Answer:
Step-by-step explanation:
4x -10y= 40
Let's rewrite this equation in the slope-intercept form (y= mx +c) so that we can obtain it's slope.
10y= 4x -40
Divide both side by 10:
The product of the gradients of perpendicular lines is -1.
⅖(gradient of line)= -1
Gradient of perpendicular line
Answer:
Step-by-step explanation:
Given:
[∵ 
]
Squaring both sides.
[∵ ![cot^2\theta =csc^2\theta-1]](https://tex.z-dn.net/?f=cot%5E2%5Ctheta%20%3Dcsc%5E2%5Ctheta-1%5D)
]
Adding 1 to both sides.
[Taking LCD=9 and adding fractions ]
Taking square root both sides.
∴
Answer:
1
2
0.5
Step-by-step explanation:
Answer:
C = 2πr or C = πd
Step-by-step explanation:
Hope this helps :)
9514 1404 393
Answer:
- non-leap years: 31/365
- leap years: 31/366
Step-by-step explanation:
As a fraction of the number of days in a calendar year, it will depend on whether the year is a leap year.
non-leap years have 365 days, so 31 days is 31/365 years.
leap years have 366 days, so 31 days is 31/366 years.
_____
If you're asking for the purpose of computing interest, you need to be aware that "ordinary interest" counts 360 days in a year. 31 days would be 31/360 years. "Exact interest" counts 365 days in a year, so 31 days would be 31/365 years.
In astronomy, the definitions of "day" and "year" may vary, depending on the frame of reference and what direction in space marks the boundary of the period. The precise fraction will depend on how you define these terms and where the clock is located.
