Solve each system of equations by using elimination. a store placed two orders with a supplier. the first order was for 12 digital cameras and 8 camcorders for a total of $7640. the second order was for 9 digital cameras and 11 camcorders for a total of $8330. find a price of a digital camera and a camcorder.

camcorders= 290

digital cameras=520

Step-by-step explanation:

so firstly you will need to make two equations

12x+8y=7640

9x+11y=8330

Then eliminate the one you choose,

(11) 12x+8y=7640

(-8) 9x+11y=8330

132x+ 88y=84040

-72x-88y=-66640

now eliminate your Ys and add your Xs

60x=17400

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0

i dont know

step-by-step explanation: