Yes ,induction can be used to prove the following is true for every nonnegitive integer n.
If P (n) is true, so is P (n + 1) because this argument holds true for any nonnegative integer n, it establishes the second fact required by the induction proof. As a result of the Induction Principle, the predicate P (m) is true for all nonnegative integers, m.
Mathematical induction is a technique for proving the truth of a statement, theorem, or formula for each and every natural number n. This is generalized as the 'Principle of Mathematical Induction,' which we would use to prove any mathematical statement.
For instance, 13 +23 + 33 +..... +n3 = (n(n+1) / 2)
The statement is assumed to be true for all natural number values in this case.
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r sin(π/4 - θ ) = 5 is a Straightline, how to find the portion it cuts from "x" axis
Answer:
the portion of the x-axis that the straight line cuts is the interval [5r, -5r].
Step-by-step explanation:
To find the portion of the x-axis that the straight line cuts, we first need to solve the equation for θ. The sine function has a range of [-1, 1], so the value of r must be greater than or equal to 5 in order for the equation to have a solution.
To solve the equation, we can use the fact that sin(π/4 - θ) = cos(θ). Therefore, the equation can be rewritten as:
cos(θ) = 5
We can then use the fact that cos(θ) = x/r to solve for x:
x = 5r
Therefore, the portion of the x-axis that the straight line cuts is the interval [5r, -5r].
Note that this is only valid if r is greater than or equal to 5. If r is less than 5, there are no solutions to the equation and the straight line does not cut the x-axis.
pls help me quick!!!
Using the fact that the two triangles are similar, we will see that the unknown side measures 50/3 units.
How to find the length of the unknown side?We know that the two triangles are similar, so if we take any two correspondent sides on the triangles and take the quotient, that will give a constant value. The base on the smaller triangle is 3, and the base in the larger one is 10, then the quotient gives:
Q = 10/3
If we make the quotient with the unknown we will get:Q = ?/5
The quotient is a constant, then these two quotients are equal:
10/3 = ?/5(10/3)*5 = ?50/3 = ?
In conclusion, the measure of the missing side is 50/3 units.
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100 students are interviewed to see which of biology, chemistry or physics they prefer.
29 of the students are girls. 9 of the girls like biology best.
20 of the boys prefer physics.
9 out of the 27 who prefer chemistry are girls.
What percentage of the students prefer biology?
The percentage of students that prefer biology only is; 60%
How to calculate the percentage?Percentage can simply be calculated by dividing the value by the total value, and then multiplying the result by 100.
Now, we are told that 29 of the students are girls. Thus;
Number of boys = 100 - 29 = 71 boys
Now, 9 of the girls like biology. Thus, this is;
9% of the total students
20 of the boys prefer physics and this in percentage is;
20% of the total students.
27 people prefer chemistry and this is;
27% of total students
Number of boys that prefer biology = 71 - (20 + 20) = 31
Thus;
Number of students that prefer biology = 29 + 31 = 60 students
This gives a percentage of 60% of the total students.
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I’m confused on this question
Answer:
C'(9,5)
Step-by-step explanation:
Left/Right = x-coordinateUp/Down = y-coordinateC(5,6)
Add or subtract how much you translate (move) left/right to the x-coordinate
Add or subtract how much you translate (move) up/down to the y-coordinate
C(5+x, 6+y) = C'
C(5+4, 6-1) = C'
C'(9,5)
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which of the following are binomials
A polynomial with two terms is called a binomial. For instance, the binomials x 2 x -2 x2 and x 6 x -6 x6 both exist.
How do you identify binomials?A single-term expression is referred to as a monomial, a two-term expression as a binomial, and a three-term expression as a trinomial. An expression's name is just its number of terms if it has more than three terms.
What is difference between monomial and binomial?Monomials have one term, binomials have two, trinomials have three, and polynomials have one or more terms.
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solve the value of x from 27^2x+2(1/81)^x+3
Step-by-step explanation:
200000000000+545-6678
write an equation in slope-intercept form that would have infinitely many solutions in a system of equations with 5x-2y=8
Answer:
y = 2.5x - 4--------------------------
The linear functions will have same or equivalent equations in order to have infinitely many solutions.
