Jill and Paul each improved their yards by planting grass sod and ivy. They bought their supplies from the same store. Jill spent $106 on 12 ft² of grass sod and 2 pots of ivy. Paul spent $86 on 2
ft? of grass sod and 14 pots of ivy. What is the cost of one ftof grass sod and the cost of one pot
of ivy?
A) ft of grass sod: $13, pot of ivy: $3 B) ft² of grass sod: $5, pot of ivy: $7
C) ftof grass sod: $3, pot of ivy: $8 D) ft of grass sod: $8, pot of ivy: $5

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.

sina-sinb

cosb+cosa

tana-tanb

cos0+cos x pi/3

20tan

step-by-step explanation: