Answer:
1,005 cubic centimeters
Step-by-step explanation:
step 1
Find the radius of the base of cylinder
The circumference is equal to
[tex]C=2\pi r[/tex]
we have
[tex]C=16\pi\ cm[/tex]
so
[tex]16\pi=2\pi r[/tex]
solve for r
[tex]r=8\ cm[/tex]
step 2
Find the volume
we know that
The volume of a cylinder is equal to
[tex]V=\pi r^{2}h[/tex]
we have
[tex]r=8\ cm\\h=5\ cm[/tex]
substitute
[tex]V=\pi (8)^{2}(5)[/tex]
[tex]V=320\pi\ cm^3[/tex] ----> exact value
Assume
[tex]\pi =3.14[/tex]
substitute
[tex]V=320(3.14)=1,004.8\ cm^3[/tex]
so
The approximate value is [tex]1,005\ cm^3[/tex]
The volume of the cylinder in cubic centimeters is 251.2 cm^3
The volume of a cylinder is expressed as:
V = πr²hV = base area * heightGIven the following
Base area = 16π centimeters
Height = 5cm
Substitute into the formula to have:
V = 16(3.14) * 5
V = 251.2 cm^3
Hence the volume of the cylinder in cubic centimeters is 251.2 cm^3
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Factor completely 81x^8-1
The complete factorized form for the given expression is [tex]\left(9 x^{4}+1\right)\left(3 x^{2}+1\right)\left(3 x^{2}-1\right)[/tex]
Step-by-step explanation:
Step 1: Given expression:
[tex]81 x^{8}-1[/tex]
Step 2: Trying to factor as a Difference of Squares
Factoring [tex]81 x^{8}-1[/tex]
As we know the theory that the difference of two perfect squares, [tex]A^{2}-B^{2}[/tex] can be factored into (A+B) (A-B)
from this, when analysing, 81 is the square of 9, [tex]x^{8}[/tex] is the square of [tex]x^{4}[/tex]. Hence, we can write the given expression as,
[tex]\left(9 x^{4}\right)^{2}-1^{2}[/tex]
By using the theory, we get
[tex]\left(9 x^{4}+1\right)\left(9 x^{4}-1\right)[/tex]
Again, we can further factorise the term [tex]\left(9 x^{4}-1\right)[/tex]
[tex]9 x^{4}[/tex] is the square of [tex]3 x^{2}[/tex]. Therefore, it can be expressed as below
[tex]\left(3 x^{2}+1\right)\left(3 x^{2}-1\right)[/tex]
Now, we can not factorise further the term [tex]\left(3 x^{2}-1\right)[/tex]. Because it will come as [tex]\sqrt{3} x[/tex] (3 is not a square term). Thereby concluding that the complete factorisation for the given expression is [tex]\left(9 x^{4}+1\right)\left(3 x^{2}+1\right)\left(3 x^{2}-1\right)[/tex]
The perimeter of a standard-sized rectangular rug is 36 ft. The length is 2 ft longer than the width. Find the dimensions
What is the width?
What is the length?
Answer:
Step-by-step explanation:
let x be the width.
length = x +2
Perimeter = 36 ft
2*( x +2 + x ) =36
2x + 2 = 36/2
2x + 2 = 18
2x = 18 -2 = 16
x = 16/2
x = 8 ft
Width = 8 ft
Length = 8 + 2 = 10 ft
Help please! The trapezium question!
Answer:
formula for sum of interior angles is (n-2)*180 - for a regular polygon
divide that by the number of sides
so 6-2 = 4*180 =720 degrees
720/6 = one angle(angle a) =120
Answer:
D. 120 degrees.
Step-by-step explanation:
We nee to find the measure of the interior angle in a regular hexagon.
The exterior angle = 360 / 6 = 60 degrees. ( In all convex polygons the sum of the exterior angles = 360 degrees).
So α = 180 - 60 = 120 degrees (adjacent angles add up to 180 degrees).
5x+7=8x-71 what is x
Answer:
x = 26
Step-by-step explanation:
Let's solve your equation step-by-step.
5x+7=8x−71
Step 1: Subtract 8x from both sides.
5x+7−8x=8x−71−8x
−3x+7=−71
Step 2: Subtract 7 from both sides.
−3x+7−7=−71−7
−3x=−78
Step 3: Divide both sides by -3.
−3x / −3 = −78 / −3
x=26
I hope this helps!
Brainliest is very much appreciated.. :}
Answer:
x=26
Step-by-step explanation:
5x-8x= -71 -7
-3x= -78
-3. -3
The diagonals of a rhombus are 14 and 48 cm Find the length of a side of the rhombus
kim was solving a problem using Six steps first she read the problem then she wrote down the facts and figures next she knew she had to find a
Answer:
an equations which can be used to find the answer.
