Answer:
area=100π
Step-by-step explanation:
circumference=2πr
20π=2πr
20=2r
r=10
area=πr^2
area=π10^2
area=100π
Answer:
The answer is 40π in.
Step-by-step explanation:
The way you can find circumference using radius is this formula below:
c= 2π*r
c=6.8*20
c=40π in.
I hope this helped. Good luck on the rest of your exam! :)
Please help meeeeeeee
Answer:
the answer is b..all the answer optioni get 0.01
Find the value of x on a kite
Answer:
When we combine like terms we get 158 plus 2x equals 360 subtract 158 from both sides. And we get 2x...
Step-by-step explanation:
If 40% of the voters who responded are over 40 years old how many voters responded it all
Jackson started writing a story at 8:30 AM He stopped writing at 1:15 P.M. How long did he write?
Answer: he wrote for an five hours and forty-five minutes
Step-by-step explanation:
In January 2007 the population of Canada was 32 million.
7 million of these Canadian people spoke French as their first language.
(a) Express 7 million as a percentage of 32 million.
Give your answer correct to 1 decimal place.
Answer:
21.9%
Step-by-step explanation:
7000000/32000000=0.21875
move the decimal over two places to get percent and round the 8 up because of the 7. 21.9%
A story in the National Enquirer claimed that women who skip breakfast are more likely to give birth to baby girls, whereas women who eat breakfast are more likely to have baby boys. A skeptical researcher tested this by taking a sample of pregnant women who already knew the gender of their baby and asking them whether they ate breakfast each day or not. What are the odds of having a boy if you eat breakfast
Answer:
hello the options to your question is missing attached below are the options
answer : The number that had a boy and ate breakfast ( option 3 )
Step-by-step explanation:
The odds of having a boy if you eat breakfast is ; The number that had a boy and ate breakfast
This simply because the dependent variable is the Gender of the baby while the independent variable is Breakfast
What is the center and radius of the circle? (x-1)^2+y^2=25
Answer: The center is (-5,2)
The radius is 5
Step-by-step explanation:
Equation of a circle is:
(x-h)^2+(y-k)^2=r^2
(x+5)^2+(y-2)^2=5^2
Comparing both equations we get :
The center (-5,2)
The radius is 5
Hope This Helps :)
Find the equivalent expression of 1/3
Answer:
..........
Step-by-step explanation:
1 = 1 × 2 = 2
3. 3×2. 6
Which set of values make the inequality true x-8.7>15.8
Answer:
x>24.5
Step-by-step explanation:
cant do step by step because look
Jill collected a total of 19 gallons of honey. If she distributes all of the honey equally between 7 jars, how much honey will be in each jar?
what is the mean will give brainlyest
A physical education teacher wanted to know the effects of various activity levels on body composition. She surveyed her physical education classes and categorized 30 students into five activity levels based on the amount of daily exercise in which the students participated: inactive, semiactive, normal, active, and very active. She measured percent body fat values using skinfold calipers on all subjects with the following results.
Inactive Semiactive Normal Active Very Active
30.2 29.4 22.9 17.6 10.9
29.6 17.6 25.4 13.4 13.7
35.2 26.4 19.6 20.3 12.8
19.1 25.3 18.7 19.6 14.7
26.3 22.5 21.8 15.1 9.3
22.4 28.6 24.9 10.7 12.7
Required:
a. What is the independent variable in this study? What is the dependent variable?
b. What are the means and standard deviations for each group?
c. Does a significant difference exist among any of the groups?
Answer:
a. The independent variable is the activity level
The dependent variable is the body composition (the percentage of body fat in the values)
b. The mean and standard deviation are;
(Mean, Standard deviation)
Inactive(27.13, 5.8), Semiactive(24.97, 4.367), Normal(22.217, 2.73), Active(16.12, 3.73), Very Active (12.35, 1.95)
c. Yes
Between Semiactive and Active, Semiactive and Very Active, Normal and Very Active, Normal and Active, Active and Inactive, and Inactive and Very Active
Step-by-step explanation:
a. The independent variable is the activity level
The dependent variable is the body composition (the percentage of body fat in the values)
b. The given data are presented as follows;
Inactive [tex]{}[/tex] Semiactive Normal Active Very Active
30.2 [tex]{}[/tex] 29.4 22.9 17.6 10.9
29.6 [tex]{}[/tex] 17.6 25.4 13.4 13.7
35.2 [tex]{}[/tex] 26.4 19.6 20.3 12.8
19.1 [tex]{}[/tex] 25.3 18.7 19.6 14.7
26.3 [tex]{}[/tex] 22.5 21.8 15.1 9.3
22.4 [tex]{}[/tex] 28.6 24.9 10.7 12.7
Bymaking use of Microsoft Excel, we have;
Inactive [tex]{}[/tex] Semiactive Normal Active Very Active
Mean 27.13 [tex]{}[/tex] 24.97 22.217 16.12 12.35
Standard Deviation 5.8 [tex]{}[/tex] [tex]{}[/tex] 4.367 2.73 3.73 1.95
c. Yes
[tex]t=\dfrac{(\bar{x}_{1}-\bar{x}_{2}) }{\sqrt{\dfrac{s_{1}^{2} }{n_{1}}-\dfrac{s _{2}^{2}}{n_{2}}}}[/tex]
The degrees of freedom = n - 1 = 6 - 1 = 5
The critical t = 2.5706
Therefore, we have;
