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Rzqust [24]
3 years ago
12

The time it takes a brick layer to lay bricks varies directly with the number of bricks. The brick layer's data is shown in the

table. If x = time, and y = the number of bricks, which equation models the brick layer's direct variation?
Mathematics
2 answers:
valentinak56 [21]3 years ago
8 0

Answer:

50

Step-by-step explanation:

2=100

half of a hundred is 50

common sense:)

Crank3 years ago
7 0
Rite it by 2.06 then add it by 1
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Use the confidence level and sample data to find a confidence interval for estimating the population μ. Round your answer to the
Levart [38]

Answer: Choice A.)   88.2 < μ < 93.0

=============================================================

Explanation:

We have this given info:

  • n = 92 = sample size
  • xbar = 90.6 = sample mean
  • sigma = 8.9 = population standard deviation
  • C = 99% = confidence level

Because n > 30 and because we know sigma, this allows us to use the Z distribution (aka standard normal distribution).

At 99% confidence, the z critical value is roughly z = 2.576; use a reference sheet, table, or calculator to determine this.

The lower bound of the confidence interval (L) is roughly

L = xbar - z*sigma/sqrt(n)

L = 90.6 - 2.576*8.9/sqrt(92)

L = 88.209757568781

L = 88.2

The upper bound (U) of this confidence interval is roughly

U = xbar + z*sigma/sqrt(n)

U = 90.6 + 2.576*8.9/sqrt(92)

U = 92.990242431219

U = 93.0

Therefore, the confidence interval in the format (L, U) is approximately (88.2, 93.0)

When converted to L < μ < U format, then we get approximately 88.2 < μ < 93.0 which shows that the final answer is choice A.

We're 99% confident that the population mean mu is somewhere between 88.2 and 93.0

7 0
2 years ago
What is the lcm and gcf of 36 and 45
Rina8888 [55]
I got your answer! I will tell you right now. Your GCF is 9 and your LCM is 180! Your very much welcome!! Good luck for you! :)
4 0
3 years ago
Read 2 more answers
Which mode of transportation did you choose? Why?
faust18 [17]

Answer:

land

Step-by-step explanation:

because,bus are more comfortable and easier other transportation are dangerous than land transportation ❤️

hope i helped u

8 0
2 years ago
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
Minchanka [31]

Answer:

Step-by-step explanation:

2k+10   | Both terms share the common factor two, so you can take it out (divide both terms by 2)

2(k+5)  | Now if you use the Distributive Property to double check, you get 2k+ 10 again

4 0
3 years ago
I mainly need help with part b, brainliest to whoever gets it right
DochEvi [55]

Answer:

y=2x+1

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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