Answer:
7.6ft
Step-by-step explanation:
Answer:
7.6
Step-by-step explanation:
3.8 + 3.8 = 7.6
The radius of a circle is half of the diameter
The radius is half of the circle length and the diameter is the whole length
remember that :)
30 points! Need help ASAP!
You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that a prior survey suggests that about 22% of air passengers prefer an aisle seat. Assume that you want to be 98% confident that the sample percentage is within 5.1 percentage points of the true population percentage.
Answer:
358 randomly selected air passengers must be surveyed.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which
z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].
The margin of error is given by:
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
98% confidence level
So [tex]\alpha = 0.02[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.02}{2} = 0.99[/tex], so [tex]Z = 2.327[/tex].
Assume that a prior survey suggests that about 22% of air passengers prefer an aisle seat.
This means that [tex]\pi = 0.22[/tex]
How many randomly selected air passengers must you survey?
We need a sample of n, and n is found for which [tex]M = 0.051[/tex]. So
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
[tex]0.051 = 2.327\sqrt{\frac{0.22*0.78}{n}}[/tex]
[tex]0.051\sqrt{n} = 2.327\sqrt{0.22*0.78}[/tex]
[tex]\sqrt{n} = \frac{2.327\sqrt{0.22*0.78}}{0.051}[/tex]
[tex](\sqrt{n})^2 = (\frac{2.327\sqrt{0.22*0.78}}{0.051})^2[/tex]
[tex]n = 357.2[/tex]
Rounding up
358 randomly selected air passengers must be surveyed.
If the distance from point P to point L is the same as the distance from point P to point C, then P is on
Answer:
This answer is C, it is on the perpendicular bisector of segment LC.
Draw any line segment P and L, then another point C anywhere, but the length needs to be the same as PL. You will note that LC (if you connect those points) will become the perpendicular bisector to point P.
I hope that makes sense.....
Step-by-step explanation:
Pls help me with math ASAP
Answer:
Its c
Step-by-step explanation:
Need this quick please!
Select the correct answer.
1+ 3
Which expression is equivalent to 12 - 21
-
12 + 21 - 3
I +1 if no denominator equals zero?
3
O A
o
B.
1
12 – 21 – 3
1
12 – 40 + 3
1
12 + 2.1 – 3
I + 3
1+1
OC.
OD
Answer:
C is the answer i think
Step-by-step explanation:
The Martin family's truck gets an average of 24 miles per gallon. Predict how many miles they can drive using 5 gallons of gas.
Answer:
120 miles
Step-by-step explanation:
just take 24*5 to get how many miles they can travel which would be 120 miles
Help!!
A class rolled number cubes. Their results are shown in the table.
What is the experimental probability of rolling a number less than 5?
67.8%
49.5%
34.4%
84.7%
Answer:
A. 67.8%
Step-by-step explanation:
the total number of occurences are 202
Now the total number of occurencess for 4 and below are 137
So Heres the quickest way to do it: Divide 137 by 202 then multiply it by 100 being 100%
Then you would get 67.8, then well put the percent sign behind it.
Help me please omg. Am having trouble with this.
Answer:
Part A 225-81=144
Step-by-step explanation:
1. 15×15 =225
2. 3×3×3×3 =81
For the equation y = - 3x + 2 2. determine the value of y when x = 2?
Answer:
y=16
Step-by-step explanation:
x=2
y=-3x+22
y=-3(2)+22 then y=-6+22, y=16
What number can be a common denominator for 3/4 and 1/8
Answer:
8
Step-by-step explanation:
3/4 = 6/8
Answer:
of course8 cause common can be like
4×27 - 2x - 5y=-7
3x + 4y = 7
"Hunter read 40 pages in his history book in
one hour.
Rate of change is
Simplify the rational expression by rationalizing the denominator √15/√6x
Answer:
√10/2x
Step-by-step explanation:
Multiply by √6 on the top and bottom to rationalize the denominator.
(√15×√6)/(√6x×√6) = √90/6x = (√9×√10)/6x = 3√10/6x = √10/2x
Howard buys a new comforter set for 15% off the original price of 54$.What is the sale price?
Answer:
$45.90
Step-by-step explanation:
What 15% off means is 85% of the original price ($54). 85% is the same as 17/20. Multiply 17/20 by 54 (or multiply 3/20 by 54 and subtract that from 54) to get the sale price.
(17 * 54)/20 (Multiply 17 by 54)
918/20 (Reduce if needed)
459/10 (Divide 459 by 10)
45.9
The sale price of the comforter is $45.90.
15 POINTS!!!IF YOU HELP ME!!!
1. A shopper bought a 10-pound bag of apples for $12.50. What was the unit price? Show your work. A $0.63 C $6.25 B $1.25 D $12.50
Put the following fractions in their simplest forms.
6/9
11/88
The train station clock runs too fast and gains 5 minutes every 3 days.
How many minutes and seconds will it have gained at the end of 7 days?
9514 1404 393
Answer:
mm:ss = 11:40
Step-by-step explanation:
We assume the amount of gain is proportional to the time that passes.
g/7 = 5/3
g = 7(5/3) = 35/3 = 11 2/3 . . . . minutes
The clock will have gained 11 minutes and 40 seconds after 7 days.
Click the picture
Giving brainlist
Answer:
5
The value of y is also 5!
The value of pair (x,y) is (5,5)
Hopefully this helped! :D
-LavenderVye
x^3 + 5x^2 + 2x + 10 = 0
Let's solve your equation step-by-step.
x3+5x2+2x+10=0
Step 1: Factor left side of equation.
(x+5)(x2+2)=0
Step 2: Set factors equal to 0.
x+5=0 or x2+2=0
x=−5
Answer:
x=−5
160% of 30
I’ve been stuck on this question for hours I REALLY need help
Answer:
The answer is 48
Step-by-step explanation:
160% is the same as 1.60
A percent of something means you have to multiply them together
1.60 times 30=48
Hope this helps!!
10 POINTS
8TH GRADE MIDDLE SCHOOL MATH
Answer:
first one is the answer to this
Step-by-step explanation:
There are five boys to every nine girls in an introductory engineering course .if there are 364 students enrolled in the course , how many are boys ?
Answer:
234
Step-by-step explanation:
So what we know is that
5x+9x= students
This equation is saying that for every 5 boys there are 9 girls
we can then plug in 364 for the number of students and add like terms
This means that 14x=364
this means that x=26
This means that there are 26 sets of 5 boys and 9 girls
this means that there are
130 boys
234 girls
PLZ HELP ME WITH MY HW?????
Answer:
Uh 7/24?
Step-by-step explanation:
Just doing this in my head fyi lol
The data distribution is ___
Answer:
skewed left
Step-by-step explanation:
PLZ HELP BRAINLIEST
Create a scenario that requires use of the Fundamental Counting Principle to find the probability. Calculate the probability.
Answer:
see explanation below
Step-by-step explanation:
You have three pairs of shoes (white, brown, and black), and you have 6 pairs of pants ( brown, blue, grey, white, sand, and black)
We use the Fundamental Counting Principle to find the number of possible pant-shoe combinations:
3 * 6 = 18
then we can find the probability of wearing by random selection brown shoes with either blue or grey pants:
prob (brown shoes & blue pants) + prob (brown shoes & grey pants) =
= 1/18 + 1/18 = 2/18 = 1/9
Please answer this correctly without making mistakes
Answer:
1 mi 1927 ft
Step-by-step explanation:
Turn everything into feet:
5mi x 5280 ft/1 mi = 26,400ft + 1,348 ft = 27, 748 ft
3mi x 5280 ft/1 mi = 15,840ft + 4,701 ft = 20,541 ft
Do the subtration that the problem wants you to do:
27, 748 ft - 20,541 ft = 7,207 ft
Turn the answer into mi & ft:
7,207 ft - 5280 ft = 1927 ft
=
1 mi 1927 ft
Help plz will give brainliest!
Answer:
ExponentialStep-by-step explanation:
I have 1 litre of water in a jug. On the way to my table I spill some. I have 780ml left. How much have I lost?
Step-by-step explanation:
1 litre = 1000ml
780ml left
lost amount = 1000 - 780 = 220ml
A 16-foot ladder must reach 13 feet up a building. What's the measure of the angle
that the ladder makes with the ground?
OA) 39.090
OB) 3.6°
C) 54.34°
D) 35.66°
The correct answer is C) 54.34°.
Phil bought two hamburgers and a milk shake
for $10.30. Janice bought three hamburgers and
a milk shake for $14.80. What is the cost of the
two milk shakes?
A. $1.30
B. $1.45
C. $2.60
D. $4.50
Answer:
C.
Step-by-step explanation:
[tex]\left \{ {{2x+y=10,3} \atop {3x+y=14,8}} \right.[/tex]
[tex]\left \{ {{y=10,3-2x} \atop {y=14,8-3x}} \right.[/tex]
10,3-2x=14,8-3x
x=4,5 - one hamburger
y=1,3 - one milk shake
OR:
$14,8-$10,3=$4,5 - one hamburger
2*4,5+y=10,3
y=1,3 - one milk shake
2y=2,6
