Answers
try this one method. I hope it will help a little
25^2 = 625
area of circle = 3.14(r)^2
3.14(12.5)^2 (radius is half of diameter)
=490.625
divide that by 2
=245.31
subtract 625 by 245.31
=379.69
=379.7 ft^2
Related Questions
An architect built a scale model of a
sports stadium using a scale in which 3
inches represents 45 feet. The height of
the sports stadium is 180 feet. What is the
height of the scale model in inches?
FOR BRAINLIST!!
Answers
Answer:
The right answer is D ( 12 in )
3 in - - - - > 45 feet
x in - - - - > 180 feet
-----------------------------
45*x=3*180 - - > 45*x=540 - - > x=540/45=12
A customer satisfaction analyst wants to sample owners of a certain type of car to estimate what proportion of all owners are satisfied with that car. They will use the sample data to construct a one-sample z zz interval for the proportion, and they are considering two sample sizes: a large sample of n = 800 n=800n, equals, 800 for more accurate results, or a small sample of n = 200 n=200n, equals, 200 to save time and money. Assuming the sample proportion is the same in each sample, what is true about the margins of error from these two samples?
Answers
Answer: 1/2
Step-by-step explanation:
This is straight from Khan
ample size and margin of error
In a one-sample
z
zz interval for a proportion, the
margin of error
margin of errorstart text, start color #11accd, m, a, r, g, i, n, space, o, f, space, e, r, r, o, r, end color #11accd, end text is how far our interval extends above and below the sample proportion:
(
statistic
)
±
(
margin of error
)
p
^
±
z
∗
p
^
(
1
−
p
^
)
n
(statistic)
p
^
±(margin of error)
±z
∗
n
p
^
(1−
p
^
)
Since the sample size
n
nn is in the denominator, increasing the sample size will lead to a smaller margin of error.
Hint #22 / 3
Comparing sizes of margins of error
Let's look at each margin of error in terms of its sample size.
Smaller sample,
n
=
200
n=200n, equals, 200:
=
z
∗
p
^
(
1
−
p
^
)
200
error
margin of
=z
∗
200
p
^
(1−
p
^
)
start text, e, r, r, o, r, end text, start superscript, start text, m, a, r, g, i, n, space, o, f, end text, end superscript, equals, z, start superscript, times, end superscript, square root of, start fraction, p, with, hat, on top, left parenthesis, 1, minus, p, with, hat, on top, right parenthesis, divided by, 200, end fraction, end square root
Larger sample,
n
=
800
n=800n, equals, 800:
=
z
∗
p
^
(
1
−
p
^
)
800
=
z
∗
p
^
(
1
−
p
^
)
4
⋅
200
=
z
∗
1
4
⋅
p
^
(
1
−
p
^
)
200
=
1
2
⋅
z
∗
p
^
(
1
−
p
^
)
200
error
margin of
=z
∗
800
p
^
(1−
p
^
)
=z
∗
4⋅200
p
^
(1−
p
^
)
=z
∗
4
1
⋅
200
p
^
(1−
p
^
)
=
2
1
⋅z
∗
200
p
^
(1−
p
^
)
Even though
800
800800 is
4
44 times larger than the smaller sample, the margin of error from the larger sample is
1
2
2
1
start fraction, 1, divided by, 2, end fraction the margin of error from the smaller sample.
Equivalently, the margin of error from the smaller sample is
2
22 times the margin of error from the larger sample.
Hint #33 / 3
Answer
The margin of error from the larger sample will be
1
2
2
1
start fraction, 1, divided by, 2, end fraction the margin of error from the smaller sample.
Answer:
1/2
Step-by-step explanation:
again hellllllp meeee
Answers
Answer:
quadrant 2
Step-by-step explanation:
Answer:
Quadrant IV
Step-by-step explanation:
Anyone know this answer Help ASAP
Answers
Answer:
The right answer is A (x=2,y=-1)
What is the value of the x-coordinate of the vertex of the function shown
below?
f(x) = (x+6)(x - 2)
Answers
The answer is x=-2
As you could see, this is a factored function.
