That is very true.
In mathematics, an inverse operation is an operation that undoes what was done by the previous operation. The four main mathematical operations are addition, subtraction, multiplication, division. The inverse of addition is subtraction and vice versa. The inverse of multiplication is division and vice versa.
Addition and subtraction are indeed inverse operations. They are algebraic operations that do the opposite of one another and can thus 'undo' each other's effects.
Explanation:The statement that Addition and subtraction are inverse operations is indeed true. In mathematics, an inverse operation is an operation that undoes what was done by the previous operation. In the case of addition and subtraction, they do exactly that. For instance, if you were to add 3 and 4 to get 7, you can undo this operation by subtracting 3 or 4 from 7 which will give back the other original number. Hence, addition and subtraction are deemed as inverse operations.
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a cylinder-shaped water tank is 160 cm tall and measures 87.92 cm around. what is the volume if the water tank? enter your answer as a decimal in the box. use 3.14 for pi.
Answer:
The volume is equal to [tex]98,470.4\ cm^{3}[/tex]
Step-by-step explanation:
step 1
Find the radius of the base of cylinder
we know that
The circumference of a circle is equal to
[tex]C=2\pi r[/tex]
we have
[tex]C=87.92\ cm[/tex]
assume
[tex]\pi =3.14[/tex]
substitute and solve for r
[tex]87.92=2(3.14)r[/tex]
[tex]r=87.92/[2(3.14)]=14\ cm[/tex]
step 2
Find the volume of the water tank (cylinder)
The volume is equal to
[tex]V=\pi r^{2} h[/tex]
we have
[tex]r=14\ cm[/tex]
[tex]h=160\ cm[/tex]
assume
[tex]\pi =3.14[/tex]
substitute
[tex]V=(3.14)(14)^{2} (160)[/tex]
[tex]V=98,470.4\ cm^{3}[/tex]
Answer:
The answer is 98470.4
Step-by-step explanation:
Given the the table of values below which of the following ordered pairs are found on the graph of the inverse function?
Answer:
C
Step-by-step explanation:
From the table we see that
[tex]f(-2)=12\\ \\f(-1)=10\\ \\f(0)=8\\ \\f(1)=6\\ \\f(2)=4[/tex]
Thus, the inverse function has the rule
[tex]f^{-1}(12)=-2\\ \\f^{-1}(10)=-1\\ \\f^{-1}(8)=0\\ \\f^{-1}(6)=1\\ \\f^{-1}(4)=2[/tex]
This gives us that ordered pairs
[tex](12,-2),\ (10,-1),\ (8,0),\ (6,1),\ (4,2)[/tex]
are on the graph of the inverse function
Answer:
it is c
Step-by-step explanation:
yep
Marcy is making a hooked circle-shaped rug for her mother. The circumference of the circle-shaped rug is 56.52 inches.
What is the area of the rug? Use = 3.14.
Answer:
The area is
[tex]A=254.34\ in^2[/tex]
Step-by-step explanation:
The circumference of a circle is given by a following formula:
[tex]C = 2\pi r[/tex]
Where r is the radius of the circumference.
In this case we know that
[tex]C = 2\pi r=56.52\ in[/tex]
We solve the equation for r
[tex]C = 2\pi r=56.52\ in[/tex]
[tex]2\pi r=56.52\\\\r=\frac{56.52}{2\pi}\\\\r=9\ in[/tex]
The area of a circumference is given by the following formula
[tex]A=\pi r^2[/tex]
Now we substitute the value of r in the equation to find the area
[tex]A=\pi (9)^2[/tex]
[tex]A=3.14* (9)^2[/tex]
[tex]A=254.34\ in^2[/tex]
If –1 is a root of f(x), which of the following must be true?
Answer:
(x + 1) is a factor of f(x).
Step-by-step explanation:
Please share the answer choices. Thank you.
If –1 is a root of f(x), which of the following must be true?
(x + 1) is a factor of f(x).
what is 5 1/4 in decimal form
5 1/4 in decimal form is 5.25 because 25 is 1/4 of 100.
The mixed fraction 5 1/4 is equivalent to 5.25 in decimal form. The fraction 1/4 is converted to decimal by dividing 1 by 4 to get 0.25 and then added to the whole number 5.
Explanation:To convert the mixed fraction 5 1/4 to decimal form, you need to divide the numerator by the denominator for the fractional part and then add that result to the whole number part. In this case, 1 divided by 4 equals 0.25. Adding this result to the whole number 5 gives you 5.25, which is 5 1/4 in decimal form.
