Function f is a continuous linear function. Over which interval of the domain is function f positive?
X
-3
0
3
6
9
12
f (x)
4
3
0
-2
-4
-6
(-∞, 3)
(-∞, 0)
(0, ∞)
(-∞, ∞)
The function f is positive on the domain (-∞, 3)
The f(x) values corresponding to x-values are given. Also f(x) is a continuous linear function.
If we analyze the function values, the first 3 entries are positive, then from there the function values becomes negative.
Also it is clear from the function values that the function is decreasing from positive values to negative values.
The corresponding x-values for the positive values of the function are x = -3, x = 0 and x = 3.
Since f(x) is continuous linear function, the given x-values and f(x) values are not the only ones there. The domain and images are actually in the form of intervals, but here only certain values are given in the table.
Therefore, the function must be positive for x < -3 too.
Hence the domain where the function is positive becomes (-∞, 3).
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The frequency (F) and length (L) of a wave are related by the following formula F x L = 3.0 x 10^10. Consider that wavelength of violet light is 1.3 x 10^-8. What is the frequency of violet light
Answer:
B: 2.3 x 10^18
expination:
Substitute values into the formula.
F x L = 3.0 x 10*10
F x 1.3 x 10^−8 = 3.0 x 10^10
F = 3.0 x 10^10 1.3 x 10^−8 F = 2.3 x 10^18
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If y is directly proportional to the square of x and x is 5 when y is10 what is the
constant of variation?
The constant of variation is 0.4.
What is constant of variation?
A direct variation's product of two variables or the product of two variables in an inverse variation The constant of variation is used in the direct variation equations = k and y = kx as well as the inverse variation equations xy = k and y = k.
We know that y is directly proportional to the square of x.
Therefore we can use the formula,
y = kx^2
Putting the values of x and y,
10 = k (5)^2
=> 10 = k .25
=> 10/25 = k
=> k = 0.4
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When you first looked at the image, you saw that Dina has 24 tickets for carnival rides, and she wants to use all of them. Some rides have a height requirement, and some rides do not have a height requirement.
-Dina has 24 tickets and wants to use all of them. She plans to go on a ride most once.
-Rides with no height requirement cost 3 tickets.
-Rides with a height requirement cost 4 tickets.
Let's answer the question "How many rides can Dina go on using all of her tickets?"
1. Which statements are true about the variables involved in this situation and the values for each variable? Select all that apply.
A. The variables should represent the number of tickets spent on rides with no height requirement and the number of tickets spent on rides with a height requirement.
B. The variables should represent the cost in tickets for rides with no height requirement and the cost in ticket for rides with a height requirement.
C. The values for the variables can be any real number.
D. The values for the variables can be any nonnegative integers.
2.To answer the question, think about the strategy you would use along with all the information you have. What answer do you get? Select all that apply.
Note that 3-ticket rides have no height requirement, and 4-ticket rides have a height requirement.
A. 3-ticket rides: 0; 4-ticket rides: 6
B. 3-ticket rides: 2; 4-ticket rides: 6
C. 3-ticket rides: 4; 4-ticket rides: 3
D. 3-ticket rides: 6; 4-ticket rides: 2
E. 3-ticket rides: 8; 4-ticket rides: 0
3.D. Does your answer make sense in the context of the situation? How do you know? Select the correct words to complete the answer.
The answer makes sense in the context of the situation because the numbers of rides are A._______ and the number of tickets totals B._______.
1. The statements that are true about the variables involved in this situation and the values for each variable are:
A. The variables should represent the number of tickets spent on rides with no height requirement and the number of tickets spent on rides with a height requirement2. The number of rides Dina can go on using all of her tickets are
C. 3-ticket rides: 4; 4-ticket rides: 33. Yes, The number of rides equals the total number of tickets while maintaining going for a ride most once
The answer makes sense in the context of the situation because the numbers of rides are A. 7 and the number of tickets totals B. 24
How to find how many rides can Dina go on using all of her ticketsgiven data
Dina has 24 tickets for carnival rides
She plans to go on a ride most once
Rides with no height requirement cost 3 tickets
Rides with a height requirement cost 4 tickets
1. The given statement includes: She plans to go on a ride most once. This means that Dina will not have a zero ride.
zero is a real number and a non negative integer hence option A is correct
2. Option C maintains she plans to go on a ride most once and the number of tickets used totals 24
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Find the z-value so that the area to the right of z (shaded in the picture) is 0.9429.
