Answer:
Step-by-step explanation:
Givens
pi = 3.14
d = 10 cm
h = 2*d
Formula
The top of the cylinder is a solid circle. So the area of the circle is pi r^2There is both a top and bottom to the circle so the fomula is 2*pi*r^2The surrounding area of the cylinder is the circumference of the circle times the height. The circumference of the circle is 2*pi*r. Then you just multiply by the height.formula = 2*pi * r * hThe combined formula is given below.
SA = 2*pi*r^2 + 2*pi*r * h
Conversions
d = 10 cm
h = 2*10
h = 20 cm
r = d/2
r = 10 / 2
r = 5cm
Solution
SA = 2*pi*r^2 + 2*pi*r * h
SA = 2*3.14*5^2 + 2*3.14*5*20
SA = 157 + 628
SA = 785 cm^2
Answer: The surface area is 785 cm^2
Answer:
the surface area is 250 Pi square centimeters
can someone help me with 23-26?
Answer:
check the explaination :) hope this helped
Step-by-step explanation:
V of large cone = 1107 π m^3
V of small cone = 405 π m^3
Total V = 1512 π m^3
Then, answer Part B. A number cube that has sides numbered 1 through 6 is rolled 180 times. Part A How many times would you expect the result to be an even number greater than 2? Write the answer in the box. times Part B How many times would you expect the result to be a number less than 6? Write the answer in the box. times
Using the binomial distribution, it is found that the expected values are given by:
a) 120.
b) 150.
What is the binomial probability distribution?It is the probability of exactly x successes on n repeated trials, with p probability of a success on each trial.
The expected value of the binomial distribution is:
E(X) = np
In this problem, for both items, we consider that the number cube is rolled 180 times, hence n = 180.
Item a:
4 of the 6 possible values are greater than 2, hence p = 4/6 = 2/3.
The expected value is given by:
E(X) = 180 x 2/3 = 120.
Item b:
5 of the 6 values are less than 6, hence p = 5/6.
The expected value is given by:
E(X) = 180 x 5/6 = 150.
More can be learned about the binomial distribution at https://brainly.com/question/24863377
1. Mrs. Berger is making a circular tablecloth for her table. Her table has a radius of 3 feet. Which measurement is closest to the amount of fabric will Mrs. Berger needs to buy to create the tablecloth if it fits perfectly on the table? A. 28.27 ft2 B. 9.42 ft2 C. 18.85 ft2 D. 113.1 ft?
Answer:
A. 28.27 ft^2
Step-by-step explanation:
You're looking for the area of the circle.
Area of circle = [tex]\pi r^{2}[/tex]
[tex]\pi (3)^{2}[/tex]
= 28.27 ft^2
Please help! Hurry!!
Answer:
D
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
I see you already got other answers but I'm going to offer a more in depth explanation to help with similar questions in the future.
The equation you have here is in the form of y = mx + b
You may have seen this in one of your lessons, maybe refered to as slope, y-intercept form?
We have y = -6x + 640
If we break it down we can see how this is in y = mx + b form.
y is the ounces of water in a water cooler
x is the number of paper cups filled
-6 is our m
and 640 is our b
The question is asking about 640 (our b) so I will talk about that first.
This is the y-intercept, the point where, if we were to graph this (see attachment, green dot on the line), that the line would cross the y-axis. This is the point where x is zero.
In our case this would be the amount of water in the cooler when we have filled zero paper cups with water. Hence the answer being D.
Now I will explain the m value, -6 in this case.
This is the rate of change (or slope).
For this question it is how much water we take out (negative value) per paper cup. In other words, how much water goes into each paper cup, -6 ounces.
Take a look at the second attachment. You can see that I go 6 hops down and 1 hop right (yellow line). This is because we always view our m value as a fraction.
In this case, because we have -6, it appears to not be a fraction but a whole number. Always remember that any whole number is just a fraction over 1. We can rewrite our -6 as -6/1.
Slope is written as rise/run. This means that we rise (vertical, up & down) by our top (numerator) value (in this case go down 6, because the 6 is negative) and run (horizontal, left & right) by our bottom (denominator) value (in this case go right 1, because the 1 is positive).
***Remember: positive rise, go up; negative rise, go down. Positive run go up; negative run go down.
Hope this will help you in the future!
