Question:
How is subtracting -4x from 9x similar to subtraction -4 from 9?
Answer:
If both of them have the same variable lets say this:
2a + 2a = 4a
Just add 2 + 2 and then keep the a later at the end since they both have the same letter.
So in this case, it will be the same as subtracting -4 from 9 because they both have the same variables so the x would stay the same:
-4x + 9x = 5x
would be the answer.
Hope this helped!
~Shane
well, let's see, let's start off with the seconds then minutes and lastly degrees.
seconds
38" + 44" = 82" , but since 60" is 1', 82" is really 1' and 22"
minutes
29' + 39' = 68' , now, let's add the 1' and 22" to that, that'd make it 69' and 22", but we know that 60' is 1°, so 69' and 22" is really 1° 9' and 22".
degrees
57° + 16° = 73° , and now let's add the 1° 9' 22", that'd make it 74° 9' 22".
We conclude that the numerical value for the circumference is larger than the numerical value for the area.
<h3>
What can we conclude about the area and the circumference?</h3>
Remember that for a circle of diameter d, the circumference is:
And the area is:
Where pi = 3.14
Here we know that d = 3m, replacing that in the above equations we get:
While the units are different, we conclude that the numerical value for the circumference is larger than the numerical value for the area.
If you want to learn more about circles, you can read:
brainly.com/question/1559324
#SPJ1
Reference angle of -3 radians is α= - 171° 53 min 15 sec .
We know the formula for calculating circular arc
Let l=circular arc which ic according to central angle of the circle α
l=((2R π)/360)α Let l=1 radian and R=1 (unit circle with radius R=1)
1= ((2π)/360)α => α= 360/(2π)= 180/π= 57° 17 min 45sec
Angle of the 1 radian is equal to angle 57° 17min 45sec
According to this
angle of the -3 radians = -3 ( 57° 17min 45sec) = - 171° 53min 15sec
when you count in the clockwise direction.
Good luck!!!
