Prove that the convergence or divergence of series is not affected by multiplying each term by the same non-zero constant
Answer:
Suppose that we have a converging series like:
(a₁ + a₂ + a₃ + ... ) = A
or
∑aₙ = A
So this series converges to the value A.
Now, let's multiply all the coefficients by a real number c, different than zero, then the sum is:
(c*a₁ + c*a₂ + c*a₃ + ...)
now we can take the common factor c out, to get:
c*(a₁ + a₂ + a₃ + ...)
And the thing inside the parentheses is equal to A, then we have:
c*(a₁ + a₂ + a₃ + ...) = c*A
So the series still converges for any value of c.
Now, suppose that this series diverges (to minus infinity or infinity)
Then we have:
(b₁ + b₂ + b₃ + ...) = ∞
Same as before, we multiply all the terms by the same number c:
(c*b₁ + c*b₂ + c*b₃ + ...)
again, we take the common factor out:
c*(b₁ + b₂ + b₃ + ...)
And same as before, we get:
c*(b₁ + b₂ + b₃ + ...) = c*∞
and c*∞ is still equal to ∞ (or -∞ if c is negative), so the series still diverges.
Find the solution set of the inequality: -3x + 8 < 15−3x+8<15minus, 3, x, plus, 8, is less than, 15 x
Answer:
The solution to the inequality is;
x > -7/3
Step-by-step explanation:
We want to find the solution to the inequality;
-3x + 8 < 15
We can have this as;
-3x < 15-8
-3x < 7
x > -7/3
Answer:
x>-7/3
Step-by-step explanation:
A local animal rescue recieved a number of $10 donations for its annual drive. Suppose the total of the donations reached $930.What equation applies to this situation
Two angles are complementary. Angle 1 has a measure of
3x + 14 and Angle 2 has a measure of 4x + 6. What is the
value of x?
Answer:
x = 10
Step-by-step explanation:
3x + 14 + 4x + 6 = 90
7x + 20 = 90
90 - 20 = 70
70 / 7 = 10
x = 10
z2 − 2 = 0 using the quadratic formula
Two solutions were found :
1. z = 2
2. z = -1
Step-by-step explanation:
Using a number that can be divided into both the numerator and denominator, find an equivalent fraction for this fraction. 4/6 answers 1/2 or 2/3 or 1/3 if u put a random i will report you thanks
Given:
The fraction is [tex]\dfrac{4}{6}[/tex].
To find:
The equivalent fraction.
Solution:
We have,
[tex]\dfrac{4}{6}[/tex]
Here, the numerator is 4 and denominator is 6. Both are even numbers, so they can be divisible by 2.
Divide numerator and denominator by 2.
[tex]\dfrac{4}{6}=\dfrac{\dfrac{4}{2}}{\dfrac{6}{2}}[/tex]
[tex]\dfrac{4}{6}=\dfrac{2}{3}[/tex]
[tex]\dfrac{4}{6}\equiv \dfrac{2}{3}[/tex]
So, the given fraction is equivalent to [tex]\dfrac{2}{3}[/tex].
Therefore, the correct option is B.
8a-6/2a-3 what is the equivalent to
Answer: 22a9
Step-by-step explanation:
Lily is preheating her oven before using it to bake. The initial temperature of the oven
is 75° and the temperature will increase at a rate of 15° per minute after being turned
on. What is the temperature of the oven 20 minutes after being turned on? What is
the temperature of the oven t minutes after being turned on?
Answer:
10 minuets 225
20 minuets 375
Step-by-step explanation:
What is the ratio for writing utensils to school supplies?
Answer:
writing utensils= 16
School supplies=20
16:20
4:5 simplified
TRICKY (一_一)
PLEASE HELP ASAP!! THANK YOU!
187373828282746282847828274737282
Nancy has a $86 entertainment budget per month. Going
to a movie costs $8, eating out costs $31, and concerts are
$55 each. Can Nancy go to a movie, eat out, and go to a
concert in the same month and still stay within budget?
A. Yes, and Nancy saves $0.
B. Yes, and Nancy saves $8
C. Cannot tell.
D. No.
17cm
9cm
6cm
7cm
3cm
15cm
What is the area of this figure?
Answer:
Step-by-step explanation:
57cm²
Mari spends $6 on cheese for a party she also plans to buy b boxes of crackers that cost $3 per box
Answer:
6+3b=x
Step-by-step explanation:
The total amount of money spend on crackers and cheese is given by the inequality 3b + 6 ≤ 15
What is an Inequality Equation?Inequalities are the mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.
In an inequality, the two expressions are not necessarily equal which is indicated by the symbols: >, <, ≤ or ≥.
