Answers
Answer:
116 cm²
Step-by-step explanation:
area shaded = total area - area not shaded
πr² is the area of a circle
total area = πr² = π*(6.5cm)² = 132.732289614 cm²
area not shaded = πr² (note the radius is 2.3cm for the non-shaded portion) = π*(2.3cm)² = 16.6190251375 cm²
area shaded = total area - area not shaded = 132.732289614 cm² - 16.6190251375 cm² = 116.113264476 cm² ≈ 116 cm²
Related Questions
solve for x using the Pythagorean Theorem.
Answers
Pls hurry, I need help! Solve the following question by factoring:
Answers
Answer:
[tex]\huge\boxed{\bf\:x = -\frac{4}{3}}[/tex]
Step-by-step explanation:
[tex]9x ^ { 2 } +24x+20=4[/tex]
Bring 4 to the left hand side of the equation .
[tex]9x^{2}+24x+20-4=0[/tex]
Subtract 4 from 20.
[tex]9x^{2}+24x+16=0[/tex]
Now, factorise it using the splitting-the-middle-term method .
[tex]9x^{2}+24x+16=0 \\9x^{2}+12x+12x+16 =0\\\left(9x^{2}+12x\right)+\left(12x+16\right)=0 \\3x\left(3x+4\right)+4\left(3x+4\right) =0\\\left(3x+4\right)\left(3x+4\right) = 0\\\left(3x+4\right)^{2} = 0[/tex]
Now since both the factors are the same, take one of them,
[tex]3x + 4 = 0\\3x = - 4\\\boxed{\bf\:x = -\frac{4}{3}}[/tex]
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There were 8 judges at a gymnastics competition. Kathleen received these scores for her performance on the uneven parallel bars.
8.9, 8.7, 8.9, 9.2, 8.8, 8.2, 8.9, 8.8
a. Find the mean, median, and mode.
b. Which statistic reflects a typical score? Explain.
Answers
Answer:
below
Step-by-step explanation:
mean : 8.8
The mean is the average, so you find it by adding all the numbers together and dividing by n, or how many numbers there are. For this, I added to get 70.4 and divided that by 8 (8 total scores).
70.4/8 = 8.8.
median : 8.85
The median is the middle of the data set, so you put the numbers in increasing order (lowest number to highest number) and then finding the middle of that set. For this set, since there is an even number of numbers (8), you have to find the middle by adding the two middle numbers and dividing by 2.
8.2, 8.7, 8.8, 8.8, 8.9, 8.9, 8.9, 9.2
The middle numbers are 8.8 and 8.9, so you add those together and divide by 2 to get 8.85.
mode : 8.9
The mode is just what number appears most often. Because 8.9 appears three times in this data set, more than any other number, the mode is 8.9.
b. The mean reflects a typical score because it is the average, and is used most often when someone is expressing a typical or "average" score. It is the score most people are likely to get, and as there are no outliers in this data set, it reflects a typical score for this data set. It is also the same as the mode, or most often score, in this data set.
1) Put the numbers in order
8.2, 8.7, 8.8, 8.8, 8.9, 8.9, 8.9, 9.2
2) mean is average
70.4/8 = 8.8
3) Median is the middle number; if m = 2, then divide them by 2
17.7/2 = 8.85
4) Mode is most often
8.9 (3 times)
Spontaneous generation is the idea that life can emerge from nonliving matter. Spontaneous
many in the scientific community up until the mid-nineteenth century. A series of simple experiments tested the validity of
this idea. Evidence used to
support spontaneous generation was the observation that foods over time became covered in maggots or fungal and
bacterial growth, implying that these just appeared." The inference behind spontaneous generation is that there is no
"parent" organism
In 1668, Francesco Redi proposed a different hypothesis to explain the specific example of maggots that appeared on spoiled
food. Explain how Redi disproved the idea of spontaneous generation and helped contribute to the idea that cells come from pre-
existing cells.
A)
B)
Redi reasoned that maggots appeared after meat spoiled, breaking down
the rotten meat
Redi reasoned that flies laid eggs on meat, so meat kept away from adult
flies would remain free of maggots
Redi reasoned that meat had to be exposed to air for maggots to appear.
Meat not exposed to air would remain free from maggots.
Redi reasoned that maggots emerged from condensation. As long as the
meat was kept from water sources, there would be no maggots.
09
D)
Answers
Answer:
Celss do come from pre existing cell.
Redi reasoned that flies laid eggs on meat, so meat kept away from adult
flies would remain free of maggots it is the example .