Convert the given to slope-intercept form, y = mx + b, to make it equivalent:
5x - 2y = 82y = 5x - 8y = 2.5x - 4Need help with these math problems
Answer:
number one is 4.5
Step-by-step explanation:
The diagram shows two different buttons and their weights.
8 grams
A
12 grams
B
The buttons are sold in bags.
Each bag contains 144 grams of buttons.
a) How many of button A are needed to fill one bag?
b) How many of button B are needed to fill one bag?
A box of buttons contains the same number of each type of button.
It contains 220g of buttons.
c)
How many of each type of button are in the box?
The number of buttons A will be equal to 11. And the number of buttons B will be equal to 11.
What is the solution to the equation?The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.
Given that container of buttons contains a similar number of each kind of button it contains 220g of buttons.
The weight of the button is given as follows;
Button A=8 grams
Button B = 12 Grams
Consider x be the number of each button. Then the equation is;
8x + 12x = 220
20x = 220
x = 11
The number of buttons A is 11. And the number of buttons B is 11.
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I need help with this!
Given: G = K, J = M, HJ = LM
Prove: GHJ = KLM
(I added a screenshot for clarification)
A bug starts at a vertex of an equilateral triangle. On each move, it randomly selects one of the two vertices where it is not currently located, and crawls along a side of the triangle to that vertex. Given that the probability that the bug moves to its starting vertex on its tenth move is m/n, where m and n are relatively prime positive integers, find m + n.
If the probability that the bug moves to its starting vertex on its tenth move is m/n , then the value of m+n is 683 .
In the question ,
it is given that ,
the bug starts from a vertex of an equilateral triangle , and
in each move , it randomly selects one of two vertices where it is not currently located .
Let the probability that the bug is at its starting vertex after n moves is Pₙ .
If the bug is on its starting vertex after n moves, then it must be not on its starting vertex after n-1 moves .
At this point it will has (1/2) chance of reaching starting vertex in the next move.
Thus Pₙ = (1/2)(1 - Pₙ₋₁) . P₀ =1 ,
So , the probabilities in each move can be written as
P₁ = 0 , P₂ = 1/2, P₃ = 1/4 , P₄ = 3/8 , P₅ = 5/16, P₆ = 11/32 , P₇ = 21/64 , P₈ = 43/128, P₉ = 85/256, P₁₀ = 171/512 ,
So , the tenth move P₁₀ is given as 171/512 , which is m/n .
So, m + n is = 171 + 512 = 683 .
Therefore , the value of m+n is = 683 .
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In the figure below, N is between M and O, and O is between N and P . If MP=16, NP=13 , and MO=9 , find NO.
NO= ?
MP = 16 ,, where NP = 13
therefore : MP - NP = MN <=> MN = 16 - 13 <=> MN = 3
MP = 16 ,, where MO = 9
therefore : MP - MO = OP <=> 16 - 9 = MO <=> MO = 7
MO = 7 & MN = 3
therefore : MO - MN = NO <=> NO = 7 - 3 <=> NO = 4
Which of the following is an example of A.S.A. criterion of congruency for two triangles ∠ACB and ∠DEF? a)AB = EF, ∠B = ∠E and ∠C = ∠F b)BC = EF, ∠B = ∠F and ∠C = ∠E c)AC = EF, ∠B = ∠D and ∠C = ∠F d)AC = DE, ∠B = ∠D and ∠C = ∠F
Under ASA criterion, Δ ACB ≅ ΔDEF, as ∠C = ∠E, ∠B = ∠F, and the side CB = EF.
What is ASA Congruence Rule?
ASA Congruence rule stands for Angle-Side-Angle. Under this rule, two triangles are said to be congruent if any two angles and the side included between them of one triangle are equal to the corresponding angles and the included side of the other triangle. Look at the image given below to determine if the two given triangles, Δ ABC and ΔXYZ are congruent by the ASA rule.
Hence , Under ASA criterion, Δ ACB ≅ ΔDEF, as ∠C = ∠E, ∠B = ∠F, and the side CB = EF. Since Δ ACB ≅ ΔDEF, then the third angle ∠A and the other two sides of Δ ACB are bound to be equal to the corresponding angle ∠D and the sides of ΔDEF.
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9y+4=7y+20
Please explain step by step to get marked as brainliest
Answer:
y=8
Step-by-step explanation:
9y-7y=20-4
2y=16
y=16/2
y=8
What is the slope of a line parallel to the line whose equation is
x + y = - 6. Fully simplify your answer.
