3 years ago

If the sum of two angles is 90°, then the two angles are _______

Mathematics

1 answer:

IgorC [24]3 years ago

7 0

Two angles are complementary when they <span>add up to 90 degrees.</span>

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Answer:

$\boxed{\text{197 m}}$

Step-by-step explanation:

The formula relating distance (d), speed (s), and time (t) is

d = st

1. Calculate the distance

d = 269 s × 4.6 m·s⁻¹ = 1240 m

2.Calculate the track radius

The distance travelled is the circumference of a circle

$\begin{array}{rcl}C & = & 2 \pi r\\1240 & = & 2 \pi r\\\\r & = & \dfrac{1240}{2 \pi }\\\\& = & 197\\\end{array}\\\text{The radius of the track is }\boxed{\textbf{197 m}}$

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8,556 rounded to the nearest hundred is 8,600

8,371 rounded to the nearest hundred is 8,400

8,600-8,400=200

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