Answer:
see explanation
Step-by-step explanation:
Using the trigonometric identity
• tan²x + 1 = sec²x
⇒ tan²x - sec²x = - 1
Thus the derivative reduces to
( - 1 ) = 0
Answer:
20 inches
Step-by-step explanation:
If that's centimeters on the x-axis and inches in the y-axis, then the slope is 2/5 and the y-intercept is 0.
The slope of 2/5 in this context means 2 inches per 5 centimeters. Then, either by solving the equation or by graphing the line, you can determine that there are about 20 inches in 50 centimeters.
3x+8=15
move +8 to the other side
sign changes from +8 to -8
3x+8-8= 15-8
3x= 15-8
3x= 7
divide both sides by 3 to get x by itself
3x/3= 7/3
answer:
7/3 or 2 1/3
Answer: 4:1
Step-by-step explanation: it would start at 8:2 and the lowest terms it can go are 4:1