Answer:
slope = -1
Step-by-step explanation:
⭐What is the slope of a line?
the coefficient of the x-variable[tex]y = mx + b[/tex]the m in the slope-intercept form equation⭐What is the slope of a line that is parallel to another line?
the slope of the parallel line is the same as the slope of the line it is parallel toTherefore, we can just find the slope of the given line and put that as our answer.
Before we do that, we need to rewrite the equation in slope-intercept form. ([tex]y = mx + b[/tex])
x + y = -6
To do so, subtract x from the LHS (left-hand side) and RHS (right-hand side) to isolate "y"
x + y -x = -6 -x
y = -x + 6
The slope is the coefficient of the x-variable.
-1 is the coefficient of the x-variable.
Therefore, -1 is the slope of this line.
Parallel lines have the same slope of the line they are parallel to.
Therefore, -1 is the slope of the line parallel to this line.
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Billy-Joe and Bob purchased a pool with a capacity of 60 gallons for his farm. One day, at 1 p.m., Billy-Joe placed a hose into the pool, filling it with water at a rate of 3 gal per hour. After 10 hours, horses and cows started drinking the water at a combined rate of 1 gal/hr. Five hours later, Bob noticed the animals drinking and placed a second hose in the pool which filled it at a rate of 2 gal/hr. At what time could Bob declare the pool was full of water?
At 9 AM Bob could declare the pool was full of water, using given information about fill rate, discharge rate and time.
What is fill rate and discharge rate ?
The definition of fill rate is the percentage of customers orders you are able to meet without running out of stock at any given time.
The discharge rate is the amount of fluid that is passing through a given cross sectional area per unit time.
We need to divide it in 3 parts:
Part 1: When only 1 hose is filling the pool at 3 gal per hr.
Part 2 : When after 10 hours animals started drinking water .
Part 3: When 2nd hose also started at the rate 2 gal per hr.
Part 1:
For 10 hours it get started . So, pool get filled is 30gal.
Part 2:
After 10 hours, rate decreased by animals at 1 gal/hour.
So, rate = 3-1 = 2 gal/hour.
So, water filled for 5 hour = 10 gal.
So, total pool is filled = 10 + 30 = 40 gal.
Remaining = 60 - 40 = 20 gal.
Part 3:
2nd hose is added at the rate 2gal/hour.
Now, rate = 2+2 = 4 gal/hour.
Time taken for 20 gal = 5 hours.
So, total time taken = 10 + 5 +5
= 20 hours.
We need to find the time ,
Time at which water is started = 1pm
1PM + 11hours = 12AM
For remaining , 9 hours
12AM + 9hours = 9AM.
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Find the measures of HAB and CAB
Answer:
AngleCAB = 44°
AngleHAB = 66°
Step-by-step explanation:
AngleEAF is a right angle, equal to 90°.
EH and DC are just two intersecting lines. They form a couple of pairs of vertical angles. Vertical angles are equal to each other. We'll use the vertical angles, AngleEAD and CAH.
Angle EAD and CAH are equal to each other.
EAD = CAH
90°+20° = 2x + 3x
Combine like terms.
110° = 5x
Divide by 5
110/5 = x
22 = x
Angle CAB
= 2x
= 2(22)
= 44
AngleCAB = 44°
AngleHAB
= 3x
= 3(22)
= 66
AngleHAB = 66°
Using the data below, calculate the correlation of these samples. Round your answer to 1 decimal place.
seed_mass seedling_height
5.06 7.91
5.06 7.25
5.5 7.29
5.91 8.91
5.6 6.93
4.54 6.65
6.6 8.47
4.79 5.87
6.15 9.18
5 6.14
5.77 6.34
4.33 5.22
5.38 6.7
4.25 6.22
5.41 6.29
5.01 5.66
6.26 6.73
5.07 6.56
5.5 5.89
5.23 7.14
4.24 5.48
5.89 8.36
5.32 6.56
5.56 6.04
4.95 6.97
As per the given data, the correlation is 0.7.
Correlation:
in statistics, correlation refers the association between two quantitative variables.
Given,
Here we have the table of data and now we need to find the correlation of the data.
