Answer:
We reject H₀, we have enough evidence to support the claim that the porcentage of residents who favor construction is over 35%
Step-by-step explanation:
Sample size n = 1300
Sample proportion p = 38 % = 0,38 then q = 62% q = 0,62
The size of the sample is enough to consider the binomial distribution can approximate to normal distribution
p*n = 1300*0,38 q*n = 1300*0,62
p*n > 10 q*n> 10
Population proportion 35% p₀ = 35 % p₀ = 0,35
Hypothesis Test :
Null Hypothesis H₀ p = p₀
Alternative Hypothesis Ha p > p₀
The hypothesis test is a one-tail test to the right
Significance Level α = 0,05 we go to z-table and find z(c)
z(c) = 1,64
To calculate z(s)
z(s) = ( p - p₀ ) / √ p*q/ n
z(s) = 0,38 - 0,35 / √ ( 0,38 * 0,62) / 1300
z(s) = 0,03 / 0,013
z(s) = 2,307
Comparing z(c) and z(s)
z(s) > z(c) 2,307 > 1,64
z(s) is in the rejection region for H₀, we must reject H₀
We have enough evidence to support the claim
On what interval(s) of x does f have positive concavity?
On what interval(s) of x does f have negative concavity?
Answer:
-5 that oneeksssoossdos
(3x² + 2x – 4)–(2x²+x-1)
solve the polynomial
Answer:
x ^2+x-3
Step-by-step explanation:
X/5>7 pick a solution that satisfies the inequality
-44
34
44
-34
Answer:
44
Step-by-step explanation:
44÷5 is 8.8 which is greater than 7
Answer:
x=44
Step-by-step explanation:
Divide each number by 5
-44/5 = -8.8
34/5 = 6.8
44/5=8.8
-34/5=-6.8
8.8 is the only one greater than 7 so 44 is the only one that satisfies the inequality
A consumer testing service is commissioned to rank the top 3 brands of laundry detergent. A total of 10 brands are to be included in the study. In how many ways can the consumer testing service arrive at the final ranking
Answer:
120ways
Step-by-step explanation:
This question bothers combination. Combination has to do with selection.
Given
Total number of brands = 10
If we the service is to rank the top 3, this can be done in 10C3 number of ways.
10C3 = 10!/(10-3)!3!
10C 3 = 10!/7!3!
10C3 = 10*9*8*7!/7!3!
10C3 = 10*9*8/6
10C3 = 720/6
10C3 = 120
Hence it will take 120ways for the consumer testing service to arrive at the final ranking
E
Learning Task 2: Solve each proportion. Write your answer in your notebook
=
1) 5/12 = 35/n
2) n/52 = 180/ 120
3) 18/n = 21/28
4) n/4 = 24/6
5) 10/16 = n/56
11
PIVOT 4A CALABARZON Math G6
Answer:
1) [tex]n = 84[/tex]
2) [tex]n = 78[/tex]
3) [tex]n = 24[/tex]
4) [tex]n = 16[/tex]
5) [tex]n = 35[/tex]
Step-by-step explanation:
To solve each proportion, we apply cross multiplication.
Question 1:
[tex]\frac{5}{12} = \frac{35}{n}[/tex]
[tex]5n = 35*12[/tex]
Simplifying both sides by 5
[tex]n = 7*12 = 84[/tex]
Question 2:
[tex]\frac{n}{52} = \frac{180}{120}[/tex]
[tex]120n = 52*180[/tex]
Simplifying both sides by 20
[tex]6n = 52*9[/tex]
Simplifying by 3
[tex]2n = 52*3[/tex]
Simplifying by 2
[tex]n = 26*3 = 78[/tex]
Question 3:
[tex]\frac{18}{n} = \frac{21}{28}[/tex]
[tex]21n = 18*28[/tex]
Simplifying both sides by 7
[tex]3n = 18*4[/tex]
Simplifying both sides by 3
[tex]n = 6*4 = 24[/tex]
Question 4:
[tex]\frac{n}{4} = \frac{24}{6}[/tex]
[tex]\frac{n}{4} = 4[/tex]
[tex]n = 16[/tex]
Question 5:
[tex]\frac{10}{16} = \frac{n}{56}[/tex]
[tex]16n = 56*10[/tex]
Simplifying by 2, both sides
[tex]8n = 56*5[/tex]
Simplifying by 8, both sides
[tex]n = 7*5 = 35[/tex]
The given expressions can be evaluated by using the arithmetic operations in order to find the value of 'n' in each case.
