Answer:
am pretty sure it is the second one my guy
Prove: The difference of the reciprocals
of two successive integers equals the
product of their reciprocals.
1
1
-
n
n + 1
[?]
n(n + 1)
[ ].[
n n+1
Step-by-step explanation:
let two successive integers n, n+1
difference of the reciprocals:
[tex]\frac{1}{n}-\frac{1}{n+1} \\=\frac{(n+1)-n}{(n)(n+1)}\\=\frac{1}{(n)(n+1)}\\=\frac{1}{(n)}\frac{1}{(n+1)}\\[/tex]
Highly confused on this problem
Element X is a radioactive isotope such that every 13 years, its mass decreases by half. Given that the initial mass of a sample of Element X is 8800 grams, how much of the element would remain after 25 years, to the nearest whole number?
Please help this is due TODAY
Calculate the unknown variable value .
Do not answer with a one answer, blank or a ridiculous answer please this is serious.
Answer:
a=116.5°
b=116.5°
Step-by-step explanation:
360-95-32=233
233÷2=116.5
a and c are equal, so both are 116.5
Find the length of segment VM, if the length of segment NT = 14, segment MU = 8 and segment VT =
42.
Answer: VM = 16
Step-by-step explanation:
Children 12 and under eat free at a local restaurant. If x represents age, write an inequality to represent people who do not get a discount.
Answer:
< could be it (●'◡'●)
Step-by-step explanation:
Please help I’ll give you points! And mark you BRAINLY!!
Answer:
The answer = (-5,3)
Step-by-step explanation:
your welcome
Answer:
Point form: (-5,3)
Equation form: x=-5 y=3
Step-by-step explanation: Hope it helps ;)
I’ll give brainliest, i need to know the math done to get the answer. Need answers ASAP !!
Answer:
Approximately $242,000
Kash bought 6 notebooks for $15.00. How many notebooks can his sister buy with $10.00?
Answer:
4
Step-by-step explanation:
Making this problem into a proportion we get:
6/$15 = x/$10
Cross multiply 10 and 6, we get 60. Now divide that by 15, you get 4.
You and a friend go to Tacos Galore for lunch. You order three soft tacos and five burritos and your total bill is $17.75. Your friend orders four soft tacos and two burritos and paid $12.00.
Answer:
Step-by-step explanation:
let tacos be x and burritos be y
so, your 1st eqn. is 3x + 5y = 17.75
2nd eqn. is 4x+ 2y = 12
Solving the 2 eqns: Multiply eqn 1 with 2 and eqn 2 with 5
So: 6x+10y=35.5
-20x-10y=-60
=-14x=-24.5
x=24.5/14 = 1.75
Substituting the value of x in eqn 1 : (3*1.75)+5y=17.75
y = 2.5
Kenji is playing the video game Dragon Tamer, where players go on adventures finding and training dragons. In the first level of the game, he gets 10 points for finding a Silverthorn Dragon but gets
–
6 points when it scorches him with fire.
I really need point
Please help and this is easy?!?
Answer: You are correct.
Step-by-step explanation: If you changed the amount of seats then it would effect the amount of tickets sold
I need this answer fast pls help
Add the words that complete the thought in the underlined sentence
Of the artwork would be the best answer because the context clue of Main Street!
Answer:
Of the artwork
Step-by-step explanation:
I got it right on the quiz
2 cot^2t sin t - cot^2t = 0
2 cot²(t ) sin(t ) - cot²(t ) = 0
cot²(t ) (2 sin(t ) - 1) = 0
cot²(t ) = 0 or 2 sin(t ) - 1 = 0
cot(t ) = 0 or sin(t ) = 1/2
cos(t ) / sin(t ) = 0 or sin(t ) = 1/2
cos(t ) = 0 or sin(t ) = 1/2
[t = cos⁻¹(0) + 2nπ or t = cos⁻¹(0) - π + 2nπ]
or [t = sin⁻¹(1/2) + 2nπ or t = π - sin⁻¹(1/2) + 2nπ]
(where n is any integer)
t = π/2 + 2nπ or t = -π/2 + 2nπ or t = π/6 + 2nπ or t = 5π/6 + 2nπ
Note that the first two families of solutions overlap and can be condensed, so that
t = π/2 + nπ or t = π/6 + 2nπ or t = 5π/6 + 2nπ
Find the volume of the solid obtained by rotating the region bounded by the given curves about the x-axis.
y = 3 − 3x^2, y = 0
Answer: [tex]9.6\pi[/tex]
Step-by-step explanation:
Given
Curve is [tex]y=3-3x^2[/tex]
boundary is y=0 i.e.
[tex]\Rightarrow 0=3-3x^2\\\Rightarrow x^2=1\\\Rightarrow x=\pm 1[/tex]
The volume of solid generated when rotated about the x-axis is
[tex]\Rightarrow V=\int_a^b\pi y^2dx[/tex]
Putting values we get
[tex]\Rightarrow V=\int_{-1}^{1}\pi (3-3x^2)^2dx\\\\\Rightarrow V=\int_{-1}^{1}\pi(9+9x^4-18x^2)dx\\\\\Rightarrow V=\pi \left [ \frac{9x^5}{5} - 6 x^3 + 9 x\right ]_{-1}^{1}\\\\\Rightarrow V=9.6\pi[/tex]
13 yd
5 yd
11 yd
9 yd
6 yd
BE
?
Answer:
? measures (13 - 9) or 4 yards
Step-by-step explanation:
Talia grouped the terms and factored out the GCF of the groups of the polynomial 15x2 – 3x – 20x + 4. Her work is shown below.
(15x2 – 3x) + (–20x + 4)
3x(5x – 1) + 4(–5x + 1)
Talia noticed that she does not have a common factor. What should she do?
Talia needs to leave the polynomial as is because it is prime and cannot be factored.
Talia needs to group the terms differently.
Talia needs to factor out a negative from one of the groups so the binomials will be the same.
Talia needs to apply the distributive property to get the expression (3x + 4)(5x – 1).
Answer:
Talia needs to factor -1 out of one of the two binomials
Step-by-step explanation:
She could take:
3x(5x - 1) + 4(-5x + 1)
and rewrite it as:
3x(5x - 1) - 4(5x - 1)
= (3x - 4)(5x - 1)
Answer:
The answere is C.
Step-by-step explanation:
It is right on edge
Find The Slope Of The Line.
1/3
3/1
6/2
-3/1
y=-0.011x+40.604y = − 0.011 x + 40.604
1) What is the slope of the line in the scatter plot?
2) What is the meaning of the slope in that situation?
Answer:
0.11×11%×40.60%×4=0.11×+40%.604
The cube root of a number is 2. Write an equation, using x, that represents this situation.
Answer:
x - 8 = 0
Step-by-step explanation:
Since, the cube root of a number is 2.
Let the number be x.
Therefore,
[tex] \sqrt[3]{x} = 2 \\ cubing \: both \: sides \\ {( \sqrt[3]{x})}^{3} = {(2)}^{3} \\ x = 8 \\ x - 8 = 0[/tex]
A right cone has a slant height of 6 and a radius of 4. What is its surface
area?
A. 40 units^2
B. 56 units^2
C. 24 units^2
D. 16 units^2
The surface area of the cone is 16π square units.
What is the surface area of the cone?The surface area of the cone is given by;
⇒ Area = πrl + πr²
Here, We have;
A right cone has a slant height of 6 and a radius of 2.
Substitute all the values in the formula
⇒ Area = πrl + πr²
⇒ Area = π x 2 x 6 + π x 2²
⇒ Area = 16π
Hence, The surface area of the cone is 16π square units.
Learn more about the surface area here;
brainly.com/question/2835293
#SPJ5
the reason physical state affect the rate of a chemical rection
Answer:
Usually reactions speed up with increasing temperature. Physical state of reactants. Powders react faster than blocks - greater surface area and since the reaction occurs at the surface we get a faster rate. The presence (and concentration/physical form) of a catalyst (or inhibitor).
Step-by-step explanation:
(2x -5) - 1.75(x+4) simplify
Step-by-step explanation:
=0.25x-12 I hope this helped:)
Answer:
0.25x−12
Step-by-step explanation:
(2x−5)−1.75(x+4)
Use the distributive property to multiply −1.75 by x+4.
2x−5−1.75x−7
Combine 2x and −1.75x to get 0.25x.
0.25x−5−7
Subtract 7 from −5 to get −12.
0.25x−12
Mr. D'Angelo hired a painter to paint the outside of his house green. The painter must mix 3 gallons of blue paint with every 5 gallons of yellow paint in order to make the correct shade of green paint. Which ratio of gallons of blue paint to gallons of yellow paint will make the correct shade of green paint?
