Answer: true
Step-by-step explanation: because i learned last year in my accelerated math class about this and we did a quizlet on it and it had a question like that on the quiz.
Write what? There’s no number given
X^2 +r^2 = (r+h)^2 re write as x^2 = h^2 + 2*Rh
h = 4.5r = 3959
x^2 = 4.5^2 + 2 *3959 * 4.5
x^2 = 20.25 + 35631
x^2 = 35651.25
x = sqrt(35651.25)
x = 188.8 miles
Answer:
x = -6
Step-by-step explanation:
» <u>Solution</u>
Step 1: Distribute -5 to the terms inside the parantheses.
Step 2: Subtract 30 from both sides.
Step 3: Divide both sides by -5.
Therefore, x = -6.
Answer:
Her initial position was:
-29ft
Where we use the minus sign because this is below the ocean's surface.
Now we also know that she keeps descending at a rate of -29ft per minute, then if she keeps descending for t minutes, her position will be:
P(x) = -29ft - 29ft/min*t
Now, we also know that she does not want to descend more than 81ft below the ocean's surface, then we have the inequality:
P(x) ≥ -81ft
-29ft - 29ft/min*t ≥ -81ft
Now let's isolate t in one side:
- 29ft/min*t ≥ -81ft + 29ft = -52 ft
- 29ft/min*t ≥-52 ft
t ≤ -52ft/(- 29ft/min) = 1.79 min
Then the maximum amount of time that she can keep descending is 1.79 minutes.
