1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
aleksley [76]
3 years ago
13

Evaluate the expression below. a = -8, b = - 4.1, and c = 9.

Mathematics
1 answer:
wolverine [178]3 years ago
5 0

Answer:

-9+(-4.1)-(-8)

= -9-4.1+8

= -5.1

You might be interested in
A company makes windows for use in homes and commercial buildings. The standards for glass thickness call for the glass to avera
guajiro [1.7K]

The question is incomplete. The complete question follows.

A company makes windows for use in homes and commercial builidings. The standards for glass thickness call for the glass to average 0.325 inch with a standard deviation equal to 0.065 inch. Suppose a random sample of n=44 windows yield a sample mean of 0.337 inch. Complete parts a and b.

a. What is the probability of x ≥ 0.337 if the windows meet the standards?

b. Based on your answer to part a, what would you conclude about the population of windows? Is it meeting the standards? (A result is unusual if it has a probability less than 0.05)

Answer and Step-by-step explanation: To answer this question, use <u><em>Central Limit Theorem</em></u>: it states regardless of the original population distribution, if the sample size is large enough, the sample mean distribution will approach a normal distribution.

The calculations for the CLT is given by normalizing the distribution, i.e.:

z=\frac{x-\mu}{\sigma/\sqrt{n} }

where

z is z-score

x is the sample mean

μ is population mean

σ is standard deviation of the population

n is the number of individuals in the sample

Calculating z-score for the window maker company:

z=\frac{0.337-0.325}{0.065/\sqrt{44} }

z=\frac{0.012}{0.0098}

z = 1.22

Using the z-score table, we found the probability:

P = 0.8888

As it is a "more than situation":

P(x≥0.337) = 1 - 0.8888

P(x≥0.337) = 0.1112  or 11.12%

a. Probability of x≥0.337 if the windows meet the standards is 11.12%.

b. Comparing results, probability of x≥0.337 is bigger than 0.05:

0.1112 > 0.05

So, we can conclude that the random sample of n=44 is meeting the standards estipulated.

7 0
3 years ago
Milo wants to have his birthday party at a local entertainment center. The center charges a flat fee of $30 for a room and party
jok3333 [9.3K]

Answer:

b

Step-by-step explanation:

75-30=45

6 is the amount that it cost for each guest well 6x7=42 therefore milo can only invite up to 7 guests to his party

6 0
3 years ago
Read 2 more answers
How many solutions does the following equation have ? -3x+9-2x=-12-5x?
Maurinko [17]

Answer:

0.....................

5 0
3 years ago
DO 11. Find the slope of the line that passes through the points<br> (-4, 7/2) and (3, -21/10)
Evgen [1.6K]

Answer:

-4/5

Step-by-step explanation:

5 0
2 years ago
Which of the expressions is rational? 25 + 2 7 − 2 64 + 45
Levart [38]

Answer:

All of the expressions

Step-by-step explanation:

A rational number is one that can be written as a ratio, or a number with a terminating decimal.

All of the expressions are whole numbers, so they are all rational.

4 0
3 years ago
Other questions:
  • Given NELR, solve for x.
    8·2 answers
  • What is -2(a+b)= -2a - 2b
    5·1 answer
  • What are you required to do when you want to use a discount membership to save money?
    5·2 answers
  • Enter the correct answer in the boxes and select the corresponding number in each column.
    9·1 answer
  • Jim ate two slices of pizza, which is 25% of the pizza. How many slices were in the whole pizza?
    14·1 answer
  • The manager of Cups R’ us handed out 125 coupons to his customers on Monday, c coupons in Tuesday, and 220 coupons on the Wednes
    12·1 answer
  • Factoring Polynomials Completely (step by step) Brainliest+thanks+5 stars
    10·1 answer
  • Vanessa sold a vehicle and earned a 22%
    10·1 answer
  • How to graph linear standard 3x−4y=24
    8·1 answer
  • Which statement best defines perpendicular lines?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!