1) 5/12 = 35/n
Cross multiply in the above expression.
5n = 35 [tex]\times[/tex] 12
Further, simplify the above expression.
n = 84
2) n/52 = 180/120
Cross multiply in the above expression.
180n = 120 [tex]\times[/tex] 52
180n = 6240
Divide 180 by 6240 in the above expression.
n = 34.67
3) 18/n = 21/28
Cross multiply in the above expression.
18 [tex]\times[/tex] 28 = 21n
504 = 21n
Divide 504 by 21 in the above expression.
n = 24
4) n/4 = 24/6
Cross multiply in the above expression.
6n = 24 [tex]\times[/tex] 4
6n = 96
Divide 96 by 6 in the above expression.
n = 16
5) 10/16 = n/56
Cross multiply in the above expression.
10 [tex]\times[/tex] 56 = 16n
560 = 16n
Divide 560 by 16 in the above expression.
n = 35
For more information, refer to the link given below:
https://brainly.com/question/13101306
Evaluate 2xcubed if x= 3/4
9514 1404 393
Answer:
27/32
Step-by-step explanation:
2x³ for x = 3/4 is ...
2(3/4)³ = 2·3³/4³ = 2·27/64 = 27/32
In Jamie's closet the ratio of pairs of boots to pairs of sneakers is 3:6. If she has 6 more pairs of sneakers
than boots, how many pairs of boots does she have?
What does 9 + 15 = in distributive property to factor out the greatest common factor?
Answer:
3(3+5)
Step-by-step explanation:
first, you have to find the greatest common factor of 9 and 15, which is 3.
then, you have to do:
9/3 = 3
15/3 = 5
so if you factor out the 3, you get 3(3 + 5)
Which graph represents -
Answer:
3rd
Step-by-step explanation:
Find all the solutions in the interval [0,2π)
sin²x = 2-2cosX
Step-by-step explanation:
sin²x = 2 - 2cosx
1 - cos²x = 2 - 2cosx (because sin²x + cos²x = 1)
cos²x - 2cosx + 1 = 0
(cosx - 1)² = 0
cosx - 1 = 0
cosx = 1
Hence x = 0.
You work on a concrete crew starting a construction project. Once the pouring begins, it must continue non-stop until it is completed. Your crew will work an 8-hour shift along with two other crews. The total project requires 175,000 yards of concrete. Your supervisor estimates that each crew will pour around 1200 yards per hour. How many consecutive days should you plan to work on this project?
Answer:
I believe it is 6 days.
The total number of days all crew needs to pour concrete is 6 days consecutive.
Work-day based problem:What information do we have?
Total number of crew = 3
Total yards = 175,000
Each crew pour concrete per hour = 1200
Total concrete pour per day = 1200 × 3 × 8
Total concrete pour per day = 28,800 yard
Total number of days crew pours concrete = Total yards / Total concrete pour per day
Total number of days crew pours concrete = 175,000 / 28,800
Total number of days crew pours concrete = 6.076
Total number of days crew pours concrete = 6 days
Find out more information about 'Yards'.
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A $450 washing machine is on sale for 15% off.
What is the discount?
What is the sale price?
What is the total price including the 7% sales tax
need help before next semester
Answer:
15/100 * 450 = 67.5 (discount)
450 - 67.5 = 382.5 (sale price)
7/100 * 382.5 = 26.775 (7% tax)
26.775 + 382.5 = 409.275 (final price)
Step-by-step explanation:
Devery needs to read 36 pages by Friday. He read 10 on Tuesday and 15 on Wednesday. How many pages does he need to read on Thursday in order to read 26 pages by Friday?
Answer:
11
Step-by-step explanation:
i am assuming that its a typo and you meant 36
Answer:
Originally, you put 36..but 2nd you put 26... so ill answer both :) for a total of 36 Devery needs to read 11 more pages and for a total of 26, Devery needs to read one page
Step-by-step explanation:
10+15=25 36-25=11
10+15=25 26-25=1
My apologise for not understanding the question fully, English isnt my first language :)
Lines with the same slope and a different y intercept never intersect.
TRUE OR FALSE?
Answer:
True
Step-by-step explanation:
Lines with the same slope and different y-intercepts are considered parallel. As they extend forever, the lines will never intersect.
what is 0.83 x 52 can someone show me how to get it
Answer:
= 43.16
Step-by-step explanation:
1. 83 x 52
2. = 4,316
3. There are 2 numbers after the decimal
4. you add the decimal the number of times the decimal is away from the number before
Answer:
43.16
Step-by-step explanation:
Look at the attached image. We multiply 83 and 52. Once we get our answer, we move our decimal point two places to the left (since .83 has its decimal moved two places to the left).
