What is the volume of a sphere with a radius, r = 0.5?
Use 3.14 for a and be sure you round your answer to two decimals.
TO
Answers
Answer:
V = 0.52 cm³
Step-by-step explanation:
radius r = 0.5 cm
volume V = 0.523333333 cm³
surface area A = 3.14 cm²
circumference C = 3.14 cm
In Terms of Pi π
volume V = 0.166666667 π cm³
surface area A = 1 π cm2
circumference C = 1 π cm
Agenda: r = radius
V = volume
A = surface area
C = circumference
π = pi = 3.1415926535898
Formulas:
Sphere Formulas in terms of radius r:
Volume of a sphere:
V = (4/3)πr³
Circumference of a sphere:
C = 2πr
Surface area of a sphere:
A = 4πr²
Related Questions
Value x=3 y=16 find the value of this expression 4(×2-5)-2÷y=
Answers
Answer:
-4
Step-by-step explanation:
Solving the equation we get -4.
The amount of chlorine in a swimming pool is proportional to the volume of water. The pool has 2.5 milligrams of chlorine per liter of water. How much chlorine is in the pool?
Answers
Answer:
utyਟਿਵ੍ਗਕ੍ਵਫਕ੍ਤੁਦ੍ਯੇਦਿਹਜ੍ਜੁਤ੍ਯੈਫ੍
Step-by-step explanation:
utyਟਿਵ੍ਗਕ੍ਵਫਕ੍ਤੁਦ੍ਯੇਦਿਹਜ੍ਜੁਤ੍ਯੈਫ੍ਰ gh ਗ੍ਯੁਯਜ੍ਕ੍ਜਗ੍
Use the best-fit line below to predict the value of y when x = 7
Answers
Answer:
the answer is 6 because when x=7 on the line it is also equal to 6 on the y axis
Chart and Graph Questions (image inserted)
Answers
X is the horizontal line and y is the vertical one- so (1,3) you would move one horizontally (right) and 3 vertically (up)
Answer:
X is the horizontal line and y is the vertical one- so (1,3) you would move one horizontally (right) and 3 vertically (up)
16 points dont steal points
Also the answers inside the choose is: A. 2 times B. 4 times C. 21 more than D. 105 more than
Answers
Answer:
B
Step-by-step explanation:
7x4 = 28
just do 4 times everything to double check
P.S. Can I get brainliest
EDIT: Nvm I don’t need brainliest I was happy too help :)
Help its sphere volume
Answers
Alice has eight good behavior stars and earns a new one each week. Mack has two good behavior stars and earns two new ones each week. In how many weeks will they have the same number of good behavior stars?
Answers
Answer:
7 weeks
Step-by-step explanation:
Week 1 A - 8 M - 2
Week 2 A - 9 M - 4
Week 3 A - 10 M - 6
Week 4 A - 11 M - 8
Week 5 A - 12 M - 10
Week 6 A - 13 M - 12
Week 7 A - 14 M - 14
Answer:
7 weeks
Step-by-step explanation:
i am not for sure though. hope it helps anyway:)
A chemist prepares two acid solutions.
Solution 1
3 parts sulfuric acid to 7 parts water
Solution 2
4 parts sulfuric acid to 9 parts water
a. Use a ratio table to determine which solution is more acidic.
Solution 1 Solution 2
Water Sulfuric Acid
Water
Sulfuric Acid
7
9
21
18
42
45
63
63
Question 2
Solution
has the greater concentration.
Question 3
b. Use a graph to determine which solution is more acidic.
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
Both graphs begin at $($ Response area, Response area $)$ . The graph for solution Response area is steeper, so it has Response area concentration of acid.
Answers
Answer:
Check Description for answer
Step-by-step explanation
do it urself
Answer:
A) solution 2 is more acidic than solution 1
Step-by-step explanation:
A chemist prepares two acid solutions:
Solution 1: 3 parts sulfuric acid to 7 parts water
Ratio of sulphur to water: 3/7 (3:7)
Solution 2: 4 parts sulfuric acid to 9 parts water
Ratio of sulphur to water: 4/9 (4:9)
___________________________________________________
Part A: (using ratios to determine which solution is more acidic)
First we make same denominator, since the denominators are 9 and 7, we have to find the lcm (lowest common multiple) they both have with is 63. To do that, we must multiply the denominators with either 7 or 9.
Solution 1: Numerator (3) multiplied by 9 and then denominator (7) multiplied by 9. This makes out fraction/ratio 27/63
Solution 2: Numerator (4) multiplied by 7 and then denominator (9) multiplied by 7. This makes out fraction/ratio 28/63
Since 28/63 (or just 28) is a larger quantity than 27/63 (or just 27) this means solution 2 is more acidic than solution 1.
Mathematical Line (Not sure what you would call this lol): 28 > 27
Part B: (Let 'y' amount of sulfuric acid mix with 'x' amount of water)
Equation of solution 1: y = 3/7x
Equation of solution 2: y = 4/9x
Please find attachment for graph.
Part C: Don't have a graph, sorry! (part a. method is more preferred to find more acidic because it gives the actual acidic amount.)
Louise measured the perimeter of her rectangular scrapbook to be 148 cm. If the scrapbook is 38 cm wide, how long is the scrapbook?
Answers
Answer:
36cm
Step-by-step explanation:
38 × 2 = 76
148 - 86 = 72
72/2 = 36
15 point reward + brainliest for the CORRECT answer
Answers
Answer:
3/4
Step-by-step explanation:
1/4 + 1/2 = 0.75 which is 3/4
please help me i will give brainliest to first person to anwser.
Answers
First we start with the formula for cylinders v=(pi)r(squared)h filled in Thats v=(3.14)(8 squared) (8) which brings us to the answer 1607.68 but you must round to the nearest tenth aka 1607.7
Answer:
The first option, V ≈ 1607.7 in²
Step-by-step explanation:
Find the volume of the given cylinder.
\(\begin{center}\framebox{\parbox{4cm}{\textbf{Volume of a Cylinder:}\\[2ex]The volume of a cylinder with radius $r$ and height $h$ is given by the formula:\\[2ex]\center{$V = \pi r^2 h$} \\ \\}}\end{center}\)
Given:
r = 8 in
h = 8 in
π = 3.14
Find:
V = ?? in³
\(\hrulefill\)
Now solving,
Substitute the given values into the formula:
=> V = (3.14)(8)²(8)
Using a calculator to simplify:
=> V = 1607.68 in²
Rounded to the nearest tenth:
∴ V ≈ 1607.7 in²
Thus, the first option is correct.
Help ASAP!! Answer must be in radicals and in terms of pi.
Answers
Answer:
158. surface area = 108π
volume = 216√3π
159. surface area = 4√97π+16π
volume = 144π
List all the numbers you can for (?) in the fraction ?/10. Each choice must be less then ten, and the fraction formed must be in simplest form [For the ones who can't read what it says.]
Answers
Answer:
1, 2, 3, 4, 5, 6, 7, 8, and 9.
Step-by-step explanation:
Here is the graph for one equation in a system of equations:
Match the correct equation to the scenario.
Write a second equation for the system so it has infinitely many solutions.
a) y=-3/4x+4
b) y=-3/4x+2
c) y=-3/4x+1
Write a second equation whose graph goes through (0, 1) so the system has no solutions.
a) y=-3/4x+4
b) y=-3/4x+2
c) y=-3/4x+1
Write a second equation whose graph goes through (0, 2) so the system has one solution at (4, 1).
a) y=-3/4x+4
b) y=-3/4x+2
c) y=-3/4x+1
Answers
Answer:
Step-by-step explanation:
1. y = -3/4 +4 cause that is the same line as the equation and since they are the same line it would mean there would be infinitely many solutions.
2. y=-3/4x+2 if you graph this line next to the orginal line it runs through (0,1) and you can see that its paralellel and will never meet the other line so there will be no solutions
3. for this question im confused because none of the answers fits the line that the question is asking for the closest would be y= -3/4x+2 since it runs through (0,2) but other than that none of the answers fit the line its describing.
an equation that would work though would be y=-1/4x+2
Please help me with number 9
Answers
well, it was truly 12.5 mL, however she said 13 mL, well, she was off by 13 - 12.5 = 0.5 mL.
Now, if we take 12.5(origin amount) to be the 100%, what is 0.5 off of it in percentage?
\(\begin{array}{ccll} Amount&\%\\ \cline{1-2} 12.5 & 100\\ 0.5& x \end{array} \implies \cfrac{12.5}{0.5}~~=~~\cfrac{100}{x} \implies 12.5x=50 \\\\\\ x=\cfrac{50}{12.5}\implies x=\stackrel{\%}{4}\)
For this problem, it is asking for a percentage error, which is basically how far off the student was from the true value. (But in percentages)
First, we need to find how far off the student was in millimeters, which is calculated by finding the difference between the guess and the true value:
13-12.5=0.5
So the student was 0.5 millimeters off of the total, from here, we can use this number to find our answer.
Percentages also have regular number counterparts. For example, 1 is 100%, because you have one whole thing. 0.5 is 50% because 0.5 is half of a whole number. .33 is 33% etc.
To calculate how far the guess was from the actual amount, we divide the difference (0.5) by the true value (12.5)
0.5/12.5=0.04
0.04 converted to a percentage is 4%. (You move the decimal two places to the left, or multiply by 100)
This works because you can calculate how much a value takes up of the total by dividing. For example, to find out how much 1 takes up of 4, you would calculate 1/4, which equals .25, or 25%, and we know this is true.
I hope this helps!
help me pls, thanks ^^
Answers
Answer:
As the time increases, the distance from the floor decreases by 40 cm per second. You find 40 by taking (6,1140) and (9,1020). The slope formula is y2 - y1 over x2- x1. Plug in the variables and you get (1020-1140)/(9-6)= -120/3= -40.
Step-by-step explanation:
Prove that your recipe makes exactly 10 cups.
• Explain the most efficient method for measuring each ingredient using only
the following two measuring cups:
1/3
cup and
1/4
cup. You can use one or
both of the measuring cups
Answers
Answer:
Use both measuring cups 16 times and then use the \(\frac{1}{3}\) cup to measure twice for exactly 10 cups.
Step-by-step explanation:
When working with fractions, I like to make the denominators the same first.
\(\frac{1}{3}\) cup = \(\frac{4}{12}\) cup
\(\frac{1}{4}\) cup = \(\frac{3}{12}\) cup
10 cups = \(\frac{120}{12}\) cups
Now, for the most efficient method, it would be reasonable to use both cups so that it is quicker.
1 scoop using both cups: \(\frac{4}{12}\) + \(\frac{3}{12}\) = \(\frac{7}{12}\) cup in total
No. of scoops using both cups: \(\frac{120}{12}\) ÷ \(\frac{7}{12}\) = 16 R \(\frac{8}{12}\)
You know that using both cups, you can scoop 16 times with a remainder of \(\frac{8}{12}\). You cannot scoop \(\frac{8}{12}\) using both cups without the remaining \(\frac{1}{12}\) left to scoop, so you have to use only one cup to scoop. The bigger cup is the \(\frac{4}{12}\) cup, so I will use that one to scoop the remaining \(\frac{8}{12}\).
No. of scoops using the \(\frac{4}{12}\) cup: \(\frac{8}{12}\) ÷ \(\frac{4}{12}\) = 2
Overall, you will use both cups together for 16 times, then use the \(\frac{1}{3}\) cup twice.
The line plot below gives the number of cups of flour used in different recipes.
AlternativeText
What is the difference between the greatest number of cups of flour used and the least number?
A. 2 cups
B. 214 cups
C. 312 cups
D. 334 cups
Answers
Answer:
332
Step-by-step explanation:
The greatest amount is 334
the least amount is 2
334-2=332 cups
Have a GREAT day!!
need fast
Write the inequality for the statement:
the difference between a number and three fifths is a minimum of negative four sevenths
f minus 3 over 5 is greater than or equal to 4 over 7
f minus 3 over 5 is greater than or equal to negative 4 over 7
f plus 3 over 5 is greater than negative 4 over 7
f minus 3 over 5 is less than or equal to negative 4 over 7
Answers
Answer:
Your answer is B
Step-by-step explanation:
it is B
I hope you have a great day
math question please help me
Answers
Answer:
C
Step-by-step explanation:
There are 140 women in the 5% sample. to find an estimate of all the women we can multiply but by 20. 5% x 20 = 100%. 140 x 20 = 2,800.
Someone help me with this ASAP!
Answers
Answer:
48.1 somewhere around 36 and 57
Step-by-step explanation:
Answer:
36-57
Step-by-step explanation:
18.50 x 2.6 = 48.10, which is between those two numbers
PLEASE HELP ME :DDDDDDDDDDDDDD
Answers
Answer:
Step-by-step explanation:
To find the area of a rectangle, you multiply the length by the height.
First, we need to convert the mixed numbers to improper fractions:
Length: 6 3/4 ft = (6 x 4 + 3) / 4 ft = 27 / 4 ft
Height: 2 2/12 ft = (2 x 12 + 2) / 12 ft = 26 / 12 ft = 13 / 6 ft
Now we can calculate the area:
Area = Length x Height
Area = (27 / 4) ft x (13 / 6) ft
Area = 351 / 24 ft^2
Area = 14 11/24 ft^2
Therefore, the area of the rectangle is 14 11/24 square feet.
A local animal rescue has 20 people that help foster pets while they are
waiting on finding their homes. They expect to gain two additional people
willing to foster animals each month. The amount of animals in need of
homes in the community is currently 10 and growing at a rate of 15% per
month. When will the amount of homeless pets surpass the amount of foster
homes available?
A) Write the two functions that represent this situation.
B) Create a table of values for x=0 to x=13.
C) Approximate the solution(s). Why is this the approximate solution?
D) Using graph paper (and the table of values), sketch the situation to
show the exact solution.
Answers
Answer:
A) Let f(x) represent the number of foster homes available after x months, and let g(x) represent the number of homeless pets after x months.
f(x) = 20 + 2x (since 2 additional people are expected to foster each month)
g(x) = 10(1.15)^x (since the number of homeless pets is growing at a rate of 15% per month)
43.
Referring to the figure, out of 2500 people, how many would you
expect check email daily?
a. 575 people c. 190 people
b. 1900 people d. 25 people
Answers
Answer:
B.) 1900 people
76% of 2500 is 1900
23% of 2500 is 575
1% of 2500 is 25
Have a nice day!
You would expect 1900 people to check email daily. The correct answer is b.
What is a percentage?A ratio or value that may be stated as a fraction of 100 is called a percentage. And it is represented by the symbol '%'.
Given;
Number of people = 2500
And from the chart,
76% of people check email daily.
To find the number of people:
use percentage formula,
number of people = 76% of 2500
Number of people = 76 x 2500 / 100
Number of people = 1900
Therefore, 1900 people check email daily.
To learn more about the percentage;
https://brainly.com/question/24159063
#SPJ2
Which scenario can be modeled by the linear function
y = -15x + 500?
A. The temperature on Jupiter is
15℉ and increases by 500℉ every day.
B. There is a population of 500 giraffes in Western Africa that decreases by 15 giraffes each year.
C. A carpet cleaning service charges $500 plus an additional $15 for every hour.
D. A membership fee for a movie streaming service is free, but each rental costs $15.
Answers
What is the answer?I am very confused just cant find the answer can you help me?
Answers
Answer:
The answer is 4 1/3
Step-by-step explanation:
If you have any questions ask me please!
4 1/3 laps total equaling 3 miles
pls mark as brainliest hope this helps you
please help urgent asap
Answers
HELP HELP PLEASE THIS IS DUE TONIGHT
GIVING BRAINLIEST
JUST GIVE THE ANSWER
NO WORK
PLEASE HELP
TRY YOUR BEST
TYVM
Answers
Answer:
slope: (positive) 2
y-intercept: -4
Step-by-step explanation:
slope is rise over run, rise is 2 up every 1 over, so slope is (2-0)/1
y-intercept is where the function intercepts or crosses the y-axis, that is at -4
Answer:
Slope = 2/1
Y-intercept = -4
Equation: y= 2/1 -4
Step-by-step explanation:
The y intercept is where the line passes through y (the vertical line).
For slope, I like to think rise-over-run. You can count up (y) and across (x) for untill it intercepts.
Slope Equation:
(y2-y1)/(x2-x1)
(-4-2)/(0-3)
(-6)/(-3) --> negatives cancel eachother out.
2/1
A teacher was interested in the cafeteria food that students preferred in a particular school. She gathered data from a random sample of 200 students in the school and wanted to create an appropriate graphical representation for the data.
Which graphical representation would be best for her data?
Stem-and-leaf plot
Line plot
Histogram
Box plot
Answers
Answer:
histogram would seeming be the best one please let me know if I got it wrong though
Answer:
Histogram
Step-by-step explanation:
A histogram is a bar graph that shows the frequency DATA values in the INTERVALS.
Use the substitution method to solve the system of equations. choose the correct ordered pair.
Answers
Answer:
D
Step-by-step explanation:
A. 2(2) - (-2)= 4+2=6
B. 2(2) - (-1) = 4+1=5
C. 2(7) - (4) = 14 - 4= 10
2(7) - 2(4) = 14 - 8 = 6 doesn't = 4
D. 2(8) - (6) = 16 - 6= 10
2(8) - 2(6) = 16 - 12 = 4 = 4