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
deff fn [24]
3 years ago
14

Can you help me solve this please

Mathematics
1 answer:
Gekata [30.6K]3 years ago
4 0

Answer:

4

Step-by-step explanation:

You might be interested in
5.1(3 + 2.2x) > –14.25 – 6(1.7x + 4)?
MaRussiya [10]

Answer:

x > -2.5

Step-by-step explanation:

1) 5.1 (3 + 2.2x) > -14.25 - 6 (1.7x + 4)

2) 15.3 + 11.22x > -14.25 - 10.2x - 24

3) 15.3 + 11.22x > -38.25 - 10.2x

4) 11.22x + 10.2x > -38.25 - 15.3

5) 21.42x > -53.55

6) x > -2.5

Alternate forms

x > -5/2x or x > -2 1/2

5 0
3 years ago
Please help! super urgent!
Sindrei [870]

Answer:

A. square root of 3 times 5

Step-by-step explanation:

4 0
3 years ago
Zoey earns $20 an hour babysitting plus a $5 flat rate for gas. how many hours must Zoey work to earn at least $125​
AleksAgata [21]

Answer:

6 hours

Step-by-step explanation:

20(for babysitting)*6=120

120+5 (for gas)=125

$125=6 hours of babysitting

5 0
3 years ago
I need help with question 3 ? Not really sure how to go about it
Zepler [3.9K]
Place an imaginary dot at 0,0. after that go five lines to the right, then 3 lines down. That spot would be at 5,-3.
4 0
4 years ago
Annual starting salaries in a certain region of the U. S. for college graduates with an engineering major are normally distribut
defon

Answer:

0.8665 = 86.65% probability that the sample mean would be at least $39000

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 normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, 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.

Mean $39725 and standard deviation $7320.

This means that \mu = 39725, \sigma = 7320

Sample of 125:

This means that n = 125, s = \frac{7320}{\sqrt{125}} = 654.72

The probability that the sample mean would be at least $39000 is about?

This is 1 subtracted by the pvalue of Z when X = 39000. So

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

By the Central Limit Theorem

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

Z = \frac{39000 - 39725}{654.72}

Z = -1.11

Z = -1.11 has a pvalue of 0.1335

1 - 0.1335 = 0.8665

0.8665 = 86.65% probability that the sample mean would be at least $39000

4 0
3 years ago
Other questions:
  • the lengths of the sides of a triangle are in the ratio of 5:3:4. The perimeter of the triangle is 156cm. Find the length of the
    14·1 answer
  • 42/15•3/7<br> need help multiplying this
    12·1 answer
  • 19) Suzy is covering a wall with wall paper. If theshaded part of the figure below represents herwall, how much wallpaper should
    11·1 answer
  • Which expression or expressions have the same value as 12 2?
    6·1 answer
  • What is four plus eight
    8·2 answers
  • Tomen puntos y doy corona al primero que comente hola
    5·2 answers
  • What is the area of the rhombus?<br> (3,7)<br> (-2,-1)<br> (8, -1)<br> (3,-9)
    5·2 answers
  • There are 12 dozen pencils in a gross. how many pencils are in 15 gross
    7·1 answer
  • Round 3,996 to the nearest ten thousand
    13·1 answer
  • Define the set X = {(x,y)|x &gt; 0,y ≤ √x}.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!