As per the given data we have calculated the value of r as,
X Values
∑ = 132.38
Mean = 5.295
∑(X - Mx)² = SSₓ = 9.005
And the Y Values
∑ = 170.76
Mean = 6.83
∑(Y - My)² = SSₙ = 26.357
When the X and Y Combined
N = 25
∑(X - Mx)(Y - My) = 10.065
So, the R Calculation
r = ∑((X - My)(Y - Mx)) / √((SSₓ)(SSₙ))
r = 10.065 / √((9.005)(26.357)) = 0.6533
Then the Meta Numeric (cross-check)
r = 0.6533
When we round of these value then we get the value of the correlation as 0.7.
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What is 1.35 as a percentage? (1.35 as a percent) - Decimal
Answer:
135%
Step-by-step explanation:
multiply 1.35 to 100 or move the decimal point to the right 2 places
Consider the data set. 2, 3, 5, 6, 7. use the defining formula to compute the sample standard deviation s. (round your answer to two decimal places.)
The sample standard deviations of the data set 2, 3, 5, 6, 7 rounded up to 2 decimal spaces is 2.07.
The term "standard deviation" refers to a measurement of the data's dispersion from the mean. A low standard deviation implies that the data are grouped around the mean, whereas a large standard deviation shows that the data are more dispersed. Think about the following data: 2, 1, 3, 2, 4.
The average and the total square of the observations' departures from the mean will be 2.4 and 5.2, respectively. This means that (5.2/5) = 1.01 will be the standard deviation. The standard deviation reveals the degree of data skewedness. It gauges how far away from the mean each observed value is. Approximately 95% of values in any distribution will be within two standard deviations of the mean.
Number of data points (n)=5
Mean (x)= (2+3+5+6+7)/5= 4.6
Here x = 2, 3, 5, 6, 7
(x-x) = -2.6, -1.6, 0.4, 1.4, 2.4
[tex](x-X)^{2}[/tex] = 6.76, 2.56, 0.16, 1.96, 5.76
∑[tex](x-X)^{2}[/tex] = 17.2
Sample standard deviation :
[tex]\sqrt{\frac{(x-X)^{2}}{n-1} } \\\\\sqrt{\frac{17.2}{4} } \\\\[/tex]
= 2.07
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The half-life of Xe-133 is 5.25 days. How much will be left of 25g of the xenon after 11 days?
5.8525 grams out of 25 grams of xenon will be left after 11 days.
What is half-life?The amount of time needed for an isotope's radioactivity to decrease to 50% of its initial value.
The given data is
T1/2=5.25 days.
No=25g
T=11 days
We'll have to find the disintegration constant first.
The formula for finding it is
T½ = In2 / λ
T½ = half-life
λ = disintegration constant
λ = In2 / T½
λ = 0.693 / 5.25
λ = 0.132
In(N / No) = -λt
where,
N = final mass of the radioactive sample
No = initial mass of the sample
λ = disintegration constant
t = time for the radioactive decay
In(N/No) = -λt
N / No = e^-λt
N = No(e^-λt)
N = 25 × e^-(0.132 × 11)
N=5.8525 g.
Therefore 5.8525 grams of Xe-133 will be left after 11 days.
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At Kamari's Sweet Treats, cookies are packaged in boxes of 8. Depending on the cookie flavor, the most a box can cost is $16.
Let x represent how much each cookie costs. Which inequality describes the problem.
a x / 8 < 16
b 8 + x ≥ 16
c 8 x ≤ 16
d x − 8 ≤ 16
The inequality that describes the problem is C. 8x ≤ 16
Which inequality describes the problem?Inequalities are created through the connection of two expressions. It should be noted that the expressions in an inequality aren't always equal. Inequalities implies that the expressions are not equal. They are denoted by the symbols ≥ < > ≤.
Since Kamari's Sweet Treats, cookies are packaged in boxes of 8 and the most a box can cost is $16. This will be:
8x ≤ 16
The correct option is C.
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Three long wires (wire 1 wire 2 and wire 3 ) hang vertically. The distance between wire 1 and wire 2 is 23.0 cm On the left, wire 1 carries an upward current of 1.50 A. To the right, wire 2 carries a downward current of 3.60 A. Wire 3 is to be located such that when it carries a certain current, each wire experiences no net force. (a) Is this situation possible? Is it possible in more than one way? Describe (b) the position of wire 3 and the magnitude and direction of the current in wire 3.