Answer: must be found.
Step-by-step explanation:
Given that 2( -x + 4) = 3 , prove that x = 5/2.
Answer: proved
Step-by-step explanation:
-2x+8=3
-2x=3-8
-2x= -5
2x= 5
x=5/2
What is the average rate of change of the function g(x) = 3(2^x) - 6 over the interval [0,3]?
Final answer:
The average rate of change of the function g(x) = 3(2^x) - 6 over the interval [0,3] is 7. This is found by evaluating g(x) at x = 0 and x = 3 and then dividing the difference by the interval length.
Explanation:
Calculating Average Rate of Change
The average rate of change of a function over an interval is the change in the function's values divided by the change in the independent variable (often x) over that interval. For the function g(x) = 3(2^x) - 6 over the interval [0,3], we first find the values of g(x) at the endpoints of the interval: g(0) and g(3). We then use the formula for average rate of change:
[tex]\[\text{Average Rate of Change} = \frac{g(3) - g(0)}{3 - 0}\][/tex]
Let's compute:
g(0) = 3(2^0) - 6 = 3(1) - 6 = -3g(3) = 3(2^3) - 6 = 3(8) - 6 = 24 - 6 = 18Now we can substitute these values into the formula:
[tex]\[\frac{18 - (-3)}{3 - 0} = \frac{21}{3} = 7\][/tex]
So, the average rate of change of the function g(x) over the interval [0,3] is 7.
f the cube shown is 8 centimeters on all sides, what is the length of the diagonal, x, of the cube? (rounded to the nearest tenth)
A) 13.3 cm
B) 13.9 cm
C) 14.6 cm
D) 14.9 cm
Answer:
The length of the diagonal x is 13.9 cm
Step-by-step explanation:
Given:
Side of the cube = 8 centimetres
To Find:
The length of the diagonal = ?
Solution:
The length of the diagonal is = [tex]\sqrt{3}a[/tex]
where a is the side of the cube
On substituting the values
Diagonal x = [tex]\sqrt{3}(8)[/tex]
Diagonal x = [tex]1.73 \times 8[/tex]
diagonal x = 13.856
Diagonal x = 13.9 cm
What is the solution of
A. x = 0
B. x = 16 and x = 0
C. x = 16
D. x = 16 and x = 1
Yo sup??
we can simply try option verification for this problem.
when x=0 we get,
1 and 1≠5 therefore x=0 is not a solution.
when x=1 we get
√6-1≠5 therefore x=1 is not a solution.
when x=16 we get
9-4=5 therefore x=16 is a solution
Hence the correct answer is option C
Hope this helps.
Solve the equations to find the number and type of solutions.
The equation 8 - 4x = 0 has
real solution(s).
DONE
Answer:
One real solution (which is x = 2)
Step-by-step explanation:
8-4x = 0
8 = 4x
8/4 = 2
x=2
Can be solved with no different solution
How many solutions does this equation have?
(15x + 21) / 3
= 5x + 7
Answer:
3*(5*x-7)-(15*x-21)=0
Step-by-step explanation:
3 • (5x - 7) - (15x - 21) = 0
Step 2 :
Equation at the end of step 2 :
0 = 0
Step 3 :
Equations which are always true :
54 miles is 18% of how many miles?
Answer:
(set up a ratio)
54/x = 18/100
(cross multiply)
18x = 5400
(solve for x)
x = 300 miles
Step-by-step explanation:
A line intersects the points (0, -4) and
(1, 2). What is the slope-intercept
equation for this line?
y = [?]x+[
Equation is y = 6x - 4
Step-by-step explanation:
Step 1: Find the slope of the line using m = (y2 - y1)/(x2 - x1) Here x1 = 0, x2 = 1, y1 = -4, y2 = 2⇒ m = (2 - -4)/(1 - 0) = 6
Step 2: Find y-intercept, b. Since the line passes through (0, -4) b = -4Step 3: Form the slope-intercept equation⇒ y = 6x - 4
A 40% dye solution is to mixed with a 53% dye solution to get 260L of a 50% solution. How many liters of the 40% and 50% solutions will be needed
From given,
Final solution is 260 liter
Let x be the liters of 40 % dye solution
Then, (260 - x) is the liters of 53 % dye solution
Therefore, according to question,
x liters of 40 % dye solution is mixed with (260 - x) liters of 53 % dye solution to get 260 liters of 50 % dye solution
Thus we frame a equation as:40 % of x + 53 % of (260 - x) = 50 % of 260
Solve for "x"
[tex]\frac{40}{100} \times x + \frac{53}{100} \times (260-x) = \frac{50}{100} \times 260\\\\0.4x+ 0.53(260-x) = 0.5 \times 260\\\\0.4x + 137.8 - 0.53x = 130\\\\0.13x = 137.8 - 130\\\\0.13x = 7.8\\\\Divide\ both\ sides\ by\ 0.13\\\\x = 60[/tex]
Thus 60 liters of 40 % dye solution is used
Then, (260 - x) = 260 - 60 = 200
Thus 200 liters of 53 % dye solution is used
Find the arc length, x, when
r= 8 and 0 = 5 radians.
