Answer:
[tex]20.25\pi\:\mathrm{m^2}[/tex]
Step-by-step explanation:
Formulas to know:
Area of a circle: [tex]A=r^2\pi[/tex]Circumference of a circle: [tex]C=2r\pi[/tex]Since we know the circumference, we can use formula for the circumference of a circle to find the circle's radius:
[tex]9\pi=2r\pi,\\9=2r,\\r=4.5[/tex]
Now we can plug in [tex]r=4.5[/tex] into the formula for an area of a circle:
[tex]A=4.5^2\pi=\boxed{20.25\pi\:\mathrm{m^2}}[/tex]
Answer:
20.25 pi
Step-by-step explanation:
The circumference of a circle is given by
C = 2 * pi *r
9 pi = 2 * pi *r
Divide each side by 2pi
9pi / 2 pi = 2 pi r / 2 pi
4.5 = r
Now we can find area
A = pi r^2
= pi ( 4.5)^2
20.25 pi
Determine which of the following statements is true for the function
g(x) = 415 - 3x + 24- 1.
Answer:
?
Step-by-step explanation:
what are the statements??
I need this answered
Answer:
a please would be nice
F is inversely proportional to d^2.
When F = 5, d = 9
Work out d (positive value rounded to 2 DP) when F = 3
Answer:
11.6
Step-by-step explanation:
F = k/ d^2
where k = proportionality constant
k = Fd^2
k = 5 * 9^2
k = 5*81 = 405
d = (K/F)^1/2
d = (405/3)^1/2
d = 11.62 =11.6
Answer:
11.62
Step-by-step explanation:
F is inversely proportional to d^2, so
[tex]F=\frac{k}{d^2}[/tex]
for some constant k. To find k plug in given values for F and d.
[tex]5=\frac{k}{9^2}\\5=\frac{k}{81}\\k=405[/tex]
Now you can find d for F = 3.
[tex]3=\frac{405}{d^2}\\\\3d^2=405\\\\d^2=135\\d=\sqrt{135}\approx 11.62[/tex]
what is difference between poor maths and maths lit
Answer:
Mathematics deals with theories and concepts and problems not necessarily encountered in everyday life (think trigonometry, algebra and basic calculus). In contrast to this, mathematical literacy deals with common practical problems like budgeting, interest calculations
Step-by-step explanation:
Step-by-step explanation:
Poor Math:
1+1=3
Lit Math:
e = mc^2
a number with 2 decimal places, that is bigger than 4 1/5 but smaller than 4.25
Answer:
4.21, 4.22, 4.23,
4.24 (choose any one)
Step-by-step explanation:
since 4 1/5 is 4.20, so the numbers in between 4.20 and 4.25 are 4.21, 4.22, 4.23,
4.24 (choose any one)
I need help fast please
Answer:
336
Step-by-step explanation:
hope this helps sorry if not correct
Simplify 2 (csc ^2 0-cot^2 0).
Answer:
Step-by-step explanation:
answer is 2 because cosec^2 theta-cot^ theta is 1and when u multiply 1 and 2 answer is 2
jake plays baseball with two wooden bat one made from hickory and one made from white ash what is the weight of the white ash if his hikory bat weght 32.4 ounse and both bat togethere weight 64.33
The relationship between the length and weight of certain sea turtles can be approximated by the equation L = 0,55 W,
where L is the length in feet and W is the weight in pounds. If a sea turtle is 2.5 feet long, which is closest to its weight?
Answer:
4.55 pounds
Step-by-step explanation:
From the above question , we are told that:
The relationship between the length and weight of certain sea turtles can be approximated by the equation
L = 0.55 W,
where
L is the length in feet
W is the weight in pounds. If a sea turtle is 2.5 feet long, which is closest to its weight?
L = 2.5 feet
Hence,
2.5 = 0.55W
W = 2.5/0.55
W = 4.5454545455 pounds
Approximately, weight of the sea turtle in pounds = 4.55 pounds
20 POINTS BRAINLIEST FOR CORRECT ANSWER !! PLEASE HELP
Describe the similarities and differences between the graphs of the functions in items 8 and 9. How are these similarities and differences indicated by the functions themselves?
