All scalar multiples of the vector [ 4, 5] makes the
line y = 5/4 x.
The matrix A of the orthogonal projection onto the line L is made of the
coordinates of the projections of the base trajectories i and j onto the line L
printed in columns.
The line L: y = 5/4*x
Orthogonal line passing over the point (1, 0): y = -4/5 *x + 4/5
Point of Intersection: (16/41, 21/41)
Projections: P(i) = 16/41 i + 21/41 j, P(j) = 16/41 i + 21/41 j
The matrix:
A = || 16/41..16/41||
......|| 16/41....16/41 ||
Make the denominator into 10x:
5x/10x +20/10x=x(x+4)/10x
5x+20=x(x+4)
5x+20=x²+4x
x²-x-20=0
(x-5)(x+4)=0
x=5 or -4
the third choice is correct.
To find the percent you have to divide the amount of red shirts(9) by(/) all of the shirts(36)
9/36=1/4 or 25%
Answer:
40πcm
Step-by-step explanation:
circ = 2πr
if d = 40cm
r = 20cm
∴ c = 2×π×20
= 40πcm
= 125.66cm