Answer:
r = 8 ft
Step-by-step explanation:
Area of a circle => πr²
We are told in the question that:
The area of circle Z is 64Pi ft²
= 64π ft²
What is the value of r
We equate
πr² = 64 π
r² = 64 π/π
r² = 64
We square root both sides.
√r² = √64
r =>8 ft
The radius of the given circle Z is 8ft which was solved using the area of the circle
Data;
Area = 64π ft^2radius = rArea of a CircleThe formula of area of a circle is given as
[tex]A = \pi r^2[/tex]
Let's substitute the values and solve
[tex]A = 64\pi\\A = \pi r^2 \\64 \pi = \pi r^2\\[/tex]
divide through by π
[tex]64\pi = \pi r^2\\\\64 = r^2\\[/tex]
Let's take the square root of both sides
[tex]r^2 = 64\\r = \sqrt{64} \\r = 8ft[/tex]
The radius of the circle Z is 8ft
Learn more on area of a circle here;
https://brainly.com/question/15673093
Isabella has 63 hair bows. Isabella's sister has h more hair bows than Isabella. Choose the expression that shows how many hair bows Isabella's sister has.
Answer:
(h+63)
Step-by-step explanation:
Given that,
Isabella has 63 hair bows.
Isabella's sister has h more hair bows than Isabella. It means,
Isabella's sister = h+63
h and 63 are added as Isabella's sister has h more hair bows than Isabella.
Hence, the expression would be (h+63).
I need help what’s the answer!!
You're right, 20 is correct
20 x 20 x 20, aka [tex]20^3[/tex] = 8000,
so [tex]\sqrt[3]{8000} = 20.[/tex]
On Wednesday evening Sonto spent 1/2 hour doing homework,45minutes doind housework,1 hour visiting friends and 1 1/2 hour television. Write this down the information as a ratio
Answer:
On Wednesday evening Sonto spent 30 minutes doing homework, 45 minutes doing housework, 60 minutes visiting friends and 90 minutes watching television. Write this down the information as a ratio
Step-by-step explanation:
Total amount of time = 225 minutes
2/15 Homework
1/5 Housework
4/15 Visiting friends
2/5 Watching TV
Whole number ratio
2 : 3 : 4 : 6
What is the length of one side of a cube that has a surface area of 1,734 square mm?
Answer:
a = 17
Step-by-step explanation:
1,734 = 6a^2
1,734/6 = 6a^2/6
[tex]\sqrt{289}[/tex] = [tex]\sqrt{a^2}[/tex]
a = 17
Answer:
side = 17 mm
Step-by-step explanation:
1734/6 = 289
√289 = 17 mm
A couple decides to keep having children until they have a girl, at which point they will stop having children. They also agree to having a maximum of three children. The table below shows the probability distribution of X=, equals the number of children such a couple would have.
X=# of children 1 2 3
P(X), .5 .25 .25
Given that \mu_X=1.75μ
X
=1.75mu, start subscript, X, end subscript, equals, 1, point, 75 children, find the standard deviation of the children such a couple would have.
Round your answer to two decimal places.
\sigma_X\approxσ
X
≈sigma, start subscript, X, end subscript, approximately equals
children
Answer:.83
Step-by-step explanation:
Khan academy
From the discrete distribution given, the standard deviation is of 0.83 children.
The distribution is:
[tex]P(X = 1) = 0.5[/tex]
[tex]P(X = 2) = 0.25[/tex]
[tex]P(X = 3) = 0.25[/tex]
The mean is 1.75.The standard deviation is the square root of the sum of the difference squared between each value and the mean, multiplied by it's respective probability.Hence:
[tex]\sqrt{V(X)} = \sqrt{0.5(1 - 1.75)^2 + 0.25(2 - 1.75)^2 + 0.25(3 - 1.75)^2} = 0.83[/tex]
The standard deviation is of 0.83 children.
A similar problem is given at https://brainly.com/question/24188569
Which description can be written as the expression StartFraction 8 Over 21 n EndFraction?
Answer: It is the quotient of 21 times and number and 8.
Answer:
The answer is "A"
Step-by-step explanation:
please make me b r a i n l i e s t thx
153 oz to ___lbs ____oz
Answer:
153 oz to 9.5625 lbs
Step-by-step explanation:
You can round 9.5625 lbs to 8 or just say 9.5
28 people in 4 rooms: 63 people in 9 rooms. Are these ratios proportional?
the ratios are ratio proportional
I need help on this question I got 145.13 but i dont know what I did wrong
Answer:
145.12
Step-by-step explanation:
3.14 * 16 / 2 + 120
I basically got the same answer
Which set of ordered pairs represents y as a function of x?
Answer:
D is the correct answer
Explanation:
the following function satisfies each output to its input for the set D
f(x)=x/2
let's check each pair:
0/2=0
-1/2=-0.5
-2/2=-1
-3/2=-1.5
-4/2=-2
the reason why A, B, and C can't be pairs of inputs and outputs x and y it's because a variable x can't have more than one y (that's a behaviour of an equation not a function!)
