Answer:
s for length of either equal side
b for the unequal side
b=-2+2*(s+s) and 2s+b=40
b=2*2s-2
b=4s-2
2s+4s-2=40
6s-2=40
6s=42
s=7
b=4*7-2
b=28-2
b=26
This is a work problem. It can be solved as follows:
Houston = 1/x
Dominique = (1/2x)
Together = 1/5
Then, we add Houston and Dominique:
1/x + 1/2x = 1/5
Solve for x,
x = 2/15
Therefore, it would take 15/2 hours for Houston to ice by himself, the last option.
Answer:
All but the first answer choice could be the length and width of a rectangle.
Step-by-step explanation:
3 cm and 8 cm produce 24 cm^2 when multiplied together. Reject.
1 cm and 20 cm, when multiplied together, result in 20 cm^2. Select.
2 cm and 10 cm => 20 cm^2 Select
4 cm and 5 cm => 20 cm^2. Select
7. 233
8. 4
9. 6
10. 5
11. 4
12. 7
13. 7