Point A is located at (-2, 4). After it is transformed, point A' is located at (2, 4). What could the transformation be?
A. reflection in the y-axis
B. A translation 4 units to the right
C. A rotation of 90° around the origin
D. A transiation 4 units up
3n + 2 = 8 find answer for n
Answer:
[tex]\boxed{\sf{n=2}}[/tex]Step-by-step explanation:
To solve for n, isolate it on one side of the equation.
3n+2=8First, you have to subtract by 2 from both sides.
[tex]\Longrightarrow: \sf{3n+2-2=8-2}[/tex]
Solve.
Subtract the numbers from left to right.
[tex]\sf{8-2=6}[/tex]
Rewrite the problem.
⇒ 3n=6
Divide by 3 from both sides.
→ 3n/3=6/3
Solve.
Divide the numbers from left to right.
→ 6/3=2
[tex]\Longrightarrow: \boxed{\sf{n=2}}[/tex]
Therefore, the correct answer is n=2.I hope this helps! Let me know if you have any questions.
Answer:
n = 2 or.... n is 2
Step-by-step explanation:
When simplifying to find n, we do something to one side, but it also must be done to the other side. First, to get n alone, we would subtract 2. When doing this, we do it for both sides:
3n + 2 = 8
-2 -2
3n = 6
Now, we divide n by 3 becuase right now it says 3 times n. We again do the same for both sides:
3n = 6
/3 /3
n = 2
So the answer is n = 2
n is 2.
Need Help asap,No links
PLS HELP ME ILL GIVE YOU BRAINIEST!!
Use a ratio box to solve this problem. The ratio of red apples to green
apples in the basket was 5 to 2. If there were 70 apples in the basket,
how many of them were red?
The number of apples that are red is 50
Calculating ratioFrom the question, we are to determine the number of apples that are red
From the given information,
The ratio of red apples to green apples is 5:2
∴ Sum of ratio = 5+2 = 7
and
Total number of apples in the basket = 70 apples
Then, the number of apples that are red is
[tex]\frac{5}{7} \times 70[/tex] apples
= 5 × 10
= 50 apples
Hence, the number of apples that are red is 50
Learn more on Caluculating ratios here: https://brainly.com/question/9477681
three friends Luke nick and serena are kicking a soccer ball to each other on the beach Luke kicks the ball to Serena who kicks the ball to nick, who kicks the ball back to Luke. the friends location on the beach are drawn on a coordinate plane as shown where the x values and y represent distance in feet.
WHAT IS THE APPROXIMATE DISTANCE THE BALL TRAVELS AFTER MAKING A FULL ROTATION AROUND THE TRIANGLE OF FRIENDS?
A. 288 feet
B.57.94 feet
C. 144 feet
D. 67.91 feet
The approximate distance the ball travels after making a full rotation around the triangle of friends is approximately 56.25 feet.
The closest option to this value is option B: 57.94 feet.
To find the approximate distance the ball travels after making a full rotation around the triangle of friends, we need to calculate the sum of the distances between each pair of friends.
Distance between Luke and Serena:
√[(4 - 4)² + (9 - (-14))²]
= √(0 + 23²)
= √529
= 23 feet
Distance between Serena and Nick:
√[(4 - (-8))² + ((-14) - (-2))²]
= √(12² + (-12)²)
= √(144 + 144)
= √288
= 16.97 feet (approx.)
Distance between Nick and Luke:
√[((-8) - 4)² + ((-2) - 9)²]
= √((-12)² + (-11)²)
= √(144 + 121)
= √265
= 16.28 feet (approx.)
Now, to get the approximate total distance traveled, we add the distances together:
Total distance ≈ 23 + 16.97 + 16.28
= 56.25 feet
The approximate distance the ball travels after making a full rotation around the triangle of friends is approximately 56.25 feet.
The closest option to this value is option B: 57.94 feet.
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The points were scored on a math quiz 19 25 21 22 20 26 26 17 Find the Mode______ I got No Idea on this one So can i get some help with it please?
26
Step-by-step explanation:
Mode is a number or data in a set of data values with the highest frequency( the amount of times it appears)
Since 26 appears twice while others appear once, 26 is the mode
The remaining mass of radioactive iodine-131 is given by the formula M = Mo(2) 4/8 where M is the remaining mass in grams, Mo is the initial mass in grams, and t is the time in days. How many days does it take for the 726 grams to be reduced to half?