Given data ,
Let the inequality equation be represented as A
Now , the value of A is
Substituting the values in the equation , we get
Let the amount spend on cheese be = $ 6
The number of boxes of crackers = b
The cost of one box of crackers = $ 3
So , the total amount for b box of crackers = 3b
The maximum amount of money that can be spend = $ 15
And , total amount of money spend on crackers and cheese is
3b + 6 ≤ 15
Subtracting 6 on both sides , we get
3b ≤ 9
Divide by 3 on both sides , we get
b ≤ 3 boxes
Therefore , the value of b is 3 boxes
Hence , the inequality is 3b + 6 ≤ 15
To learn more about inequality equations click :
https://brainly.com/question/11897796
#SPJ3
The complete question is :
Mari spends $6 on cheese for a party she also plans to buy b boxes of crackers that cost $3 per box.Which inequality shows that Mari wants to spend at most $15 on cheese and crackers for the party?
You are the basketball team captain and T-shirts are to be ordered for your season. T-shirts with a number on the back cost $12. T-shirts with a name and number cost $16. You have $240 to spend on T-shirts for the team.
The equation 12x + 16y = 240 models the total cost, where x is t-shirts with a number on the back and y is t-shirts with a name and number on the back.
There are 12 members of the team who want their names and numbers on the back of their T-shirts. How many members will order a T-shirt with just their number on the back?
Answer:
20 12cost and the the rest 16
Step-by-step explanation:
please help i’ll give brainliest
True or False: No matter which factors you start with, you will always end up with the same numbers in the end using prime factorization?
Answer:
True
Step-by-step explanation:
In Prime factorization, we are expected to obtain factors that are prime numbers that can multiply themselves to give the original number. So long as the first factor can divide the number without a remainder, other remaining factors can be multiplied together to give the original number.
Prime factorization of the number, 15 goes thus;
15/3=5
5/5=1
3*5=15
So, all the factors multiply to give the original number.
50 points for answer.
Three vertices of parallelogram ABCD are A(2,6), B(2,2) and D(4,4). Find the coordinates of the remaining vertex.
Answer:
Point C: (4, 0)
Step-by-step explanation:
Parallelograms are quadrilaterals with two pairs of parallel sides, this means they will have the same slope between two line segments.
point slope form between two points: y - y1 = m (x - x1)
point A (2, 6) and D (4,4):
slope: point form, 6 - 4 = m(2 - 4)
2 = -2m
m (slope) = [tex]\frac {2}{-2}[/tex] = [tex]\frac {Change in X position}{ Change in Y position}[/tex]
now that you know the change in position, apply this to vertice B to get the position of the final vertice.
B(2, 2)
C (2 +2, 2-2) = C(4, 0)
The final position of C vertice for parrallelogram A(2,6), B(2,2), D(4,4) will be C(4,0)
Find the measure of angle ABC
Answer:
x = 9
Step-by-step explanation:
To answer this equation We have to find the value of x so that and A, B, and C add up to 180. Since angle A and C are both 6x that means the number of those angles are the same. Therefore the equation for this problem is:
180 = 6x + 6x + 8x
Now substituting 9 in for the x values;
180 = 6(9) + 6(9) + 8(9)
180 = 54 + 54 + 72
180 = 180
Which is equivalent to 80 IH 1 Save and Exit
Answer:
[tex] \huge {80}^{ \frac{1}{4}x } = \boxed{\sqrt[4]{ {80}}^{x}}✓[/tex]
2nd one is the right answer.
This is exponential growth and decay
Given:
In 1999, the number of mosquitos = 2500
They tripled every year.
To find:
The model for this situation and find the number of mosquitos in 2005.
Solution:
The general exponential modal is
[tex]y=ab^x[/tex] ...(i)
Where, a is the initial value and 0<b<1 is decay factor and b>1 is growth factor.
In 1999, the number of mosquitos is 2500.
Initial value: [tex]a=2500[/tex]
They tripled every year. So, growth factor is 3>1 and it is exponential growth.
Growth factor: [tex]b=3[/tex]
Putting [tex]a=2500[/tex] and [tex]b=3[/tex] in (i), we get
[tex]y=2500(3)^x[/tex] ...(ii)
Here, y is the population of mosquitos after x year of 1999.
Therefore, the required exponential growth modal is [tex]y=2500(3)^x[/tex].
We know that,
[tex]2005-1999=6[/tex]
Putting x=6 in (ii), we get
[tex]y=2500(3)^6[/tex]
[tex]y=2500(729)[/tex]
[tex]y=1822500[/tex]
Therefore, the estimated number of mosquitos in 2005 is 1822500.
