For number 4,
You need to convert the decimal to a percentage. To do this, you would move the decimal over 2 spaces to the right. So it would then become 32.5%. If you were trying to convert a percent to a decimal, you would move the decimal over 2 spaces to the left.
Answer: For the first one , the answer is 15 , the equation is 75=2f+2(2f-7.5)
For the Callie question , the answer is 20 , the equation is 110=2f+2(2f-5)
The third answer is 23 and the equation is 144=2(2w+3)+2w
Step-by-step explanation:
Answer:
The 95 % confidence intervals (653.3 , 657.0) for the population mean test score
Step-by-step explanation:
Given school districts n = 420
The average score (Population mean) μ = 655.2
and standard deviation σ = 19.1
The 95% of confidence intervals μ± 1.96 σ/√n
The 95% of confidence intervals (μ- 1.96 σ/√n , μ+ 1.96 σ/√n)
The 95% of confidence intervals
( () ,
(655.2-1.826 , 655.2+1.826)
(653.3 , 657.0)
<u>Conclusion</u>:-
The 95 % confidence intervals (653.3 , 657.0) for the population mean test score
Answer:
Correct answer: (x-√2)² + (y-√5)² = 3
Step-by-step explanation:
Given data: Center (x,y) = (√2,√5) and r = √3
The canonical or cartesian form of the equation of the circle is:
( x-p )² + ( y-q )² = r²
Where p is the x coordinate of the center, q is the y coordinate of the center and r is the radius of the circle.
God is with you!!!
Answer:
£36
Step-by-step explanation:
From the question, we are told that School allots £3000 to spend on a trip to the theatre. With regular cost of tickets of £40 each with offer for 1/5 off
Then the cost of each ticket with 1/5 off= (4/5×40)= £32
From the question, A train ticket for the day will cost £20 each.
Then total cost for each of it = £32+£20
=£52
To determine how much money that the school will have left over, If 3 teachers and the maximum number of students attend, can be expressed below by first calculating the number of students.
Let us denote the number of students as "x"
52(x+3)= < 3000
52x + 156 =< 3000
52x =< 3000 - 156
52x =< 2844
X =< 2844/52
s =< 54.69,
The max. Number of students is 54
Total number of people= Number of students + the 3 teachers
= 54+3= 57
Total cost for 57 people= (£52 × 57 people)= £2964
The amount of money the school will have as left over = (£3000 - £2964)
= £36