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
stira [4]
3 years ago
7

I wrote it down better

Mathematics
2 answers:
lara31 [8.8K]3 years ago
6 0
1 .
4 divide 2= 2
2+2( 4x3)^2
= 2 + (8x6)^2
= 2+ 48^2
= 2+2034
= 2036


Elenna [48]3 years ago
4 0
number one is 280 because 4/2 is 2 + 2 is 4 then you multiply 7 and that is 28 ^ 2 which is 280
You might be interested in
Suppose a batch of metal shafts produced in a manufacturing company have a population standard deviation of 1.3 and a mean diame
lbvjy [14]

Answer:

54.86% probability that the mean diameter of the sample shafts would differ from the population mean by more than 0.1 inches

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this problem, we have that:

\mu = 208, \sigma = 1.3, n = 60, s = \frac{1.3}{\sqrt{60}} = 0.1678

What is the probability that the mean diameter of the sample shafts would differ from the population mean by more than 0.1 inches

Lesser than 208 - 0.1 = 207.9 or greater than 208 + 0.1 = 208.1. Since the normal distribution is symmetric, these probabilities are equal, so we find one of them and multiply by 2.

Lesser than 207.9.

pvalue of Z when X = 207.9. So

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{207.9 - 208}{0.1678}

Z = -0.6

Z = -0.6 has a pvalue of 0.2743

2*0.2743 = 0.5486

54.86% probability that the mean diameter of the sample shafts would differ from the population mean by more than 0.1 inches

6 0
3 years ago
A cell phone company has a basic monthly plan of $40 plus $0.45 for any minutes used over 700. Before receiving his statement, J
Serga [27]

Ok so we know he used over 700 because he was charged more than 40. Then we take the $8.10 and divide 0.45 into it. This then gives you 18 more minutes. Then add 18 to 700 and you get 718 min.
4 0
3 years ago
<img src="https://tex.z-dn.net/?f=938%20%5Ctimes%206" id="TexFormula1" title="938 \times 6" alt="938 \times 6" align="absmiddle"
Assoli18 [71]

938* 6=

5628

The answer s 5628

6 0
3 years ago
Read 2 more answers
the width of a rectangle is 5 inches and the height is 10 inches what is the perimeter of the shaded rectangle
andrew-mc [135]
So, you should add the heighth twice and add the width twice too, then add those two together to get your answer.
7 0
2 years ago
Read 2 more answers
Caleb wants to rent a kayak. Kayak rentals cost $14.50 for half an hour. If Caleb rents a kayak for a hour and forty-five minute
butalik [34]
14.50 x 2 (2 1/2 hours = 1 hour) = $29.00 + $14.50 (for another 1/2 an hour) = $43.50. Then, divide 14.50 in half for the other 15 minutes that weren't accounted for yet, so: $14.50/2 = $7.25 then add it to our previous total: $43.50 + $7.25 = $50.75 is your answer :) Hope I helped 
7 0
2 years ago
Read 2 more answers
Other questions:
  • Help pleaseeeeeeeeeee
    15·1 answer
  • gerald spent $5.12 for a drink and a sandwich his drink cost $1.30 did he have a ham sandwich for $3.54 a tuna sandwich for $3.8
    7·2 answers
  • Corey and Jack share money in the ratio of 8 : 5If Jack has $75 how much does Corey have?
    5·1 answer
  • PLEASE HELP!!
    5·2 answers
  • How much can Sophia spend on party favors
    9·1 answer
  • How to rewrite 4 x parentheses 25 + 4 parentheses
    12·1 answer
  • The measure of angle 1 is 6x - 2 and the measure of angle 2 is 5 x + 4 find X
    8·1 answer
  • CLICK HERE IF YOU HAVE BIG BRAIN
    11·1 answer
  • Please help! Write the intervals of the values shown on the graph below
    7·1 answer
  • Find a 3-by-3 magic square using the numbers 5, 7, 9, 13, 15, 17, 21, 23, and 25.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!