PLS ANSSWEWEEERRR ITS TIMED...
btw the second screenshot has c. and d. the first has a. and b.
Answer: D
Step-by-step explanation:
Every hour, a runner is able to run the same number of miles. If on his 3rd hour of running he has gone 15 miles, and on his 5th hour of running he has gone 25 miles, what is the rate at which he runs?
Step-by-step explanation:
15 miles / 3 hours = 5 miles per hour.
25 miles / 5 hours = 5 miles per hour.
The runner runs at 5 miles per hour.
In the school band, 3/5 of the students play the trumpet. Of these, 1/6 also play the trombone. What fraction of the students in the band play both trumpet and trombone?
4/7
Step-by-step explanation:
if you turn them into percentage you can get what I just got by doing that cross multiple
What's the line's slope
Answer:
y= -x
or
y= -1x
Step-by-step explanation:
hope it helps :)
number three. help me please. its Tx historyy
Answer:
D.
Step-by-step explanation:
The idea of Manifest Destiny arose in response to the prospect of U.S. annexation of Texas and to a dispute with Britain over the Oregon Country, which became part of the union.
Answer:
D. Annexation of Texas.
Step-by-step explanation:
Remember from the previous answer, the Manifest Destiny was the "justifiable source" in the expansion of the US westward. What is not known as Texas, was part of the Manifest Destiny. During this time, the Mexican Government allowed for US citizens to populate the lands that stretch from Texas to parts of California. However, it is important to note that they did not allow slavery, which is a large factor in the Texas Independence. With the independence of Texas, and the annexation of Texas from the Republic of Texas to the state of Texas, the US added a large sizable chunk to it's borders, further expanding the US in the southwest sector.
~
what is the value of ?
HELP PLEASEEE !
Answer:
30
Step-by-step explanation:
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WILL MARK BRAINLIEST AND 15 POINTS
Answer:
x = 4
Step-by-step explanation:
You may want to make everything into the same fraction to make the math easier. Because x/4 is the smallest fraction, make all of the other numbers with x match it.
3x = 12x/4, x/2 = 2x/4.
Now, 12x/4 - x/4 = 11x/4.
11x/4 + 9 = 1 - 2x/4 - 5. Now add x to one side to solve x.
13x/4 +9 = 1 - 5
13x/4 + 9 = -4
13x/4 = -13 (multiply by four on each side)
13x = -52
x = 4
Answer: x=-4
Step-by-step explanation:
Solve the following equation:
8(x - 4) = 4(x - 7)
Answer: = 1
Step-by-step explanation:
Answer:
x=1
Step-by-step explanation:
8(x-4)=4(x-7)
we can expand the brackets
8x-32=4x-28
8x-4x=-28+32
4x=4
x=1
y=6x-8 solve in system of equations using the method substitution
The number of cartons of apples sold at a store each day for eight days is shown. 30 , 40 , 51 , 30 , 34 , 20, 30, 45 Determine the value for each statistical measure. 2. The number of fifth graders buying lunch each day for nine days is shown. 90 , 72 , 48 , 84 , 77 , 72, 50, 83 Determine the value for each statistical measure. Mean Median Mode Range 30 31 35 32
Answer:
Mean = 35
Median = 0.5(n + 1)th term
Median = 0.5(9) = 4.5th term
(30 + 34) /2 = 32
Mode = 30 ( most frequent)
Range = (51 - 20) = 31
Mean = 72
Median = 0.5(n + 1)th term
Median = 0.5(9) = 4.5th term
4th + 5term = (72 + 77) /2 = 74.5
Mode = 72 ( most frequent)
Range = (90 - 48) = 42
Step-by-step explanation:
Given :
1.)
Data: 30 , 40 , 51 , 30 , 34 , 20, 30, 45
Rearranged data : 20, 30, 30, 30, 34, 40, 45, 51
Mean = ΣX / n = 280 / 8
Mean = 35
Median = 0.5(n + 1)th term
Median = 0.5(9) = 4.5th term
(30 + 34) /2 = 32
Mode = 30 ( most frequent)
Range = (51 - 20) = 31
2.)
90 , 72 , 48 , 84 , 77 , 72, 50, 83
Rearranged data : 48, 50, 72, 72, 77, 83, 84, 90
Mean (m) = ΣX / n = 576 / 8
Mean = 72
Median = 0.5(n + 1)th term
Median = 0.5(9) = 4.5th term
4th + 5term = (72 + 77) /2 = 74.5
Mode = 72 ( most frequent)
Range = (90 - 48) = 42