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jonny [76]
3 years ago
13

Help no troll answer plz

Mathematics
1 answer:
stealth61 [152]3 years ago
7 0

Answer:

Step-by-step explanation:

<u><em>Q 4.</em></u> (25m + 25m) ÷ 25 sec. = <em>2 m/sec.</em>

<u><em>Q 5.</em></u> This question belongs to Physics and not Mathematics!!!

Wavelength (lambda) = Velocity (v) ÷ Frequency ( sec^{-1} or Hz )

f = v / (lambda)

f = 3 / 2 = <em>1.5 (Hz)</em>

<u><em>Q 6.</em></u> 0.060 ÷ 2 = <em>0.030 m</em>

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What are negative exponents<br>​
iVinArrow [24]

Answer:

A negative exponent means how many times to divide by the number.

Step-by-step explanation:

Example: 8 to the power -1  = 1 ÷ 8 = 1/8 = 0.125.

7 0
3 years ago
The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airp
yKpoI14uk [10]

Answer:

Confidence Interval in 95% confidence level for the quality rating is (6.06,7.46)

Step-by-step explanation:

Confidence Interval can be calculated using the formula M±ME where

  • M is the mean of the sample
  • ME is the margin of error in a given confidence level

Using the sample obtained from 50 business travelers we get

  • Mean of the sample is 6.76
  • standard deviation of the sample is 2.526

Margin of error (ME) around the mean using the formula

ME=\frac{z*s}{\sqrt{N} } where

  • z is the corresponding statistic in 95% confidence level (1.96)
  • s is the standard deviation of the sample (2.526)
  • N is the sample size (50)

Using the numbers in the formula we get:

ME=\frac{1.96*2.526}{\sqrt{50} } ≈ 0.70

Then the confidence interval becomes 6.76±0.70

6 0
3 years ago
Hi, help:/<br> Thank you
erma4kov [3.2K]

Answer:

its the first on 5,3 can you give me brainliest

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Please help asap!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Fiesta28 [93]

Answer:

The solution is <u>-3</u>.

The graph is attached.

Step-by-step explanation:

To solve, first subtract 2 from both sides to get 5q\geq -15. Now divide 5 from both sides to get q\geq -3.

The graph representing this is attached.

Hope it helps and is correct!

8 0
3 years ago
Which equation represents a circle with its center at (2, -3) and that passes through the point (6,2)?
White raven [17]

Answer:

An equation represents a circle with its center at (2, -3) and that passes through the point (6,2) is:

(x - 2)² + (y + 3)² = 41

Step-by-step explanation:

The standard equation of a circle having the center at point C(x₀, y₀) and radius r is given by

(x - x₀)² + (y - y₀)² = r²

It means that every point  P(x, y) belonging to the circle must satisfy the equation.

In this particular case, we have that the circle passing through P(x, y) = (6, 2) and the center C(x₀, y₀) = (2, -3).

Then substituting these values in the formula:

(x - x₀)² + (y - y₀)² = r²

(6 - 2)² + (2 - (-3))² = r²

switch sides

r² = (6 - 2)² + (2 - (-3))²

r² = (4)² + (2 + 3)²

r² = (4)²+ (5)²

r² = 16 + 25

r² = 41

r = √41, r = -√41

As r can not be negative, so

r = √41

Therefore , the equation of the circle with center at C = (2, -3) and radius r = √41 is:

(x - 2)² + (y + 3)² = (√41 )²

(x - 2)² + (y + 3)² = 41

Therefore, an equation represents a circle with its center at (2, -3) and that passes through the point (6,2) is:

(x - 2)² + (y + 3)² = 41  

3 0
3 years ago
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