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d1i1m1o1n [39]
3 years ago
9

A telecommunication company has 7 satellites, two of which are sending a week signal. If two are picked at random without replac

ement, find the probability that both are sending a week signal
Mathematics
1 answer:
Setler [38]3 years ago
5 0
2/7 is the probability that the first satellite sends a weak signal. That leaves 6, one of which sends a weak signal. So the probability that the second also sends a weak signal is 1/6. Combine these and we get 2/7×1/6=1/21.
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malfutka [58]

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0.142

Step-by-step explanation:

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lyudmila [28]

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Midpoint (10,4) Endpoint (9,-4), find the coordinates of the other endpoint.​
mestny [16]

Answer:

(11, 12)

Step-by-step explanation:

<u>Mid point coordinates:</u>

  • x = (x₁ + x₂)/2
  • y = (y₁ + y₂)/2

<u>Since midpoint and one endpoint given (10, 4) and (9, -4), the other endpoint:</u>

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4 0
3 years ago
In 2009, a school population was 1,700. By 2017 the population had grown to 2,500. Assume the population is changing linearly. W
qaws [65]

Answer:

100

Step-by-step explanation:

The population is changing linearly. This means that the population is increasing by a particular value n every year.

From 2009 to 2017, there are 8 increases and so, the population increases by 8n.

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This implies that:

8n = 800

=> n = 800/8 = 100

The average population growth per year is 100.

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3 years ago
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2 years ago
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