Answers
Answer:
A = (1/2)Cr
Step-by-step explanation:
You're supposed to observe that the circle area decomposes into what is approximately* a parallelogram with height equal to the circle radius and base equal to half the circumference. The area is then ...
A = bh
A = (1/2)Cr
If you fill in the formula for C, you find this matches the formula for the area of a circle:
A = (1/2)(2πr)(r) = πr²
_____
* In the limit, as the number of sectors approaches infinity, this is exactly a parallelogram.
Related Questions
Brian’s backyard is in the shape of a square. If the yard is 21 feet long, how much land does Brian’s backyard cover?
Pleaseee helppp
Answers
i need help because i do need help
Answers
Answer:
Step-by-step explanation:
the perimeter to ABCD is 13
the perimeter to WXYZ is 32.5
the scale factor enlargement is 2.5
a submarie is 671 feet below
Answers
Answer:
Uh I don't really know where the question was in that sentance, but if your trying to convert it to meters the answer is 204.521 meters.
Step-by-step explanation:
A new Youth Sports Center is being built in Hadleyville, The perimeter of the rectangular playing field is 430 yards. The length of the field is 5 yards
the width. What are the dimensions of the playing field?
The width is
yards
The length is
yards
Answers
Answer:
Width = 44 yards
Length = 171 yards
Step-by-step explanation:
given data
length of the field = 5 yards
Perimeter of the rectangular field = 430 yards.
solution
we consider here length of the field = L
and width of the field = W
as we know length of the field 5yards less than quadruple the width
so here
L = 4W - 5 .....................................1
and
Perimeter (P) will be here
P = 2(L + W) ............................................2
put here equation 1 value
430 = 2(4W - 5 + W)
solve it we get
W = 44
so here put value in eq 1 we het
L = 4W - 5
L = 4(44) - 5
L = 171
so, length of the field is 171 yards
You drive 351.6 miles using 16.4 gallons of gasoline. At this rate, how many gallons of gasoline would you need to drive 1000 miles? Round your answer to the tenth place (one place after the decimal).
Answers
Answer:
46.6 gallons
Step-by-step explanation:
351.6 miles = 16.4 gallons
1000 miles = x gallons
simply cross multiply
351.6 × x = 1000× 16.4 gallons
351.6x = 16400 gallons
x = 16400÷ 351.6
x= 46.643913538
x = 46.6 gallons (rounded to the tenth place)
find the slope of the line going through the points (-5,-7) and (0,13)
Answers
Answer:
slope= 4
Step-by-step explanation:
rise=20 run= 5 divide =4
Find the product. 2 · 14 = a0
Answers
Answer:
28
Step-by-step explanation:
Because the . Stands for multiplication so 14×2 is 28
A temperature recorded in Antarctica was −123°F. The temperature recorded in the Sahara Desert was 135°F. How many degrees warmer is 135°F than −123°F
Answers
Answer:
The Sahara Desert is 258 °F warmer that Antarctica.
Step-by-step explanation:
Temperature at Antarctica = -123 °F
Temperature at the Sahara desert = 135 °F
The difference in temperature = 135 - (-123) = 135 + 123 = 258 °F
This means that the Sahara Desert is 258 °F warmer that Antarctica.
Answer:
258
Step-by-step explanation:
What is the equation of the line passing through the points (4,8) and (-1,-12)
Answers
Answer:
y=4x-8 hope this helps:)
Step-by-step explanation:
Hey there!!
You can find the equation of a st.line passing through points using one point formula if only one point is given and slope is given , else find it by using two point formula (if 2 points are given).
Here, the points are, (4,8) and (-1,-12).
Using two point formula,
[tex](y - y1) = \frac{y2 - y1}{x2 - x1} (x - x1)[/tex]
Keep all values,
[tex](y - 8) = \frac{ - 12 - 8}{ - 1 - 4} (x - 4)[/tex]
Now, simplify them.
[tex](y - 8) = 5(x - 4)[/tex]
y - 8 = 5x -20
5x -y -20+8 = 0
Therefore, 5x - y -12 = 0 is the required equation.
Hope it helps...
f(x) = √x. and g(x)=8√x Describe the transformation of the graph of f into the graph of g as either a horizontal or vertical stretch.
