You choose 3 bananas from a group of 9. In how many ways can this be done?
Assuming the order of selection doesn't matter:
[tex] \displaystyle
\binom{9}{3}=\dfrac{9!}{3!6!}=\dfrac{7\cdot8\cdot9}{2\cdot3}=84 [/tex]
each of the circles below has an area of 196 pi square units find the perimeter of the rectangle
Answer:
Step-by-step explanation:
Alright lets get started.
We have given the area of each circle as 196 pi square units.
since the area of the circle =[tex]\pi*radius^2[/tex]
so,the radius of the circle :
[tex]196\pi =\pi r^2[/tex]
[tex]r^2=196[/tex]
[tex]r=14[/tex]
therefore the diameter of the circle will be [tex]2*radius=2*14=28[/tex]
the perimeter of the rectangle=[tex]2*(length+ width)[/tex]
the length of the rectangle will be addition of diameters of the circle=[tex]28+28=56[/tex]
breadth of the rectangle is equal of the diameter =28
Perimeter of the rectangle =[tex]2*(56+28)=168[/tex]
Answer 168 units.
The perimeter of the given rectangle is 168 units
Given that area of each of the circles are [tex] 196 \pi [/tex] sq units and we know that the area of circle [tex]=\pi r^{2}[/tex] using this radius of the circle will be
[tex]\pi r^{2} =196\pi\\ r^{2} = 196\\ \\ r=14[/tex]
So, the diameter of the circle is twice the radius which is
[tex]2\times r\\ 2\times 14 =28 [/tex]
Here we can see that length of rectangle is equal to twice the diameter of the circle and breadth is equals to twice the radius
[tex]length= 28+28=56[/tex]
[tex]breadth = 2\cdot14=28[/tex]
How to find the perimeter of the given rectangle ?
To find the perimeter we use the formula
Perimeter of rectangle = [tex]2\cdot(length + breadth)[/tex]
On solving we get ,
[tex]2\cdot(56 +28)\\ 168 units[/tex]
Therefore, The perimeter of the given rectangle is 168 units
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At 7 a.m. Gene left Austin and headed south at 10 miles per hour. At 8 a.m. Anne left from the same place and headed south on the same road. If Anne was 60 miles ahead by 3 p.m. on the same day, what was her speed?
Anne's speed is 20 miles per hour. If she returned home by the same path 7 hours and 30 minutes after she left, her average speed for the entire trip is 18.67 miles per hour while her average velocity is zero.
To answer this question, we need to calculate Anne's speed based on the information given. Gene started at 7 a.m. traveling at 10 miles per hour. By the time Anne starts at 8 a.m., Gene has already covered 10 miles (since he travels for 1 hour). The time from 8 a.m. to 3 p.m. is 7 hours. Both Anne and Gene travel the same path for these 7 hours, but Anne is 60 miles ahead of Gene by 3 p.m. Therefore, we need to calculate the total distance Gene traveled in 8 hours, add 60 miles to that distance, and then divide by 7 to find Anne's speed.
First, we determine Gene's total travel distance by 3 p.m., which is 10 miles/hour * 8 hours = 80 miles. Anne is 60 miles ahead, meaning she traveled 80 miles + 60 miles = 140 miles in 7 hours. Thus, Anne's speed is 140 miles \/ 7 hours = 20 miles per hour.
For part (c), if Anne returned home by the same path 7 hours and 30 minutes after she left, the total trip time would be 15 hours (7 hours to 3 p.m. and another 7 hours and 30 minutes back). Since the round trip distance is 140 miles out and 140 miles back, the total distance is 280 miles. Her average speed is total distance divided by total time, hence 280 miles / 15 hours = 18.67 miles per hour. The average velocity for the round trip is zero because she ends up at the starting point, so the overall displacement is zero.
Write an equation of the line that is parallel to 2x + 4y = 6 and passes through the point (6, 4).
Out of the 180 students at a summer camp, 72 signed up for canoeing. There were 23 students who signed up for trekking, and 13 of those students also signed up for canoeing.
Use a two-way table to organize the information and answer the following question:
Approximately what percentage of students signed up for neither canoeing nor trekking?
72%
40%
54%
98%
Find the slope of the line graphed below
The square of a positive number decreased by twice the number is 48. Find the number
Let the required positive number is x.
