Answer:
[tex]A=125.66\ cm^2[/tex]
Step-by-step explanation:
The complete question is
The area of the shaded region is the area inside the larger circle and outside the smaller circle
so
To find out the area of the shaded region subtract the area of the smaller circle from the area of the larger circle
Remember that
The area of the circle is
[tex]A=\pi r^{2}[/tex]
therefore
The area of the shaded region is
[tex]A=\pi [r_1^2-r_2^2][/tex]
where
[tex]r_1=11\ cm[/tex] ---> radius of the larger circle
[tex]r_2=9\ cm[/tex] ---> radius of the smaller circle
assume
[tex]\pi =3.1416[/tex]
substitute
[tex]A=3.1416 [11^2-9^2][/tex]
[tex]A=3.1416 [40][/tex]
[tex]A=125.66\ cm^2[/tex]
What is the negation of the following statement a triangle cannot contain two right angles
Answer:
It is because a triangle has a total angle sum of 180 degrees.
Step-by-step explanation:
90+90=180
But that was only 2 corners so the last corner has to be 0 degrees which is impossible.
Answer: A triangle does not contain two right angles.
.
Step-by-step explanation:
For which pairs of functions is (f circle g) (x)?
f (x) = x squared and g (x) = StartFraction 1 Over x EndFraction
f (x) = StartFraction 2 Over x EndFraction and g (x) = StartFraction 2 Over x EndFraction
f (x) = StartFraction x minus 2 Over 3 EndFraction and g (x) = 2 minus 3 x
f (x) = one-half x minus 2 and g (x) = one-half x + 2
Mark
Option B is correct. The required composite function where f(g(x)) is x is f (x) = StartFraction 2 Over x EndFraction and g (x) = StartFraction 2 Over x EndFraction
Composite functions are functions written inside another function e.g f(g(x))
Given the expressions
f(x) = 2/x
g(x) = 2/x
We are to find the composite function f(g(x))
f(g(x)) = f(2/x)
f(2/x) = (2/(2/x))
f(2/x) = 2 * x/2
f(2/x) = x
Hence the required composite function where f(g(x)) is x is f (x) = StartFraction 2 Over x EndFraction and g (x) = StartFraction 2 Over x EndFraction
[tex]1. \( (f \circ g)(x) = \frac{1}{x^2} \)\\2. \( (f \circ g)(x) = x \)\\3. \( (f \circ g)(x) = -x \)\\4. \( (f \circ g)(x) = \frac{1}{4}x - 1 \)[/tex]
let's break down each pair of functions and find their composition:
1. For [tex]\( f(x) = x^2 \) and \( g(x) = \frac{1}{x} \):[/tex]
To find [tex]\( (f \circ g)(x) \)[/tex], we substitute [tex]\( g(x) \) into \( f(x) \):[/tex]
[tex]\[ (f \circ g)(x) = f(g(x)) = f\left(\frac{1}{x}\right) = \left(\frac{1}{x}\right)^2 = \frac{1}{x^2} \][/tex]
So, [tex]\( (f \circ g)(x) = \frac{1}{x^2} \).[/tex]
2. For [tex]\( f(x) = \frac{2}{x} \) and \( g(x) = \frac{2}{x} \):[/tex]
Here, [tex]\( (f \circ g)(x) = f(g(x)) = f\left(\frac{2}{x}\right) \).[/tex]
When you substitute [tex]\( \frac{2}{x} \) into \( f(x) \),[/tex] you get:
[tex]\[ (f \circ g)(x) = f\left(\frac{2}{x}\right) = \frac{2}{\frac{2}{x}} = x \][/tex]
So, [tex]\( (f \circ g)(x) = x \).[/tex]
3. For [tex]\( f(x) = \frac{x-2}{3} \) and \( g(x) = 2 - 3x \):[/tex]
[tex]\( (f \circ g)(x) = f(g(x)) = f(2 - 3x) \).[/tex]
Substituting [tex]\( 2 - 3x \) into \( f(x) \),[/tex]we get:
[tex]\[ (f \circ g)(x) = f(2 - 3x) = \frac{(2 - 3x) - 2}{3} = \frac{-3x}{3} = -x \][/tex]
So, [tex]\( (f \circ g)(x) = -x \).[/tex]
4. For [tex]\( f(x) = \frac{1}{2}x - 2 \) and \( g(x) = \frac{1}{2}x + 2 \):[/tex]
Here, [tex]\( (f \circ g)(x) = f(g(x)) = f\left(\frac{1}{2}x + 2\right) \).[/tex]
When you substitute [tex]\( \frac{1}{2}x + 2 \) into \( f(x) \),[/tex] you get:
[tex]\[ (f \circ g)(x) = f\left(\frac{1}{2}x + 2\right) = \frac{1}{2}\left(\frac{1}{2}x + 2\right) - 2 = \frac{1}{4}x + 1 - 2 = \frac{1}{4}x - 1 \][/tex]
So, [tex]\( (f \circ g)(x) = \frac{1}{4}x - 1 \).[/tex]
So, summarizing:
1. For [tex]\( f(x) = x^2 \) and \( g(x) = \frac{1}{x} \), \( (f \circ g)(x) = \frac{1}{x^2} \).[/tex]
2. For [tex]\( f(x) = \frac{2}{x} \) and \( g(x) = \frac{2}{x} \), \( (f \circ g)(x) = x \).[/tex]
3. For [tex]\( f(x) = \frac{x-2}{3} \) and \( g(x) = 2 - 3x \), \( (f \circ g)(x) = -x \).[/tex]
4. For [tex]\( f(x) = \frac{1}{2}x - 2 \) and \( g(x) = \frac{1}{2}x + 2 \), \( (f \circ g)(x) = \frac{1}{4}x - 1 \).[/tex]
What is the coeficient of n in the following expression?
m+3n+5
Answer:
3 is the coefficient
Step-by-step explanation:
please find the attached file for more details please
- the coefficient is always the number before a variable.
m + 3n + 5
coefficient: 3
What is the product of any nonzero real number and it's reciprocal?
Answer:
1
Step-by-step explanation:
The product of a nonzero number and its reciprocal is 1
Answer:
Step-by-step explanation:
The product will always equal 1. This is one of the methods we use to solve equations. If our nonzero real number is 3, for example, the reciprocal of 3 is 1/3 and
3 × [tex]\frac{1}{3}[/tex] can be written as
[tex]\frac{3}{1}[/tex] × [tex]\frac{1}{3}[/tex] which is 3/3 which = 1.
A restaurant bill is $59 and you pay $72. What percentage gratuity did you pay ? Show work please:
You paid 22% gratuity at the restaurant.
Step-by-step explanation:
Given,
Amount of bill = $59
Amount paid = $72
Gratuity = Amount paid - Amount of bill
Gratuity = 72 - 59 = $13
Gratuity percentage = [tex]\frac{Gratuity}{Amount\ of\ bill}*100[/tex]
Gratuity percentage = [tex]\frac{13}{59}*100=\frac{1300}{59}[/tex]
Gratuity percentage = 22.03%
Rounding off to whole percent
Gratuity percentage = 22%
You paid 22% gratuity at the restaurant.
Keywords: percentage, subtraction
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The percentage did you pay is 22.03%
Given that,
A restaurant bill is $59 and you pay $72.Based on the above information, the calculation is as follows:
[tex]= (\$72 - \$59) \div (\$59)\\\\= \$13 \div \$59[/tex]
= 22.03%
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The function f is such that f(x) = x^2 – 2x + 3
Solve f(x) = 27
(The bottom question in the photo)
Answer:
x = - 4, x = 6
Step-by-step explanation:
Given
f(x) = x² - 2x + 3 and f(x) = 27, then equating the 2 gives
x² - 2x + 3 = 27 ( subtract 27 from both sides )
x² - 2x - 24 = 0 ← in standard form
Consider the factors of the constant term (- 24) which sum to give the coefficient of the x- term (- 2)
The factors are - 6 and + 4, since
- 6 × 4 = - 24 and - 6 + 4 = - 2, thus
(x - 6)(x + 4) = 0
Equate each factor to zero and solve for x
x - 6 = 0 ⇒ x = 6
x + 4 = 0 ⇒ x = - 4
f(x)= 27
x^2 -2x+3=27
×^-2x+3-27=0
x^2x-24=0
(x-6)(x-4)=0
x-6=0 or ×-4=0
×=6or ×=4
$13,957 is invested, part at 7% and the rest at 6%. If the interest earned from the amount invested at 7% exceeds the interest earned from the amount invested at 6% by $833.73, how much is invested at each rate?
