HELP please my friend needs help with his MATH homework, see picture for problem TY :)
Answers
Plug in values into your formula
SA = 2•pi•r^2 + 2•pi•r•h
SA = 2•pi•3^2 +2•pi•3•8
Height (h) = 8in.
Radius (r) = 3 (diameter divided by 2)
Diameter = 6
SA = 2πr^2 + 2πrh
Where SA means surface area, r stands for radius, and h stands for height.
First find the radius. The radius of a circle is the distance from the outside of the circle to its center. It is half the diameter. To find the radius, divide the diameter by two.
r = 6/2
r = 3 inches
Now plug in the values for radius and height into your formula. Use pi = 3.14
SA = 2(3.14)r^2 + 2(3.14)rh
SA = 2(3.14)(3)^2 + 2(3.14)(3)(8)
SA = 6.28(9) + 6.28(24)
SA = 56.52 + 150.72
SA = 207.24 inches
Related Questions
can someone tell me how to do this I keep getting 3.14 over x
Answers
Answer:
60.46%
Step-by-step explanation:
Question: On this dartboard, the circle with 1-m radius is inscribed in an equilateral triangle. Find the probability that a dart that hits the board lands in the circular region. Justify your answer.
Let's start by finding the length of one of the sides of the equilateral triangle. We can do this by creating a 30-60-90 triangle from the radius of the inscribed circle.
I attached an image of what this should look like.
Solving for the length of half of the base of the equilateral triangle gives us 1√3. To get the length of the entire base of the triangle, we will double this value:
s = 2√3The area of an equilateral triangle is [tex]\displaystyle A=\frac{s^2 \sqrt{3} }{4}[/tex].
We can substitute the known value of s (side length) into the formula and solve for A.
[tex]\displaystyle A_t=\frac{(2\sqrt{3})^2\cdot \sqrt{3} }{4}[/tex] [tex]\displaystyle A_t=\frac{4(3) \cdot \sqrt{3} }{4}[/tex] [tex]\displaystyle A_t=3\sqrt{3}[/tex]The area of the equilateral triangle is 3√3.
Now, let's solve for the area of the inscribed circle. The formula for the area of a circle is [tex]\displaystyle A= \pi r^2[/tex].
We know the radius of the circle is 1, so let's substitute 1 for r:
[tex]A_c= \pi (1)^2[/tex] [tex]A_c=\pi[/tex]The area of the inscribed circle is π.
To find the probability of the dart hitting a specific area on the dartboard, we will divide the desired area by the total area of the dartboard.
[tex]\displaystyle P=\frac{\text{Desired area}}{\text{Total area}}[/tex] [tex]\displaystyle P=\frac{\pi}{3\sqrt{3} }[/tex] [tex]\displaystyle P=\frac{\pi \sqrt{3} }{9}[/tex] [tex]P \approx 0.60459978[/tex]The probability that a dart that hits the board lands in the circular region is about 60.46%.
What is the sum of
5/13
11/13
and
10/13
Answers
Answer:
2
Step-by-step explanation:
5/13 + 11/13 + 10/13 = 26/13 = 2
Answer:
2
Step-by-step explanation:
5/13+11/13+10/13 is the same as
(5+11+10)/13
(16+10)/13
26/13
2
Write of the equation of a line that passes through (14,25)and(34,75)
:
1- in the point slope form,
2- in the slope -intercept form, and
3- in the standard form
Show all your steps.
Answers
Answer:
1. y-25=5/2(x-14)
2. [tex]y=\frac{5}{2}x-10[/tex]
3. 5x-2y=20
Step-by-step explanation:
first, find the slope, m.
slope = rise/run = (75-25)/(34-14)= 50/20 = 5/2
1. point slope form: y-25=5/2(x-14)
2. [tex]y=\frac{5}{2}x-10[/tex]
3. switch the y to the right side: (5/2)x-y-10=0 --> (5/2)x-y=10
5x-2y=20
i will give braileast if it is correct
Answers
Answer:
4
Step-by-step explanation:
6* 2/3 = 12 /3 =4
2X-5<9 solve inequality
Answers
Step-by-step explanation:
2x<9+5
2x<14
2x/2<14/2
x<7
Answer:
[tex]\boxed {\boxed {\sf x <7}}[/tex]
Step-by-step explanation:
To solve the inequality you must isolate the variable, which is x.