The square of the number is [tex]x^2[/tex]
Now, we have been given that square of a positive number decreased by twice the number. It means we have
[tex]x^2-2x[/tex]
Now, it is equal to 48. Hence, we have
[tex]x^2-2x=48\\ x^2-2x-48=0\\ x^2-8x+6x-48=0\\ x(x-8)+6(x-8)\\ (x-8)(x+6)=0\\ x=8,-6[/tex]
The number is positive, Hence, we have [tex]x=8[/tex]
Therefore, the required number is 8
46 points for yall, i need math help.
Compare the functions shown below:
f(x) = −3x − 5
g(x)
cosine function with y intercept at 0, negative 3 h(x) = 2 cos(2x − π) + 4
Which function has the greatest y-intercept?
a. f(x)
b. g(x)
c. h(x)
d. all three functions have the same y-intercept
Find all y-intercepts:
1. For f(x): when x=0 you have that f(0)=-3·0-5=-5, then y-intercept is a point (0,-5).
2. For g(x): from the task conditions you have that g(x) is cosine function with y intercept at 0, negative 3, then y-intercept is a point (0,-3).
3. For h(x): when x=0 you have that h(0)=cos(2·0-π)+4=cos(-π)+4=-1+4=3, then y-intercept is a point (0,3).
As you can see the greatest y-intercept has function h(x).
Answer: correct choice is C.
Answer:
C
Step-by-step explanation:
I just took the test. :)
Where does Pythagorean identity come from and how does it relate to right triangles
(05.07 mc) mandy needs to paint all the faces and the base of a model pyramid she made for her history project. the dimensions of the pyramid are shown here. what is the total surface area of the pyramid? a square pyramid is shown. the side of the square is 10 inches. the height of the triangular faces is 9 inches.
Answer:
280
Step-by-step explanation:
i n e e d p o i n t s
Find the dimensions of a rectangle whose width is 6 miles less than its length and whose area is 55 square miles.
Determine the equation of the line given by the graph.
A) y = 2x + 4
B) y = 4x + 2
C) y = 1/2x − 2
D) y = −2x + 4
The equation of the given line is y=2x+4. Therefore, option A is the correct answer.
From the given graph coordinates on the line are (-2, 0) and (0, 4).
What is slope of a line?The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.
Slope of a line, m= 4/2 = 2
Put m=2 and (-2, 0) in y=mx+b
0=2(-2)+b
b=4
Substitute m=2 and b=4 in y=mx+b
That is, y=2x+4
The equation of the given line is y=2x+4. Therefore, option A is the correct answer.
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Evaluate the expression for = −3 and = 5.
r^{-4} s^2
For Jack's birthday, his mom is taking him and 12 friends to the zoo. If she pays $11 for each ticket using her credit card, what impact will it have on the available credit left on her credit card?
The impact on Jack's mom's available credit after purchasing zoo tickets for Jack and 12 friends at $11 each will be a reduction of $143.
When Jack's mom pays $11 for each zoo ticket for him and his 12 friends, she will be purchasing a total of 13 tickets (one for Jack plus 12 for his friends). To calculate the total cost, multiply the number of tickets by the price per ticket:
Number of tickets: 13 (Jack + 12 friends)Price per ticket: $11Total cost: 13 tickets × $11 per ticket = $143The total impact on her credit card's available credit will be a reduction of $143. If she had some available credit limit before this purchase, we just subtract this amount from her available credit to determine the new available credit.
Find the perimeter of the polygon on this picture. I don’t know how to do this. Plz help
Let v1 = (-6,4) and v^2 = (-3,6). Compute the following
V^1 * V^2
Find the distance between the two points. (2, 5) and (–1, –5)
Use the given information to match the answers.
ABC is a right triangle.
1. 2√13
2. √5
3. 3√3
1. If b = 2 and c = 3, then a =
2. If a = 3 and c = 6, then b =
3. If a = 4 and b = 6, then c =
Solve 4x - 2= 86
thanks
The perimeter of a rectangular floor is 50 feet. find the dimensions of the floor if the length is four times the width.
The dimensions of the rectangle are width = 5 feet and length = 20 feet.
What is the perimeter of the rectangle?The perimeter of a rectangle is defined as the addition of the length and width.
The perimeter of a rectangle = 2(L + W)
Where W is the width of the rectangle and L is the length of the rectangle
We have been given that the perimeter of a rectangular floor is 50 feet.
