The drawing shows a semicircular window separated into 3 sections of colored glass
Approximately how many square inches of the tinted glass are red
Answers
Answer:
141.3
Step-by-step explanation:
27.78% of the total area is covered with red.
What is the area of a sector? What is a expression? What is a mathematical equation?A part of a circle is called sector. The area of a sector is given by -(Ф/360) x πr²
A mathematical expression is made up of terms (constants and variables) separated by mathematical operators. A mathematical equation is used to equate two expressions.Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.We have the given semicircle as shown in image.
Total green coloured area -
A[G] = 2 x {(Ф/360) x πr²}
A[G] = 2 x (40/360 x πr²}
A[G] = (2/9)πr²
Now -
A[R] = πr²/2 - (2/9)πr²
A[R] = πr²{1/2 - 2/9}
A[R]% = (πr²{1/2 - 2/9}/πr²) x 100
A[R]% = (1/2 - 2/9) x 100
A[R]% = (9 - 4)/18 x 100
A[R]% = 5/18 x 100
A[R]% = 500/18
A[R]% = 27.78%
Therefore, 27.78% of the total area is covered with red.
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Related Questions
What are the angles in degreees
Answers
Answer: A is 70 B is 45 and C is 50
Step-by-step explanation:
I'll give brainliest please help
Answers
Answer:
∠R = 38°
Step-by-step explanation:
∠R = 1/2(arc PE - arc SQ)
∠R = 1/2(140 - 64) = 1/2(76) = 38°
Graph a line that has a slope of 5/2 and includes the point (-2, -7)
Answers
Y = 5/2x + b
Plug in the points
-7 = 5/2(-2) + b
-7 = -5 + b, b = -2
Equation: y = 5/2x - 2
Find two points and draw a line
(0, -2) and (-2, -7)
Draw a line between the points
3. if u get this right i’ll give u brainliest
Answers
Answer:
(-3,2)
Step-by-step explanation:
3/4 of eight is six so go to two and then find the x, as x wasn't on the numbers it is not a multiple of two, so three was the closest number
may be wrong
What is the area of a parallelogram that has a base of 4 ½ inc. and a height of 2 ¼ in. ?
Answers
Answer:
4.5
Step-by-step explanation:
Which theorem can you use to show that the quadrilateral on the tile floor is a parallelogram?
Answers
Answer:
Parallelogram Theorem #1 Converse
Step-by-step explanation: : If each of the diagonals of a quadrilateral divide the quadrilateral into two congruent triangles, then the quadrilateral is a parallelogram. Parallelogram Theorem #2 Converse: If the opposite sides of a quadrilateral are congruent, then the quadrilateral is a parallelogram.
Parallelogram opposite sides converse. Therefore, option A is the correct answer.
What is parallelogram?A parallelogram is a special kind of quadrilateral that is formed by parallel lines. The angle between the adjacent sides of a parallelogram may vary but the opposite sides need to be parallel for it to be a parallelogram. A quadrilateral will be a parallelogram if its opposite sides are parallel and congruent.
Let the diagonals AC and BC intersect at O.
Consider, triangle BOC and triangle AOD
OA=OC (Shown in the figure)
∠AOD=∠BOC (Vertically opposite angles are equal)
BO=DO (Shown in the figure)
By SAS congruence theorem
triangle BOC and triangle AOD are congruent
So, by CPCT AD=BC
Similarly,
From, triangle AOB and triangle DOC
AB=DC
Therefore, option A is the correct answer.
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Can someone help me pls
Answers
Answer:
The answer would be C
Step-by-step explanation:
This is because 3/4 times two is 6/4 simplified is 1 1/2
Find the missing side lengths.
Need help please.
This is the 6th time I post.
Answers
Answer:
x = 9.238 y = 4.619
Step-by-step explanation:
I kind of forgot how to do sohcahtoa but we do cosine for one of them. I used a calculator but the lengths seems reasonable so I'm sure they should be right.
Find the slope of the line
Answers
Answer:
m = 3/4
Step-by-step explanation:
slope of a line equation:
[tex]m = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]
m = (3-0)/(2-(-2))
m = 3/4
Compare each set of rational numbers.
Answers
If two events A and B are independent, and you know that P(A) =
what is the value of P(A|B)?
Select one:
There is not enough information to determine the answer.
7/10
3/10
1
Answers
Answer:
i think its 7/10
Step-by-step explanation:
the scatterplot shows the number of hours that 12 people spent learning to type on a keyboard and each persons average typing speed. Based on the scatterplot, what is the best prediction of a persons average typing speed in words per min. if the person has spent 70 hours learning to type?
Answers
Answer:
85 wpm
Step-by-step explanation:
From the scatter plot, we can see the following;
At 20 hours, average typing speed = 34 wpm
At 30 hours, the average typing speed = 40 wpm
At 40 hours, the average typing speed = 51 wpm
At 50 hours, the average typing speed = 65 wpm
Average differences = ((40 - 34) + (51 - 40) + (65 - 51))/3 = 10.3
Approximating to a whole number = 10
Now, we can approximate that at 60 hours, average typing speed = 65 + 10 = 75 wpm
At 70 hours, the average typing speed = 75 + 10 = 85 wpm
Answer:
85 wpm
Step-by-step explanation:
I took this test!
Which would be the next step? Does anyone know? Please, help.