- in A x=-1 | y=2, -2 and this wrong
- in B x=3 | y=9, 16 and this wrong
- in C x=0 | y=0, 1 and this wrong
I hope this was helpful
Ashton had 28 1/2feet of wrapping paper. He uses 3/8
feet wrapping paper to wrap each gift
How many gifts can Ashton wrap?
Answer:
Step-by-step explanation.
here is a trick
try turning both fractions into a decimal and then divide then. It will be much easier.
please help me i will mark you brainliesttttttttttttttttttttttttttt
Answer:
ion no but pls mark me ill tell my brother to anser it and help you
Step-by-step explanation:
IM GIVING 20 POINTS
What is the area of a square with side lengths of 3/5 units?
15/15
9/25
6/10
3/5
Answer:
you get 9/25
Step-by-step explanation:
formula for area of square
=s^2
plug in
3/5^2
calculate
you get 9/25
Hey there!
To find the area of a square, multiply the side length by itself, also known as sqaring the side length.
We must solve 3/5 x 3/5.
3/5 x 3/5 = 0.36
The units we'll use is because units are the unt we're given, and it is squared because it is the area of a shape.
Your final answer is 0.36 .
Hope this helps!
6. Write an inequality that is represented by the graph. (A.REI.D.12)
8
6
4
2
0
-8
-6
24
2
6
-2
-2.
4
16
Answer:
sdsdsddssssssssssssssssssssss
Step-by-step explanation:
sddsdssdsdds
what is the Constant in
3x + 7
Calculate this right and you will get the brainlist in
75 POINTS!!!! ASAP!!!! No Links!
PLEASE SHOW WORK
A whispering room is elliptical. It measures 32 feet wide and 66 feet long. If a person is standing at one focus, her whisper can be heard by a person standing at the other focus. How far apart are the two people?
Answer: 57.72 ft apart
Step-by-step explanation:
Foci distance from centers given by sqrt(33^2-16^2)
Multiply by two to get the distance from each other
The graph represents the profit earned on the sale of boxes of cookies. What does the slope represent?
Answer:
There is no graph
Step-by-step explanation:
A line passes through the point (8, 7) and has a slope of 5/4 Write an equation in slope-intercept form for this line.
About 32% of the 104 children ate a school picnic ate hamburgers. The rest ate hotdogs. How many children ate hotdogs at the picnic
Answer: 71 children ate hotdogs at the picnic.
Step-by-step explanation:
Given: About 32% of the 104 children who ate a school picnic ate hamburgers.
The number of children ate hamburger = 32% of (104 children)
= 0.32 x 104
= 33.28 ≈ 33
Thus, the number of children ate hamburger = 33
Number of children ate hotdogs = 104-33 = 71
Hence, 71 children ate hotdogs at the picnic.
Barnacles and corals are two types of animals that live in the ocean. Both animals build a hard layer of calcium carbonate around their soft body parts. What is the MOST LIKELY reason that they build these layers?
Answer:They do this so they can be safe from predators.
Step-by-step explanation: They make this hard layer so it can help protect the vulnerable soft parts of their body from other fish or mammals.
What is the area of the trapezoid?
Answer:
26 this is because 4x5=20 then add the triangle which is 3x4 ÷ 2 equalling 26
Answer:
Step-by-step explanation:
(5+8)/2 = 13/2 = 6.5
6.5*4 = 26m²
The formula for the area of a trapezoid is the same as a trapezium :
(a+b)/2 *h = Area
PLEASE HELP ME!
In a classroom of 50 students, 30 of them prefer iPads and the rest prefer laptops. what is the ratio of iPads to laptops? Answer in simplest form. If you could, please write out an explanation.
Answer:
60;40
Step-by-step explanation: 50* 2 = 100
so multiply every thing else by it to
in simplest form tho itd be 3;2
Hellohello, if you able to help me then please do. (:
Answer:
g=12
Step-by-step explanation:
3 + g = 15
g = 15-3
g = 12
Select all the statements about the graphs of g (x) - 5 a? and f (x) = x2 that are true.
1. f and g open in the same direction.
2. f and g intersect twice.
3. f and g have the same axis of symmetry.
4. f and g have the same vertex.
5. g is wider than f.
Answer:
Use photo math, take a picture of the equation, and it will show everything you need to know about it!!!
What is the area of a rectangular shaped yard enclosed by a fence that is 35 feet along the North side and 20 feet along the west side?
Answer:
700 ft
Step-by-step explanation:
35ft x 20ft = 700ft
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Answer: a
Step-by-step explanation:
What is:
(9t+5)+(3t-6)
simplified?
Answer:
12t - 1
Step-by-step explanation:
(9t+5) + (3t-6)
9t + 5 + 3t - 6
12t - 1
A helicopter flew north 325 meters and then flew east 500 meters. How far is the helicopter from its starting point?
Answer:
596.34m approx
Step-by-step explanation:
Given data
Let the Starting point be x
A helicopter flew north 325 meters from x
Then flew east 500 meters
Let us apply the Pythagoras theorem to solve for the resultant which is the distance from the starting position
x^2= 325^2+500^2
x^2=105625+250000
x^2= 355625
x= √355625
x=596.34m
Hence the distance from the starting point is 596.34m approx
help pls. will mark Brainest
Answer: 36
Step-by-step explanation: multiply 2 6 and 3