The un-factored version is x^2+4x-12
-b/2a=x
-4/2=-2= x of vertex
what is the square root 165
Answers
Answer:
12.8
Step-by-step explanation:
Answer:
12.8452325787
Step-by-step explanation:
Un número dividido entre 8
Answers
Answer:
What??? I cant understand
Step-by-step explanation:
Answer:
8 divided by 4 = 2
Step-by-step explanation:
A recipe calls for 3 cups of flour to make 3 dozen cookies. Use the proportion to calculate how (1 point much flour is needed to make 9 dozen cookies. 3 cups 1 cups 9 dozen 3 dozen Об cups 3.5 cups 9 cups 0 12 cups point 4. Chase sold 48 tickets to the school dance, and Justine sold 14 tickets. What is the rato, in simplest form of the number of tickets Justine sold to the number of tickets Chase sold? 7. 24 24 7
Answers
7:24
should be correct sorry if wrong
The volume of a cylinder of radius 14cm is 210cm”, what is the
curved and total surface area of the cylinder.
Answers
5km
Step-by-step explanation:
The required curved surface area =30.772 cm² and the total surface area = 1261.412 cm² for the cylinder.
The volume of a cylinder of radius 14cm is 210cm².
curved and total surface area to be determined.
The cylinder is defined as a 3D solid that keeps two identical bases joined by a curved surface, at a certain distance.
Here, Volume of cylinder(V) = 210 cm²
V=πr2h
h = V/πr2
h = 210/π*14²
h = 0.34105
Area of curved surface = 2πr*h
= 2*3.14*14*0.34
= 30.772 cm²
The total surface area of the cylinder,
A = 2πrh+2πr²
A = 2*π*14*0.34+2*π·*14²
A = 1261.412 cm²
Thus, The required curved surface area =30.772 cm² and the total surface area = 1261.412 cm² for the cylinder.
Learn more about cylinder here:
https://brainly.in/question/11560872
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Use the rules for long divisions to divide 262by9
Answers
Answer: 29. 1
Step-by-step explanation:
What is the area of parallelogram ABCD?13 square units14 square units15 square units16 square units
Answers
Answer:
13
Step-by-step explanation:
the equation for parrlelograms is base times hieght. the base is about 3 and the hieght is 4 and 1/3 (ish) so 3*4.3 would give the answer of 13 square units. I hope this helps?
Sharon is a 40-year-old female. She weighs 172 pounds and is 5’7". Sharon is an employee at a retail store and walks around the shop periodically throughout the day to help customers. Sharon does not have a car, so she walks 0.5 mile to work and from work. After she comes home, she relaxes for the rest of the day.
Based on this information about Sharon calculate her estimated energy requirement (EER) and BMI
1. Age
a. 22 years
b. 35 years
c. 38 years
d. 40 years
2. Physical Activity Factor
a. 1.00
b. 1.11
c. 1.12
d. 1.25
e. 1.27
f. 1.45
g. 1.48
Answers
Explanation:
1. Age:
d. 40 years
EER calculated using the formula:
EER = {354 - (6.91 x a)} + b x {(9.36 x c) + (726 x d)}
where, a = age, b= physical activity, c= weight in kilograms (kg), d= height in meters (m).
= {354 - (6.91 x 40)} + 0.5 x {(9.36 x 78) + (726 x 0.14478)
=(354- 276.4) + (0.5 x 730.08) + 105.11028)
= 77.6 + 365.04 + 105.11028
= 547.75028.
BMI:
BMI = kg/m2 where kg= 78, m = 0.14478
BMI = [tex]\frac{78}{0.14478^{2} }[/tex]
BMI = 3,721.
2. Physical Activity Factor:
e.
Find the solution(s) of the following equation.
