D is also correct. if you need an explanation let me know
Answer:
1/729
Step-by-step explanation:
a negative exponent is fractioned like 1/9^3. Which can be simplified as 1/729 ans 9^3 = 729
9514 1404 393
Answer:
yes
Step-by-step explanation:
The width of the rectangle is given by ...
W = A/L
W = (20 cm²)/(8 cm) = 2.5 cm
__
The modified rectangle has a length of (8 cm +2 cm) = 10 cm, and an area of (20 cm² +4 cm²) = 24 cm². Its width will be ...
W = (24 cm²)/(10 cm) = 2.4 cm
The percentage change in size is ...
((2.4 cm)/(2.5 cm) -1) × 100% = -4%
The width of the rectangle decreased less than 5%. Noah is correct.
(3/5)b - 7 = a
Remember "of" means to multiply. Less than means subtraction: 7 less than means -7.
Answer:
21 m
Step-by-step explanation:
2 cm = 2.5 m
1 cm = 1.25 m
16.8 cm:
16.8 × 1.25 = 21
