If 100% of the answers are correct ; 1*110 = 110 answers are correct.
if 50% of the answers are correct ; 0.5*110 = 55 answers are correct.
if 38% of the answers are correct ; 0.38*110 = 41.8 answers are correct.
Because the number of answers needs to be a whole number; the number of correct answers is 41.
Do you have a photo, what tells us that the unknown number is multiplied by 3?
There are two (equivalent) formulas for the circumference of a circle:
C = 2 pi r, where r is the radius of the circle
C = pi d, where d is the diameter of the circle
In this particular problem, however, we're dealing with arc length. For the shown central angle "theta" = 160 degrees, the arc length is 42 cm.
Knowing this enables us to calculate the radius or diameter of the circle.
Arc length = s = (radius) (central angle, in radians, not degrees)
First, convert 160 degrees to radians: 160 deg pi rad
----------- * ------------ = (8/9) pi rad
1 180 deg
Then 42 cm = r *(8/9) pi rad
Solve for the radius (r): divide 42 cm by (8/9) pi rad
Then use the formula for circumference introduced earlier:
C= 2 pi r Substitute [42 cm / ( (8/9) pi rad )] for r.
Simplify your result, and you will then have the circumference, C, in cm.
2x^2+4x+2
Carry the 2 over to the 3 behind the 4 and multiply so 2times2 is 4. So i new equation is.
X^2+4x+4
Now you have to find the factors of 4 which is 1,4 and 2,2
So now you have to see which one adds up to 4 so 1+4 is 5 so cross that out and 2+2=4.
So the two number is 2 and 2 now you have to bring down the x^2 and the signs.
(X+2) (X+2) and thats your answer
Answer:
white 47.7%, mulatto (mixed white and black) 43.1%, black 7.6%, Asian 1.1%,
Step-by-step explanation:
white 47.7%,
mulatto (mixed white and black)
43.1%, black 7.6%,
Asian 1.1%,