Answer:
The Amount invested at 7% interest is $12,855
The Amount invested at 6% interest = $1,102
Step-by-step explanation:
Given as :
The Total money invested = $13,957
Let The money invested at 7% = [tex]p_1[/tex] = $A
And The money invested at 6% = [tex]p_2[/tex] = $13957 - $A
Let The interest earn at 7% = [tex]I_1[/tex]
And The interest earn at 6% = [tex]I_2[/tex]
[tex]I_1[/tex] - [tex]I_2[/tex] = $833.73
Let The time period = 1 year
Now, From Simple Interest method
Simple Interest = [tex]\dfrac{\textrm principal\times \textrm rate\times \textrm time}{100}[/tex]
Or, [tex]I_1[/tex] = [tex]\dfrac{\textrm p_1\times \textrm 7\times \textrm 1}{100}[/tex]
Or, [tex]I_1[/tex] = [tex]\dfrac{\textrm A\times \textrm 7\times \textrm 1}{100}[/tex]
And
[tex]I_2[/tex] = [tex]\dfrac{\textrm p_2\times \textrm 6\times \textrm 1}{100}[/tex]
Or, [tex]I_2[/tex] = [tex]\dfrac{\textrm (13,957 - A)\times \textrm 6\times \textrm 1}{100}[/tex]
∵ [tex]I_1[/tex] - [tex]I_2[/tex] = $833.73
So, [tex]\dfrac{\textrm A\times \textrm 7\times \textrm 1}{100}[/tex] - [tex]\dfrac{\textrm (13,957 - A)\times \textrm 6\times \textrm 1}{100}[/tex] = $833.73
Or, 7 A - 6 (13,957 - A) = $833.73 × 100
Or, 7 A - $83,742 + 6 A = $83373
Or, 13 A = $83373 + $83742
Or, 13 A = $167,115
∴ A = [tex]\dfrac{167115}{13}[/tex]
i.e A = $12,855
So, The Amount invested at 7% interest = A = $12,855
And The Amount invested at 6% interest = ($13,957 - A) = $13,957 - $12,855
I.e The Amount invested at 6% interest = $1,102
Hence,The Amount invested at 7% interest is $12,855
And The Amount invested at 6% interest = $1,102 . Answer
Final answer:
The total amount invested and the difference in interest earned. Then, using algebraic techniques such as substitution or elimination, we solve for the amounts invested at 7% and at 6%.
Explanation:
To solve the problem of allocating investments at different interest rates, we can set up a system of equations. Let's designate x as the amount invested at 7% and y as the amount invested at 6%. Given the total investment is $13,957, our first equation will be:
x + y = 13,957 (1)
The interest from the amount invested at 7% exceeds the interest from the amount invested at 6% by $833.73. The second equation, reflecting the interest earned, will be:
0.07x - 0.06y = 833.73 (2)
y = 13,957 - x (3)
Now, substitute equation (3) into equation (2) and solve for x:
0.07x - 0.06(13,957 - x) = 833.73
Simplify and solve this equation to find the value of x.
Once we have the value for x, we can use equation (3) to find the corresponding value for y, giving us the amount invested at each interest rate.
the units digit of a two-digit number is twice the tens digit. If the digits are reversed, the new number is 9 less than the original number. What is the original number?
Answer:
36
Step-by-step explanation:
Here is the correct and complete question: The units digit of a two-digit number is twice the tens digit. If the digits are reversed, the new number is 9 less than twice the original number. What is the original number?
Lets assume the original number be"10y+x". (x is unit digit and y is 10th digit)
∴ if number is reversed then resulting number be "10x+y".
As given: x= 2y
and [tex]10x+y= 2(10y+x)-9[/tex]
Now, solving the equation to get original number.
[tex]10x+y= 2(10y+x)-9[/tex]
Distributing 2 to 10y and x, then opening the parenthesis.
⇒ [tex]10x+y= 20y+2x-9[/tex]
subtracting by (2x+y) on both side.
⇒ [tex]8x= 19y-9[/tex]
subtituting the value of "x", which is equal to 2y.
∴ [tex]8\times 2y= 19y-9[/tex]
⇒ [tex]16y=19y-9[/tex]
subtracting both side by (16y-9)
⇒ [tex]3y= 9[/tex]
cross multiplying
We get, [tex]y= 3[/tex]
y=3
∵x= 2y
[tex]x=2\times 3= 6[/tex]
∴ x= 6
Therefore, the original number will be 36 as x is the unit number and y as tenth number.