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Convert 27/40 to a decimal using long division.
Answer:
Step-by-step explanation:
\frac{27}{40} in a decimal is 0.675
I’ve attached a picture of my work!!
Using the formula C = 2πr, find the circumference of a circle with diameter of 28 inches. Round your answer to the nearest inch.
Answer:
88 inches
Step-by-step explanation:
Diameter is 2 times the radius (r) so divided 28 by 2 to get 14 as the radius.
Plug this in:
2π14
28π
87.964
88
The answer is 88 btw
Eli is filling up gift bags each bag will have a 3 baseball cards which number sentence would Eli use to find how many bags he can feel if he has 21 cards?
21-3=18
21÷3=7
21+3=24
21x3=63
If Eli has a total of 21 baseball cards, and wants each bag to have 3 cards, you would divide the number of total cards by the amount you want in each group. Dividing is like grouping.
So, the equation he'd use is: 21 / 3 = 7
I hope that helped.
Answer:
21÷3=7
Step-by-step explanation:
Dividing the number of available cards by the quantity in each bag will tell Eli how many bags he can fill.
___
Division can be thought of as "repeated subtraction" with the quotient telling you how many times the divisor can be subtracted from the dividend. One way Eli can do this repeated subtraction is to put the cards into piles of 3:
ccc . ccc . ccc . ccc . ccc . ccc . ccc
He will run out of cards when he has made 7 piles.
On a piece of paper, graph y-3>2x+2. Then determine which answer choice matches the graph you drew
ANSWER
Option C
EXPLANATION
The given inequality is
[tex]y - 3 \: > \: 2x + 2[/tex]
We add 3 to both sides to get,
[tex]y \: > \: 2x + 2 + 3[/tex]
[tex]y \: > \: 2x +5[/tex]
The corresponding linear equation is
[tex]y = 2x + 5[/tex]
This becomes the dashed boundary line of the inequality.
We test the origin to determine which half plane to shade.
[tex]0\: > \: 2(0)+5[/tex]
[tex]0\: > \: 5[/tex]
This is false.
Hence we shade the upper half plane.
The correct answer is C
which are the correct reprsentives of the inequality -3(2x-5)<5(2-x)check all that apply x<5
Answer:
x > 5Step-by-step explanation:
[tex]-3(2x-5)<5(2-x)\qquad\text{use the distributive property}\\\\(-3)(2x)+(-3)(-5)<(5)(2)+(5)(-x)\\\\-6x+15<10-5x\qquad\text{subtract 15 from both sides}\\\\-6x<-5-5x\qquad\text{add 5x to both sides}\\\\-x<-5\qquad\text{change the signs}\\\\x>5[/tex]
help
B= °
b=
c=
it has something to do with sin cos or tan I'm not sure
Answer:
Actually it does relate to sin, cos and tan.
* tan50° = 16/b
=> b = 16/tan50° ≈ 13.426
* sin50° = 16/c
=> c = 16/sin50° ≈ 20.887
*cos∠B = 16/c = 16/20.887
=> m∠B ≈ 40.002
This system of equations has an infinite number of solutions. Define the solutions algebraically, and allow z to represent all real numbers.
3x − 4y + 4z = 7
x − y − 2z = 2
2x − 3y + 6z = 5
x =
y =
z = all real numbers
Answer:
x = 12z + 1 and y = 10z - 1
Step-by-step explanation:
To solve the system of equations, we can use the substitution method
If we call
3x - 4y + 4z = 7 I
x - y - 2z = 2 II
2x - 3y + 6z = 5 III
Clearing II x = 2 + y + 2z
Now, replacing II in III
2(2 + y + 2z) - 3y +6z = 5
4 + 2y + 4z - 3y + 6z = 5
10z - y = 1 from here y = 10z - 1
Finally, replacing y in I
3x - 4(10z - 1) + 4z = 7
3x -40z + 4 + 4z = 7
3x - 36z = 3
3x = 36z + 3
x = 12z + 1
Done
if you are trying to choose a committee which of the following is the best sampling method?
A. simple random sampling
B. systematic random sampling
C. stratified random sampling
D. Cluster sampling
Answer:
The best answer would be B. systematic random sampling
Step-by-step explanation:
The best sampling method for choosing a committee is Cluster Sampling.
What are different types of sampling?Simple random sampling - Simple random sampling is a sort of probability sampling in which a researcher selects a subset of a population at random.
