Answer:
Correct choice is A
Step-by-step explanation:
If a function has an inverse, then there is at most one x-value for each y-value.
The tangent function is periodic with period [tex]\pi.[/tex] Hence, at each value for which [tex]f(x)=\tan x[/tex] is defined, [tex]f(x+n\pi )=\tan x[/tex] for each integer n. Therefore, the function [tex]f(x)=\tan x[/tex] does not have an inverse. Since tangent is not a one-to-one function, the domain must be limited. From examining the graph of the tangent function, we see that in each interval of the form
[tex]\left((2k−1)\dfrac{\pi}{2},(2k+1)\dfrac{\pi}{2}\right)[/tex]
where k is an integer, the tangent function assumes every value in its range. Moreover, in each such interval, each y-value is achieved exactly once. Hence, we can create an invertible function by restricting the domain tangent function to one such interval. Such interval is an interval between two consecutive vertical asymptotes [tex]x=(2k−1)\dfrac{\pi}{2}[/tex] and [tex]x=(2k+1)\dfrac{\pi}{2}.[/tex]
Answer this question please! 25 points and brainliest!
Answer: c
Step-by-step explanation:
the number with one dot < on the left side means its the smaller number
Answer:
c x< 9
Step-by-step explanation:
A number less than 9
x must be less than 9
No equals sign because it is less than
The inequality faces the larger number
x < 9
A football signs a contract that pays him $16 million over 4 years. What is his average pay per year?
Answer:
the footballer's average pay would be $4 million/annum.
x 1 2 3 4
y 5 10 15 20
What's the constant?
Answer:
x ---> 1
y ---> 5
Step-by-step explanation:
We are given paired values for two variables x and y and we are to determine the constant number by which each term is increased such that they are in a proportional relationship.
For x, we have the following paired values:
[tex]x: 1, 2, 3, 4[/tex]
So here the difference between each consecutive term is 1 so the constant is 1.
And for y, we have:
[tex]y: 5, 10, 15, 20[/tex]
In this case, the difference between each consecutive term is 5 so the constant is 5.
There were 50 students in the chess club. The membership went up by 10%. How many more students joined the club?
The membership went up by 10%.
There are now 55 total students in the club.
The formula for calculating the percentage change is
[tex]p=\frac{N-O}{O}.100[/tex]
where p is the percent change, N is the New Value and O is the Old Value.
In this problem we are given the Old Value (50) and the percent change (10). We can substitute this into the formula and solve for N:
[tex]10=\frac{N-50}{50} .100\\10=2(N-50)\\5=N-50\\N=55[/tex]
There are now 55 total students in the club.
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Stephanie bought 3 pizzas for a total of $9.00. Which expression shows p, the cost of each pizza?
Answer:
the answer is 3
Step-by-step explanation:
3 pizzas equal $9.00 so in order to know how much each pizza was, we will have to do division:
9 divided by 3
9/3
3
HHHHHUUUUUUUURRRRRRRYYYYY!!!!!!!
The quotient of a number and 18 is 109.8.
which statements are correct?
It can be solved by using the division property of equality.
It can be solved by using the multiplication property of equality.
The equation should be x/18=109.8
The equation should be 18x=109.8
The answer is 6.1.
The answer is 1,976.4.
Answer:
2. It can be solved by using the multiplication property of equality.
3. The equation should be: [tex]\frac{x}{18}=109.8[/tex]
6. The answer is 1,976.4.
Step-by-step explanation:
Let x be the number.
We have been given that the quotient of a number and 18 is 109.8.
Since we know that in a division problem the number which is being divided called dividend and by which number we divide is called divisor.
[tex]\text{Dividend}\div \text{Divisor }=\text{ Quotient}[/tex]
We can represent our given information as:
[tex]\frac{x}{18}=109.8[/tex]
By using multiplication property of equality we will get,
[tex]18*\frac{x}{18}=18*109.8[/tex]
[tex]x=18*109.8[/tex]
[tex]x=1976.4[/tex]
Upon looking at our given choices we can see that 2nd, 3rd and 6th statements are correct choices.
George bought 30 packs of football cards.There were 14 cards in each pack.How many cards did George buy
Answer:
there would be 420 cards in total
Step-by-step explanation:
How can you tell by looking at the coordinates of the two triangles that δ a'b'c' is a 180° rotation of δ abc?
a.the coordinates cannot prove a 180° rotation.
b.the y-coordinates of the points on δa'b'c' have opposite signs from the corresponding points on δabc.
c.the x-coordinates of the points on δa'b'c' have opposite signs from the corresponding points on δabc. eliminate
d.both the x and y coordinates of the points on δa'b'c' have opposite signs from the corresponding points on δabc?
Answer:
Option d is correct.
Both the x and y coordinates of the point on δa'b'c' have opposite signs from the corresponding points on δabc.
Step-by-step explanation:
The rule of 180 degree rotation about the origin is:
[tex](x, y) \rightarrow (-x , -y)[/tex]
Since a Rotation of a point through 180°, about the origin when a point a(h, k) is rotated about the origin through 180° in anticlockwise or clockwise direction.
then, By the rule of 180 degree rotation;
[tex]a(h, k) \rightarrow a'(-h , -k)[/tex]
so, it takes the new position i.e, [tex]a'(-h , -k)[/tex]
Therefore, both the x and y coordinates of the point on δa'b'c' have opposite signs from the corresponding points on δabc.
Last month, dory biked 11 times as many miles as karly. Togetherthey biked a total of 156 miles . How many miles did dory bike last month
Answer:
143 miles
Step-by-step explanation:
Let the distance Karly biked be x
Then Dory biked 11x
So x+11x=156
x=156/12=13
So Dory biked 11 ⋅ 13= 143 miles
Is this correct?
A recursive rule for a geometric sequence is a1=3;an=1/2an−1.
What is the explicit rule for this sequence?
Enter your answer in the box.
A recursive rule for a geometric sequence:
[tex]a_1\\\\a_n=r\cdot a_{n-1}[/tex]
---------------------------------------------------
[tex]a_1=3\\\\a_n=\dfrac{1}{2}a_{n-1}\to \boxed{r=\dfrac{1}{2}}[/tex]
--------------------------------------------------
Exciplit rule:
[tex]a_n=a_1r^{n-1}[/tex]
Substitute:
[tex]a_n=3\left(\dfrac{1}{2}\right)^{n-1}=3\cdot\left(\dfrac{1}{2}\right)^n\cdot\left(\dfrac{1}{2}\right)^{-1}=3\cdot\left(\dfrac{1}{2}\right)^n\cdot2\\\\\boxed{a_n=6\cdot\left(\dfrac{1}{2}\right)^n}[/tex]
Answer:
The answer is: a_n = 6*(1/2)^n
Our Einstein has baked a cake and cut it into 8 slices. If he hands out 3 slices to his guests, what fraction of the cake is left?
Answer:
[tex]\frac{5}{8}[/tex]
Step-by-step explanation:
We have been given that our Einstein has baked a cake and cut it into 8 slices. So each slice will be equal [tex]\frac{1}{8}[/tex].
He hands out 3 slices to his guests. Let us find out part of the cake given to guests.
[tex]\text{The part of the cake given to guests}=\frac{1}{8}+\frac{1}{8}+\frac{1}{8}[/tex]
[tex]\text{The part of the cake given to guests}=\frac{1+1+1}{8}[/tex]
[tex]\text{The part of the cake given to guests}=\frac{3}{8}[/tex]
To find the fraction of left cake we will subtract [tex]\frac{3}{8}[/tex] from 1 as Einstein has 1 whole cake.
[tex]\text{fraction of cake is left}=1-\frac{3}{8}[/tex]
[tex]\text{fraction of cake is left}=\frac{8}{8}-\frac{3}{8}[/tex]
[tex]\text{fraction of cake is left}=\frac{8-3}{8}[/tex]
[tex]\text{fraction of cake is left}=\frac{5}{8}[/tex]
Therefore, [tex]\frac{5}{8}[/tex] of the cake is left.
Answer:
As per the given statement: Our Einstein has baked a cake and cut it into 8 slices.
⇒ Total slice of cake Einstein has baked = 8
Also, it is given that if he hands out 3 slices to his guests.
⇒ Number of slice he hands out to his guests = 3
Remaining slice of a cake Einstein left with = 8 -3 = 5.
We have to find the fraction of the cake is left.
Fraction states that a fraction is a number that represents a part of a whole. Also, It consists of a numerator and a denominator, where numerator represents the number of equal parts of a whole, while the denominator is the total number of parts.
Fraction of the cake is left = [tex]\frac{\text{Slices of cake left}}{\text{Total number of slices of a cake}}[/tex]
Substitute the given values we get;
[tex]\text{Fraction of the cake is left} =\frac{5}{8}[/tex]
therefore, the fraction of the cake is left is, [tex]\frac{5}{8}[/tex]
Anita does the same number of jumping jacks each day over a period of several days. On the fifth day, she has completed a total of 325 jumping jacks. By the eighth day, she has completed a total of 520. What value equals the slope of the line of the total number of jumping jacks when graphed against the day?
Which is a root of [tex]f(x)=0[/tex] with a multiplicity of 2?
Answer:
3
Step-by-step explanation:
The zero at the point x=3 is a result of a factor of even degree, because the function does not change sign as the value of (x -3) changes sign. Since a cubic only has 3 factors, the even degree must be 2. That is, (x -3)² is a factor of f(x) and the root at x=3 has multiplicity 2.
can someone help me with this question?
Answer: [tex]\bold{(A)\ \dfrac{\text{51 miles}}{\text{1 hour}}}[/tex]
Step-by-step explanation:
Consider the formula "distance (d) = rate (r) x time(t)" and solve for r.
d = r · t
÷ t ÷ t
[tex]\dfrac{d}{t}=r[/tex]
Now plug in the given d and t values from the table to solve for r:
[tex]r=\dfrac{\text{204 miles}}{\text{4 hours}}[/tex]
[tex]=\dfrac{\text{51 miles}}{\text{1 hour}}[/tex] simplified the fraction
You can check this by plugging in the other 3 values from the table:
[tex]r=\dfrac{\text{306 miles}}{\text{6 hours}}[/tex]
[tex]=\dfrac{\text{51 miles}}{\text{1 hour}}[/tex]
[tex]r=\dfrac{\text{408 miles}}{\text{8 hours}}[/tex]
[tex]=\dfrac{\text{51 miles}}{\text{1 hour}}[/tex]
[tex]r=\dfrac{\text{510 miles}}{\text{10 hours}}[/tex]
[tex]=\dfrac{\text{51 miles}}{\text{1 hour}}[/tex]
Subtract 7a^4-4a^2b^2+67a 4 −4a 2 b 2 +6 from 3a^4+2ab^2+113a 4 +2ab 2 +11.
Final answer:
To subtract the polynomials, we subtract the coefficients of like terms: the a⁴ terms give -4a⁴, there are no changes to the ab² term since it's not present in both polynomials, and for the a terms, we get 46a. So, the result is -4a⁴ + 2ab² + 46a.
Explanation:
The question asks us to perform polynomial subtraction. Specifically, the question requires subtracting 7a⁴ - 4a²b² + 67a from 3a⁴ + 2ab² + 113a. To do this, we subtract the coefficients of like terms, which are terms with the same variable raised to the same power.
Let's subtract step-by-step:
Subtract the a⁴ terms: 3a⁴ - 7a⁴ = -4a⁴Subtract the ab² terms: We do not have a term with ab² in the second polynomial, so we simply bring down the 2ab² term.Subtract the a terms: 113a - 67a = 46aPutting it all together, the result of our subtraction is -4a⁴ + 2ab² + 46a.
Hey y'all please help me with this geometry problem,would really appreciate it :)
180-(x+50)+180-4x+180-(2x+40)+180-3x=360
720-x-50-4x-2x-40-3x=360
630 - 10x=360
-10x=360-630
-10x=-270 /:(-10)
x=27
A school replaced 20% of its computers with new ones what is the total number of computers in the school if 55 computers were replaced
Answer:
There were 275 computers
Step-by-step explanation:
Computers replaced = total computers * percent replaced
What do we know?
The percent replaced is 20 = .2
55 computers were replaced.
Substitute this in
55 = total computers * .2
Divide each side by .2
55/.2 = total computers *.2 /.2
275 = total computers
There were 275 computers
Midsegment of Triangles
Find x
Answer: x = 3
Step-by-step explanation:
If 3x is the midsegment of the triangle, then it is half the length of the base, which implies that the length of the base equals twice the length of the midsegment:
base = 2 * midsegment
18 = 2 (3x)
18 = 6x
÷6 ÷6
3 = x
pease help, thank you
Answer: -2
=====================================================
Draw a vertical line through 4 on the x axis. This vertical line crosses the parabola at some point (which we'll call point A). Draw a horizontal line from point A to the y axis and note how it lands on y = 12. Therefore the point (4,12) is on this parabola.
Repeat the same steps as before to find that (8,4) is also on the parabola
We need to find the slope of the line through (4,12) and (8,4)
m = (y2 - y1)/(x2 - x1)
m = (4-12)/(8 - 4)
m = -8/4
m = -2
The slope of this line is -2 meaning that the average rate of change from x = 4 to x = 8 is -2.
The line goes down 2 units each time you move to the right 1 unit.
helps please i need it
Fatema bought 35 feet of window trim at a hardware store. The trim cost $1.75 per foot, including sales tax. If Fatema paid with a $100.00 bill, how much change should she have received?
Answer:$38.75
Step-by-step explanation:
35(number of feet) * $1.75(cost per foot) = $61.25(total cost)
$100(bill used) - $61.25(total cost) = $38.75(amount given in change)
Answer:
$38.75
Step-by-step explanation:
We have given that : The trim cost per foot =$1.75
for 35 feet of window trim cost = 35×1.75 = $61.25
Now, Fatima paid $100.00 bill
Amount she received = Amount she pay - cost of trim she buy
= $100 - $61.25
=$38.75
Saul in third in line. Enid is last in line. There are 3 children between them. What position is Enid in line?
Final answer:
Starting with Saul in the 3rd position and counting the 3 children between him and Enid, Enid is determined to be in the 7th position in the line.
Explanation:
To find the position of Enid in line, we start with Saul who is third in line. If there are 3 children between Saul and Enid, and Enid is last, we need to count the positions:
Saul is 3rd in line.
1st child after Saul is in the 4th position.
2nd child after Saul is in the 5th position.
3rd child after Saul is in the 6th position.
Enid is after the 3rd child, placing her in the 7th position.
Therefore, Enid is in the 7th position in line.
3 log 2x=4 Please solve
[tex]3 log 2x=4\ /:3\\log2x=\frac{4}{3}\\10^{\frac{4}{3}}=2x\ /:2\\x=\frac{10\sqrt[3]{10} }{2}\\x=5\sqrt[3]{10}[/tex]
What percentage is the fraction `2/(10)` equal to?
Answer:
20%
Step-by-step explanation:
Percentage means out of 100
We need to get 2/10 to be out of 100
Multiply by 10/10
2/10*10/10
= 20/100
This is 20%
If a matrix does NOT have an inverse, what do know about the determinant?
A) The determinant does not exist.
B) The determinant is O.
C) The determinant is 1.
D) The determinant is -1.
Phyllis Doran worked at Symmes Medical Center for 7 1/2 hours on Monday and from 8:00 a.M. Until 1:00 p.M. On Tuesday What is the total number of hours she worked
Answer:
Step-by-step explanation:
Write an equation of the line that is parallel to 3x + 9y = 7 and passes through the point (6, 4).
A) y = 3x - 26
B) y = -3x + 16
C) y = 1/3 x-2
D) y = -1/3 x+6
Answer:
D) y = -1/3 x+6
Step-by-step explanation:
If we want to find a line parallel to 3x+9y=7, the slopes will have to be the same because parallel lines have the same slope. Knowing y= mx+b we need to find the slope of the old line.
3x+9y=7
Subtract 3x from each side
3x-3x +9y = -3x+7
9y = -3x+7
Divide each side by 9
9y/9 = -3x/9 + 7/9
y = -1/3 x + 7/9
We know the slope of the old line is -1/3, so the slope of the parallel line is -1/3.
If we know the slope of the line and a point, we can use the point slope form of a line
y-y1 = m(x-x1)
y-4 = -1/3(x-6)
Distribute the -1/3
y-4 = -1/3 x -1/3*-6
y-4 = -1/3x +2
Add 4 to each side
y-4+4 = -1/3x +2+4
y = -1/3x+6
BRAINLIEST AND 60 POINTS
A dartboard is divide into sections numbered 1-20. Leon throws a dart at the board 30 times. 8 times the dart lands on the number 2. What is the experimental probability that the dart lands on number 2?
Answer:
4/15
Step-by-step explanation:
Experimental probability is the actual times the event occurs divided by the number of trials
Actual times : 8
Number of trials: 30
Experimental probability of a 2: 8/30 = 4/15
Jasmine works at the public library after school. she makes $7.00 per hour. she cannot work more than 15 hours per week. if y = 7x represents jasmine's earning, what are the values in the domain?
a.x ≤ 15
b.0 ≤ x ≤ 15
c.1 ≤ x ≤ 15
d.all real numbers
Answer: ITS B
Step-by-step explanation:
One number is five more than another and their sum Is there less than three times the smaller find the numbers
Answer:
The numbers are 8 and 13
Step-by-step explanation:
In order to find this, we set the smaller number as x. Then we can set the larger one as x + 5, since it is 5 more than the smaller.
Given these two, we can then set them equal to 3x - 3, since the answer is three less than three times the larger.
x + x + 5 = 3x - 3
2x + 5 = 3x - 3
5 = x - 3
8 = x
Now to find the larger number, put into the larger number equation.
x + 5
(8) + 5
13
The numbers are 8 and 13.
What is an expression?
Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
The algebraic expression is,
''One number is five more than another and their sum Is there less than three times the smaller''.
Now,
Let the smaller number = x
Then, The another number = x + 5
Write the expression as;
x + x + 5 = 3x - 3
2x + 5 = 3x - 3
2x - 3x = - 3 - 5
- x = - 8
x = 8
And, The another number = x + 5
= 8 + 5
= 13
Thus, The numbers are 8 and 13.
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