To determine the z-value so that the area to the right of z is 0.9429
[tex]\begin{gathered} Pr(0Hence the corresponding Z- score from the shaded picture of x - value 0.4429 = 1.58I need help with number 3
Answer: A.
Step-by-step explanation:
Answer:
the perimeter of a triangle is 84 cm and its area is 336 cm? if one of its side is 30 cm find the length of reamining two side
I need help answering this question.
You have to determine which of the given square roots can be expressed as a fraction:
1) The square root of one is 1
[tex]\sqrt[]{1}=1[/tex]One can be expressed as a fracion:
[tex]1=\frac{1}{1}[/tex]So it is a rational number.
2) The square root of 2 is an irrational number and cannot be expressed as a fraction.
[tex]\sqrt[]{2}=1.414213562\ldots..[/tex]Its decimal expantion has no end, i.e. it has infinite decimal values.
3) Square root of three is an irrational number and cannot be expressed as a fraction.
[tex]\sqrt[]{3}=1.732050808\ldots.[/tex]4) The square root of 5 is an irrational number and cannot be expressed as a fraction.
[tex]\sqrt[]{5}=2.236067977\ldots..[/tex]In conclusion the only rational number in the given set is the square root of 1.
If the area to the right of x in a normal distribution is 0.543, what is the area to the left of x?
Answer:
.457
Step-by-step explanation:
The WHOLE area is = 1
so 1 - .543 = .457
The picture shows two sizes of shipping boxes with measurements in inches. The boxes are rectangular prisms.
There are two rectangular prisms. Prism 1 has a height of 10 inches, length of 20 inches and a width of 7 inches. Prism 2 is smaller and to the right of Prism 1. Prism 2 has a height of 4 inches, length is 20 inches and width is 4 inches.
Marcus shipped 1 of the larger boxes and 2 of the smaller boxes. Which equations show the total volume of the boxes Marcus shipped? Select the three equations that apply.
A.
(20×10×7) + [2× (20×4×4)]
B.
(20×10×7) × [2× (20×4×4)]
C.
(20×10×7) + (20×4×4) + (20×4×4)
D.
(20+10+7) + (20+4+4) + (20+4+4)
E.
(20×10×7) + [2+ (20×4×4)]
F.
(200×7) + [2× (80×4)] 3 /
The equations which show the total volume of the boxes Marcus shipped are as follows:
A. (20 × 10 × 7) + [2× (20 × 4 × 4)]
C. (20 × 10 × 7) + (20 × 4 × 4) + (20 × 4 × 4)
F. (200 × 7) + [2 × (80 × 4)]
How to calculate the volume of a rectangular prism?Mathematically, the volume of a rectangular prism can be calculated by using this equation:
Volume = L × W × H
Where:
L represents the length of a rectangular prism.H represents the height of a rectangular prism.W represents the width of a rectangular prism.For rectangular prism 1, the volume is given by:
Volume 1 = L × W × H
Volume 1 = 20 × 7 × 10
Volume 1 = 200 × 7
Volume 1 = 1,400 cubic inches.
For rectangular prism 2, the volume is given by:
Volume 2 = L × W × H
Volume 2 = 20 × 4 × 4
Volume 2 = 80 × 4
Volume 2 = 320 cubic inches.
Since Marcus shipped 1 of the larger boxes and 2 of the smaller boxes, the total volume of the boxes Marcus shipped is given by these three (3) equations:
(20 × 10 × 7) + [2× (20 × 4 × 4)](20 × 10 × 7) + (20 × 4 × 4) + (20 × 4 × 4)(200 × 7) + [2 × (80 × 4)]Read more on rectangular prism here: https://brainly.com/question/27130617
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calculate the sum of the infinite series S ∞=5-3+9/5-…A.)not possible B.)31/8C.)25/8D.)21/8
Looking at the series, we have a geometric sequence, where the first term is a1 = 5 and the common ratio is q = -3/5.