Based on the combination technique,
1. The position of wire 3
2. The magnitude and direction of current in wire 3
Combination method:
In statistics, the mathematical technique that determines the number of possible arrangements in a collection of items where the order of the selection does not matter is know a combination method.
Given,
Here we have the three long wires hang vertically. The distance between wire 1 and wire 2 is 23.0 cm On the left, wire 1 carries an upward current of 1.50 A. To the right, wire 2 carries a downward current of 3.60 A. Wire 3 is to be located such that when it carries a certain current, each wire experiences no net force.
And now we need to find the position of wire 3 and the magnitude and direction of the current in wire 3.
As per the given question, we know that the
=> Current in wire 1, i1 =1.2A upward
=> Current in wire 2, i2=5A downward
And the distance between wire 1 and 2 is calculated is
=> 20cm = 0.2m
Here the current is calculated as
=> F/l = μo•i1•i3/2πx
So,
=> F/l=6×10⁻⁶N/m
=> 6×10⁻⁶ = μo•i1•i3/2πx
=> 6×10⁻⁶ =4π×10⁻⁷×1.2×i3/(2π×0.0632)
When we do Cross multiply,
=> 6×10⁻⁶×2π0.0632=4π×10⁻⁷×1.2×i3
=> 2.383×10⁻⁶=4π×10⁻⁷×1.2×i3
=> i3= (2.383×10⁻⁶)/(4π×10⁻⁷×1.2)
Therefore, i3= 1.58A and it's direction is downward.
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The production costs, P , for a band to have a concert can be modeled by the equation P=850+5x , where x is the number of concert tickets sold. The band earns $50 for each ticket sold. The band’s goal is for the amount earned on ticket sales minus production costs to equal $5,000 per concert. How many tickets does the band have to sell for each concert to meet the goal?
The number of tickets that the band have to sell for each concert to meet the goal is 76 tickets
How many tickets does the band have to sell for each concert to meet the goal?Based on the information given, the production costs, P , for a band to have a concert can be modeled by the equation P=850 + 5x.
x = the number of concert tickets sold.
Since the band earns $50 for each ticket sold. The band’s goal is for the amount earned on ticket sales minus production costs to equal $5,000 per concert.
This will be illustrated thus:
Revenue - Cost = Profit
50x - 850 + 5x = 5000
Collect like terms
55x = 5000 - 850
55x = 4150
Divide
x = 4150 / 55
x = 76
The tickets will be 76.
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0.4(20 - 10m) = 2.5 - 2m - 12.5 solve for m show your work
m= 9.
Step-by-step explanation:1. Write the expression.[tex]0.4(20 - 10m) = 2.5 - 2m - 12.5[/tex]
2. Apply the distributive property of multiplication on the left hand side of the equation.[tex](0.4)(20)-(0.4)(10m)= 2.5 - 2m - 12.5\\ \\(8)-(4m)= 2.5 - 2m - 12.5\\ \\8-4m= 2.5 - 2m - 12.5[/tex]
3. Subtract 8 from both sides of the equation.[tex]8-4m-8= 2.5 - 2m - 12.5-8\\ \\-4m=2.5-2m-20.5\\ \\-4m=-2m-18[/tex]
4. Add "2m" from both sides.[tex]-4m+2m=-2m-18+2m\\ \\-2m=-18[/tex]
5. Divide both sides by "-2".[tex]\frac{-2m}{-2} =\frac{-18}{-2} \\ \\m=9[/tex]
6. Verify the answer by substituting the calculated value of m into the original equation and simplifying.[tex]0.4(20 - 10(9)) = 2.5 - 2(9) - 12.5\\\\0.4(20 - (90)) = 2.5 - (18) - 12.5\\ \\0.4(-70) = -28\\ \\-28=-28[/tex]
That's correct. Therefore, m= 9 is the correct answer!
let $abc$ be an acute triangle satisfying the conditions $ab > bc$ and $ac > bc$. denote by $o$ and $h$ the circumcenter and orthocenter, respectively, of the triangle $abc$. suppose that the circumcircle of the triangle $ahc$ intersects the line $ab$ at $m$ different from $a$, and the circumcircle of the triangle $ahb$ intersects the line $ac$ at $n$ different from $a$. prove that the circumcenter of the triangle $mnh$ lies on the line $oh$.
