Answer:
ez, all you need to do is find the area of the rectangle by itself so 3x9 is 27, cuz its formula is bxh then u need to find the area of the triangle so 3x3 which is 9 and divde by 2 which is 4.5 and 27-4.5 is 22.5 so thats ur answer.
Step-by-step explanation:
7
Hope this helped hope you have a good day
Answer:

The number of CDs sold last week was 84 and the number of CDs sold this week was 26
Step-by-step explanation:
Let
x ---> number of CDs sold last week
y ---> number of CDs sold this week
we know that
Last week she sold 6 more than 3 times the number of CDs that she sold this week
----> equation A
Ms. Lott’s sold a total of 110 CDs over the 2 weeks
----> equation B
Solve the system by substitution
substitute equation A in equation B

solve for y

Find the value of x

therefore
The number of CDs sold last week was 84 and the number of CDs sold this week was 26
Answer:
purple
Step-by-step explanation:
the reason is ur backround
Multiply by 2 which is 8x-8y=-80then subtract from 8x-8y=80 you will get 0=160 so that it is no solution. Have a nice day.