16
ba
121
Lesson 3:
numbers
Choose all answers that apply:
Lesson 4: $
line
4
Lesson 5:1
11
4
11
Extra pract
None of the above
Quiz 1:6
Prarth
Answers
Answer:
C and D
Step-by-step explanation:
::::
b= 4/11 , b= - 4/11
For the past 40 days, Naomi has been recording the number of customers at her restaurant between 10:00 a.m. and 11:00 a.m. During that hour, there have been fewer than 20 customers on 25 out of the 40 days.
What is the experimental probability there will be **20 or more customers** on the forty-first day? Include it as fraction, decimal and percent.
Answers
Answer:
the experimental probability for 20 or more customersis 37.5%
Step-by-step explanation:
Given that
The recording of the customers would be in between 10:00 AM to 11:00 PM
In this, they have been fewer than 20 customers on 20 out of the 40 days
We need to find out the experimental probability for 20 or more customers
So,
= (40 - 25) ÷ (40)
= 15 ÷ 40
= 37.5%
Hence, the experimental probability for 20 or more customers is 37.5%
SOMEONE HELP ME WITH THISS
Answers
Answer:
/_ 12 is the angle of depression from the firefighter to the second story window.
Step-by-step explanation:
Hope it helps!
#CarryOnLearning
Answer:
2nd option is the correct answer
Step-by-step explanation:
[tex] \angle 12[/tex] is the angle of depression from the second story window to the firefighter.
Which expression is equivalent to..
Answers
A small country emits 130,000 kilotons of carbon dioxide per year. In
a recent global agreement, the country agreed to cut its carbon
emissions by 3.1% per year for the next 10 years. In the first year of the
agreement, the country will keep its emissions at 130,000 kilotons and
the emissions will decrease 3.1% in each successive year. How many
total kilotons of carbon dioxide would the country emit over the course
of the 10 year period, to the nearest whole number?
Answers
Answer:1132858
Step-by-step explanation:
The total carbon dioxide the country emit over the course of the 10 year period would be 1,132,858 kilotons.
What is rate of decrease?
The rate of decrease is a constant amount of deduction from a fixed or primary amount.
Here, the carbon dioxide emits by the country per year is 130,000 kilotons.
The rate of decrease of the carbon dioxide emission per year would be 3.1%.
In the 1st year, the carbon dioxide emission = 130,000 kilotons.
In the 2nd year, the carbon dioxide emission = 130,000 × (100-3.1)/ 100 kilotons = 125,970 kilotons.
In the 3rd year, the carbon dioxide emission = 125,970 × (100-3.1)/ 100 kilotons = 122,064.93 kilotons.
In the 4th year, the carbon dioxide emission = 122,064.93 × (100-3.1)/ 100 kilotons = 118,280.92 kilotons.
In the 5th year, the carbon dioxide emission = 118,280.92 × (100-3.1)/ 100 kilotons = 114,614.21 kilotons.
In the 6th year, the carbon dioxide emission = 114,614.21 × (100-3.1)/ 100 kilotons = 111,061.17 kilotons.
In the 7th year, the carbon dioxide emission = 111,061.17 × (100-3.1)/ 100 kilotons = 107,618.27 kilotons.
In the 8th year, the carbon dioxide emission = 107,618.27 × (100-3.1)/ 100 kilotons = 104,282.1 kilotons.
In the 9th year, the carbon dioxide emission = 104,282.1 × (100-3.1)/ 100 kilotons = 101,049.35 kilotons.
In the 10th year, the carbon dioxide emission = 101,049.35 × (100-3.1)/ 100 kilotons = 97,916.82 kilotons.
Hence, total carbon dioxide emission by that country over 10 years = (130,000 + 125,970 + 122,064.93 + 118,280.92 + 114,614.21 + 111,061.17 + 107,618.27 + 104,282.1 + 101,049.35 + 97,916.82) kilotons = 1,132,857.77 kilotons ≈ 1,132,858 kilotons.