In an acute triangle, the circumcenter of the triangle lies on the line O.
Acute triangle.
In geomentry, acute triangle is the type of triangle in which all the three internal angles of the triangle are acute
Given,
Here we need to prove that in the acute triangle ABC, the circumcenter of the triangle MNH lies on the line OH.
Let us consider T be the intersection of σ1 and σ1 other than W.
Now, the Lemma 1: T is on XY.
Now, the Proof is written as We have ∠XTW} = ∠YTW = 90 degres because they intercept semicircles.
Therefore, ∠XTY = ∠XTW + ∠YTW = 180 degrees,
Then XTY is a straight line.
Here we know that NHLB is cyclic because ∠BNH and ∠BLH, opposite and right angles, sum to 180 degree. Furthermore, we are given that NTWB is cyclic.
Therefore, the triangle MNH lies on the line OH.
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Which of the following could represent the cost of 7 t-shirts and a $6 tax?A 7n + 6
B 7n − 6
C n + 6(7)
D 7(6) + n
The expression that could represent the cost of 7 t-shirts and a $6 tax is (a) 7n + 6
How to determine the expression?From the question, we have the following parameters that can be used in our computation:
Number of shirts = 7
Tax = $6
Represent the cost of each shirt with n
So, we have the following equation
Total cost = Number of shirts * Cost of each shirt + Tax
Substitute the known values in the above equation, so, we have the following representation
Total cost = 7 * n + 6
Evaluate
Total cost = 7n + 6
Hence, the expression is (a) 7n + 6
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What is the prime factorization of 252?; What is the prime factorization of 50?; How do you find the prime factorization on a calculator?; What are the prime numbers for 52?
Using prime numbers and evaluating the factors of the given number, The prime factorization of 252 is 2 x 2 x 3 x 3 x 7. The prime factorization of 50 is 2 x 5 x 5. We can directly calculate the prime factorization using a calculator. Prime numbers for 52 is 2 and 13.
What do you mean by prime number?A natural number higher than 1 that is not the product of two smaller natural numbers is referred to as a prime number (or a prime).
What are the factors of a number?Numbers that split an original number evenly or precisely are known as its factors. A factor is a whole number that can divide a larger number in two equal halves.
Prime factors of 252= 2 x 2 x 3 x 3 x 7
Prime factors of 50 = 2 x 5 x 5
Prime factors of 52 = 2 x 2 x 13
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A 6 inch personal pizza has 610 calories, with 240 of those from fat. A 12 inch pizza is cut into 8 slices. Estimate the number of calories in one slice of a 12 inch pizza.
A circle's area goes up with the square of its radius (A = πr2). Since the 12-inch pizza has twice the radius of the six-inch pizza it has 22 = 4 times the area. In addition, since the 12-inch pizza is then cut into 8 slices, each slice has 4/8 = 1/2 times the area of the 6-inch pizza, so each slice has approximately 1/2*610 = 305 calories.
If the 12 inch pizza is cut into 8 (equal) slices, the number of calories in one slice is 2440/8 = 305.
"Information available from the question"
In the question:
A 6 inch personal pizza has 610 calories, with 240 of those from fat. A 12 inch pizza is cut into 8 slices.
Estimate the number of calories in one slice of a 12 inch pizza.
Now, According to the question:
The 6 inches and 12 inches are the diameters of the two pizzas.
Consider the two pizzas as similar figures with a ratio of similarity of 2:1. By a basic geometric principle, the ratio of the areas of the two pizzas is the square of that ratio. So the area of the 12 inch pizza is 2^2=4 times the area of the 6 inch pizza.
The number of calories in the 6 inch pizza is 610.
The number of calories in the 12 inch pizza is 610 x 4 = 2440.
Hence, If the 12 inch pizza is cut into 8 (equal) slices, the number of calories in one slice is 2440/8 = 305.
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2x+2y=10 slope intercept equation
Answer:
y = -x + 5
Step-by-step explanation:
2x+2y=10 slope intercept equation
2x+2y=10
subtract 2x from both sides:
2y = 10 - 2x
rearrange right side:
2y = - 2x + 10
divide all terms by 2:
y = -x + 5
Answer:
Step-by-step explanation:
5 over 2