Answers
Answer:
vertical stretch
Step-by-step explanation:
the 8 is outside the sq. root function, meaning it causes a vert. stretch
what are the three integers all less than 25 whose range is 10 and mean is 13
Answers
Let x be the first integer , y be the second integer , and z be the third integer
x < y < z < 25
We know that
Median=13
Median=(x+y+z)/3
13=(x+y+z)/3
x+y+z=39------> equation 1
Range=10
The range is the difference between the largest number within the set and the smallest number in the set
So range=z-x
z-x=10------> z=x+10-----> equation 2
to find the solution we will assume different values of x (See the attached table)
terms
x < y < z < 25
z=x+10
y=39-z-x
The solution can be
7,15,17
8,13,18
9,11,19
hope it helps!
Please help!
Translate the following into a algebraic equation:
Eight more then the difference of a number and sixteen.
(Variable is X)
Answers
1. eight more than. we know this must mean we are adding 8, so (+ 8)
2. the difference of a number and sixteen. we know the number (x) and 16 are being subtracting as indicated by the word difference, so (x-16)
now let’s combine them (x-16) + 8
let’s set it equal to 0, just to confirm it is correct.
(x-16) +8 = 0
x-16 = -8
x = 8
so substituting x for 8 in the translation: (8-16) + 8 = 0
-8 +8=0
it is correct! :)
6x + 4x - 9 = 1 what does x equal
Answers
Answer:
x = 1.
Step-by-step explanation:
6 x 1 = 6.
4 x 1=4.
4+6= 10.
10 - 9 = 1.
do y'all think high school is hard
Answers
Answer: hahaha. yes.
on the number line shown above what number represents the point half the distance between points A and B
Answers
When you switch your 8.5”x11” page from a portrait with 1” margins to landscape with 2” margins you lose how many square inches of writing space
Answers
Answer:
16.5 Squared Inches
Step-by-step explanation:
A 8.5''x11'' paper would be 7.5 in by 10 in with 1 inch margins. 7.5 x 10=75 in^2.
A landscape paper is 11''x8.5'' which would be 9 in by 6.5 in with 2 inch margins. 9 x 6.5=58.5 in^2.
75 inches squared-58.5 inches squared is 16.5 inches squared.
Therefore, you would lose 16.5 squared inches of writing space.
What is the value of t, if the value of x is 4?
T - 6 = x - 6
Answers
Answer: T=4
Step-by-step explanation:
Answer:
T=4
Step-by-step explanation:
When you plug in x, or 6, you get that x-6= -2.
Keeping that in mind, you then have to think what minus 6 equals negative 2, and 4-6= 4
The cost of coffee is determined by the type of coffee beans that are mixed together. The cost of a local mix of Arabica and Robusta beans is modeled by the equation below, where A = the pounds of Arabica and R = pounds of Robusta: (2 points) 700A + 1200R = 1,000,000 If a mixture contains 1000 pounds of Arabica beans, how many pounds of Robusta beans should be in the mixture?
Answers
Answer:
If a mixture contains 1000 pounds of Arabica beans, there should be 250 pounds of Robusta beans in the mixture.
Step-by-step explanation:
700A+1,200R=1,000,000
700(1000) +1,200R=1,000,000 - First, plug in the A value and simplify .
700000+1,200R=1,000,000 - Then, subtract 700,000 from both sides.
1,200R=300,000 - Finally, divide by 1,200 on both sides of the equation.
R=250 - This is your value for R, or the Robusta beans.
250 pounds of Robusta beans
Hope this helps!
PLEASE HELP ASAP!!
Which inequality is represented by the graph?
Answers
Answer:
The correct answer is B, y > 3/5x -1.5
Step-by-step explanation:
I highly recommend using this online graphing calculator called Desmos. It is an absolute lifesaver. I've been using it for over a year and it helps a lot with inequalities. Just plug in each inequality until you find the one that matches the graphs. I hope this helps you :)
there are 5280 feet in a mile. what part of a mile, in decimal form, will you drive until you reach the exit? pls someone help
Answers
Answer:
12
Step-by-step explanation:
you have to add everything
So I need to pull an all nighter and reset my sleep schedule. But the problem is I'm too stupid to solve some math, so I need your help.
I woke up this morning at 10:00 A.M.
Right now it is 12 A.M.
How long has it been?
And then what is that minus 36 hours?
Please help, I don't have that many points right now, but I will mark you Brainliest!