The length is four times the width.
Let the width of the rectangle is x
So the length of the rectangle = 4x
The perimeter of a rectangle = 2(L + W)
50 = 2(4x + x)
50 = 2(5x)
50 = 10x
10x = 50
x = 50 /10
Apply the division operation,
x = 5
So the length of the rectangle = 4(5) = 20 feet
Therefore, the dimensions of the rectangle are width = 5 feet and length = 20 feet.
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An empty box weighs 200g the box is filled with birthday party goozy bags and now weighs 6.2kg Each goody bag weighs 150Work out how many goody bags are inside the box
Answer:
40
Step-by-step explanation:
In the ancient chinese proverb, there are more than how many different ways to breathe
Answer: 40
What we all know is that there is only one way to breath (inhaling and exhaling) For the ancient Chinese, as cited on ancient proverb there are forty (40) ways. These different ways promote relaxation thru breathing on the lower stomach.
Javier is 175% heavier than his brother . if javier brother weigh 80 pounds how much do javier weigh
Assuming that one-pint is equal to 473 ml., how many pints can be found in one liter?
Anyone know this geometry question? Will give brainiest
Which item produces the magnetic field in the electromagnet?
I’m sorry if the picture is blurry but try please! :)
Thank you all
Image option 2 will produce the magnetic field in the electromagnetism.
What is Magnetic field?The portion of space near a magnetic body or a current-carrying body in which the magnetic forces due to the body or current can be detected.
Given that figures,
In figure option 2 there are wires given and as we know when there is current flowing in a body or wire it will create an electric field as well as magnetic field.
Hence, image option 2 is the correct option.
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A total of 243 adults and children are at a movie theater. There are 109 more adults than children in the theater. If eh represents the number of adults and b represents the number of children, which system of equations could be used to find the number of adults and the number of children in the theater?
The system of the equations representing the situation is a+b = 243 and
a-b = 109 and values of a and b are 176 and 67 respectively.
What is a system of equations?A system of equations is a collection of two or more equations with a same set of unknowns.
Given that, A total of 243 adults and children are at a movie theater. There are 109 more adults than children in the theatre. If a represents the number of adults and b represents the number of children,
Establishing the equations according to the given situation,
a+b = 243......(i)
a-b = 109.......(ii)
Adding the equations, we get,
2a = 352
a = 176
Therefore, b = 67
Hence, The system of the equations representing the situation is a+b = 243 and a-b = 109 and values of a and b are 176 and 67 respectively.
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The recommended space needed for certain plant is 2 ft.² you want to plant 32 of this plants in a square garden .what is the length of each side of the garden if you follow the recommendation?
What is the total amount and the amount of interest earned on $6,500 at 6% for 25 years?
Answer:
Total amount earned after 25 years=$27,897.16
Step-by-step explanation:
Step 1: Express formula for calculating total amount
The total amount after 25 years can be expressed as;
A=P(1+r)^n
where;
A=total amount after 25 years
P=principal amount
r=annual interest rate
n=number of years
Step 2: Substitute values in the expression
In our case;
P=$6,500
r=6%=6/100=0.06
n=25 years
replacing in the original expression;
A=6,500(1+0.06)^25
A=27,897.16
Total amount earned after 25 years=$27,897.16
Final answer:
The total amount after 25 years will be $27,897.16, and the amount of interest earned on a $6,500 investment at a 6% annual interest rate will be $21,397.16.
Explanation:
To calculate the total amount and interest earned on $6,500 at 6% for 25 years, we'll assume that the interest is compounded annually. The formula to calculate the total amount with compound interest is:
A = P(1 + r/n)^(nt)
Where:
A is the amount of money accumulated after n years, including interest.P is the principal amount (the initial amount of money).r is the annual interest rate (in decimal).n is the number of times that interest is compounded per year.t is the time the money is invested or borrowed for, in years.Let's plug the values into the formula:
A = $6,500(1 + 0.06/1)^(1*25)
A = $6,500(1 + 0.06)^25
A = $6,500(1.06)^25
A = $6,500 * 4.29187072
A = $27,897.16
The total amount after 25 years will be $27,897.16.
To find the interest earned, subtract the principal from the total amount:
Interest = A - P
Interest = $27,897.16 - $6,500
Interest = $21,397.16
The amount of interest earned will be $21,397.16.