Answer:
Arc Length = 40
Step-by-step explanation:
Arc Length Formula: S = rΘ
R = radius
Θ = Radians
Step 1: Identify the radius and the radian angle
R = 8
Θ = 5 radians
Step 2: Plug into the equation
S = (8)(5)
Step 3: Solve
S = 40
Answer: Arc Length = 40
Which of these pairs of points defines a line with a slope -4/3?
A) (-1, 6) and (-4, 10)
B) (6, -1) and (-4, 10)
C) (-1, 6) and (10, -4)
D) (6, -1) and (10, -4
Slope is defined as (y2-y1)/(x2-x1)
"A" gives a slope of (10-6)/(-4-(-1))=4/-3=-4/3
Hope this helped
The point pair establishing a line with a slope of -4/3 is (-1, 6) and (-4, 10). which is the correct answer would be an option (A).
What is the slope of the line?The slope of a line is defined as the gradient of the line.
To determine the slope of a line, we can use the formula: slope m = (y₂ - y₁)/(x₂ -x₁ )
Using this formula, we can calculate the slope for each of the pairs of points given:
A) (-1, 6) and (-4, 10):
slope = (10 - 6)/(-4 - (-1)) = -4/3
B) (6, -1) and (-4, 10):
slope = (10 - (-1))/(-4 - 6) = -11/10
C) (-1, 6) and (10, -4):
slope = (-4 - 6)/(10 - (-1)) = -10/11
D) (6, -1) and (10, -4):
slope = (-4 - (-1))/(10 - 6) = -3/4
Therefore, the pair of points that defines a line with a slope of -4/3 is (-1, 6) and (-4, 10).
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The total number of burgers sold from a restaurant from Monday to Sunday can be modeled by the function f(d)=200d^3 + 542d^2 + 179d + 1605 and the number of visitors to the restaurant from Monday to Sunday can be modeled by g(d)= 100d + 321, where d is the number of days since Monday. What is the average number of burgers per person?
Answer:
Average = 96
Step-by-step explanation:
Average = sum of terms/ number of terms
sum of terms = number of burgers sold
number of terms = number of visitors
d = number of days since Monday which is 7
burgers sold = 200d^3 + 542d^2 + 179d + 1605 substituting d with 7
burgers sold = 200(7)³ +542(7)² + 179(7) +1605
burgers sold =68600 + 26558 + 1253 + 1605
burgers sold =98016
number of visitors= 100d + 321
number of visitors= 100(7) + 321
number of visitors= 700+321
number of visitors= 1021
Average = 98016/1021
Average = 96
really need help !!?????
Answer:
x = (150/360)(2π) = (5/6)π
Which expression is 5 times as much as the sum of r and s?
A) 5 × r + s
B) 5 + r + s
C) r + s × 5
D) (r + s) × 5
The option (D) (r + s) × 5 is correct if the expression is 5 times as much as the sum of r and s.
What is an expression?It is defined as the combination of constants and variables with mathematical operators.
We have a statement about the expression:
The expression is 5 times as much as the sum of r and s
We can frame the expression as follows:
= 5(r + s)
or
= (r + s) × 5
Thus, the option (D) (r + s) × 5 is correct if the expression is 5 times as much as the sum of r and s.
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3.14(6x)^2
jjjjjjjjjjjjjjjjjjjjjjjjjjjj
Answer:
Step-by-step explanation:
Step-by-step explanation:
[tex]3.14(6x)^{2} \\ \\ = 3.14 \times 36 {x}^{2} \\ \\ = 113.04 {x}^{2} \\ \\ [/tex]
Which ordered pair is the best estimate for the solution to the system
Answer:
The best estimate of the solution ordered pair from the graph is [tex](\frac{1}{2},0)[/tex].
Step-by-step explanation:
See the attached graph to this question.
The graph of two straight lines are shown in the graph.
Now, the two straight lines intersect on the x-axis, so the solution ordered pairs should have y-value equals to zero.
But, there are two ordered pairs with y-value zero and they are [tex](\frac{1}{2},0)[/tex] and [tex](\frac{1}{3},0)[/tex].
The best estimate of the solution ordered pairs from the graph is [tex](\frac{1}{2},0)[/tex].
So, this is the solution. (Answer)
What is the area of this parallelogram?
