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stealth61 [152]
3 years ago
10

The runner covers a 100 meters in 9.7 seconds. What is her speed?

Mathematics
1 answer:
mestny [16]3 years ago
5 0

Answer:

10.3 m/s

Step-by-step explanation:

Speed = Distance / Time

100 metres travelled in 9.7 seconds means that her speed was 100/9.7 metres per second, which is 10.30927... rounded to 10.3 metres per second.

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3 years ago
Measured in a map with a scale of 150 miles per inch, the distance from Chicago to Boston is 4.75. How many miles is it from Chi
san4es73 [151]

The actual distance from Chicago to Boston is 712.5 miles.

Step-by-step explanation:

Given,

Scale on map = 150 miles per inch

Distance from Chicago to Boston on map = 4.75 inches

Actual distance = Distance on map * 150 miles

Actual distance = 4.75 * 150

Actual distance = 712.5 miles

The actual distance from Chicago to Boston is 712.5 miles.

Keywords: scale, multiplication

Learn more about multiplication at:

  • brainly.com/question/10546617
  • brainly.com/question/10552347

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7 0
4 years ago
If f(x)= - 4x-4, g(x)= 4x² + 4x + 2, and h(x)= 3x2 – 3, find f(3).
Deffense [45]

Answer:

f(3) = -16

Step-by-step explanation:

Given

f(x)= - 4x-4

g(x)= 4x^2 + 4x + 2

h(x)= 3x^2 - 3

Required

f(3)

We have:

f(x)= - 4x-4

Substitute x = 3

f(3) = -4 * 3 - 4

f(3) = -12 - 4

f(3) = -16

Hence:

f(3) = -16

6 0
3 years ago
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