Answer:
15
Step-by-step explanation:
a² + b² = c²
9² + 12² = c²
81 + 144 = c²
c² = 225

c = 15
The swimmer will be 1978.8 m far.
Step-by-step explanation:
The formula to apply here is; speed = distance/time
So in this case, distance =speed * time
Speed = 9.7 m/s
Time = 3.4 minutes ⇒change to seconds, multiplying by 60 sec
Time=3.4×60 = 204 seconds
Distance = 204 × 9.7 = 1978.8 m
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To find speed : brainly.com/question/1566217
Keywords: speed
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Answer:
Step-by-step explanation:
The price per pizza is $8.00 with additional toppings priced at $1.00 each.
If x represents the number of additional toppings, then the prizza price is
p(x) = $8.00 = ($1.00/topping)x, where 0 ≤ x < ∞
Answer:

Step-by-step explanation:
we have

we know that

substitute

Factor 2
![2[(2)x+(7)]](https://tex.z-dn.net/?f=2%5B%282%29x%2B%287%29%5D)

Answer:
x(x + 4) = 21
Step-by-step explanation:
Area = length * width.
21 = x + 4 * x
x(x + 4) = 21