A. 364 cm²
B. 143 cm²
C. 91 cm²
D. 52 cm²
Parallelogram A B C D with side D C parallel to side A B and side A D parallel to side B C. Point F is between points D and C and connects to point B with a dotted segment. Point E is between points A and B is connected to point D with a dotted segment. D F B E is a rectangle with all right angles. D F is 4 centimeters. F C is 7 centimeters. E B is 4 centimeters. A E is 7 centimeters. D E is 13 centimeters.
Answer:52cm
Step-by-step explanation:
is 0.4562345 a rational number
Answer:
yes
Step-by-step explanation:
Answer:
no i believe its an irrational number
Step-by-step explanation:
Help please
Find the equation of a line that joins the midpoint of (7, 3) and (9, -7) and the y-intercept of
5x – 6 = 2y.
Answer:
y = [tex]\frac{1}{8}[/tex] x - 3
Step-by-step explanation:
Use the midpoint formula
Given (x₁, y₁ ) and (x₂, y₂ ) then the midpoint is
[ [tex]\frac{1}{2}[/tex] (x₁ + x₂ ), [tex]\frac{1}{2}[/tex] (y₁ + y₂ ) ]
Here (x₁, y₁ ) = (7, 3) and (x₂, y₂ ) = (9, - 7), thus
midpoint = [ [tex]\frac{1}{2}[/tex] (7 + 9), [tex]\frac{1}{2}[/tex] (3 - 7 ) ] = (8, - 2)
-----------------------------------------------------------
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Rearrange 5x - 6 = 2y into this form by dividing all terms by 2
y = [tex]\frac{5}{2}[/tex] x - 3 ← in slope- intercept form
with y- intercept c = - 3 ⇒ (0, - 3 )
-------------------------------------------------------------
Calculate m using the slope formula
m = (y₂ - y₁ ) / (x₂, x₁ )
with (x₁, y₁ ) = (8, - 2) and (x₂, y₂ ) = (0, - 3)
m = [tex]\frac{-3+2}{0-8}[/tex] = [tex]\frac{-1}{-8}[/tex] = [tex]\frac{1}{8}[/tex]
y = [tex]\frac{1}{8}[/tex] x - 3 ← equation of line
1. Is -7+9=-9+7 true, false, or open? (1 point)
O true
O false
open
Is Ay _ 3 = 19 true false or onen? noninti
Problem 1
-7+9 is the same as 9+(-7) or 9-7. All of which simplify to 2.
On the other hand, -9+7 is the same as 7+(-9) or 7-9, which simplifies to -2.
Therefore the equation -7+9 = -9+7 becomes 2 = -2, and we can see this is a false equation.
Answer: false========================
Problem 2
Your second question has some weird typo errors going on. Please update.
Each side of the regular hexagon below has the same measure. A hexagon with side lengths of 2.5 feet. If a model of the hexagon is made by using a scale factor of 6, which applies to the model? Select two options.. The model represents a reduction. Each side of the model is 15 feet long. The model is proportional to the original hexagon. One side of the model can be 8.5 feet. The scale factor is divided by 2.5 to get the dimensions of the model.
Answer:
b.) each side of the model is 15 feet long
c.) the model is proportional to the original hexagon
Step-by-step explanation:
A hexagon with side lengths of 2.5 feet. If a model of the hexagon is made by using a scale factor of 6, which applies to the model?
a.) The model represents a reduction
b.) each side of the model is 15 feet long
c.) the model is proportional to the original hexagon
d.) one side of the model can be 8.5 feet long
e.) the scale factor is divided by 2.5 to get the dimensions of the model
The answer to 21 + 1.7+ 0.25
Answer:
22.95
Step-by-step explanation:
Answer:
22.95
Step-by-step explanation:
The function g(x)=8(4x) is reflected across the x-axis to create f(x).
On a coordinate plane, 2 exponential functions are shown. Function f (x) approaches y = 0 in quadrant 3 and decreases into quadrant 4. It crosses the y-axis at (0, negative 8). Function g (x) approaches y = 0 in quadrant 2 and increases into quadrant 1. It crosses the y-axis at (0, 8).
What is the equation of f(x)?
f(x)=8(4)x
f(x)=−8(4)x
f(x)=8
f(x)=−8
Answer:
It’s B if you dont want to read all that.
Step-by-step explanation:
The equation of f(x) is f(x) = -8(4x).
Explanation:The equation of the reflected function f(x) can be obtained by changing the sign of the coefficient of g(x), which is 8.
So, the equation of f(x) is f(x) = -8(4x).
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1. Elana spent 45 minutes at the library, half an hour at the grocery
store, 20 minutes visiting a friend, and arrived home at 4:10 P.M.
What time did she leave home?
Answer:
2:25
Step-by-step explanation:
Answer:
Step-by-step explanation:
3:05