The test statistic for Inactive and semi active ≈ 0.72875
The test statistic for Semiactive Normal ≈ 1.309
The test statistic for Inactive and Normal ≈ 1.8773
The test statistic for Semiactive and Active ≈ 3.775 (Significant)
The test statistic for Semiactive and Very Active ≈ 6.464 (Significant)
The test statistic for Normal and Very Active ≈ 7.204 (Significant)
The test statistic for Normal and Active ≈ 3.231 (Significant)
The test statistic for Active and Inactive ≈ 3.91 (Significant)
The test statistic for Active and Very Active ≈ 2.194
The test statistic for Inactive and Very Active ≈ 5.92 (Significant)
Where the test statistic is larger than the critical 't' the statistic is significant
What is the answer to : (d+2)(-7)=
Answer:
-7d - 14
Step-by-step explanation:
that is the answer
[tex]\huge\text{Hey there!}[/tex]
[tex]\large\textsf{(d + 2)(-7)}\\\\\large\text{DISTRIBUTE}\\\large\textsf{(d)(-7) + (2)(-7)}\\\large\textsf{(-7)(d) = -7d}\\\laefe\textsf{2(-7) = -14}\\\large\textsf{= \bf -7d - 14}\\\\\boxed{\boxed{\large\textsf{Answer: \huge \bf -7d - 14}}}\huge\checkmark[/tex]
[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
2 minutes 10 seconds-------130 seconds put the sign
Answer:
2 minutes 10 seconds = 130 seconds
Step-by-step explanation:
Given that,
LHS = 2 minutes 10 seconds
RHS = 130 seconds
Solving LHS first,
We know that,
1 minute = 60 seconds
2 minute = 120 seconds
2 minutes 10 seconds = 120s + 10 s
= 130 seconds
It means,
LHS = RHS
So,
2 minutes 10 seconds = 130 seconds
5 feet. how many miles is that using the scale? 1 ft= 4 mile
Answer:
your answer I think would be 20 miles
please help me i really need help please
Answer: 66.
explanation: Ok so right triangle: 1 right angle or 90° and 2 acute angles (Less than 90°). We know that one of the angles are equal to 24° and the right angle is equal to 90° degrees. Now what? We add those 2 values together. 90 + 24 = 114. In the background, a triangle is equal to 180°. So now that we have our 2 core values together, we subtract. The reason why is because this is a missing value type equation. In these types, (usually indicated by the word find) we can subtract 2 values. Our 2 values is 114 and 180. When we subtract both, we get 66.
Select the correct answer.
What is 60 as a product of its prime factors?
2x3 x 52
2x32 x 5
2x3 x 5
22 x 3 x 5
Help me answer my homework questions!
Answer:
Page 1: D
Page 2: A
Page 3: D
dad lol
what is the answer
1 x -2 +3
Answer:
The anwser is 1.
Step-by-step explanation:
I need help with this
Answer:
x=45
Step-by-step explanation:
This is a triangle so it interior degrees will add up to 180.
W
Since Line AC is tangent to Circle O at point c, Point C measures 90 degrees.
We can find OAC by using the triangle interior theorem,
[tex]45 + 90 + x = 180[/tex]
[tex]135 + x = 180[/tex]
[tex]x = 45[/tex]
4 -3x + 7 what is cofient
Answer: 3
Step-by-step explanation:
A coefficient is the number that comes before a variable, so the three is before the x so 3 is the coefficient.
Please help me with these two questions!
Answer:
Formula for both is: A= (h•b)/2
Plug in values for First one are: 16 and 14
Area of first one: 112in^2
Plug in values for Second one: 2 and 3.5
area of second one: 3.5m^2
Step-by-step explanation:
plug in the values-. A= 16•14= 224 224÷2= 112
plug in the values #2- A= 2•3.5= 7 7÷2= 3.5
hope this helps u <3
Why were most peppered moths dark in the 1959 era but light in the 2000s?
What are the coordinates of the midpoint between the points (-1,4) and (2,-5)
Answer:
(1/2, -1/2)
Step-by-step explanation:
To find a midpoint add the two x's and divide by 2 so -1+2 / 2 = 1/2
add the two y's and divide by 2 so 4-5 / 2 = -1/2
Put the two numbers together as a coordinate (1/2, -1/2)
A triangle has side lengths of 23 cm, 6 cm, and 28 cm. Classify it as right,acute, or obtuse
Obtuse
Right
Acute
Monica and jaimy are creating number patterns. Monica uses the rule . "Multiply by 3 and stats at 4 .Jaimy uses the rule "add 6 and stars at 12 .which term in Jaimy's
Answer:
Jaimy's fifth term equals Monica third term of 36.
Step-by-step explanation:
Monica:
Multiply by 3 and starts at 4.
4*3 = 12
12*3 = 36
36*3 = 108
...
So: {3,12,36,108,...}
Jaimy:
Adds 6 and starts at 12. So
12 + 6 = 18
18 + 6 = 24
24 + 6 = 30
30 + 6 = 36
...
So: {12,18,24,30,36,...}
So Jaimy's fifth term equals Monica third term of 36.
Find the Area of the Polygons
Please Help Me!!!!!!!!!!!!!!!
Answer:
Um, the second one is 120 units..
Step-by-step explanation:
Answer:
The first one is 64 sq un
The second one is 120 sq un
Step-by-step explanation:
I do Rsm lol I cant figure out the third one
QUICK!! NEED HELP ASAP!!!
Answer:
x to the 4th power+ 87x + 34
Step-by-step explanation:
Find the volume (don't forget your UNITS) *
Answer:
70 cubic in
Step-by-step explanation:
2x7x5
70
4x²y+2xy² simplefid in algebra
Answer:
Difficulties regarding the emotions of your body.
Step-by-step explanation:
Difficulties regarding the emotions of your body.