Answer:
x = 3.96
Step-by-step explanation:
apply the pitagoras theorem
x =

9514 1404 393
Answer:
A. 55
B. 8
Step-by-step explanation:
We want ...
√x < 8
x < 8² . . . . . square both sides
x < 64
In order for the inequality to make any sense, we must also have ...
0 ≤ x
So, the solution space is ...
0 ≤ x < 64
Only answer choices A (55) and B (8) are in that range.
Answer:
2.4 miles
Step-by-step explanation:
This is a simple ratio problem.
Penguins go 4/5 mile in 1/3rd hour. <em>So how many miles will they go in 1 hour? Let that be x:</em>
<em>
</em>
<em />
<em>That is 12/5 miles or 2 2/5 miles</em>
<em>In decimal, that's </em><em>2.4 miles</em>
Answer:
The arc length of the semicircle is half the circumference of the full circle
Answer:
C
Step-by-step explanation:
49x² + 28xy + 4y² ← is a perfect square of the form
(ax + by)² = a²x² + 2abxy + b²y²
49 = 7² ⇒ a = 7 and 4 = 2² ⇒ b = 2
2ab = 2 × 7 × 2 = 28
Hence
49x² + 28xy + 4y² = (7x + 2y)²
with factor 7x + 2y ⇒ C