Learn more about rate of decrease here: https://brainly.com/question/14163915
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The price of an item has risen to $258 today. Yesterday it was $120. Find the percentage increase
Answers
Answer
138
Step-by-step explanation:
The answer is 138 because, when you take 258 and subtract it by 120, you will end up with 138!
Answer:
It was most likely raised by 46%
Step-by-step explanation:
120/258
b/-3 + 4 ^ 13 what is b
Answers
Answer: − b / 3 + 67108864
Step-by-step explanation:
www.kumospace.com/suzi123lamo456
Answers
Not clicking on the link
Find the volume of the solid figure shown below. The area of the base is 40 square inches and the height of the figure is 7 inches
Answers
Answer:
[tex] \displaystyle V _{ \text{cuboid}} =280 {in}^{3} [/tex]
Step-by-step explanation:
We are given the area of the base and the measure of the height of a solid figure . We want to find the volume of the figure.
Notice that the area of the base of the figure is not a perfect square. Thus, we assume the solid figure to be a cuboid.
What is Cuboid?Cuboid is a three dimensional rectangle. The dimensions of cuboid are length, width and height
Remember that
[tex] \displaystyle V _{ \text{cuboid}} = l\times w \times h[/tex]
Since the base area (l×w) is 40in² and height (h) is 7in, simply substitute:
[tex] \displaystyle V _{ \text{cuboid}} =40 \times 7[/tex]
simplify multiplication:
[tex] \displaystyle V _{ \text{cuboid}} =280[/tex]
hence,
The volume of the figure is 280 in³
Please help (no links) or i will report you i just need answers
Answers
1. b=117°
2.c=67°
have an amazing day <3
If angle A and angle B aré supplementary this means that they add up to 180 degrees
180 degrees - 63 degrees leaves us with 117 degrees for number 1
2) 67 degrees
If angle C and angle D are complementary, this means they add up to 90 degrees
90 degrees - 23 degrees = 67 degrees
Hope this helps :)
Given that O is
the center of the
circle and line
segment XY is a
tangent line, find
the measure of
angle BAX.
Answers
Answer:
Step-by-step explanation:
ahh 30° is the mystery angle . sooo
180-30 = 150 that angle BOA
then the other two angle are each 15°
so then BAX is 90-15=75°
:)
I NEED HELP CLICK HERE PLEASE
Answers
Answer:
it is the one above the last one
Step-by-step explanation:
i hope it helps
Answer:
x-5
Step-by-step explanation:
when x=(a number) then you -5 you find 5 less then a number therefore x-5 is the anwser
Can someone pls help me
Answers
Answer:
50.3 is the circumference
Step-by-step explanation:
Answer:
circumference = 50.2 in
Step-by-step explanation:
circumference = 2rπ
circumference = 8 x 2 x 3.14 = 50.24 in
Help I’ll give extra points & brainlist
Answers
Answer:
Options 1-3
A
B
C
Is 2.2, 4.5 and 6.7 a right triangle ?
Answers
Answer:
No
follow the pythagorean theorem and find out why . ..
There are 165 deer in a state park. The population is increasing at the rate of 12% per year. Enter a prediction for how long it will take the population to reach 300. If necessary, round your answer to the nearest tenth.
The deer population will reach 300 in approximately _____
years.
Answers
Year 1. 165•1.12=184.8
Year 2. 184.8•1.12=206.976
Year 3. 206.976•1.12=231.813
Year 4. 231.813•1.12=259.63
Year 5. 259.63•1.12=290.785
Year 6. 290.785•1.12=325.679
Therefore it will take 6 years for the deer’s population to reach 300
Help please. Need answers asap.
Answers
Answer:
a) 3
b) 30
c)48.8
don't forget to follow mecan someone please show me how to solve this?
Answers
surface area: 314
formula: A = 4pi r^2
volume: 523.33
formula: V = 4/3pi r^3
to solve you’d just plug in your radius (r), which in this case it’s 5
:)