What contribution did Francesco Redi make to cell theory?Redi went on to show that while live maggots or flies will reproduce when placed on decomposing flesh in a sealed jar, dead ones would not. This ruled out the existence of any necessary component in extinct organisms as well as the requirement of fresh air for the creation of life.
In a well controlled experiment, Francesco Redi demonstrated how living things are descended from other living things. The third tenet of the cell theory—that cells originate from other living cells—was developed as a result of this research and that of succeeding researchers.
The prehistoric beliefs were put to the test. Francesco Redi disputed the notion that maggots appeared out of thin air from rotting meat in 1668.
To learn more about Francesco reddy refer to:
https://brainly.com/question/20801972
#SPJ2
On what interval/s is the graph decreasing?
Answers
Answer:
-1 < x < 1/3
Step-by-step explanation:
When the graph is decreasing, it means the the graph's slope is negative, or the graph is going towards negative infinity.
We see from the graph that it starts to decrease from -1 to 1/3. Therefore, our answer is -1 < x < 1/3.
Everywhere else on the graph is increasing.
in 1990 there were about 5.4 billion people in the world. if the population has been growing at 1.95% per year, estimate the year when the population will be 8 billion people
Answers
Answer:
2011
Step-by-step explanation:
Here is the formula.
[tex]A=P(1+r)^{n}[/tex]
A = Final Value
P = Starting Value
R = Rate
N = Time in Years
A = 8,000,000,000
P = 5,400,000,000
R = 0.0195
N = Time in Years
Solve for n.
20.35 Years from 1990; so sometime in 2011 the population would be 8 billion.
WILL GIVE BRAINIEST
50 POINTS!!
i am timed
What is the scale factor of this dilation?
Answers
Answer:
The scale factor of this dilation is [tex]\frac{1}{2}[/tex]
Step-by-step explanation:
The length of AC is 8, which is given. Since AC' is the dilated side that corresponds to AC, and the length is 4, that means the scale factor of dilation from ABC to AB'C' is [tex]\frac{4}{8}[/tex] or [tex]\frac{1}{2}[/tex].
How big is the universe
Answers
Answer:
The universe has... No volume, No size, and no weight it's infinite in every way. something we humans sadly will never uncover.
Step-by-step explanation:
find the missing length indicated
(help me find x)
Answers
Answer:
48 units
Step-by-step explanation:
By geometric mean theorem:
[tex]x = \sqrt{64 \times 36} \\ \\ \implies \: x = 8 \times 6 \\ \\ \implies \: x = 48 \: units[/tex]
brainliest for correct answer
Answers
B
The explanation is:
I looked it up and did some simple math.
When a cannonball is fired, the equation of its pathway can be modeled by h=-16t2 +128t. Find the maximum night of the cannon ball
Answers
Answer:
256
Step-by-step explanation:
When the equation is graphed the highest point is (4,256). So 256 is the maximum height of the cannon ball.
Which exponent is bigger x6 or x-3?
Answers
Answer:
6
Step-by-step explanation:
6 > -3
6 is a greater exponent than -3
4 kg of smell fresh washing powder costs 19 Pounds.
How much does 15 Kg cost? Give answer in pounds.
Answers
Answer:
71.25 pounds
Step-by-step explanation:
I'd put it all in a ratio first
So it would look something like this :
WP : P
4. : 19
1. : 4. 75. ( I just divided them both by 4 so wp is 1)
15. : 71. 25. ( I multiplied them by 15 )
Which event is most likely? drawing a heart randomly out of a pile of 10 hearts and 9 spades correctly choosing a random number between 1 and 50 choosing a girl randomly in a class of 8 boys and 17 girls choosing a boy randomly in a class of 10 boys and 15 girls
Answers
Answer:
3
Step-by-step explanation:
3.A city of 100,000 is having pollution problems and is decreasing in size 4% annually (every
year). Find the population of this city in 16 years.
Answers
Answer:
64,000
Step-by-step explanation:
4x100,000/100=4,000
4,000x16=64,000
evaluate a+6 for a=10
Answers
Answer:
a + 6 = 16
or
10 + 6 = 16
Hope this helps! Please mark Brainliest!
Answer: the answer is 16
Step-by-step explanation:
Can you guys pls help me with this
Answers
Answer:
the answer is c
Step-by-step explanation:
not enough information
Answer:
Step-by-step explanation:
İt is SSS
Because
∡FBG=∡FBC
∡BFC=∡BFG
=> ∡BCF=∡BGF => SSS
What is the value of x in the diagram below.
A.6
B.4.2
C.7
D.4
Answers
Answer:
x = 6
Step-by-step explanation:
Side NL is congruent to ML. Thus, making x = 6.