[tex]2x-5 < 9[/tex]
5 is being subtracted from 2x. The inverse of subtraction is addition, so add 5 to both sides of the equation.
[tex]2x-5+5 < 9+5[/tex]
[tex]2x < 14[/tex]
x is being multiplied by 2. The inverse of multiplication is division, so divide both sides by 2.
[tex]\frac {2x}{2} < \frac {14}{2}[/tex]
[tex]x <7[/tex]
The solution to this inequality is x <7
A century ago, the average height of adult women in the United States was 63 inches. Researchers believe that the average might be greater today. A random sample of 40 adult women was selected from the population. The sample had mean 64.2 inches and standard deviation 2.9 inches. Assuming all conditions for inference are met, the researchers will perform an appropriate hypothesis test to investigate their belief.
Required:
What is the correct test statistic for the hypothesis test?
Answers
Answer:
t= 64.2-63 / 2.9/ sqrt 40
Step-by-step explanation:
Got it right on AP Classroom
There is a 0.18 probability of obtaining a sample mean height of exactly 64.2 inches from a population whose mean height is 63.7 inches.
What is the null hypothesis?The null hypothesis in inferential statistics states that two possibilities are identical. The null hypothesis states that the observed difference is purely random. It is feasible to calculate the probability that the null hypothesis is correct using statistical testing.
1. C) H0: u = 63.7 in. versus H1: u > 63.7 in.
the null hypothesis state that over the years the mean height is 63.7in. the alternative hypothesis will be if the mean height is greater than 63.7
2. z = (variate - mean)/ (standard deviation/
Z = (64.2 - 63.7)/ (20/roots 45) =0.17
meaning there is
B. There is a 0.18 probability of obtaining a sample mean height of exactly 64.2 inches from a population whose mean height is 63.7 inches.
3. if the level of significance is 0.05 or between 0.05 and 0.01, i.e. the confidence level is 95% or between 95% and 99%, the results are considered to be probably significant, i.e. the results are probably correct,
Therefore, the alternative hypothesis is correct
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Pls someone help me with this question pls
Answers
Answer: C
Step-by-step explanation:
there’s 100 different options, 25 of them are orange.
25/100 reduces to 1/4
Answer:
It would be 1/4. If you add up all the numbers
40,20,25,15. It adds up to 100. And 25 out of 100 is 1/4
Based on article 39, infer how some people had been abused by King John´s rule
Answers
Answer:King John wanted to wage a war with France to win back his ancestors land, and taxed the barons and people heavily.
Step-by-step explanation:
What is the common denominator of 3 4 and 5 8
Answers
Answer:
its 8
Step-by-step explanation:
Anyone know how to do this?
Answers
Answer:
38
Step-by-step explanation:
Yes frist you add 3x+8+62 = 5x+50
Triangle A'B'C' is the image of ABC under a dilation with a scale factor of 2.
What length of segment A'B?
Answers
The length of segment A'B' from the triangle A'B'C' is 6 units.
Given that, triangle A'B'C' is the image of ABC under a dilation with a scale factor of 2.
In the given triangle ABC, AB=3 units
The basic formula to find the scale factor of a figure is expressed as,
Scale factor = Dimensions of the new shape ÷ Dimensions of the original shape.
2=Dimensions of the new shape/3
Dimensions of the new shape=6 units
Therefore, the length of segment A'B' from the triangle A'B'C' is 6 units.
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____ft = 6 yd
Fill in the blanks _____ for this
Answers
Answer:
18 feet
Step-by-step explanation:
There is 3 feet in 1 yard. So, all you have to do is do 3 x 6 and get the answer of 18 feet = 6 yards.
