Answer:
Step-by-step explanation:
Note that 20 (an approximation for 205) less 4 (an approx. for 431) comes out to 16.
This tells us that the proper placement of the decimals is
20.50
- 4.31
----------
and this comes out to 16.19.
Answer:
Step-by-step explanation:
2x+3x+4x=180
8x=180
divide by 8 to both sides
x=22.5
Given:
The base of the given triangle has two part:
Left( left side of the hypotenuse) = 25
Right ( right side of the hypotenuse) = x
The altitude (h) = 60
To find the value of x.
Formula:
By Altitude rule we know that, the altitude of a triangle is mean proportional between the right and left part of the hypotenuse,
Now,
Putting,
left = 25, altitude = 60 and right = x we get,
or, 
[ by cross multiplication]
or, 
or, 
Hence,
The value of x is 144.
Answer:
Step-by-step explanation:
x³ - 6x² - 5x + 30 = x³ - 6x² - 5x + 5*6
Take x² from first two terms and (-5) from third & fourth term
= x²*(x - 6) - 5 (x - 6)
= (x - 6) (x² - 5 )
Answer:
Step-by-step explanation:
Well, first you have $130. Then you wanna minus the $40 from it. And you have $90 for lessons. So, 90 divided by 15 = 6 hours of lessons.
