Answer:
100/9
Step-by-step explanation:
An exponent outside parentheses applies to each factor inside parentheses. Anything (except 0) to the 0 power is 1. Identical numerator and denominator factors cancel in the usual way.

Answer:
6
Step-by-step explanation:
You have to multiply the two numbers.
2*4=6
100% --- $79.99
1% --- $(79.99÷100) = $0.7999
20% off means 100% - 20% = 80%
80% --- $0.7999×80 = $63.992
Leave it to the nearest cent: $63.99 ---- Answer!
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Height of a trapezoid:
h = 5 · sin 80° = 5 · 0.985 = 4.924
x = 5 · cos 80° = 5 · 0.17365 = 0.868
7 - x = 7 - 0.868 = 6.132
By the Pythagorean theorem:
d² = 6.132² + 4.924²
d² = 37.6 + 24.25
d² = 61.85
d = √61.85
d = 7.86 ≈ 8
Answer: The length of a diagonal brace is 8 feet.
The answer is : 2)line segment wy