Answer:
[tex]\frac{3}{5}[/tex]
Step-by-step explanation:
3 gallons of blue paint and 5 gallons of yellow paint and this answer is a fraction so [tex]\frac{3}{5}[/tex] is the answer.
Which of the following is the solution to the differential equation dy/dx=2xy/x^2+1 whose graph contains the points (0,1)?
A. y=ex^2
B. y=x^2+1
C. y=ln(x^2+1)
D. y=1+ln(x^2+1)
E. y=sqrt(1+2ln(x^2+1))
Answer:
B. y = x² + 1
General Formulas and Concepts:
Symbols
e (Euler's number) ≈ 2.7182Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of EqualityAlgebra I
FunctionsAlgebra II
Logarithms - ln and eCalculus
Derivatives
Derivative Notation
Derivative of a constant is 0
Basic Power Rule:
f(x) = cxⁿ f’(x) = c·nxⁿ⁻¹Slope Fields
Solving Differentials - Integrals
Integration Constant C
U-Substitution
ln Integration: [tex]\displaystyle \int {\frac{1}{x}} \, dx = ln|x| + C[/tex]
Step-by-step explanation:
*Note:
When solving differential equations in slope fields, disregard the integration constant C for variable y.
Step 1: Define
[tex]\displaystyle \frac{dy}{dx} = \frac{2xy}{x^2 + 1}[/tex]
Point (0, 1)
Step 2: Rewrite Differential
Rewrite Leibniz Notation using Separation of Variables.
[Separation of Variables] Isolate x's together: [tex]\displaystyle dy = \frac{2xy}{x^2 + 1}dx[/tex][Separation of Variables] Isolate y's together: [tex]\displaystyle \frac{1}{y}dy = \frac{2x}{x^2 + 1}dx[/tex]Step 3: Integrate Pt. 1
Solving general form of differential using integration.
[Differential] Integrate both sides: [tex]\displaystyle \int {\frac{1}{y}} \, dy = \int {\frac{2x}{x^2 + 1}} \, dx[/tex][Left Integral] ln Integration: [tex]\displaystyle ln|y| = \int {\frac{2x}{x^2 + 1}} \, dx[/tex]Step 4: Identify Variables
Set up u-substitution for right integral.
u = x² + 1
du = 2xdx
Step 5: Integrate Pt. 2
[Right Integral] U-Substitution: [tex]\displaystyle ln|y| = \int {\frac{1}{u}} \, du[/tex][Right Integral] ln Integration: [tex]\displaystyle ln|y| = ln|u| + C[/tex]Back-Substitute: [tex]\displaystyle ln|y| = ln|x^2 + 1| + C[/tex][Equality Property] Raise e on both sides: [tex]\displaystyle e^{ln|y|} = e^{ln|x^2 + 1| + C}[/tex]Simplify: [tex]\displaystyle |y| = C|x^2 + 1|[/tex]General Form: [tex]\displaystyle |y| = C|x^2 + 1|[/tex]
Step 6: Solve Particular Solution
Since both sides have absolute value, assume that the particular solution will be positive.
Substitute in point [General Form]: [tex]\displaystyle |1| = C|(0)^2 + 1|[/tex][Particular] |Absolute Value| Evaluate exponents: [tex]\displaystyle |1| = C|1|[/tex][Particular] Evaluate absolute values: [tex]\displaystyle 1 = C[/tex][Particular] Rewrite: [tex]\displaystyle C = 1[/tex]Substituting integration constant C into the general form:
Particular Solution: [tex]\displaystyle y = x^2 + 1[/tex]
Topic: AP Calculus AB/BC (Calculus I/II)
Unit: Differentials and Slope Fields
Book: College Calculus 10e
What is d?
2/3 x d = 40
Answer:
60
Step-by-step explanation:
2/3*d=40
d=40*3/2
d=60
help meh plsssssssccsa
Answer:
I think 235.5 mm cubed
Step-by-step explanation:
The formula for the volume of a cone is V=1/3hπr².
1/3 x 9 x π x 5² =
1/3 x 9π x 25 =
1/3 x 225π =
75π
let's say π=3.14
75 x 3.14 = 235.5
A family picture is 4 in wide and 6 in long. The photographer is going to enlarge the photo to be 9 in. long.
How wide wil the enlarged choto be?
Enter your answer the box
Determine if the ordered pair (-2, -4) is a solution of
5x - 2y = -2.
Show ALL your work here