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Scrat [10]
2 years ago
9

Please answer 7 and 8 for mark as brainliest

Mathematics
1 answer:
maria [59]2 years ago
8 0
7) A. A variable is an unknown value, and x is unknown. Constants are known values so they cannot have X in it.

8)A again for the same reason as number 7
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B. How much information could be transmitted in 30,000 packets?
Ray Of Light [21]

Answer:

45'000,000 45 million

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Simplify the expression<br><br> 3.2 - 5.6n - 4n + 8 =
mars1129 [50]

Answer:

maybe 11.2-9.6n...sorry if I get it wrong

Step-by-step explanation:

5 0
2 years ago
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A survey shows that 45% of the respondents pick option A. Given that 50 people replied, what is the standard error of the propor
QveST [7]
The formula for the standard error is this:
σM = σ / √N

where
σM is the standard error
σ is the standard deviation
N is the number of samples

So,
σM = 0.45 / √50
σM = 0.0636 or 6.36%

The standard error is 0.0636
3 0
2 years ago
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What is the relationship between \blueD{\angle a}∠astart color #11accd, angle, a, end color #11accd and \greenD{\angle b}∠bstart
Elza [17]

Answer:

Complementary angles.

Step-by-step explanation:

Notice that \angle a=\angle AXY, \angle b = \angle YXB  and \angle BXC = 90\°, by given.

\angle AXB = \angle AXY + \angle YXB, by sum of angles.

\angle AXB + \angle BXC = 180\°, by supplementary angles definition.

\angle AXB + 90\° = 180\°\\\angle AXB = 180\° - 90\°\\\angle AXB = 90\°

Which means,

\angle AXB = \angle AXY + \angle YXB = 90\°

Therefore,\angle a + \angle b = 90\°, in other words, angles a and b are complementary by definition.

4 0
2 years ago
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The number of people in thousands who own a cell phone is a function of the time in years starting in 1990 where p(t) = 20(1.075
Julli [10]
Try to look it up tbh
4 0
2 years ago
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