The faculty of a certain four-year college consists of 179 teachers. There are 663 first-year students. The student-to-faculty ratio for the entire college is 15 to 1. What is the total number of second-, third-, and fourth-year students?
A 1,989
B 2,022
C 2,652
D 2,685
Answers
Hope it helps.
If 12 + 6x is 20 more than 16, what is
the value of 12x?
Answers
Answer:
12x = 48
Step-by-step explanation:
Translating the word problem into an algebraic equation, we have;
12 + 6x = 16 + 20
12 + 6x = 36
6x = 36 - 12
6x = 24
x = 24/6
x = 4
To find 12x;
12x = 12 * 4 = 48
LMNP is rotated 90 degrees clockwise around the origin.
What are the coordinates of P’?
A. P’ (9,0)
B. P’ (0,-9)
C. P’ (-9, 0)
D. P’ (0,9)
Answers
Answer:
B
Step-by-step explanation:
The new position of point P (h, k) will become P’ (k, -h).
Answer:
The answer above me is INORRECT!!! Look below!!!
Step-by-step explanation:
Help Urgent!
Answer options
The integer selected will be even.
The integer selected will be a multiple of 5.
The integer selected will be a multiple of 10.
The integer selected will be a multiple of 20.
Answers
Answer:
Step-by-step explanation:
There are 2 multiples of 20
There are 5 multiples of 10
There are 10 multiples of 5
There are 25 multiples of two (even)
So selecting an even integer is most likely.
During week 1 of a recycling drive, the fifth grade class recycled 9
pounds of glass and 123 pounds of newspaper. During week 2, the
fifth grade class recycled 8 pounds of glass and 13 pounds of
newspaper. How many more pounds of newspaper than glass did
the class recycle?
Answers
Answer:
119 pounds
Step-by-step explanation:
Glass :
1) 9 pounds
2) 8 pounds
9 + 8 = 17 pounds
Newspaper
1) 123 pounds
2) 13 pounds
123 + 13 = 136 pounds
136 - 17 = 119 pounds
Which functions are nonlinear? Select TWO that apply.
A
y = -5
B
y
+1
х
0
1
2
y
-2
114
-6
-8
3
х
1
y
1
2
3
4.
Answers
Answer:
A,B
Step-by-step explanation:
I think bc I had the same question well something like this in A in B was it
evaluate 11P4 and 9C5
Answers
Directions: Analyze carefully. Write T if the statement is true and write F if the statement is false.
1. Edge is the flat surface of a solid.
2. Rectangular prisms are solid figures which have 12 edges, 8 vertices and 6 rectangular
faces.
3. A cylinder is a solid figure which has 2 faces and 2 edges.
4. A cone has a flat surface.
5.
Apyramid has triangular faces.
Answers
Answer:
(1) F
(2) T
(3) F
(4) T
(5) T
Step-by-step explanation:
(1) False; The edge is not a flat surface but rather it is the point where two surfaces meet
(2) True; Rectangular prisms, also known as cuboids have the following properties.
[tex]Edges = 12\\ Vertices = 8\\ Faces = 6[/tex]
(3) False; A cylinder has 3 faces (2 flat faces and 1 curved face)
(4) True; A cone has 1 flat surface
(5) True; All pyramids have triangular faces
Help please thank uuuu
Answers
Answer:
B. x = 7; AB = 9, AC = 12
Step-by-step explanation:
12/4 = (x + 2)/(x - 4) (similar triangles theorem)
3 = (x + 2)/(x - 4)
Cross multiply
3(x - 4) = (x + 2)
3x - 12 = x + 2
Collect like terms
3x - x = 12 + 2
2x = 14
x = 14/2
x = 7
✔️AB = x + 2 = 7 + 2
AB = 9
✔️AC = (x + 2) + (x - 4) = (7 + 2) + (7 - 4)
AC = 9 + 3
AC = 12
Pls answer correctly I’ll give you brainliest
Answers
Answer:
Step-by-step explanation:
y=mx+b
so inset the first point into the equation
-3 for x and 7 for y.
