Step-by-step explanation:
(72)¹⁴³ ≡ x (mod 7)
Since 72 ≡ 2 (mod 7),
72³ ≡ 2³ (mod 7) ≡ 1 (mod 7).
Therefore (72)¹⁴³ = (72³)⁴⁷ * (72²)
≡ 1⁴⁷ * 4 (mod 7) ≡ 4 (mod 7).
The answer is A.
Answer:
B. 6 cookies
Step-by-step explanation:
<u>Given</u> :
- 9 cookies
- 2/3 of them are chocolate chip
<u>Number of chocolate chip</u>
- Total x fraction of chocolate chip
- 9 x 2/3
- 3 x 2
- 6 cookies
15=7x+1-5x
Put like terms together. ( group anything alike)
15+1=16
7x-5x=2x
16 2x
—- ——-
2x 2x
2x/2x cancels itself out.
16 divided by 2 is 8
x=8
I hope this helped!
Answer:
15 degrees Celsius
Step-by-step explanation:
