-by-step explanation:
Data
cos x = 2/5
x = ?
Process
1.- Look at the sign of 2/5.
2/5 is positive so the angle we are looking for is in the first or the fourth quadrant.
2.- Remember the side that the trigonometric function relates
cos x = Adjacent side / hypotenuse
then, adjacent side = 2
hypotenuse = 5
3.- Get cos⁻¹ x
cos⁻¹x = x = 66.42°
4.- If the angle is in the first quadrant x = 66.42°
5.- If the angle is in the fourth quadrant x = 293.6°