Write the expression as a complex number in standard form. 20 + (-23 -8i) +7i
here are the answers that are an option

3 + 7i

-3 - i

-3 - 15i

3 + 15i

X+y=-4 x-y=2 use elimination with adding and subtraction

Jonah buys a television that costs $445. sales tax in his state is 7 percent. which of the following expressions represent the amount of tax on the television?

The two cones below are similar. what is the height of the smaller cone?