-5x-3=-23
Add 3 to both sides
-5x=-20
Divide both sides by -5
x=4
Final answer: x=4
Check:
-5(4)-3
-20-3
-23
-23=-23
True
Answer:
x = (y-b)/m
Step-by-step explanation:
Answer:
if by decomposition you mean breaking it into parts then
break it into 2 triangles and 1 rectangle
left to right
triangle with base y and height h
h=10
y=3
area of triangle=1/2bh
area=1/2(10)(3)
area=5(3)
area=15
rectangle of length x and height h
area= length times width
x=8
h=10
area=8 times 10
aera=80
last triangle
should be same as other since same base (y) and same height (h)
15
add
15+80+15=120
Step-by-step explanation:
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