(This ratio can be calculated by dividing one term by the term before)
To find the sum of an infinite geometric sequence, we can use the formula below:
[tex]S_{\infty}=\frac{a_1}{1-q}[/tex]Since a1 = 5 and q = -3/5, we have:
[tex]S_{\infty}=\frac{5}{1-(-\frac{3}{5})}=\frac{5}{1+\frac{3}{5}}=\frac{5}{\frac{8}{5}}=5\cdot\frac{5}{8}=\frac{25}{8}[/tex]Therefore the correct option is C.
Use Gaussian elimination to solve.The burkes pay their babysitter $5 per hour before 11p.m. and $7.50 after 11 p.m. One evening they went out for 5 hours and paid the sitter $35.00. Whag time did they come home?
Given the information on the problem, we can write the following system of equations:
[tex]\begin{cases}x+y=5 \\ 5x+7.5y=35\end{cases}[/tex]then, we can write the following augmented matrix:
[tex]\begin{bmatrix}{1} & {1} & {5} \\ {5} & {7.5} & {35}\end{bmatrix}[/tex]now, if we multiply by 5 the first row and then substract it from the second row, we get:
[tex]\begin{bmatrix}{1} & 1{} & {5} \\ {5} & {}7.5 & 35{}{}\end{bmatrix}\rightarrow\begin{bmatrix}{1} & 1{} & 5{} \\ {0} & {2.5} & {10}{}\end{bmatrix}[/tex]notice that from the second equation, we can find the value of y:
[tex]\begin{gathered} 2.5y=10 \\ \Rightarrow y=\frac{10}{2.5}=4 \\ y=4 \end{gathered}[/tex]now that we have that y = 4, we can use this value on the first equation to find x:
[tex]\begin{gathered} x+4=5 \\ \Rightarrow x=5-4=1 \\ x=1 \end{gathered}[/tex]now, we have that the babysitter worked 1 hour before 11pm and 4 hours after 11 pm,then, the Burkes came home at 3 am
1. An angle in a right triangle is identified as θ. If the tangent of θ equals one, what must be true about the triangle side lengths?
A. The side adjacent to theta is half the length of the hypotenuse.
B. The side opposite to theta is longer than the adjacent side.
C. The sides opposite and adjacent to theta are the same length.
D. The side adjacent to theta is longer than the adjacent side.
If the tangent of θ equals one (1), the true statement about the right-angled triangle side lengths is that: C. The sides opposite and adjacent to theta are the same length.
What is a tangent?In geometry, a tangent is also referred to as a tangent line and it can be defined as a straight line that touches a plane curve at a specific point.
Mathematically, the tangent of an angle is given by this expression:
Tanθ = Opp/Adj
Where:
Opp represents the opposite side of a right-angled triangle.Adj represents the adjacent of a right-angled triangle.θ is the angle.For this right-angled triangle, the tangent of the angle (θ) is given by:
Tanθ = Opp/Adj = 1
Opposite/Adjacent = 1
Cross-multiplying, we have:
Opposite = Adjacent
In conclusion, the opposite side length of this right-angled triangle is equal to its adjacent side length.
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I NEEEED HELLPPP LIKE ASAP I ONLY GOT 5 MINS TO DO THIS AND MORE WILL GIVE BRAINLY AND A LOT OF POINTS
Answer:
I can see that (0, 2) is the solution to this equation because that is the point where the lines intersect.
Step-by-step explanation:
[tex] - 3x + 2 = \frac{1}{2} x + 2[/tex]
[tex] - 3x = \frac{1}{2} x[/tex]
[tex]x = 0[/tex]
[tex]y = 2[/tex]
Evalúe the limit. Show steps
After evaluating the limit we have came to find that the limit of [tex]\frac{x + 1}{x^2 -4x +4}[/tex] as x approaches 2 is ∞
What is limit?A limit in mathematics is the value that a function, sequence, or index approaches as an input, or an index, approaches a certain value. The definitions of continuity, derivatives, and integrals depend on limits, which are fundamental to calculus and mathematical analysis.
The idea of a limit of a sequence is further generalized to include the idea of a limit of a topological network, and it is closely related to the concepts of limit and direct limit in category theory.