Find the value of x in the triangle shown below.
Answers
Prove that cot 4x (sin 5x + sin 3x) = cot x (sin 5x – sin 3x).
Answers
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.........
.....
....
A recipe calls for 3/4
cup of flour. How many cups of flour will you need to make 3 batches?
Answers
Answer:
The answer is 3. (2 1/4)
The fraction 3/4 multiplied by 3 = 9/4.
9/4 is also equivalent to 2 1/4.
Which of these are examples of Security and Protective Services workplaces? Check all that apply. Banks ski areas courtrooms emergency vehicles beaches prisons offices traffic intersections.
Answers
Answer:
banks, ski areas, beaches, offices, and traffic intersections
Step-by-step explanation:
i did the work
Answer:
A. Banks, B ski areas, E Beaches, G offices, H traffic intersections
Step-by-step explanation:
got it right on EDGE 2023
100 POINTS!!!
What Form is 3x + 4y = 12 in?
A. Standard Form
B. Slope-Intercept Form
C. Point-Slope Form
D. General Form
Answers
Answer: A. Standard Form
Standard form is Ax+By = C, where A,B,C are integers
1. a number is as much greater than 21 as it is less than 71. find the number
.
2. find 2 consecutive natural number whose sum is 63.
Answers
1. A number is as much greater than 21 as it is less than 71. Find the number
Solution -
Let the number be x.
x - 21 (number is as much greater than 21)71 - x (it is less than 71)As both the value of x - 21 and 71 - x is same hence,
=> x - 21 = 71 - x
=> x + x = 71 + 21
=> 2x = 92
=> x = 92/2
=> x = 46
Hence, the number is 46.
2. Find 2 consecutive natural number whose sum is 63.
Let the two consecutive numbers be x and x + 1.
=> x + (x + 1) = 63 (A.T.Q)
=> x + x + 1 = 63
=> 2x = 63 - 1
=> 2x = 62
=> x =62/2
=> x = 31
Hence, the consecutive natural numbers whose sum is 63 are 31 and 32.
Which triangles are similar?
A. Triangles A and C
B. Triangles A, B, and C
C. Triangles B and C
D. Triangles A and B
Answers
Answer:
See below.
Step-by-step explanation:
They are all similar.
-hope it helps
The perimeter of a square is 16 inches. What is the length of each side
Answers
Step-by-step explanation:
4in + 4in +4in +4in because 4× 4 is 16 but since you are finding perimeter it is addition
Greatest to least 9,354 , 9,012 , 9,1 , 9,157
Answers
Answer:
9,354,9,157,9,012,9,1
Step-by-step explanation:
First I do thousands place so 3 numbers have 9 for thousands place.
Numbers are
9,354
9,157
9,012
it cant be 9,012 because this number don't have a hundreds place.
But in hundred place 9,354 would be better than 9,157 because 9,354 had 300 while 9,157 only has 100.
So greatest=9,354
Second greatest=9,157
And last 9,000 number third greatest=9,012.
Our last numbers don't have hundreds or thousands,they have ones but 9 is greater than 1 because...
Say you had 9 pizzas and your friend had 1 you would have more or a greater amount so.
Least=1
and second least=9
Meaning order=
9,356=greatest
9,157
9,012
9
1=least
Hope it helps have a great day:)
Don collects trading cards. His favorites are baseball and football cards. For
every 8 baseball cards he owns, Don has 15 football cards. What is the ratio
of baseball cards to football cards in his collection?
A. 15:8
B. 8 and 15
C.
15
8
ОО
O D. 8 to 15
Answers
Answer:
The answer is either A or D but I feel like A is the better choice to go with sorry if I'm wrong
Step-by-step explanation:
Question 2: Look at the students work and solution to the problem. Identify the error that is made and describe it. Solve the problem correctly. Incorrect work/solution Simplify the expression: 7k + 14 - 9k - 10 = 16k + 4 Identify and Explain the error
Answers
Answer:
-2k + 4
Step-by-step explanation:
Given:
Incorrect work / solution
7k + 14 - 9k - 10 = 16k + 4
Error is the simplification of the like terms, that is, 7k - 9k
Correct work / solution
7k + 14 - 9k - 10
Collect like terms
= 7k - 9k + 14 - 10
= -2k + 4
The error made was adding 7k and 9k together, instead of subtracting 9k from 7k which gives -2k as answer
What are the four main types of graphs and when would they be most appropriate to use?
Answers
Answer:
The four main types of graphs are line graphs, bar charts, pie charts, and histograms. They all can be used for many things