Item 8: y=x^2-3x-4
Item 9: y=-x^2+3x+4
Answer:
Step-by-step explanation:
similarities:
both items (equations) have the same roots: (-1,0) and (4,0),
both items are in quadratic form
both have a relative min/max at x=1.5
differences:
both have different y-intercepts:
item 8: (0,-4)
item 9: (0,4)
HELP, i don't understand this I put all my points pls help me with this
Answer:
I cant see
Step-by-step explanation:
Answer:
2+5*3+6*2+7*3+8*2 = 66
66/5 = 14
mean = 14
hope this helps
Step-by-step explanation:
Move numbers to the table to show the value of x that satisfies each equation.
Equation value of x
3x = 27
3+ = 1
9
Answer:
[tex]x = 9[/tex]
Step-by-step explanation:
Given
[tex]3x = 27[/tex]
Required
Solve for x
[tex]3x = 27[/tex]
Divide both sides by 3
[tex]\frac{3x}{3} = \frac{27}{3}[/tex][tex]x = \frac{27}{3}[/tex]
[tex]x = 9[/tex]
Ned types 360 words in 6 minutes. Nate types 220 words in 4 minutes.
Who would type more words in 10 minutes? What assumptions do you
make?
Answer and step-by-step explanation:
We know that Ned types 360 words in 6 minutes while Nate types 220 words in 4 minutes. We are then asked to find out who would type more words in 10 minutes.
To solve this, we need to first reduce the fraction of how many words can be typed to a certain amount of minutes to find how many minutes exactly can Ned and Nate type in one single minute.
Ned types 360 words in 6 minutes, our fraction would be :
[tex]\frac{360}{6}[/tex]
Nate types 220 words in 4 minutes, our fraction would be :
[tex]\frac{220}{4}[/tex]
Now divide both sides by their LCM :
Ned:
[tex]\frac{360/6}{6/6}[/tex]
Nate:
[tex]\frac{220/4}{4/4}[/tex]
Ned :
[tex]\frac{60}{1}[/tex]
Nate:
[tex]\frac{55}{1}[/tex]
This means that in one minute, Ned can type 60 words while Nate can type 55 words. Since we know that 60 is a greater number than 55, we can assume that Ned will type more words than Nate in 10 minutes.
easy brainliest, please help me..
-22 points in total with brainliest-
(only if you get it correct)
Answer:
Solution given:
arcCD=2×35=70°[inscribed angle is half to the central angle]
r=10in
area of segment :[tex] \frac{70}{360} π×r²[/tex]
:[tex] \frac{70}{360} π×10²[/tex]
=[tex] \frac{175}{9} π[/tex] in²
C.[tex] \frac{175}{9} π[/tex] in² is a right answer.
Working mothers who earn $30,000 or less per year receive a rebate on before and after school care of 75%, plus a school bonus of $6,000 that only applies to this category of earnings. Each dollar earned above this amount and up to $40,000 reduces the rebate to 55%, and for any amount above this, the rebate drops to 30%. There are three mothers – Jade earns $40,001, Emily earns $38,000 and Lucy earns $29,550. $, , ? *
what is the graph function f(x) = x^3 +9x^2 +2x -48?
Answer:
y=9x^2+2x-48
Step-by-step explanation:
a1 = 7; an = a(n-1) + 6
Find the first 6 terms of the sequence.
Step-by-step explanation:
you really need help with that ? it is all already given in the problem description. you only need to do the 6 little calculations (anyways adding 6). what is the problem ?
a1 = 7
a2 = a1 + 6 = well ? ... ... ... 13, of course
a3 = a2 + 6 = 13 + 6 = weeeeelllll ?
a4 = a3 + 6 = 13 + 6 + 6 = weeeellll ?
a5 = a4 + 6 = 13 + 6 + 6 + 6 =
a6 = a5 + 6 = 13 + 6 + 6 + 6 + 6 =
I am really not doing your very basic and just "mechanical" work of doing simple calculations in your head or on your calculator.