A limit of a function is typically expressed in formulas as
[tex]{\displaystyle \lim _{x\to c}f(x)=L,}[/tex]
To find the limit we will use L'Hôpital's Rule
Find the derivative
[tex]\lim_{x \to 2} \frac{1 + 0}{2x -4 +0}[/tex]
Evalúe 2 as x
⇒ [tex]\frac{1 + 0}{2x -4 +0}[/tex]
⇒ [tex]\frac{1}{2(2) -4 +0}[/tex]
⇒ [tex]\frac{1}{0}[/tex]
⇒ ∞
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Find the value of x:
Answer: it should be 5
we can multiply 3x4 to get twelve so it must be the same for the other one
So 5x4=20
Step-by-step explanation:
have a great day!
Answer:
5
Step-by-step explanation:
12/4 = 3. 20/4 = 5
Side 12 divided by side 3 is four. You know four is now your key. Side 12 divided by 4 is Side 3. Side 20 divided by 4 is 5. So 5 is your answer.
Hope this helps! :)
Select the correct answer.
Which expression gives the same result as
4
Σ (5(1/3)i)?
i=0
The correct answer is [B]
Binary and unary operations are the two most popular forms of operations. Trigonometric functions and negation are examples of unary operations that use only one value. Contrarily, binary operations, which include addition, subtraction, multiplication, division, and exponentiation, only accept two values. Here the same expression will be 5 ∑([tex]([/tex][tex]\frac{1}{3}[/tex][tex])^{i}[/tex]
What is mathematical operation?Mathematical objects other than numbers can be used in operations. Logic operations like and, or, and not can be used to combine the logical values true and false. It is possible to add and subtract vectors. Utilizing the function composition operation, it is possible to combine rotations by first performing the first rotation and then the second. The binary operations union and intersection as well as the unary operation of complementation are operations on sets. Composition and convolution are two operations on functions.
Not all possible values of the domain may be covered by an operation's definition. For instance, it is impossible to square the roots of negative integers or divide by zero in real numbers. An operation's domain of definition, also known as the active domain, is the set of values for which the operation is specified. However, the set of real values obtained by the operation is its codomain of definition, active codomain, image, or range. The set that contains the values created is referred to as the codomain. [failed to verify] For instance, only non-negative numbers are produced by the squaring operation when applied to the real numbers; the set of real numbers is the codomain, but the non-negative numbers are the range.
4
∑(5[tex]([/tex][tex]\frac{1}{3}[/tex][tex])^{i}[/tex])
i=0
4
∑(5[tex]([/tex][tex]\frac{1}{3}[/tex][tex])^{i}[/tex])= (5[tex]([/tex][tex]\frac{1}{3}[/tex][tex])^{0}[/tex])+(5[tex]([/tex][tex]\frac{1}{3}[/tex][tex])^{1}[/tex])+(5[tex]([/tex][tex]\frac{1}{3}[/tex][tex])^{2}[/tex])+(5[tex]([/tex][tex]\frac{1}{3}[/tex][tex])^{3}[/tex])+(5[tex]([/tex][tex]\frac{1}{3}[/tex][tex])^{4}[/tex])
0
= 5([tex]([/tex][tex]\frac{1}{3}[/tex][tex])^{0}[/tex])+([tex]([/tex][tex]\frac{1}{3}[/tex][tex])^{1}[/tex])+([tex]([/tex][tex]\frac{1}{3}[/tex][tex])^{2}[/tex])+([tex]([/tex][tex]\frac{1}{3}[/tex][tex])^{3}[/tex])+([tex]([/tex][tex]\frac{1}{3}[/tex][tex])^{4}[/tex])
4
= 5 ∑([tex]([/tex][tex]\frac{1}{3}[/tex][tex])^{i}[/tex])
i=0
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Four times a number added to 7 times the number is 55. What is the number?