Answers
Answer:
14 hours, -22 hours
Step-by-step explanation:
10:00 AM to 12:00 PM = 2 hours
12:00 PM to 12:00 AM = 12 hours
12 hours + 2 hours = 14 hours
14 hours - 36 hours = -22 hours
Jenna traveled to Mexico. Before returning home, she converted all her pesos back into dollars. How much did she receive if she exchanged 1047.5 pesos at a rate of 5 dollars = 115.21 pesos?
Answers
Answer:
Dollars= $45.46
Step-by-step explanation:
Giving the following information:
Pesos= 1,047.5
Exchange rate:
5 dollars= 115.21
First, we need to determine the exchange rate for 1 dollar:
1 dollar= 115.21/5
1 dollar= 23.042 pesos
Now, for 1,047.5 pesos:
Dollars= total pesos / exchange rate
Dollars= 1,047.5/23.042
Dollars= $45.46
Answer:
45.46 dollars
Step-by-step explanation:
Which absolute value function, when graphed, represents the parent function, f(x) = |x|, reflected over the x-axis?
Answers
[tex]y=-|x|[/tex]
The [tex]a[/tex] value of an absolute value parent function deals with vertical stretches or compressions and it's relation with the x-axis.
Changing the [tex]a[/tex] value to its negative counterpart will reflect the graph over the x-axis (as shown in the picture).
Hope this helps.
頑張って!
Jenna flipped a coin 375 times. It landed tails up 300 times. What is the experimental probability of a flip resulting in tails up? Pls show work I give brainliest
Answers
Answer:
375-300=75
Step-by-step explanation:
6+2= need help asap plzz
Answers
Answer:
8
Step-by-step explanation:
Answer:
6 + 2 = 8
Step-by-step explanation:
you could use a calculator or your fingers!
HELPPPOO ASAP please!
Answers
Answer:
y = -1
Explanation:
Because the line is horizontal (intersecting the y-axis), you can ensure that the equation will be y = (a number). You can find which part of the y-axis it intersects by looking at the graph, and it intersects -1.
how to solve 4+y=9.5
Answers
Answer:
[tex]\framebox{\parbox[t][1.0cm]{4.50cm}{\addvspace{0.2cm} \centering $ x \;=\; {5.5} $ } }\\[/tex]
Step-by-step explanation:
[tex]4+y=9.5[/tex]
Let's simplify this equation.
To solve this equation, we must first subtract 4 from both sides of the equation.
[tex]y+4-4=9.5-4[/tex]
Let's see what we got.
[tex]y=5.5[/tex]
Now you got your answer!
Hope this helps!
The value of y is 5.5 .
Given,
4 + y = 9.5
Equation : 4 + y = 9.5
Let's simplify this equation
To solve this equation, we must first subtract 4 from both sides of the equation.
Resultant equation :
4 - 4 + y = 9.5 - 4
0 +y = 5.5
Thus the value of variable y = 5.5 .
Know more about algebra,
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which statement is correct
Answers
I have to make this unnecessary long because yeah but the correct answer I believe is going to be the second one
Evaluate k ^5 · m If k=2 and m=5
Answers
Answer:
160
Step-by-step explanation:
We are given the equation:
k^5 * m
and asked to evaluate for k=2 and m=5. Therefore, we must substitute 2 for k and 5 for m.
(2)^5 * 5
Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition and Subtraction.
Evaluate the exponent first.
—> (2)^5 = 2*2*2*2*2= 32
32 *5
Multiply 32 and 5.
160
The expression: k^5 * m when evaluate for k=2 and m=5 is equal to 160.
Number of pages of a five page article left to read if you read P pages in expression
Answers
Answer:
There are 5 pages.
5
You read p pages.
5 - p,
or
(5 - p) ≤ 0
The answer to this expression will equal the amount you read.
The number of pages left to read will be = 5 - P.
We have a five page article.
We have to determine number of pages of this article left to read if you read P pages in the form of expression.
Express the amount of questions left to solve if you have a total of 'x' questions to solve and you have solved 'y' number of question (y < x) in the form of expression.Assume the number of questions left be n. Then -
n = x - y
According to the question, we have -
The number of pages in the article = 5
The number of pages completed = P
Hence, the number of pages left to read will be = 5 - P.
To solve more questions on Expression modelling, visit the link below-
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