A group of friends were working on a student film that had a budget of $700. They
used $469 of their budget on props. What percentage of their total budget did they
spend on props?
Answer:
231
Step-by-step explanation:
subtract 700 by 469
What is the solution to the linear equation?
2/5+p=4/5+3/5p
Answer:
p=1
Step-by-step explanation:
Rearrange terms
Combine multiplied terms into a single fraction
Subtract 2/5 from both sides of the equation
Simplify
Multiply all terms by the same value to eliminate fraction denominators
sorry if its wrong
For what value of x do the two ratios suggest a proportional relationship?
14 to 4; x to 52
Choose the correct answer below.
A. 182
B. 13
C. 208
D. 56
Can somebody please help me with this question
Answer:
number 2
Step-by-step explanation:
A cougar did not attack to the victim.ibthinj this is answer
What is the value of x in the solution to this system of equations?
In a class of 125 students, 28 are computer science majors, 52 are mechanical engineering majors, 12 are civil engineers and the rest are general engineering majors. Assume students only have one major. If a student is chosen at random what is the probability they are:
Answer:
The probability none mechanical engineering majors is 0.03967.
Step-by-step explanation:
Given that,
Total students = 125
Number of students in computer science = 28
Number of students in mechanical engineering = 52
Number of students in civil engineering= 12
Suppose six students from the class are chosen at random what is the probability none are mechanical engineering majors?
We need to calculate the probability none are mechanical engineering majors
Using given data
None mechanical engineering majors = [tex]\dfrac{125-52}{125}=0.584[/tex]
If six students from the class are chosen at random then
The probability none are mechanical engineering majors will be
[tex]P_{nme}=(0.584)^6[/tex]
[tex]P_{nme}=0.03967[/tex]
Hence, The probability none mechanical engineering majors is 0.03967.
Which equation is not a linear function? Question 2 options: A) y = –3x – 7 B) 2x + 4y – 12 = 0 C) 6x + 4y = 8 D) 2x2 – 3y = 9
Answer:
A libear equation has no x^2. Therefore it would be D since it does have an x^2
Answer:
The answer is A
Y= -3x - 7
let f(x)=4x+1 and g(x)3x+k find value of k if fog(x)=gof(x)
Answer:
[tex]\huge\boxed{k=\dfrac{2}{3}}[/tex]
Step-by-step explanation:
[tex]f(x)=4x+1\\\\g(x)=3x+k\\\\(f\circ g)(x)=f\bigg(g(x)\bigg)=4(3x+k)+1=(4)(3x)+(4)(k)+1=12x+4k+1\\\\(g\circ f)(x)=g\bigg(f(x)\bigg)=3(4x+1)+k=(3)(4x)+(3)(1)+k=12x+3+k\\\\(f\circ g)(x)=(g\circ f)(x)\iff12x+4k+1=12x+3+k\qquad|\text{cancel}\ 12x\\\\4k+1=3+k\qquad|\text{subtract 1 from both sides}\\\\4k=2+k\qquad|\text{subtract}\ k\ \text{from both sides}\\\\3k=2\qquad|\text{divide both sides by 3}\\\\k=\dfrac{2}{3}[/tex]
please answer for branliest quick
Answer:
18 square units :)
Answer:
18
ummmmmm so yea
What is the area of the triangle?
8
4
5
Answer:
16
Step-by-step explanation:
1/2 (perpendicular height × base)
1/2(4×8)
2×8
=16
3÷657 using partial products
Answer:
219
Step-by-step explanation:
I need the simplified expression for this please
Answer:
9x-3
Step-by-step explanation:
3(2x-1)+3x
The first thing you would want to do is to distribute 3(2x-1) or in other words to get rid of the parenthesis.
3(2x-1) = 6x-3
The expression so far is : 6x-3+3x
Now you would add like terms which are the 6x and 3x = 9x
Expression now: 9x-3
The final answer is 9x-3.
If you are wondering why this is the answer because you can’t solve an (x) from a number because they are not like terms.
Hope this helps!
Which is the graph of the given function?
F(t)=4sin(3t)
Answer:
It's D or A
Step-by-step explanation:
500,000+8,000+300+60+4 in number form
Answer:
508,364
Step-by-step explanation:
just add them together :)
18. If x + y = a, y + z = b and z + x = c, the average
of x, y
and z is:
Answer:
AC
Step-by-step explanation:
x y=a
z+x=c
hope this help