Write 48.4% as a decimal and as a simplified fraction
Answer:
121/250
Step-by-step explanation:
Look at the picture
The decimal equivalent of 48.4% is 0.484 and the simplified fraction equivalent is 242/500.
Explanation:To convert 48.4% to a decimal, you simply divide the percentage by 100. Therefore, 48.4% as a decimal would be 0.484.
To write 48.4% as a simplified fraction, we start with the fraction that percentage represents, which is 48.4 / 100. However, both these numbers are divisible by 2 which simplifies it to 242 / 500. That is the simplest form of the fraction represented by 48.4%.
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a line intersects the point (13,-4) and (1,12).Find the slope and simplify completely
Answer:
[tex]m=-\frac{4}{3}[/tex]
Step-by-step explanation:
The formula to calculate the slope between two points is equal to
[tex]m=\frac{y2-y1}{x2-x1}[/tex]
we have
the point (13,-4) and (1,12)
substitute the values in the formula
[tex]m=\frac{12+4}{1-13}[/tex]
[tex]m=\frac{16}{-12}[/tex]
[tex]m=-\frac{16}{12}[/tex]
simplify
[tex]m=-\frac{4}{3}[/tex]
Answer:
-4/3
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(12-(-4))/(1-13)
m=(12+4)/-12
m=16/-12
simplify
m=-4/3
the sum of three numbers is 50 the second number is three times the first number and the third number is twice the second number what are the numbers
Answer:1st is 5 2nd is 15 last is 30
Step-by-step explanation:
1st = 5
2nd = 3 x 5 = 15
3rd = 15 x 2 = 30
5 + 15 + 30 = 50
The three numbers in question are 5, 15, and 30. This has been achieved by setting up and solving algebraic equations based on the given conditions.
Explanation:To solve this problem, we should set up equations based on the information given. Let's define:
First number = x
Second number = 3x (since it is three times the first number)
Third number = 2 * 3x = 6x (since it is twice the second number)
According to the problem, the sum of these three numbers is 50. Therefore, we can write the equation as:
x + 3x + 6x = 50
Solve for x:
10x = 50
x = 50 / 10 = 5
So, the three numbers are:
First number = x = 5
Second number = 3x = 3 * 5 = 15
Third number = 6x = 6 * 5 = 30
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A boat rental charges $7.50 for the first hour and $2 for each additional hour. Which rule gives the cost for x hours of renting a boat?
c = 7.50 + 2(x - 1) is the rule that gives cost for "x" hours of renting a boat
Solution:Given that a boat rental charges $7.50 for the first hour and $2 for each additional hour.
To find: Rule that gives the cost for x hours of renting a boat
Let "x" be the total hours of renting a boat
[tex]c = f + (v \times x - 1)[/tex]
"c" is the total cost for the boat rent
"f" is the fixed cost for boat rent for first hour
"v" is the cost for each additional hours of rent
"x" is the total hours of renting a boat
In the expression we have used "x - 1" to represent the additional hour of boat rent after first hour
Here f = $ 7.50
v = $ 2
[tex]c = 7.50 + 2 \times x - 1\\\\c = 7.50 + 2(x - 1)[/tex]
Thus c = 7.50 + 2(x - 1) is the rule that gives cost for "x" hours of renting a boat
The cost for renting a boat for x hours can be found using the formula y = 7.50 + 2(x - 1), where y is the total cost and x is the number of hours.
Explanation:Based on the given information, the boat rental company charges $7.50 for the first hour and then an additional $2 for each subsequent hour. Therefore, if x is the number of hours you rent the boat, the total cost would be calculated using the formula y = 7.50 + 2(x - 1). Here, y represents the total cost of renting the boat for x hours. The formula subtracts the one-hour charge included in the initial payment.
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Kim drove from Mathtown at (-2, 5) to Geometryville at (3, -1) to Algebra Springs at (-6, -5), and then back to Mathtown. Find the total distance Kim traveled to the nearest hundredth.
Answer:
33.38 km
Step-by-step explanation:
Kim drove from Math Town at (-2, 5) to Geometry Ville at (3, -1) to Algebra Springs at (-6, -5), and then back to Math town.
Now, the distance from (-2,5) point to (3,-1) point will be
[tex]\sqrt{(- 2 - 3)^{2} + (5 - (-1))^{2}} = \sqrt{61}[/tex] km.