I help you, when you have a problem understanding the issue, but not when you ask me to do your pure "mechanical" job that every elementary school student can do easily.
to help with the understanding, such a sequence (using this example) can then be described and every element calculated by
a(n) = a(1) + 6*(n-1)
so, for example
a20 = 7 + 6*19 = 121
so, and now that you truly understand the concept, just use your calculator (if you truly cannot do that in your head) and do your job.
What is the y intercept for the equation –2x + 5 = –10?
a.) (0, 5)
b.) (0, –2)
c.) (0, 2)
d.) (0, –5)
Check all that apply. π/3 is the reference angle for:
A.7π/3
B.19π/3
C.2π/3
D.15π/3
Answer:
A,B,C
Step-by-step explanation:
A.p.e.x
This past winter, 643 flamingos migrated to Gordon Lake. A researcher states that the number of flamingos migrating to the lake is decreasing by 12 birds every year. Which of the following represents the number of flamingos, n, that will migrate to the lake t winters from last winter if the researcher’s trend continues? A. t = 643 - 12n B. n = 643 - 12t C. t = 12 - 643n D. n = 12 - 643t
Answer:
n=643-12t
i had this question on an exam and got it right
solve the equation
2x^2+8x-1=0
by completing the square.
give answer to 2 decimal places
The circumference of a compact disc is 28.26 cm. What would the radius of the disc be?
Answer:
88.7364
Step-by-step explanation:
3.14 TIMES 28.26
Add and subtract the following fractions. Remember to find the LCD first.
1. 1/2 + 1/3
2. 1/6 + 1/8 + 1/3
3. 4/11 + 5/22 + 3/44
4. 3/4 - 3/8
5. 11/15 - 3/5
Answer:
1. 5/6
2. 5/8
3. 29/44
4. 3/8
5. -8/15
Determine the central angle of a sector which has a radius of 8 inches and an area of 78.2 square inches
80
160
235
140
Answer: 140
Step-by-step explanation:
1
Write an algebraic
expression for:
Seven added to five
times a number
Write an algebraic expression for: seven added to five times a number
Answer:
7 + 5x
Hiiioo! Can someone please help❤️❤️:D
Answer:
C
Step-by-step explanation:
Want two numbers multiply to get -30 and add to get -13
Answer:
-15 and 2
Step-by-step explanation:
-15 x 2 = -30
-15 + 2 = -13
Jill used 10 gallons of gas for every 50 miles she drive? how many gallons does she use if she drives 200 miles?
for brainiest:):):):):):):):)
Answer:
(a) 0.6
(b) 0.4
Step-by-step explanation:
If I am reading the little table right, You have made 9 shots, and have missed 6 of them. Therefore, in total, you have made [tex]9+6=15[/tex] shots.
The definition of probability is the number of events of a desired outcome divided by the total number of outcomes. Since you wish to make a shot for part a, the number of desired outcomes thus far is 9, out of 15 total shots. Thus,
[tex]P([/tex]making a shot[tex])=\frac{9}{15}=\frac{3}{5}=0.6[/tex]
Since making a shot and not making a shot are mutually exclusive events, and the only two events that could occur when shooting a basket, the probability of not making a shot and the probability of making a shot are all of the possible outcomes, and is thus equal to 1.
[tex]P([/tex]making a shot[tex])+P([/tex]missing a shot) [tex]=1[/tex]
[tex]P([/tex]missing a shot[tex])=1-P([/tex]making a shot[tex])[/tex]
[tex]P([/tex]missing a shot[tex])=1-0.6=0.4[/tex]
QED
PLEASE HELP ME I NEED TO PASSS
Which statements about the graph of the exponential function f(x) are TRUE? Select all that apply.
The asymptote is y = - 1
f(x) is positive for all x-values less than 1.
The y-intercept is 3
The domain is all real numbers
As x increases , f(x) approaches , but never reaches, -1
The x-intercept is 2.
The range is all real numbers
graph is in the picture
Answer:
Step-by-step explanation:
When x =3 y=-1
X =2 y =0
X=0 y =3
X = -1 y=6
So c g d f true
Answer:
F
Step-by-step explanation: