Answer:
50
Step-by-step explanation:
(-5)* (-5) = 25; as the negatives cancel out
25 * (2) = 50; arithmetic
The inequality in the box has to be written as
x² + 2x - 80 ≤ - 65
<h3>How to solve the inequality</h3>
We have
(10 + x)1 * (16-2x) ≥ 130
Next we would have to open the bracket
160 + 16x - 20x - 2x² ≥ 130
Then we would have to arrange the equation
- 2x² - 4x + 160 ≥ 130
Divide the equation by two
- x² - 2x + 80 ≥ 65
This is arranged as
x² + 2x - 80 ≤ - 65
Read more on inequalities here:
brainly.com/question/24372553
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Answer:
b=18, a=9√3
Step-by-step explanation:
30-60-90 rule
Answer: x4
Step-by-step explanation:
Answer:
100
Step-by-step explanation:
When t=0 (no time has passed), the coin is at height 100. This means the bridge must be 100 units high for this to be possible.