7=m(-3)+b
y=mx+b
1 for x and -1 for y
-1=m(1)+b
now put them together and solve for m and b.
-1=m+b
7=-3m+b
--------------------
-1-b=m
7=-3m+b
inset m into the equation
7=-3(-1-b)+b
7=3+3b+b
4=4b
b=1
--------------
insert b back in for -1=m+b
-1=m+1
m=-2
---------------------------------------
Now insert it back into y=mx+b
y=(-2)x+1
so this line contains those points that were given
Hope this helps :)
Express as a difference: a+5
Answers
................
The expression expressed as a difference is (a - 2) - (-7).
We have,
We can express a + 5 as a difference by subtracting a suitable term from it.
One way to do this is to subtract 2 and add 2, like this:
a + 5 = a + 5 - 2 + 2 (adding and subtracting 2)
= (a - 2) + 7 (rearranging)
Now,
We can express a + 5 as the difference between a - 2 and -7, like this:
a + 5 = (a - 2) - (-7)
Thus,
The expression expressed as a difference is (a - 2) - (-7).
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HELP!!!!!
The net of a rectangular prism and its dimensions are
shown in the diagram.
What is the total surface area of the rectangular prism in
square inches?
Answers
Answer:
C. 245.5
Step-by-step explanation:
(5.5) (3) + (12.5) (3) + (5.5) (3) + (12.5) (5.5) + (12.5) (5.5) + (3) (12.5)
= 245.5
Answer:
its 245.5
Step-by-step explanation:
Which postulate proves the two
triangles are congruent?
Answers
Answer:
AAS
Step-by-step explanation:
because here it is given that two angle are
equal
and a side is common between both traingle
so, both traingle are congruent by
AAS
hope it helps
A
B
C
D
Or none of the above?
Answers
Please help me with these math problems (3) . I really need help . Multiple choice don't comment random for points please
Answers
Answer:
Follow me please
Mark brainliest
Answer:
B
Step-by-step explanation:
Find two numbers the quotient is between. Then estimate the quotient. Estimate. 34 ÷ 3 The quotient is between and . The estimate for the quotient is .
Answers
Answer:
34 / 3 = 11.33333.....
the quotient is between 11 and 12
The estimate is 11
100 POINTS FOR 4 QUESTIONS ITS EASY GUYS FOUR PICTURES ATTATCHED
Answers
Answer:
x≥-5
x≥4
r≥21
-15 greater than or equal to x
Step-by-step explanation:
2nd would be D. x>=-5
3rd would be C. 4, 9, 12
4th would be B. r>=21
Rodell wants to find the favorite gaming app among the students at his school. He decides to poll the thirty students on his football team and the fifteen students on his basketball team to gather the data. What is wrong with Rodell’s method for collecting his data?
Rodell only polled fellow athletes; this sample does not represent nonathletes at the school.
Rodell needs a larger sample size than two sports teams to represent a whole school.
Rodell polled everyone on his teams; he should have only polled every other student for it to be a true sample.
Rodell’s polling method only included fall and winter sports; he should have also included a spring sport like baseball.
Answers
Using sampling concepts, it is found that the due to bias, the correct option is given by:
Rodell only polled fellow athletes; this sample does not represent nonathletes at the school.
Why is Rodell's sample biased?The school is composed both by athletes and non-athletes, which should have different gaming apps, for example, athletes may be more likely to play sports games while non-athletes may favor RPG for example.
He surveys only athletes, hence, the correct option is:
Rodell only polled fellow athletes; this sample does not represent nonathletes at the school.
More can be learned about sampling concepts at https://brainly.com/question/25122507
Answer:
The correct answer is (A):
Rodell only polled fellow athletes; this sample does not represent nonathletes at the school.
Step-by-step explanation:
I did the quiz and got it right. Hope this helps you!!!!!