Systematic random sampling A probability sampling approach in which a random sample of a bigger population is selected with a defined periodic interval.
Stratified random sampling A form of sampling known as stratified random sampling includes dividing a population into smaller sub-groups known as strata.
Cluster Sampling The population is divided into groups first. Every member of some of the groupings is included in the total sample. The teams are chosen at random.
If we are trying to choose a committee, cluster sampling method would be the best as there should be representatives of every group of the society in that committee and the representative from each group should be chosen completely randomly.
Hence the cluster sampling method is the best way to choose a committee.
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Sammy likes to mix and match her 4 necklaces, 2 bracelets, and 3 hats. The colors are listed in the table. On monday, she randomly picks a bracelet, a necklace, and a hat. What is the probability of sammy choosing a red necklace and yellow bracelet?
URGENT BRAINLIEST
Answer:
[tex]\frac{1}{8}[/tex]
Step-by-step explanation:
In calculating probability, remember that "AND" means "MULTIPLICATION" and "OR" means "ADDITION".
Since we want the probability of red necklace AND yellow bracelet, we calculate individual probabilities and "MULTIPLY" them.
Probability of red necklace:
There are 4 necklaces and 1 of them is red, hence probability of red necklace is 1/4
Probability of Yellow bracelet:
There are 2 bracelet and 1 of them is yellow, hence probability of yellow bracelet is 1/2
Now, we multiply both to get our answer.
1/4 * 1/2 = 1/8
Answer:
1/8
Step-by-step explanation:
Please answer these 2 questions. I promise to mark as brainliest if you can solve with steps. Thank you.
Answer:
see explanation
Step-by-step explanation:
4
Since the triangles are similar then the ratios of corresponding sides are equal, that is
[tex]\frac{BC}{EF}[/tex] = [tex]\frac{AB}{DE}[/tex] ( substitute in values )
[tex]\frac{x-1}{18}[/tex] = [tex]\frac{4}{12}[/tex] ( cross- multiply )
12(x - 1) = 72 ( divide both sides by 12 )
x - 1 = 6 ( add 1 to both sides )
x = 7
------------------------------------------------------------------------------
5
The parallel line segment SV is half of RW
that is x = 7.5
SV also divides the sides RT and WT in proportion, that is
[tex]\frac{10}{3}[/tex] = [tex]\frac{8}{y}[/tex] ( cross- multiply )
10y = 24 ( divide both sides by 10 )
y = 2.4
Given the function f(x) = 4(2)x, Section A is from x = 1 to x = 2 and Section B is from x = 3 to x = 4.
Part A: Find the average rate of change of each section. (4 points)
Part B: How many times greater is the average rate of change of Section B than Section A? Explain why one rate of change is greater than the other. (6 points)
Answer:
Step-by-step explanation:
I'm sure you want your functions to appear as perfectly formed as possible so that others can help you. f(x) = 4(2)x should be written with the " ^ " sign to denote exponentation: f(x) = 4(2)^x
f(b) - f(a)
The formula for "average rate of change" is a.r.c. = --------------
b - a
change in function value
This is equivalent to ---------------------------------------
change in x value
For Section A: x changes from 1 to 2 and the function changes from 4(2)^1 to 4(2)^2: 8 to 16. Thus, "change in function value" is 8 for a 1-unit change in x from 1 to 2. Thus, in this Section, the a.r.c. is:
8
------ = 8 units (Section A)
1
Section B: x changes from 3 to 4, a net change of 1 unit: f(x) changes from
4(2)^3 to 4(2)^4, or 32 to 256, a net change of 224 units. Thus, the a.r.c. is
224 units
----------------- = 224 units (Section B)
1 unit
The a.r.c for Section B is 28 times greater than the a.r.c. for Section A.
This change in outcome is so great because the function f(x) is an exponential function; as x increases in unit steps, the function increases much faster (we say "exponentially").
Answer:
Part A: Section A- 8, Section B- 32.
Part B: 4 times.
Step-by-step explanation:
The function is given by .
Section A is from x = 1 to x = 2.
Now, f(1) = 4 × 2 = 8 and f(2) = 4 × 2 × 2 = 16
Again, section B is from x = 3 to x = 4.
Now, f(3) = 4 × 2 × 2 × 2 = 32 and f(4) = 4 × 2 × 2 × 2 × 2 = 64
Part A:
In section A, the average rate of change is = 8
And in section B, the average rate of change is = 32
Part B:
Therefore, the average rate of change of section B is greater than section A is (32 / 8 = 4)
Benito runs 1/10 of a mile each day. Which shows how to find the number of days it will take for Benito to run 3/5 of a mile?
A. divide 1/10 by 3/5
B. divide 1/10 by 5/3
C. divide 3/5 by 1/10
D. divide 3/5 by 10/1
D is most likely right. Basically, I would turn them into decimals and divide using a graphing calculator.
Answer:
D
Step-by-step explanation:
Find the exact circumference of a circle with an approximate area of 78.5 square feet.
Answer:
31.41ft
Step-by-step explanation:
the area A of a circle is πr² = 78.5 square feet
3.1416* r² = 78.5
r² =78.5/3.1416 = 24.987
r = √24.987 = 4.999ft
the circumference C of a circle is 2πr
C = 2* 3.1416 * 4.999 = 31.41ft
Hannah walks dogs for four different families. She charges each family the same amount of money per hour. The numbers of hours she worked last week walking dogs for each of the families are shown. 1 1/4 hours, 2 1/6 hours, 1 1/3 hours, 3 hours. Hannah earned $93 for the hours she worked last week walking dogs. Calculate the amount of money Hannah earns per hour for walking dog. Write an equation that can be used to determine the amount of money, m, in dollars, Hannah earns when we works H hours walking dogs. Show your work or explain your answer
Answer:1 1/4+2 1/6+1 1/3+3=12.916_
12.916/93=.13888172 dollars an hour.
.13888172(h)=m
Step-by-step explanation:i converted to decimals but its still the same
Hannah worked for a total of 7 11/12 hours and earned $93. She charges approximately $12 per hour, so the equation for the amount she earns is m = 12H.
Explanation:To find out how much Hannah charges per hour, we first need to find the total number of hours she worked. Adding up the hours given, Hannah worked 1 1/4 + 2 1/6 + 1 1/3 + 3 hours = 7 11/12 hours. Since Hannah earned $93 for these hours, we can set up the equation, m = 93 / (7 11/12), where m represents the money Hannah earns per hour, and H represents the total number of hours Hannah worked. Upon solving this equation, we find that Hannah charges approximately $12 per hour.
Therefore, the equation that can be used to determine the money Hannah earns from walking the dogs is m = 12H.
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The critical pressure of carbon dioxide is 72.7 atm what is this value in units of pascals?
Answer:
7,366,327.50 pascals
Step-by-step explanation:
we know that
1 atm= 101,325 pascals
we have
72.7 am
Convert to pascals
72.7 atm=72.7*101,325=7,366,327.50 pascals
Evaluate (f − g)(2) for f(x) = 2x2 − 18 and g(x) = –3x − 7.
For this case we have the following functions:
[tex]f (x) = 2x ^ 2-18\\g (x) = - 3x-7[/tex]
We must find:
[tex](f-g) (2)[/tex]
By definition, we have to:
[tex](f-g) (x) = f (x) -g (x)[/tex]
So:
[tex](f-g) (x) = 2x ^ 2-18 - (- 3x-7)\\(f-g) (x) = 2x ^ 2-18 + 3x + 7\\(f-g) (x) = 2x ^ 2 + 3x-11[/tex]
Then, we evaluate in x = 2:
[tex](f-g) (2) = 2 (2) ^ 2 + 3 (2) -11\\(f-g) (2) = 2 (4) + 6-11\\(f-g) (2) = 8 + 6-11\\(f-g) (2) = 8 + 6-11\\(f-g) (2) = 3[/tex]
ANswer:
[tex](f-g) (2) = 3[/tex]
URGENT!!!!!!!!!
A bird drops a stick to the ground from a height of 80 ft. The function h = -16t^2 = 80 gives the stick's approximate height h above the ground, in feet, after t seconds. Graph the function. At about what time does the stick hit the ground?
Please show all the work and steps and if you cant graph the function the can you please give the points and I will graph it then
Answer:
1:7 2:9
Step-by-step explanation:
How are the functions f(x) = 16* and g(x) = 16 2 * related?
O The output values of g(x) are one-half the output values of f(x) for the same value
O The output values of g(x) are one-quarter the output values of f(x) for the same va
The output values of g(x) are the square root of the output values of f(x) for the sa
The output values of g(x) are the square of the output values of f(x) for the same va
It’s c
Step-by-step explanation:
I did it
Answer:
It's C
Step-by-step explanation:
So I went to Brainly to get answers too but I couldn't find any. I guessed and got it right on edge2022
The graphs of f(x) and g(x) are shown below:
graph of function f of x open upward and has its vertex at negative 7, 0. Graph of function g of x opens upward and has its vertex at negative 5, 0.
If f(x) = (x + 7)2, which of the following is g(x) based on the translation?
g(x) = (x + 9)2
g(x) = (x + 5)2
g(x) = (x − 9)2
g(x) = (x − 5)2
the translation should make the equation
g(x)= (x+5)2
Answer:
b
Step-by-step explanation:
6 more than 3 times what number squares is 81
6. The pressure exerted on the walls of a container by a gas enclosed within it is directly proportional to
the temperature of the gas. If the pressure is 6 pounds per square inch when the temperature is 440° F,find
the pressure exerted when the temperature of the gas is 380°F.
(SHOW WORK)
Answer: 5.18 pounds
Step-by-step explanation:
Given: The pressure exerted on the walls of a container by a gas enclosed within it is directly proportional to the temperature of the gas.
Let 'p' denote the pressure exerted on the walls and 't' denotes temperature of the gas.
Then the equation is given by :-
[tex]p=ct[/tex], where c is the proportionality constant.
Also, the pressure is 6 pounds per square inch when the temperature is 440° F.
[tex]\Rightarrow\ 6=440c\\\\\Rightarrow\ c=\dfrac{6}{440}=\dfrac{3}{220}[/tex]
Then, the final equation to calculate pressure becomes :-
[tex]p=\dfrac{3}{220}t[/tex]
Now, the pressure exerted when the temperature of the gas is 380°F is given by :-
[tex]p=\dfrac{3}{220}\times380=5.181818\approx5.18\text{ pounds}[/tex]
What is the value of x in the trangle? Enter your answer in the box. Round your final answer to the nearest hundredth.
Use trigonometry.
cos(18°) = x/25
Multiply both sides by 25.
cos(18°)25 = x
23.7764129074 = x
We round off to the nearest hundredth. This means to round off to two decimal places.
Doing so, we get 23,78 cm = x.
A model rocket is launched from a roof into a large field. The path of the rocket can be modeled by the equation y=-0.04x^2+9.1x+11.9, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. How far horizontally from it’s starting point will the rocket land?
Answer:
228.8 meters
Step-by-step explanation:
y = -0.04 x² + 9.1 x + 11.9
When the rocket lands, y = 0:
0 = -0.04 x² + 9.1 x + 11.9
Solving for x, start by multiplying by -1:
0 = 0.04 x² - 9.1 x - 11.9
Multiply by 100:
0 = 4x² - 910 x - 1190
Solve with quadratic formula:
x = [ -b ± √(b² - 4ac) ] / 2a
x = [ 910 ± √((-910)² - 4(4)(-1190)) ] / 2(4)
x = [ 910 ± √(847140) ] / 8
x ≈ -1.3, 228.8
Since x can't be negative, x = 228.8 meters.
Answer:
The rocket will land at 208.02 m. Hence, if you are on the same connexus assignment, your answer will be A.
Hope this helps! :D
Help me please i have been on this problem for a while and my teachers aren't really helping!
Answer:
106 m²
Step-by-step explanation:
Imagine this shape was a square, it's area would be 120 m².
Now imagine the little rectangle with 7 m as the side, you will have to work out the area of that so
Side = 7
4 + 4 + ? = 10
8 + ? = 10
? = 2
So the area of the little rectangle is 14 m²
Now we minus both of the areas : 120 - 14 = 106
What is the equation of a line, in general form, with a slope of -2 and a y-intercept of 8?
A.x + 2y - 8 = 0
B.2x + y - 8 = 0
C.2x - y + 8 = 0
Answer:
B. 2x + y -8 = 0
Step-by-step explanation:
2x + y -8 = 0
2x - 8 = -y
Divide both sides by negative one
-2x + 8 = y
Answer:
B. 2x + y - 8 = 0Step-by-step explanation:
The slope-intercept form of an equation of a line:
[tex]y=mx+b[/tex]
m - slope
b - y-intercept
We have the slope m = -2 and the y-intercept b = 8. Substitute:
[tex]y=-2x+8[/tex]
The general form of an equation of a line:
[tex]Ax+By+C=0[/tex]
Convert:
[tex]y=-2x+8[/tex] add 2x to both sides
[tex]2x+y=8[/tex] subtract 8 from both sides
[tex]2x+y-8=0[/tex]