Answer:
the remNING MAS IS 345
Step-by-step explanation:
I DID THIS BEFORE
Find the values of both x and y
Answer:
Step-by-step explanation:
c
A car dealer pays $10,200 for a car. The Dealer has a goal of making
25% on the sale of the car. For how much should the dealer sell the
car?
Kinsley is refinishing her wooden deck. She completed 10 square yards over the weekend,
and during the week she will refinish square yards per day.
Write an equation that shows how the total number of square yards refinished, y, depends on
the number of weekdays Kinsley works, X.
The linear equation that shows the total number of square yards refinished after x weekdays is given by:
y = 10 + 8x.
What is a linear function?A linear function is modeled by:
y = mx + b
In which:
m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.In this problem:
10 square yards have already been completed over the weekend, hence the y-intercept is of b = 10.Researching the problem on the internet, it is found that for each day, 8 square yards are completed, hence the slope is of m = 8.Thus, the equation is given by:
y = 10 + 8x.
More can be learned about linear equations at https://brainly.com/question/24808124
4.
Neville saw this car for sale.
He got a discount of 25% off the price of the car.
He paid £7200 for the car.
Work out the price of the car before the discount.
The Answer (maybe) :
Hello! good morning or night where ever you are.
I'm here to help with your question :)
I believe the answer is 9600
Step-by-step explanation:
[tex]75/100[/tex] [tex]x =[/tex] [tex]7200[/tex]
[tex]0.75[/tex] [tex]x = 7200[/tex]
[tex]x =[/tex] [tex]7200/0.75[/tex]
[tex]x =[/tex] [tex]9600.[/tex]
The previous price before the discount = 9600 pounds.
Checking:
[tex]25%[/tex]% [tex]of[/tex] [tex]9600[/tex]: [tex]2400[/tex]
[tex]9600 -[/tex][tex]2400=7200[/tex]
Answer/ Writer's note: I'm truly sorry if this incorrect :(
Signed - [tex]Lilo[/tex]
What is the name of the relationship between 1 and 4?
Answer:
ALTERNATE INTERIOR ANGLES is the answer
Answer: the answer is the last one . Alternate interor angles
How many combinations with repetition are allowed if n = 4 and r = 3
a. 20
b. 10
c. 27
d. 9
The number of combinations with repetition that are allowed if n = 4 and r = 3 is given by: Option A: 20
How many k-element combinations of n objects, with repetition can be formed?The number of k-element combinations of n objects, with repetition is:
[tex]\overline{C}_{n,k} = \: ^{n + k-1}C_{k} = \dfrac{(n+k-1)!}{k! \times (n-1)!}[/tex]
For this case, we're given that:
n = 4k = 3 (the question uses the notation 'r' instead of 'k')Thus, we get:
[tex]\overline{C}_{n,k} = \dfrac{(n+k-1)!}{k! \times (n-1)!} = \dfrac{(4+3-1)!}{3! \times (4-1)!} \\\\\overline{C}_{n,k} = \dfrac{6!}{3!. 3!} = 20[/tex]
Thus, the number of combinations with repetition that are allowed if n = 4 and r = 3 is given by: Option A: 20
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How do you factor (2x^2+2)
Answer:
You factor that equation by seeing if you can take out anything. Example.
20 is the same as 2 times 2 times 5. Visualized, it is 2(10) or 4(5).
For this, you can take out the "2"
So it would be
2(x^2+1)
x^2+1 can't be factored so that is the final answer
Choosing a Formula
Which formula can be used to find the volume of the
cylinder? Check all that apply.
DA=(d)(h)
O V=B(h)
Ov=(lwXh)
D V=2(r)(h)
D1-Cr0Xh)
Answer:D V=2(r)(h)
Step-by-step explanation:
because al the other answers are incorrect
Lisa is currently taking physics as one of her electives in school. her grade at the end of the year is determined by the average of four exams, each worth 100 points. on her first test she got an 84, on her second she got a 92, and on her third an 80. what must she score on her fourth exam to get exactly 80% in the course? a. 60 b. 64 c. 84 d. 85 please select the best answer from the choices provided a b c d
The score which Lisa should get in her fourth exam of school to get exactly 80% in the course is 64.