Answer:
12
Step-by-step explanation:
4xA+7=55
using PEMDAS multiplication comes first
A4+7=55
A4=55-7
A4=48
A=48/4
A=12
check:
4x12+7=12
across which axis was point F reflectedF(10, -5) - F'(-10, -5)
y-axis
Explanations:When a figure is reflected about any axis, the coordinate of that axis still remains the same, but the coordinate of the other axis is negated
For example:
If the point A(x, y) is reflected about the x-axis, the reflected image becomes A' (x, -y)
If the point A(x, y) is reflected about the y axis, the reflected image becomes A'(-x, y)
In this exercise, the point F(10, -5), after reflection, becomes F' (-10, -5)
Since the y-axis still remains -5 after reflection, this means that the point F was reflected across the y-axis.
Solve for x.
8x = 4x-32
Use front end rounding to round each number. Then add the rounded
numbers to get an estimated answer. Finally, find the exact answer.
35.25
197.39
+ 4.835
Step-by-step explanation:
A35 (whole number )35.3 (1 decimal place)35.28 (2 decimal place)B197 (whole number )197.4 (1 decimal place)197.39 (2 decimal place)C5 (whole number )4.8 (1 decimal place)4.89 (2 decimal place)WORTH 35PTS
what is equivalent to (3^4)^6÷3^2
The required expression equivalent to the given expression is 3²² .
An expression in mathematics is said to be algebraic if it was constructed using integer variables, constants, and algebraic operations (addition, subtraction, multiplication, division and exponentiation by an exponent that is a rational number)
However, transcendental numbers like such and e are not algebraic because they are not created from integer constants and algebraic operations.While the definition of e necessitates an infinite number of algebraic operations, the generation of is frequently expressed as a geometric expression.If an expression can be reduced to a reasonable fraction using the features of arithmetic operations, it is said to be rational (commutative properties and associative properties of addition and multiplication, distributive property and rules for the operations on the fractions).Given : the expression of the form ( 3 ⁴ ) ⁶ ÷ 3²
Simplifying we get:
= ( 3 ⁴ ) ⁶ ÷ 3²
= 3⁽²⁴⁻²⁾
= 3²²
Therefore the required expression equivalent to the given expression is
3²² .
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Chris bought 18.4 gallons of gasoline. There are approximately 3.8 liters in 1 gallon.
Which measurement is closest to the number of liters of gasoline Chris bought?
14.6 L
6.21 L
69.92 L
4.84 L
Calculate the future value of the $9,000 earning 9% interest compounded quarterly for 8 years round answer to two decimal places
Compound interest formula:
A = P (1 + r/n )^nt
Where:
A = future vale
P= Principal investment = 9,000
r = interest rate in decimal form = 9/100 = 0.09
n = number of compounding periods = 4
t = years = 8
Replacing:
A = 9000 ( 1 + 0.09/4)^ (4*8)
A = 9000 (1.0225)^32
A= 18,342.93
The future value is $18,342.93
I need help with question 4. The model is at the very top, no need to answer the question that has been scribbled out.
Step 0 ---- 2
2+1
step 1 ------ 3
3+3
step 2 --------- 6
6+5
step 3 ----------11
11 + 7
step 4 ------------ 18
terms are 2, 3, 6,11, 18
There is an increment of odd numbers from a preceding term
2 increase to 3 by the first odd i.e 1
3 increase to 6 by the next odd i.e 3
6 increase to 11 by the next odd i.e 5
Therefore 11 will increase by the next odd, i.e 7
Thus, 11 + 7 = 18
7 * the smaller of two consecutive even integers is the same as -248 minus 6 * the larger integer. find the integers
7 * the smaller of two consecutive even integers is the same as -248 minus 6 * the larger integer. find the integers
let
x ----> the smaller of two consecutive even integers
x+2 -----> the second integer
so
7x=-248-6(x+2)
solve for x
7x=-248-6x-12
7x+6x=-248-12
13x=-260
x=-20
the second number is
-20+2=-18
the numbers are -20 and -18Riley bought boxes of thank you cards and get well cards. The thank you cards came in boxes of 9 and the get well cards came in boxes of 4. Riley bought 5 boxes and got a total of 30 cards. How many boxes of each type of card did she buy?
Riley bought 2 boxes of thank you cards and 3 boxes of get well cards.
What is linear equation?
A linear equation is a first-order (linear) term plus a constant in the algebraic form y=mx+b, where m is the slope and b is the y-intercept. Sometimes, the aforementioned is referred to as a "linear equation of two variables," where x and y are the variables.
Let Riley have bought x boxes of thank you cards and y boxes of get well cards.
Therefore according to the question,
x + y = 5.......(1)
9x + 4y = 30........(2)
Multiplying equation 1 with 4 we get.
4x + 4y = 20.......(a)
Subtracting (a) form (2) we get:
5x = 10
=> x = 2
Putting the value of in (1) we get y= 3
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Find the volume of each figure. Round your answers to the nearest whole, if necessary.
Given that
The figure is of a cone and we have to find the volume of the cone.
Explanation -
The diameter of the cone is 22km and the height is also 22 km.
So the radius will be
radius = r = d/2 = 22/2 km = 11 km
Hence, r = 11 km and h = 22 km
The formula for the volume of the cone will be
[tex]Volume=\frac{1}{3}\times\pi\times r^2h[/tex]On substituting the values we have
[tex]\begin{gathered} V=\frac{1}{3}\times\pi\times11^2\times22\text{ km}^2 \\ \\ V=\frac{1}{3}\times\frac{22}{7}\times11\times11\times22\text{ km}^2 \\ \\ V=\frac{58564}{21}\text{ km}^2=2788.7\text{ km}^2 \end{gathered}[/tex]So B is the correct option.
Final answer -
Hence the final answer is 2788 sq km.yall what is 2 divided by 4/9
Answer:
4.5
Step-by-step explanation:
2/1 x 9/4 = 18/4 = 4.5
Answer:
4.5 is your answer
Step-by-step explanation:
hope it helps
Pedro has scores of 95, 84, 68, 92 after four tests. what score must he make on his fifth test to have an average of 78 or greater?
Answer:
51 or above
Step-by-step explanation:
He already averages more then 78. But he at least needs a 51 in order for him to average 78. For him to get more than that he just needs a 52 or higher.
78 x 5 = 390
95 + 92 + 84 + 68 = 339
339/ 4 = 84.75 ( just to let you know the average before #5 )
390 - 339 = 51
51 is that last score needed
Sam's mother has entered a 10K race. Sam and his family want to show their support of their mother, but they need to
figure out where they should go along the race course. They also need to determine how long it will take her to run the
race so that they will know when to meet her at the finish line. Previously, his mother ran a SK race with a time of
hours. Assume Sam's mother ran the same rate as the previous race in order to complete the chart.
Create a table that shows how far Sam's mother has run after each half hour from the start of the race, and graph it on
the coordinate plane to the right.
Mother's 10K Race
Time
(H. in hours)
Distance Run
(D, in kilometers)
Distance (in kilometers)
12
10
0
0.5
1
1.5
Time (in hours)
3.5
The specific thing about this graph is it forms a straight line, and it extends to point of origin. The time x is on the x-axis and the distance y is on the y-axis. The coordinates on the graph are the same as the pairs in the table. (2, [tex]6\frac{2}{3}[/tex]) means Sam's mother ran [tex]6\frac{2}{3}[/tex] km in 2 hours.
What is a proportional relationship?Relationships between two variables are called as proportional when you see that their ratios are equal. One variable in a proportional connection is always a constant value multiplied by the other. "Constant of proportionality" is the name that is given to this constant.
What is a proportional relationship graph?The graph of a proportionate connection is a straight line that passes through the origin and rises steadily. The graph's unit rate can be represented by the point on this graph.
The graph depicting this proportional relationship formed in the table can be seen in the image attached.
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The complete question is:
"Sam's mother has entered a 10K race. Sam and his family want to show their support of their mother, but they need to
figure out where they should go along the race course. They also need to determine how long it will take her to run the
race so that they will know when to meet her at the finish line. Previously, his mother ran a SK race with a time of
hours. Assume Sam's mother ran the same rate as the previous race in order to complete the chart.
Create a table that shows how far Sam's mother has run after each half hour from the start of the race, and graph it on
the coordinate plane to the right.
a) What are some specific things you notice about this graph?
b) What is the connection between the table and the graph?
c) What does the ordered pair (2,6 [tex]\frac{2}{3}[/tex]) Represent in the context of this problem?"