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
In-s [12.5K]
3 years ago
9

2.4x-9.1x+12.5x=-39.44

Mathematics
2 answers:
ddd [48]3 years ago
7 0

Answer:

Step-by-step explanation:

Combine like terms:

5.8x = 39.44

Divide both sides by 5.8

Answer is -6.8

wolverine [178]3 years ago
5 0

Answer:

x =  - 6.8

Step-by-step explanation:

1. \: 5.8x =  - 39.44 \\ 2. \: x =  -  \frac{39.44}{5.8}  \\ 3. \: x =  - 6.8

You might be interested in
You want to estimate the probability that a lightbulb of a famous brand will last more than 6.500 hours. You choose 10,000 bulbs
brilliants [131]

Answer/Step-by-step explanation:

(a) The likelihood function to estimate this probability can be written as:

mat[1000, 9800]p9580(1 - p)420

(b) The value of the maximum likelihood estimate of the probability 0.958(By taking log of expression in (a) above)

(c) when the true probability is 98%, then it implies that 9800 of 10,000 bulbs did last over 6500hours.

Therefore, the likelihood is p(9800) = mat[10000, 9800]p9800(1 - p)200

(d) Method of moments estimate is the estimation of all the parameters of the population sample.

(e) The statement is FALSE because estimates by the method of moments are not necessarily sufficient statistics, because sometimes fail to take into account all relevant information in the sample. As in the above question

4 0
3 years ago
Joe used a project management software package and has determined the following results for a given project.: Expected completio
statuscvo [17]

Answer:

0.1151 = 11.51% probability of completing the project over 20 days.

Step-by-step explanation:

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.

Expected completion time of the project = 22 days.

Variance of project completion time = 2.77

This means that \mu = 22, \sigma = \sqrt{2.77}

What is the probability of completing the project over 20 days?

This is the p-value of Z when X = 20, so:

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

Z = \frac{20 - 22}{\sqrt{2.77}}

Z = -1.2

Z = -1.2 has a p-value of 0.1151.

0.1151 = 11.51% probability of completing the project over 20 days.

4 0
3 years ago
The _____ in scientific notation tells you how many places to move the decimal point.
victus00 [196]
The exponent tells you how many places to move.
3 0
3 years ago
What's (X+3 (X+5) it's really confusing me and I need some help please
notsponge [240]
Well when you see parentheses set up like these together that automatically means to multiply. The solution is:
<span>Apply the FOIL method: <span>(a+b)(c+d)=ac+ad+bc+bd</span>
</span><span><span>x2</span>+5x+3x+15</span>
 <span>Simplify
</span><span><span><span>x2</span>+8x+15</span></span>
5 0
3 years ago
Every quadrilateral is a rectangle
jarptica [38.1K]
No because there can be different shapes
7 0
3 years ago
Other questions:
  • A spinner has four sections lettered A, B, C, and D. The table shows the results of several spins. Find the experimental probabi
    15·2 answers
  • Y ≤ -2x + 4. What points satisfy the inequality?
    14·1 answer
  • Write the quadratic equation in general quadratic form below.<br><br> 17x2 = 12x
    6·2 answers
  • Mary went to 2 baseball games this year she went to 5 games last year how many baseball games did Mary go to in total ​
    11·2 answers
  • 3/7x=2<br> What's x?<br> Please answer ASAP
    9·1 answer
  • Nadir saves $1 the first day of a month, $2 the second day, $4 the third day, and so on. He continues to double his savings each
    13·1 answer
  • Use the image to help you answer these question slides 2. Angles g and f are:
    9·1 answer
  • X2 - 2xy + y2 when x = 3 and y = 2​
    10·2 answers
  • 1. What is the Area of the rectangle in terms of X?<br> 2. What is the value of X?
    9·1 answer
  • Please help with math problem
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!