What is the average of a group of numbers?The average of the group of numbers is the ratio of the sum of all the numbers of the group to the total number of the group.
Lisa is currently taking physics as one of her electives in school.
Her grade at the end of the year is determined by the average of four exams, each worth 100 points.
On her first test, she got an 84, On her second, she got a 92, On her third, an 80.She got exactly 80% in the course. Let she scores x marks in her fourth exam. Thus,
[tex]\dfrac{84+92+80+x}{4}=80\\256+x=80\times4\\x=320-256\\x=64[/tex]
Hence, the score which Lisa should get in her fourth exam of school to get exactly 80% in the course is 64.
Learn more about the average here;
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Can someone help me with this problem?
Answer:
9(3+5)
Step-by-step explanation:
GCF is 9, because thats the highest common number that both numbers can be divided by.
27/9 = 3
45/9 = 5
so,
9(3+5)
How much paper is needed to cover the rectangular prism shown below?
A. 92 in2
B. 120 in2
C. 184 in2
D. 494 in2
Answer:
Its c!
Step-by-step explanation:
Answer:
Step-by-step explanation:
c
If 6 pounds of grass seed cover 399 square feet, how many pounds are needed for 6384 square feet?
Answer:
im not 100% sure but i think its 24lbs of grass seed
Step-by-step explanation:
6 devided by 399 squared=0.0000376882
0.0000376882 x 6384=0.24060150375
0.24060150375 x 100=
24 lbs to cover a area of 6384 square feet
Find f(2) if f(x) = 3x3 - 12x2
ANSWER CHOICES IN PICTURE
please show how you got answer:)
i will give brainliest!
Please help me out it'd be apprieciated
Answer:
d
Step-by-step explanation:
I got it right on the test
What is the probability, to the nearest hundredth, that a point chosen randomly inside the rectangle is in the circle?
Answer:
Answer D (.22)
Step-by-step explanation:
If Brainly would stop deleting my answer, your answer is D (.22).
what does x equal to?
5(x - 4) + 12 = 17
Answer:
x is 5
Step-by-step explanation:
First of all, expand the bracketsThis gives [tex]5x-20+12=17[/tex]Add 20 to both sides[tex]5x+12=37[/tex]Subtract 12 from both sides[tex]5x=25[/tex]Divide both sides by 5[tex]x=5[/tex]Answer:
x = 5Step-by-step explanation:
In the question we're given with an equation that is 5(x - 4) + 12 = 17 and we are asked to find the value of x .
Solution : -
[tex] \longmapsto \: 5(x - 4) + 12 = 17[/tex]
Step 1 : Solving parenthesis :
[tex] \longmapsto \:5x - 20 + 12 = 17[/tex]
Step 2 : Adding 20 on both sides :
[tex] \longmapsto \:5x - \cancel{20 }+ 12 + \cancel{20 }= 17 + 20[/tex]
[tex] \longmapsto \:5x + 12 = 37[/tex]
Step 3 : Subtracting 12 from both sides :
[tex] \ \longmapsto \: \:5x + \cancel{ 12} - \cancel{12} = 37 - 12[/tex]
[tex] \longmapsto \:5x = 25[/tex]
Step 3 : Dividing by 5 on both sides :
[tex] \longmapsto \: \frac{ \cancel{5}x}{ \cancel{5} } = \cancel\frac{25}{5} [/tex]
[tex] \longmapsto \: \red{ \boxed{\bold{x = 5}}}[/tex]
Therefore , value of x is 5Verifying :
We are verifying our answer by substituting value of x in Given Equation :
5(x - 4) + 12 = 175 ( 5 - 4 ) + 12 = 175 ( 1 ) + 12 = 175 + 12 = 1717 = 17L.H.S = R.HS.Hence, Verified.Therefore , our value for x is correct .
#Keep Learningneed help with question 16
I'm not sure what the answer is but read some books and study also I believe relaxing music helps with homework struggles
If the area of the green triangle is 10.5 cm?, what is the area of the parallelogram?
Will mark brainlyest!!
Answer:
The answer is 21
Step-by-step explanation:
The parallelogram is divided into two congruent traigle so the area of green traigle is equal to area of blue traigle the sum of area of both these traigle is the area of parallelogram
So
2*10.5=21
PLEASE MARK ME BRAINLIEST IF MY ANSWER IS CORRECTPLEASE