Answers
Answer:
∠DAB = ∠DBA
Then AD=DB from above statement
help me, please. I'm not very good at math
Answers
Answer:
1st, 2nd, 3rd
Step-by-step 1explanation:
30+40+5=75
30+40=70
70+5=75
20+1+50+4
=20+50=70
1+4=5
70+5=75
50+30-5
50+30=80
80-5=75
I hope this helps :)
PLEASE HELP IM BEGGING YOU ITS EASY IM JUST SLOW
Answers
Answer:
6
Step-by-step explanation:
Formula for area A=0.5(bh)
12=0.5(4h)
12=2h
6=h
Answer:
6
Step-by-step explanation:
Area of triangle equation:
A=[tex]\frac{1}{2}[/tex] base * height
For this triangle...
12=[tex]\frac{1}{2}[/tex] (4) (x)
we need to figure out what x is to find the height.
To get x alone in this equation we can first divide both sides by 4
12/4=[tex]\frac{1}{2}[/tex] (x) ---> 3= [tex]\frac{1}{2}[/tex] (x) Then multiply by the reciprocal of 1/2 which is 2/1
x=6
how many meters are their in centimeter
Answers
Answer:
You mean how many centimerters are in a meter?
In that case 100.
Step-by-step explanation:
K divided by 5 = 12.4
Answers
Answer:
k=62
Step-by-step explanation:
K divided by 5 = 12.4
Multiply both sides by 5
5k/5=12.4×5
Simplify;
k=62
Hope this helped!!
Answer:
k = 62
Step-by-step explanation:
To solve we need to get k on one side alone.
To do this we can multiply buth sides by 5
[tex]\frac{k}{5} =12.4[/tex] ---> =12.4*5
This gives us x=62
You can check this by putting 62 in for k and solving the problem.
Alan and Beth share $1190 in the ratio Alan : Beth = 5:2.
Work out how much Alan receives.
options:
$850
$1666
$34
$119
Answers
The share of money Alan receives is $850. Therefore, option C is correct answer.
Given that, the total amount is $1190 and the ratio Alan: Beth = 5:2.
We need to find the how much money Alan gets.
What is the ratio?The quantitative relation between two amounts shows the number of times one value contains or is contained within the other.
Now, 5+2=7
Money Alan receives=5/7×1190
=$850
The share of money Alan receives is $850. Therefore, option C is correct answer.
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Max gets a weekly allowance of $17. He spends $3 each week on snacks. He splits the rest of his allowance into equal amounts for his college fund and spending money. How much money does Max keep for spending money each week? $
Answers
Answer:
$7
Step-by-step explanation:
The amount max keeps for spending = 1/2(total allowance - amount he spends on snacks)
total allowance = $17
amount he spends on snacks = $3
Amount he would have for his college fund and spending money. = $17 - $3 = $14
Since he splits the amount equally between his college fund and spending money, the amount he would have for spending can be determined by dividing 14 by 2
$14/2 = $7
Jacob runs 5 miles in 1 1/2 hours . Robert runs 3 miles in 45 minutes or 3/4 hour. Who runs faster
Answers
Answer:
Robert
Step-by-step explanation:
If Robert runs 3 miles in 45 minutes, by the end of 90minutes, Robert would have covered 6miles, while Jacob covered 5miles in 90 minutes, therefore, Robert ran faster than Jacob.
Which expression is equivalent to 2 (3x – 4)?
ОА) 3х - 4
O B) 5x - 6
Ос) 6x - 4
OD) 6x – 8
Answers
skrndornejdjenene
no link just put the answerrrrr
Answers
Answer:
4in
Step-by-step explanation:
(z^6/z)^2 QUICK ILL GIVE BRANLIEST
Answers
Answer, z10
Step-by-step explanation:
Tad and his buddies drove to the orange bowl to see their favorite football team win the national championship because of heavy traffic they only avsraged 50 mph however on the return trip they averaged 75 mph if the total round trip took 12 hours how long did it take tad and his buddies to drive to the orange bowl
Answers
Answer:
7.2
Step-by-step explanation:
Answer:
Step-by-step explanation:
Distance "D" = rate × time
or d = r × t.
Tad and his buddies drove to the orange bowl(while going) -50mph
Tad and his buddies while returning from a trip -75mph
Total round trip = 12 hours
Distance while going = 50 x t
Distance while returning = 75 (12 - t)
50t = 75(12 -t)
50t = 900 -75t
50t + 75t = 900
125t = 900
t = 900/125
t= 7.2
The total number of hours it takes Tad and his buddies to drive to the orange bowl is 7.2 hours.
PLSS HELP IMMEDIATELY!!! i’ll give brainiest if u don’t leave a link!
Answers
Answer: Evaluate the findings to compare to his hypothesis
Step-by-step explanation: Since the biologist already has the findings and has a hypothesis, he now has to compare both of them together.
Determine the number of centimeters in 2 inches.
Answers
Answer:
5
Step-by-step explanation:
Answer:
5 centimeters
Step-by-step explanation:
You have to look at where it says 2 inches, and follow the line up to where the red stops and see how many centimeters it crosses
someone helpp!!!!!!!
Answers
Answer:
the rate of change is 3
Step-by-step explanation:
if im wrong im sorry but if im right give me brainliest
the function \:h=-0.01x^2+0.9x models the height in feet, h, of a soccer ball as it travels a horizontal distance in feet, x. What is the maximin height of the soccer ball and how long does it take for the ball to reach this height
Answers
Answer:
Nice!
Step-by-step explanation:
Someone please help me.
Answers
Felipe's age is ≥ 5
Step-by-step explanation:
Difference of F's age and 4: f - 4
Twice: 2 (f -4) ≥ 2
2f - 8 ≥ 2
2f ≥ 10
f ≥ 5
Answer:
Step-by-step explanation:
NO FILES PLEASE! THANKS!
Answers
Answer:
C, A and D
Step-by-step explanation: