If a wheel of a bicycle covers 440m in 200 rotation. find the area of a wheel.
Answer:
7/22
Step-by-step explanation:
Area = 400/200 × 400/200 ×1/4 × 7/22 = 7/22
Step-by-step explanation:
Total distance covered in 200 rotation = 440 m
Distance covered in 1 rotation
= 440 / 200
= 2.2 m
Distance covered in 1 rotation = Circumference of circle so
circumference = 2πr
2.2 = 2 * 22/7 * r
2.2 = 6.28 r
r = 2.2 / 6.28
r = 0.35 m
Now Area of the wheel
= πr²
= 22 /7 * 0.35 * 0.35
= 0.385 m²
Hope it will help :)❤
What point of the number line represents the sum of 3/4 + 3/4
Answer:
C
Step-by-step explanation:
3/4+3/4=6/4=1 2/4=1 1/2
C is located halfway between 1 and 2, so you know it is 1 1/2.
A fraction is a way to describe a part of a whole. The number on the number line is represented by point C.
What is a Fraction?A fraction is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25.
To plot the fraction on the number line, the sum of the number line is needed to be found. Therefore, the sum of the number line can be written as,
[tex]\rm Sum = \dfrac34 + \dfrac34 = \dfrac64[/tex]
Thus, the sum of the fraction is (6/4), which can also be written as 1.50.
The number on the number line is represented by point C.
Learn more about Fraction:
https://brainly.com/question/1301963
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A survey of 120 twelfth-graders finds that 36% were carrying more than $15 on the day of the survey. Use the margin of error to complete the following. Round to the nearest whole percent. An interval that will likely include the proportion of students in the population of twelfth-graders who carry more than $15 is ?
Answer:
An interval that will likely include the proportion of students in the population of twelfth-graders who carry more than $15 is 960
Step-by-step explanation:
For example, Condition 1: n(.05)≤N
• The sample size (10) is less than 5% of the population (millions of musicians), so
the condition is met.
• Condition 2: np(1-p)≥10
• =
2
10
= .2
• 1 − = 10 .2 1 − .2 = 1.6 . This is less than 10 so this condition is not
met.
It would not be practical to construct the confidence interval.
The monthly snowfall on Sugar Mountain dropped from 26 inches to 20 inches. What is the percent decrease?
Answer:
about 23% decrease
Step-by-step explanation:
26-20=6
6 divided by 26 = 0.230
0.230 x 100 = 23
Answer:
24
Step-by-step explanation:
first work out the difference (decrease) between the two numbers you are comparing. Next, divide the decrease by the original number and multiply the answer by 100 to get the answer
PLEASE HELP
5.
If t= -3, then 3t^2 +5t +6 equals
A. -36
B. -6
c. 6
D. 18
Answer:
D
Step-by-step explanation:
substitute t=-3 in the equation
3(-3) squared +5(-3)+6=18
Step-by-step explanation:
According to the question , value of t = (-3) . So on directly putting t = (-3) in expression we have ,
[tex]\tt \to 3t^2 +5t+6 \\\\\tt\to 3(-3)^2+5(-3)+6 \\\\\tt\to (3)(9)-15 +6 \\\\\tt\to 27 - 15 +6 \\\\\tt\to \boxed{\orange{\tt 18 }}[/tex]
There is a bag filled with 3 blue and 4 red marbles a marble is taken at random from the bag the colour is noted and then it's replaced another marble is taken at random what is the probability of getting at least 1 red?
Answer:
A marble is taken at random from the bag, the colour is noted and then it is not replaced.
Mhanifa can you please help? This is due asap
Answer:
NoStep-by-step explanation:
ΔWXZ and ΔYVZ
Lets verify the ratio of corresponding sides:
WZ/YZ = XZ/VZ16/22 = 11/88/11 = 11/88² = 11²8 = 11As we see the equation is false, so the triangles are NOT similar
PLEASE HELP I WILL MARK BRAINLIEST!! :)
Answer: The answer is J. because there are 180 pages in her book
Step-by-step explanation:
Answer:
The answer is "Not here" because there are 180 pages in Donna's book.
A student bought some markers in a pads of paper if the marker cost $2 each in the pads of paper cost $4 each he brought a items and all and spent $26 how many markers and how many pads of paper did he buy?
Answer:
$4
Step-by-step explanation:
We need to set up an algebraic expression to solve this problem:
Let n= cost of a notepad
Let p= cost of a pen
First set up an expression for Cynthia's purchase:
cost of notepads*number of notepads + cost of pens*number of pens = total cost
n*2 + p*3 = 40.30
Rewrite as:
2n + 3p = 40.30
Next, set up an expression for Annie's purchase:
Here we will be using the same variables
n*3 + p*5 = 61
Rewrite as:
3n + 5p =61
Now, set up a system of equations:
2n + 3p = 40.30
3n + 5p =61
A system of equations can be solved in several ways, here I will use the addition/elimination method
For this method one of the variables must be able to be eliminated
Step 1: Pick a variable to eliminate
Here I will eliminate n
Step 2: make the selected variables in the equations equal and opposite so that they cancel out when the equations are added together
(2n + 3p = 40.30)(-3)
(3n + 5p =61)(2)
-6n - 9p = -120.90
6n + 10p = 122
Step 3: add vertically
-6n - 9p = -120.90
6n + 10p = 122
p = 1.10
Step 4: Figure out the other variable by inputting the answer you just got back into the original equation
2n + 3(1.10) = 40.30
2n + 3.30 = 40.30
-3.30 37
2n = 37
/2 /2
n = 18.5
One notebook = $18.50
One pen= $1.10
18.50+1.10= $19.60
2nd step
We must first set up an algebraic expression
total=15 pencils
total=9 pens
The total amount is the price of one pencil*15
To figure out one pencil:
10 pencils are $24
1 pencil is $2.40
Total= $36
9 pens = 36
Therefore 1 pen is $4
En un corral hay 200 animales los cuáles el el 25 son patos el 50% son guajolotes y el 75% son gallinas ¿Cuántos animales son patos , guajolotes y gallinas
Answer:
Step-by-step explanation:
In a pen there are 200 animals,
25 of which are ducks,
Number of turkeys
50% are turkeys
= 50% × 200
= 100 turkeys
and
Numbers of chickens
75% are chickens.
= 75% × 200
= 150
How many animals are ducks, turkeys and chickens?
#5 Need help with this
Answer:
Maple grove associates
Step-by-step explanation:
Which is a diagonal through the interior of the cube?
Answer:
BGStep-by-step explanation:
Diagonal through the interior of the cube is BG.
The rest are the diagonals of the faces.
HELP ASAP PLEASE.
a) according to the map on the left, Central Park is about 50 blocks long by 9 blocks wide. what is the approximate area of the park? show your work.
b)lets say the area of the map is 21 square inches. you want to make q enlarged map of central park to take with you on your journey. describe how you can determine the area of the the enlarged map.
c)supposed the scale factor you will ise to enlarge the map is 5:1. what is the approximate area of the park of the park in your enlarged drawing.
d) how did you apply proportional reasoning as you worked through these problems?
Answer:
pls give brainlist
Step-by-step explanation:
a. [tex]\frac{50 blocks (L)}{9 blocks(W)\\}[/tex] 50 x 9 = 450. A=450
b. I can scale the unit rate of the area given above and largen the area of the map. Ex. [tex]\frac{7}{3}[/tex]=[tex]\frac{21}{6}[/tex] <---(scaled by 2)
Then we can enlarge it however we want so,
[tex]\frac{21}{6}[/tex] = [tex]\frac{42}{12}[/tex] <--(scaled by 2 once more)
If the statement above is true then we can scale times 4.
[tex]\frac{7}{3}[/tex]= [tex]\frac{42}{12}\\[/tex] <---(scaled by 4)
A= [tex]\frac{42}{12\\}[/tex]
all i can give u at the moment , if u go on M a t h w a y it can help
Answer:
for them to get brainliest <3
Step-by-step explanation:
help me please someone...........
PLEASE HELP....
Which of the following could be the side lengths of a triangle?
A.
15, 16, 33
B.
14, 16, 34
C.
12,15, 30
D.
17, 18, 32
Answer:
i think B
Step-by-step explanation:
i think B
Answer:
D is one (in my opinion)
Step-by-step explanation:
Only D works, because the two least (smallest) side lengths must exceed the greatest side length in order to actually construct a
Find the derivative of f(x) = -4x2 + 11x at x = 10.
a) 19.5
b) -69
c) 30
d) -300
Answer:
-69 (Answer b)
Step-by-step explanation:
Apply the power rule for differentiation:
(d/dx){-4x^2 + 11x} = -8x + 11
Now substute 10 for x:
f '(x) = -8(10) + 11 = -80 + 11 = -69 (Answer b)
Answer:
b
Step-by-step explanation:
Using the power rule to differentiate each term
Given
f(x) = - 4x² + 11x , then
f'(x) = - 8x + 11
At x = 10
f'(10) = - 8(10) + 11 = - 80 + 11 = - 69 → b
WORTH 40 POINTS
write an equation given the following transformations
a hyperbola that is moved left 2 and up 5
all the info i have. steps would be appreciated
Answer:
Step-by-step explanation:
In this section, we will focus on graphing hyperbolas that open left and right or ... To easily sketch the asymptotes we make use of two special line segments ... From the center (5,4), mark points 3 units left and right as well as 2 units up and down. ... standard form for the equation of a hyperbola given the following information.
Can someone explain how to do these thx
Answer:
i have made it in above picture
hope it helps
how do I find the value of H in: h + 4 1/2 = 7
Answer:
5/2 or 2 1/2, or 2.5
Step-by-step explanation:
We know that 4 1/2 is 4.5.
Take 4.5 to the other side.
h=2.5
By the way, can you follow me on Brainly?
Thanks!
Answer:
5/2, or 2 1/2
Step-by-step explanation:
To find the value of h you want to get h by itself, so you must subtract 4 1/2 from both sides of the equation. 4 1/2 can be rewritten as 9/2, but you must find a common denominator between 7 and 9/2. A common denominator can be 2, if 7 is changed into 14/2. The equation is now 14/2 - 9/2, which gives you 5/2 or 2 1/2.
The measure of one side of a square is
x + 5. Which expression represent the area and perimeter of the square.
Answer:
Area of a Square is the square of its side. In your question, the length of the side of the square is 5x and the calculates to (5x^2)square units.
Area of Square = (side^2)
Step-by-step explanation:
1. Matt used a cup shaped like a cylinder to drink his morning milk. The dimensions of
the container are shown below.
width- 8 cm
height-12cm
Which measurement is closest to the area of the base of the container in square
centimeters?
Answer:
50.29 cm²
Step-by-step explanation:
Base area of a cylinder = πr²
π = 22/7
r = radius
For circular objects, the width is the same as the diameter of the object
the diameter is the straight line that passes through the centre of a circle and touches the two edges of the circle.
A radius is half of the diameter
radius = 8/2 = 4cm
Base area = (22/7) x 4² = 50.29 cm²
Find the area of the regular 18-gon with radius 10 mm
Answer:
Step-by-step explanation:
Find the area of the regular 18-gon with radius 10 mm
Solve for x.
Please help me.
PLEASE HELPPPPPP me NOW IF U KNOW THE RIGHT ANSWER OMGGG
9514 1404 393
Answer:
68°
Step-by-step explanation:
Chords of the same length subtend arcs of the same measure.
Chord EF = Chord FG . . . . given
Arc EF = Arc FG = 68°
What is the difference 1 1/2 - 3/4 ?
Answer:
19/4
Step-by-step explanation:
Help me please, I've been stuck for a hot minute
Answer:
b. 5z-10 = 5(z-2) c. c-2c^2= c(1-2c) d. r+r+r+r= r(1+1+1+1)= 4r e. 2x-(1/2) = (1/2)(4x-1)
Explanation:
you just need to find a common factor that you can divide out of each term. ex. with the 5z-10 both 5z and 10 are divisible by 5, so you can factor that out. to check the answers just multiply it. if you still don't get it, look up "factoring binomials"
what is pie in algebra?
Answer:
3.14
Step-by-step explanation:
Answer:
3.14
Step-by-step explanation:
Hi, pie in algebra is 3.14 when rounded up.
I hope this helps :)
For Bill's birthday his mom is bringing donuts to school.
She has a coupon to get 2 dozen donuts for $8.00.
How much would just one dozen donuts cost at this price?
Let c represent the cost of the donuts.
Equivalent ratios:
One dozen donuts would cost
Mike and Julie receive $20,000 in gifts from friends and relatives for their wedding. They deposit the money into an account that pays 2.75% interest, compounded daily.
Will their money double within 10 years?
Will their money double within 15 years?
Answer:
A= P(1+r/n)^nt
P=20,000
r=2.75%/100=0.0275
n=365
t= 10 and 15
Will their money double within 10 years?
A=20,000(1+0.0275/365)^365t
=20,000(1.00007534)^365(10)
=26,330.340 --> $26,330.34
No
Will their money double within 15 years?
A=20,000(1+0.0275/365)^365t
=20,000(1.00007534)^365(15)
=30,211.321 --> $30,211.32
No
Step-by-step explanation:
Help me! True or false????
Answer:
true
Step-by-step explanation: