A ball bearing is shaped like a sphere and has a diameter of 2.5 cm. What is the volume contained inside the ball bearing? Use 3.14 for pi. Round your answer to the nearest hundredth.
8.18 cm3
7.15 cm3
7.08 cm3
6.89 cm3
Answer:
The correct answer is 8.18 cm ^3
Step-by-step explanation:
Formula:
4/3 x pi (3.14) x 1.25 ^3
Pi equals 3.14 and you have to divide 2.5 by 2 because you have to use the radius^3. The other person who answered the question was wrong, so please dont use their answer to help you. Hope this helps you. :)
The volume contained inside the ball bearing is 8.18 cm³
Volume of a sphere:The ball bearing is shaped like a sphere. Therefore, the volume contained inside the ball bearing is the volume of a sphere.
v = 4 / 3 πr³where
r = radius
Therefore,
diameter = 2(radius)
Therefore,
radius = diameter / 2
r = 2.5 / 2 = 1.25 cm
π = 3.14
v = 4 / 3 × 3.14 × 1.25³
v = 24.53125 / 3
v = 8.17708333333
v = 8.18 cm³
learn more on sphere here: https://brainly.com/question/6762050
what is the simplified form of x+7/x+3 + x-4/3
Answer:
[tex]x*(x+2)[/tex]
Step-by-step explanation:
The expression is as follows:
[tex](x+7)/(x+3)+(x-4)/3[/tex]
To simplify we need to get rid of the denominators for each expression. We can see that the denominators are (x+3) and 3. We therefore mutliply the expression with 3(x+3):
[tex]3*(x+7)+(x-4)*(x+3)= 3*x+21+x^2-x-21[/tex]
Simplify the expression
[tex]x^2+2*x=x*(x+2)[/tex]
Write an equation that has a hole at x = 4 and a vertical asymptote at x = -3.
Write 7x-2-7x+6 in simplest form.
A phone company offers two monthly plans. Plan A costs $16
plus an additional $0.10
for each minute of calls. Plan B has no initial fee but costs $0.14
for each minute of calls.
For what amount of calling do the two plans cost the same?
What is the cost when the two plans cost the same?
Final answer:
The two phone plans cost the same when the user uses 400 minutes. At that point, both Plan A and Plan B will cost $56.
Explanation:
To determine for what amount of calling the two plans cost the same, set up an equation where the cost of Plan A equals the cost of Plan B. For Plan A, the cost is $16 plus $0.10 per minute of calls, and for Plan B, the cost is $0.14 per minute of calls. So, we can write the equation as:
16 + 0.10m = 0.14m
where m represents the number of minutes. Solve for m to find when the two plans are equal in cost:
0.14m - 0.10m = 16
0.04m = 16
m = 16 / 0.04
m = 400
Therefore, the two plans cost the same when the user uses 400 minutes. Now, let's calculate the cost of each plan at 400 minutes:
For Plan A: 16 + (0.10 × 400) = 16 + 40 = $56
For Plan B: 0.14 × 400 = $56
The cost when the two plans cost the same is $56.
Final answer:
The two phone plans cost the same when 400 minutes of calls are used. At that point, the cost for each plan is $56.
Explanation:
To determine when the two plans offered by the phone company cost the same, we need to set up an equation where the two costs are equal. For Plan A, the cost is $16 plus $0.10 per minute. For Plan B, there is no initial fee but it costs $0.14 per minute. We can set up the equation like this:
Plan A: Cost = $16 + $0.10 × (number of minutes)
Plan B: Cost = $0.14 × (number of minutes)
To find out when they cost the same, we set these equal to each other:
$16 + $0.10m = $0.14m
Where m is the number of minutes. Solving for m gives us:
$16 = $0.14m - $0.10m
$16 = $0.04m
m = $16 / $0.04
m = 400 minutes
At 400 minutes, both plans cost the same. Now to find the cost when they are the same:
Cost = $16 + ($0.10 × 400)
Cost = $16 + $40
Cost = $56
Therefore, the two plans cost the same at 400 minutes and the cost at that point is $56.
Is it correct to say that a cube with side lengths 6cm have the same volume and surface area?
is this answer right
When dividing with polynomials, the goal is to determine how many times the dividend divides evenly into the?
Which of the following words does not indicate multiplication? A. times B. of C. product D. more than
Find the three arithmetic means in this sequence. 12 __ __ __ 40
Line K is parallel to line L
What angle is congruent to angle 4.
Answer:
Its A, I took the test..
If your front lawn is 24.0 feet wide and 20.0 feet long, and each square foot of lawn accumulates 1050 new snow flakes every minute, how much snow (in kilograms) accumulates on your lawn per hour? assume an average snow flake has a mass of 1.70 mg.
The bear population increases at a rated of 2% each year. There are 1573 bears this year. What is the growth factor, b?
To find the growth factor, b, we can use the formula for exponential growth: n = ln(M)/ln(b), where n is the number of years, M is the final population, and b is the growth factor.
Explanation:To find the growth factor, b, we can use the formula for exponential growth: n = ln(M)/ln(b), where n is the number of years, M is the final population, and b is the growth factor. In this case, the final population is 1573 bears. Let's solve for b: n = ln(1573)/ln(b). To isolate b, we can take the exponential of both sides: b^n = 1573. Now we can solve for b by taking the nth root of 1573. The growth factor, b, is the value that, when raised to the power of the number of years, gives us the final population of bears.
A car travels 2/5 mile in 1/2 minute. what is the cars speed in miles per hour?
The speed of the car is 48 miles per hour, based on the given information that the car travels 2/5 miles in 1/2 minute.
Explanation:To solve this problem, we first need to recognize that the car has traveled 2/5 miles in 1/2 minute. To calculate the speed in miles per hour (mph), we need to find how far the car would go in 1 hour. In other words, how many 1/2 minutes are there in an hour? An hour has 60 minutes, so there are 2*60=120 half-minutes in an hour. If the car travels 2/5 mile in each half minute, then in one hour (or 120 half-minutes), the car would travel 2/5*120=48 miles. Consequently, the car's speed is 48 miles per hour.
Learn more about Speed calculation here:https://brainly.com/question/19930939
#SPJ2
A basketball player scored x, y, and z points in 3 games. Express the average number of points scored by the player in terms of x, y, and z.
If a coin is tossed twice what is the probability of getting two heads
an ostrich that is 78 inches tall is 15 inches taller than 3 times the height of a kiwi. What is the height of a kiwi in inches
If you are throwing a dart at the circular target pictured below, and it is equally likely to hit any point on the target, what is the probability that the dart will hit the rectangle?
Use 3.14 for ,and round your answer to the nearest tenth of a percent.
How many license plates are possible using three letters followed by three digits if no letter can be repeated?
A= (4,5) B= (7,-9) what is AB ?
Two functions are shown in the table below. Function 1 2 3 4 5 6 f(x) = −x2 + 4x + 12 g(x) = −x + 6 Complete the table on your own paper, then select the value that is a solution to f(x) = g(x).
For [tex]\fbox{\begin \\\math{x}=6\\\end{minispace}}[/tex] the function [tex]f(x)=-x^{2} +4x+12[/tex] and [tex]g(x)=-x+6[/tex] has same value.
Step by step explanation:
The given functions are,
[tex]f(x)=-x^{2}+4x+12[/tex]
[tex]g(x)=-x+6[/tex]
Step 1:
Substitute [tex]x=1[/tex] in [tex]f(x)=-x^{2} +4x+12[/tex] to obtain the value of [tex]f(1)[/tex].
[tex]f(1)=-1^{2} +4(1)+12\\f(1)=-1+4+12\\f(1)=15[/tex]
Substitute [tex]x=1[/tex] in [tex]g(x)=-x+6[/tex] to obtain the value of [tex]g(1)[/tex] .
[tex]g(1)=-1+6\\g(1)=5[/tex]
Step 2:
Substitute [tex]x=2[/tex] in [tex]f(x)=-x^{2} +4x+12[/tex] to obtain the value of [tex]f(2)[/tex].
[tex]f(2)=-2^{2} +4(2)+12\\f(2)=-4+8+12\\f(2)=16[/tex]
Substitute [tex]x=2[/tex] in [tex]g(x)=-x+6[/tex] to obtain the value of [tex]g(2)[/tex] .
[tex]g(2)=-2+6\\g(2)=4[/tex]
Step 3:
Substitute [tex]x=3[/tex] in [tex]f(x)=-x^{2} +4x+12[/tex] to obtain the value of [tex]f(3)[/tex].
[tex]f(3)=-3^{2} +4(3)+12\\f(3)=-9+12+12\\f(3)=15[/tex]
Substitute [tex]x=3[/tex] in [tex]g(x)=-x+6[/tex] to obtain the value of [tex]g(3)[/tex] .
[tex]g(3)=-3+6\\g(3)=3[/tex]
Step 4:
Substitute [tex]x=4[/tex] in [tex]f(x)=-x^{2} +4x+12[/tex] to obtain the value of [tex]f(4)[/tex].
[tex]f(4)=-4^{2} +4(4)+12\\f(4)=-16+16+12\\f(4)=12[/tex]
Substitute [tex]x=4[/tex] in [tex]g(x)=-x+6[/tex] to obtain the value of [tex]g(4)[/tex] .
[tex]g(4)=-4+6\\g(4)=2[/tex]
Step 5:
Substitute [tex]x=5[/tex] in [tex]f(x)=-x^{2} +4x+12[/tex] to obtain the value of [tex]f(5)[/tex].
[tex]f(5)=-5^{2} +4(5)+12\\f(5)=-25+20+12\\f(5)=7[/tex]
Substitute [tex]x=5[/tex] in [tex]g(x)=-x+6[/tex] to obtain the value of [tex]g(5)[/tex] .
[tex]g(5)=-5+6\\g(5)=1[/tex]
Step 6:
Substitute [tex]x=6[/tex] in [tex]f(x)=-x^{2} +4x+12[/tex] to obtain the value of [tex]f(6)[/tex].
[tex]f(6)=-6^{2} +4(6)+12\\f(6)=-36+24+12\\f(6)=0[/tex]
Substitute [tex]x=6[/tex] in [tex]g(x)=-x+6[/tex] to obtain the value of [tex]g(6)[/tex] .
[tex]g(6)=-6+6\\g(6)=0[/tex]
Step 7:
As per the given condition [tex]f(x)=g(x)[/tex].
(a). Substitute [tex]f(x)=-x^{2} +4x+12[/tex] and [tex]g(x)=-x+6[/tex] in above equation.
[tex]-x^{2} +4x+12=-x+6[/tex]
(b). Multiply with [tex]-1[/tex] on both sides.
[tex]x^{2} -4x-12=x-6[/tex]
(c). Shift the term [tex]x-6[/tex] to left hand side.
[tex]x^{2} -4x-12-x+6=0\\x^{2} -5x-6=0[/tex]
(d). Split the middle term in such a way that its sum is 5 and multiplication is 6.
[tex]x^{2} -(6-1)x-6=0\\x^{2} -6x+x-6=0\\x(x-6)+1(x-6)=0\\(x+1)(x-6)=0\\x=-1 ,6[/tex]
It is observed from the above solution that for [tex]x=6[/tex] both the functions [tex]f(x)[/tex] and [tex]g(x)[/tex] has same value.
Direct method:
[tex]f(x)=g(x)\\\Leftrightarrow-x^{2} +4x+12=-x+6\\\Leftrightarrow-x^{2} +4x+12+x-6=0\\\Leftrightarrow-x^{2} +5x+6=0\\\Leftrightarrow-x^{2} +6x-x+6=0\\\Leftrightarrow x^{2} -6x+x-6=0\\\Leftrightarrow x(x-6)+1(x-6)=0\\\Leftrightarrow(x+1)(x-6)=0\\\Leftrightarrow x=6,-1[/tex]
The table for the function [tex]f(x)=-x^{2} +4x+12[/tex] and [tex]g(x)=-x+6[/tex] is attached below.
Learn more:
1. what is the y-intercept of the quadratic function f(x) = (x – 6)(x – 2)? (0,–6) (0,12) (–8,0) (2,0) https://brainly.com/question/1332667
2. which is the graph of f(x) = (x – 1)(x + 4)? https://brainly.com/question/2334270
Answer details:
Grade: Middle school.
Subjects: Mathematics.
Chapter: Function.
Keywords: Function, Middle term split method, Binomial,Quadratic, Polynomial, Factorized, Perfect square, Zeros, Zeros of a function, Expression, Equation, x, x^2, x^3, -x^2+4x+12, -x+6, roots of equation.
Answer:
The answer would be D.
Step-by-step explanation:
Find all the points, if any, where the graph of 12x-5y=0 intersects (x+12)^2+(y-5)^2=169.
A. There are no points of intersection.
B. (0,0)
C. (4.5, 10.9)
D. (0,0) and (4.5, 10.9)
Answer:
(0,0)
Step-by-step explanation:
If you graph [tex]12x-5y=0[/tex] and [tex](x+12)^2+(y-5)^2=169[/tex] along with the points (0,0) and (4.5, 10,9) you with see that the equations intersect at (0,0)
Complete the solution of the equation. find the value of y when x equals 11 8x+6y=28
6/7 divided by 1 2/5
The answer to 6/7 divided by 1 2/5 is 30/49 after converting 1 2/5 to an improper fraction and using the rule of multiplying by the reciprocal for division with fractions.
Explanation:To solve the problem of 6/7 divided by 1 2/5, you first need to convert 1 2/5 into an improper fraction. This can be done by multiplying the whole number by the fraction's denominator and then adding the numerator, 1*5+2 = 7, so 1 2/5 becomes 7/5.
Next, when dividing by a fraction, you multiply by its reciprocal. The reciprocal of 7/5 is 5/7. Therefore, 6/7 divided by 1 2/5 equals 6/7 multiplied by 5/7.
When multiplying fractions, you multiply the numerators for the new numerator and the denominators for the new denominator, leading to (6*5)/(7*7) = 30/49.
Learn more about Dividing Fractions here:https://brainly.com/question/1627825
#SPJ2
You are planning your week-end schedule. You can spend at most 8 hours paying video games and doing homework. You want to spend less than 2 hours playing video games. You must spend at lest 1.5 hours on homework. Which of the following is the system of equations that would represent this situation? Let v= number of hours spent playing video games and let h = the number of hours spent on homework.
A) None of these
B)v<2
h≥ 1.5
v+ h≤ 8
v≥0
h≥0
C) v<1.5
h≥2
v+h≤ 8
v≥0
h≥0
D) v>1.5
h≤2
v+h≥8
v≥0
h≥0
E) v>2
h≤ 1.5
v+h≥8
v≥0
h≥0
570 people die from smoking related diseases everyday ?
A) how many die form related diseases every hour?
B) how many die form related diseases every week?
C) has many die form related diseases every year?
(570 people/ 1 day)* (1 day/ 24 hours)= 23.75 people/hour.
The rate of people who die from smoking is 23.75 people die per hour.
The rate of people who die from smoking is 3,990 people die per week.
The rate of people who die from smoking is 207,408 people die per year.
Hope this helps and if your feeling generous leave a rate, thanks, and brainliest it would really help me reach expert and I would greatly appreciate ;)
Use calculus to find the largest possible area for a rectangular field that can be enclosed with a fence that is 400 meters long.
the largest rectangular area is actually a square.
so the side would be 400/4 = 100 feet
area of a square is S^2
100^2 = 10,000 square feet
Maximum area is 5625m² when the dimensions are 75m × 75m.
To maximize the area of the rectangular field enclosed by a 300-meter-long fence, let's denote the length of one side as x meters and the other side as y meters.
Since the fence length is 300 meters, the perimeter of the rectangle is 2x + 2y = 300, or x + y = 150.
We want to maximize the area, which is given by A = xy.
To find the maximum, we'll use the constraint equation to express one variable in terms of the other, then substitute into the area formula.
1. From the constraint equation, x = 150 - y.
2. Substitute x into the area formula: A = (150 - y)y.
3. Take the derivative of A with respect to y and set it to zero to find the critical points.
4. Solve for y to find the value that maximizes A.
5. Use this value of y to find the corresponding x.
6. Calculate the maximum area using A = xy.
A rope 18 feet long is cut into two pieces. one piece is used to form a circle and the other used to form a square. find a function representing the area of both square and circle as a function of the length of one side of the square.
simplify the expression and enter your answer below (19^1/9) ^9
The simplified expression is 19.
What is expression?An expression is a sentence with a minimum of two numbers or variables and at least one math operation.
An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division. The terms involved in an expression in math are:
some terms are:
Constant: A constant is a fixed numerical value.Variable: A variable is a symbol that doesn't have a fixed value.Term: A term can be a single constant, a single variable, or a combination of a variable and a constant combined with multiplication or division.Coefficient: A coefficient is a number that is multiplied by a variable in an expression.given:
(1*9^1/9) ^9
Multiply 9 and 1/9
we get
9*1/9 = 1
and 19* 1= 19
Hence, the simplified expression is 19.
Learn more about expression here:
https://brainly.com/question/14083225
#SPJ2
What is the solution of mc018-1.jpg ? (Picture added)
The solution to the equation [tex]\sqrt{1-3x}= x+3[/tex] is x = -8 or x = -1.
To find the solution of the equation √(1-3x) = x+3, we can use algebraic techniques to isolate the variable x.
First, let's square both sides of the equation to eliminate the square root:
[tex](\sqrt{1-3x})^{2} = (x+3)^2[/tex]
Simplifying, we get:
[tex]1-3x = x^2 + 6x + 9[/tex]
Next, let's gather all the terms on one side of the equation:
[tex]x^2 + 6x + 9 - 1 + 3x = 0[/tex]
Simplifying further, we have:
[tex]x^2 + 9x + 8 = 0[/tex]
Now, we can factor the quadratic equation:
(x+1)(x+8) = 0
Setting each factor equal to zero, we have:
x+1 = 0 or x+8 = 0
Solving these equations, we find:
x = -1 or x = -8
Therefore, the solution to the equation [tex]\sqrt{1-3x}= x+3[/tex] is x = -8 or x = -1.
To Learn more about quadratic equation here:
https://brainly.com/question/1214333
#SPJ6