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
tia_tia [17]
3 years ago
6

Plz help me on this i dont know how to do this!!!

Mathematics
2 answers:
LUCKY_DIMON [66]3 years ago
8 0

Answer:

x = -4

Step-by-step explanation:

Nikitich [7]3 years ago
7 0

Whàt PDF ✌✌✌✌✌✌✌✌✌✌✌✌✌✌✌✌✌✌✌✌✌

You might be interested in
diane charges $10 for a house call plus $35 an hour for electrical work. if she made $150 on one job,how many hours did she work
salantis [7]
The equation would be 35x +10 = 150
35x =140 (subtraction property)
x = 4
Answer: she worked for 4 hours
8 0
3 years ago
Read 2 more answers
PLZ HELP! Use technology or a z-score table to answer the question.
Rashid [163]

Answer:

the answer would be A, or 5.3%

Step-by-step explanation:

you start by finding the z-score of 200, so 200-144.05 = 55.95/34.52 = 1.62 (rounded to the nearest ) Then you use a z-score table to find the probability that a customer will spend less than 200 dollars and subtract the decimal probability from one. then you convert the decimal probability to a percent and get 5.3%.

7 0
2 years ago
A simulation was conducted using 10 fair six-sided dice, where the faces were numbered 1 through 6. respectively. All 10 dice we
kompoz [17]

Answer:

C) a sample distribution of a sample mean with n = 10  

\mu_{{\overline}{X}} = 3.5

and \sigma_{{\overline}{Y}} = 0.38

Step-by-step explanation:

Here, the random experiment is rolling 10, 6 faced (with faces numbered from 1 to 6) fair dice and recording the average of the numbers which comes up and the experiment is repeated 20 times.So, here sample size, n = 20 .

Let,

X_{ij} = The number which comes up  on the ith die on the jth trial.

∀ i = 1(1)10 and j = 1(1)20

Then,

E(X_{ij}) = \frac {1 + 2 + 3 + 4 + 5 + 6}{6}

                            = 3.5       ∀ i = 1(1)10 and j = 1(1)20

and,

E(X^{2}_{ij} = \frac {1^{2} + 2^{2} + 3^{2} + 4^{2} + 5^{2} + 6^{2}}{6}

                                = \frac {1 + 4 + 9 + 16 + 25 + 36}{6}

                                = \frac {91}{6}

                                \simeq 15.166667

so, Var(X_{ij} = (E(X^{2}_{ij} - {(E(X_{ij})}^{2})

                                    \simeq 15.166667 - 3.5^{2}

                                    = 2.91667

   and \sigma_{X_{ij}} = \sqrt {2.91667}[/tex                                            [tex]\simeq 1.7078261036

Now we get that,

 Y_{j} = \frac {\sum_{j = 1}^{20}X_{ij}}{20}

We get that Y_{j}'s are iid RV's ∀ j = 1(1)20

Let, {\overline}{Y} = \frac {\sum_{j = 1}^{20}Y_{j}}{20}

      So, we get that E({\overline}{Y}) = E(Y_{j})

                                                                 = E(X_{ij}  for any i = 1(1)10

                                                                 = 3.5

and,

       \sigma_{({\overline}{Y})} = \frac {\sigma_{Y_{j}}}{\sqrt {20}}                                             = \frac {\sigma_{X_{ij}}}{\sqrt {20}}                                             = \frac {1.7078261036}{\sqrt {20}}                                            [tex]\simeq 0.38

Hence, the option which best describes the distribution being simulated is given by,

C) a sample distribution of a sample mean with n = 10  

\mu_{{\overline}{X}} = 3.5

and \sigma_{{\overline}{Y}} = 0.38

                                   

6 0
3 years ago
Trey runs each lap in 6 minutes. He will run at least 30 minutes today. What are the possible numbers of laps he will run today?
vlada-n [284]

Answer:

5 laps

Step-by-step explanation:

30 ÷ 6 = n

n=5

8 0
3 years ago
A retailer buys a coat in bulk at a unit price of $45. The coat is marked up to 28% to sell in the store. What is the price of t
inessss [21]
The answer is $57.60

(The original price) 45+ 12.60 (28% of 45) = 57.60
6 0
3 years ago
Other questions:
  • What is 90 divided by .36
    6·1 answer
  • 43,000 rounded to the nearest thousand
    10·2 answers
  • 815 gal/h ~ Qt/sec <br><br> Convert this unit rate
    5·1 answer
  • Jada has 60% of her goal of $80 saved for her trip. If 10% x 6 = 60%, how much money does Jada have saved?
    10·1 answer
  • What if you multiply 100,900*133,133
    11·2 answers
  • What is the equation for the slope of a line
    9·1 answer
  • A rectangular prism has a length of 3 1/2 inches a width of 5 inches height of 1 1/2 inches what is the volume for the prism?
    12·1 answer
  • Write the product(2+7i)(2-7i) in the form a+bi
    11·1 answer
  • Which of the following is a factor of 6x? + 2x - 21? (1 point)
    7·1 answer
  • In a sentence.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!