Again, the distance from point (3,-1) and (-6,-5) point will be
[tex]\sqrt{(3 - (- 5))^{2} + (- 1 - (- 5))^{2}} = \sqrt{80}[/tex] km.
Therefore, the total distance Kim traveled will be = [tex]2(\sqrt{61} + \sqrt{80}) = 33.38[/tex] Km. (Answer)
The distance between two points [tex](x_{1},y_{1})[/tex] and [tex](x_{2},y_{2})[/tex] on the coordinate plane is given by
[tex]\sqrt{(x_{1} - x_{2})^{2} + (y_{1} - y_{2})^{2}}[/tex]
Find the equation of the image of a line y=3x-8 after reflection over the x-axis
Answer:
The required image line is 3x + y = 8
Step-by-step explanation:
We have to find two points on the given straight line then find their reflection points over the x-axis and then finally the straight line passing through those two image points will give the required straight line.
Now, the given straight line is y = 3x - 8.
Now, two any points on this straight line are say (1,-5) and (2,-2).
So, the image of (1,-5) point reflecting over the x-axis will be (1,5) and the image of the point (2,-2) reflecting over the x-axis will be (2,2).
Therefore, the straight line passing through those two image points will have equation
[tex]\frac{y - 5}{5 - 2} = \frac{x - 1}{1 - 2}[/tex]
⇒ y - 5 = 3(1 - x)
⇒ y - 5 = 3 - 3x
⇒ 3x + y = 8
Hence, the required image line is 3x + y = 8 (Answer)
Which is a correct first step for solving this equation?
x + 7 = 2x + 5 - 4x
Answer:getting rid of the constant
Step-by-step explanation:
Answer: simplify x + 7 = 2x + 5 - 4x by combining like terms so x+7= 5-2x
Step-by-step explanation:
Factor completely 2x2 − 50.
a) Prime
b) 2(x − 5)(x + 5)
c) 2(x2 − 25)
d) 2(x + 5)(x + 5)
Answer:
(B) 2(x+5)(x−5)
Explanation:
Factor 2x²−50
2(x+5)(x−5)
Answer:
b) 2(x - 5)(x + 5)
Step-by-step explanation:
2x² - 50
2(x² - 25)
(x² - 25) is a difference of squares and it equals (x - 5)(x + 5)
So the answer is;
2(x - 5)(x + 5)
The graph of f(x)= (0.5)^x is replaced by the graph of g(x) = (0.5)^x-k. If g(x) is obtained by shifting f(x) down 2 units, then what is the value of k?
A) k=2
B) k=1/2
C) k= -2
D) k= -1/2
A) k=2 is the right answer
Step-by-step explanation:
The downward funtion transformation is defined as:
f(x) => f(x)-b where b is an integer.
Given
[tex]f(x) = (0.5)^x[/tex]
And
[tex]g(x) = (0.5)^x-k[/tex]
It is also given that g(x) is obtained by shifting function f 2 units downward
We will apply the transformation to function f to find the value of k.
So,
Shifting f(x) 2 units downward
we will get
[tex]g(x) = (0.5)^x-2[/tex]
comparing with [tex]g(x) = (0.5)^x-k[/tex] we get that
k = 2
So,
A) k=2 is the right answer
Keywords: Functions, shifting
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Answer:
ok k does = 2 i got it right on the test
Step-by-step explanation:
:3
help me??? please????
Answer:
∠2 = 78°
Step-by-step explanation:
Angle of a straight line is 180°.
So, that would mean ∠1 + ∠2 = 180°.
⇒ ∠2 = 180° - ∠1
⇒ ∠2 = 180° - 102°
⇒ ∠2 = 78°
Hence, the answer.
You need to rent a bowling lane. On Friday nights, you have two options. Option A is a $20 lane rental plus $3 per game. Option B is a $35 lane rental with a maximum of 10 games. For what number of games is the cost the same for each option?
For 5 games, the cost will be equal for each option.
Step-by-step explanation:
Given,
Lane rental of offer A = $20
Per game charges = $3
Let,
x be the number of games.
A(x) = 3x + 20
Lane rental is $35 for maximum 10 games.
