For all matrices c
a11 a12
a21 a22 d where all components aij are
nonzero, show that if a − a21
, then det a − 21 and
a11 − 2a22

3.4 pizzas

step-by-step explanation:

given is a scatter plot showing number of pizzas sold during weeks for different issues of coupon

y represents number of pizzas sold and x number of coupons issued

y is marked verticaly and x horizontally

the trend line is given as

y =3.4x+43

this says that even when no coupon is issued pizzas sold will be 43

and rate of change of pizza sold for 1 unit of coupon = slope = 3.4

i.e. when x increases by 1 unit y increases by 3.4 units

hence for each additional coupon issued 3.4 pizzas more will be sold

i have no clue at all sorry

step-by-step explanation:

need more info

step-by-step explanation:

x + 4/7

step-by-step explanation:

use cymath