B(x) = 35
For the cost to be same;
A(x) = B(x)
[tex]3x+20=35\\3x=35-20\\3x=15[/tex]
Dividing both sides by 3
[tex]\frac{3x}{3}=\frac{15}{3}\\x=5[/tex]
For 5 games, the cost will be equal for each option.
Keywords: function, division
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Which equation represents the line that is perpendicular to graph of 4x+3y=9 and passes through (-2,3)
The equation of the line which is perpendicular to the line 4x + 3y = 9 and passes through the point (-2,3) is y = 3/4x + 4.5.
Explanation:The original equation is 4x + 3y = 9. To start off, rewrite this equation in slope-intercept form (y = mx + b) to help find the slope. After isolating y, the equation turns into y = -4/3x + 3. So, the slope of the original line is -4/3.
Perpendicular lines have slopes which are negative reciprocals of each other, thus the slope of the line perpendicular to the given line is the negative reciprocal of -4/3, which is 3/4 (m = 3/4 for the second line)
We are also given that the line we are looking for passes through the point (-2,3). Use the point-slope form of a line, given by y - y1 = m(x - x1), where m is the slope, and (x1, y1) is the given point. Substituting in the values, you get:
y - 3 = 3/4(x - -2).
Simplifying the equation, we find that the line perpendicular to 4x + 3y = 9 and passing through (-2, 3) is y = 3/4x + 4.5
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WORTH 100 SEE PICTURE WHEN YOU CLICK TO ANSWER HERE ARE THE QUESTIONS IF NOT VISIBLE FROM PIC
(answer questions 1-4 with the chart provided)
Answer:
Step-by-step explanation:
Let x represent the number of days , then
(1) The exponential function to represent the spread of Ben's social media spread implies :
f(x) = 2([tex]3^{x}[/tex])
(2) The exponential function that represent carter;s social media spread implies
f(x) = 10([tex]2^{3}[/tex]
(3) the graph of the three functions is attached below
color red graph represents Ben's social media spread , the graph with color blue represents Carter;s social media spread and the graph with green color represents Amber's social media spread
(4) on the 3rd day
Amber will receive 192 shares .
The equation for the spread of his shares is
f(x) = 3([tex]4^{x}[/tex]
where x is the number of days , so we have
3([tex]4^{3}[/tex])
= 3 ( 64)
= 192 shares
Ben's shares on the 3rd day will be
f(x) = 2([tex]3^{x}[/tex] )
= 2([tex]3^{3}[/tex])
= 2 ( 27)
= 54
Therefore , Ben will have 54 shares on the third day
Carter's share on the third day
f(x) = 10 ( [tex]2^{x}[/tex] )
= 10 ([tex]2^{3}[/tex] )
= 10 (8)
= 80
Therefore , Carter will receive 80 shares on the 3rd day
help please ...........
Answer:
D. 120°
Step-by-step explanation:
Interior angles of a rhombus always add up to 360 degrees. Thus we can set up an equation:
g+g+2g+2g=360
Now let's combine all the like terms (g's).
6g=360
Now we divide both sides by six to isolate g.
g=60
We can now substitute g into angle B, to find its value.
2g
2(60)
120
Thus, the measure of angle B is 120, or option D.
If r=-4x - 17 find r(5)
Answer:
-37
Step-by-step explanation:
-4(5)-17=-20-17=-37
Answer: r = 3
1st Step: Plug x in for 5
4(5)-17
Second Step: Multiply 4 and 5
20-17
Third Step: 20-17
20-17=3
So, the answer is 3 when r(5)
Hope this helps!
Identify the slope of the line for the equation y = 8x − 9.
A) −9
B) −8
C) 8
D) 9
Help help help help help
Answer:
8
Step-by-step explanation:
To solve this, you can add 2/5 b to both sides of the equation. You now have 3 + 5/5 (or 1) b = 11. => 3 + b = 11 => Now, subtract 3 from both sides, and you have b = 11 - 3, and then b = 8.
Step-by-step explanation:
3 + 2/5 b =11 - 2/5 b (this is the given question is it?)
2/5 b + 2/5 b= 11 - 3 (like terms together, you transpose -2/5b to the other side as shown.)
2b+2b = 8 ( at that stage you would find t
5 hat 5 is the common value to go into 5 itself, as shown.
4b = 8 ( you just add 2b + 2b to have 4b)
5
4b = 8 ( at that point you cross multiply
5 1 as shown)
4b = 8 × 5 ( simple math as shown)
4b = 40 ( you multiply 8 × 5 to obtain 40)
b =10 you can prove that. Thank you.
A bicycle wheel with the diameter 70cm is making 25 revolutions while travelling. Find the distance covered by the bicycle
The total distance covered by the bicycle is calculated using the circumference of the wheel and the number of revolutions made. With a wheel diameter of 70 cm, the total distance comes to approximately 55.0 meters after 25 revolutions.
Explanation:The question involves calculating the distance covered by a bicycle wheel making a certain number of revolutions. Given that the diameter of the wheel is 70 cm, we can find the circumference, which is the distance the wheel covers per revolution. The circumference is equal to \\(\pi\cdot d\\), where \\(d\\) is the diameter. Substituting the given diameter:
Circumference = \\(\pi \times 70 \\text{cm}\\)Since the wheel makes 25 revolutions, the total distance covered (\\em{D}}) can be found by multiplying the circumference by the number of revolutions:
Total distance covered = Circumference \\(\times\\) Number of revolutionsTotal distance covered = \\(\pi \times 70 \\text{cm} \times 25\\)Thus, the bicycle covers a distance of \\(25 \times \pi \times 70 \\text{cm}\\), or \\(25 \times \pi \times 0.7 \\text{m}\\), since 100 cm equals 1 meter.
To find the exact value, you would calculate:
Total distance covered = \\(25 \times \pi \times 0.7 \\text{m} \\approx 55.0 \\text{meters}\\)y = 5- 2
1-3x + y = -12
What is the value of x and y ?
Answer:
x=5.333
y=3
Step-by-step explanation:
given, y=5-2............(1)
1-3x+y=-12...............(2)
y=5-2=3
put y=3 in equ (2)
1-3x+3=-12
1+3+12=3x
3x=16
x=[tex]\frac{16}{3}[/tex]
x=5.333
hence, x=5.333
y=3 answer
What is the solution set to the inequality 7z+5>47
Answer:
[tex]z>6[/tex]
Step-by-step explanation:7z+5>47
Remove the 5:
[tex]7z+5-5>47-5\\7z>42[/tex]
Divide by 7 to get z by itself:
[tex]\frac{7z}{7} >\frac{42}{7} \\z>6[/tex]
Sphere radius 7 inches what's the volume
Answer:
The volume of sphere is 1436.03 inches³.
Step-by-step explanation:
Given:
The radius of sphere = 7 inches.
Now, to find the volume.
So, to get the volume we put the formula:
[tex]Volume=\frac{4}{3} \pi r^3[/tex]
Taking the value of π = 3.14
[tex]Volume=\frac{4}{3}\times 3.14\times {7}^3[/tex]
[tex]Volume=\frac{4}{3}\times 3.14\times 343[/tex]
[tex]Volume=\frac{4}{3}\times 1077.02[/tex]
[tex]Volume=\frac{4308.08}{3}[/tex]
[tex]Volume=1436.03\ inches^3[/tex]
Therefore, the volume of sphere is 1436.03 inches³.
Step-by-step explanation: To find the volume of the sphere, start with the formula for the volume of a sphere.
Volume = [tex]\frac{4}{3} \pi r^{3}[/tex]
Notice that our sphere has a radius of 7 inches so plugging into the formula, we have [tex](\frac{4}{3})(\pi)(7 in.)^{3}[/tex].
Start by simplifying the exponent. (7 in.)³ is equal to 7 inches x 7 inches x 7 inches or 343 in³ so we have [tex](\frac{4}{3}) (343 in.^{3})(\pi)[/tex].
Next, 4 x 343 is 1,372 which gives us [tex]\frac{1,372\pi }{3}[/tex]. Notice that 1,372 doesn't divide by 3 so this is our final answer for the volume of the sphere.
John is selling candy bars the equation is p=c^2+2c-5 determines the profit,p, where c is the number of candy bars sold what is the minimum number of candy bars he needs to sell to make profit
Answer:
2
Step-by-step explanation:
Find the value of c where p = 0.
0 = c² + 2c − 5
6 = c² + 2c + 1
6 = (c + 1)²
±√6 = c + 1
c = -1 ± √6
c must be positive, so c = -1 + √6 ≈ 1.45. So John must sell at least 2 candy bars to make a profit.
We can also show this using trial and error.
If c = 0, then p = -5
If c = 1, then p = -2
If c = 2, then p = 3