Answer:
8 quarters equal 2 dollars 11 dimes is a dollar and 10 cents so 3 dollars and 10 cents
Step-by-step explanation:
Which values are solutions to this inequality
x ≤ 4
Answer:
The solution to this inequality is 4 or anything less than 4
so x could equal 4, 3, 2, 1, 0, -1, -2, and so on
Step-by-step explanation:
Which equation represents an inverse variation?
O y = 2x
Oy-
O yo
X
O y = -5x
Here is a regular 10-sided polygon. Work out the value of x. Show your working clearly Diagram NOT accurately drawn
Answer:
144
Step-by-step explanation:
what is y+26(9-x)=290
Answer:
y = 56 + 26x
Step-by-step explanation:
Round 1.6 to the nearest whole number
Answer:
The Answer is 2
Step-by-step explanation:
The rule is 4 or less let it rest. 5 or more raise the score. 6 is greater than 5 so you raise it to two
How many paths are there from $A$ to $B,$ if you travel along the edges? You can travel along each edge at most once, but you can pass through the same point more than once. (You can pass through $B,$ as long as you end up at the point $B.$) [asy] unitsize(1.5 cm); draw((0,0)--dir(60)--(1,0)); draw((0,0)--(1,0)); draw((0,0)--dir(-60)--(1,0)); label("$A$", (0,0), W); label("$B$", (1,0), E); [/asy]
Answer:
There are $\boxed{3}$ paths from $A$ to $B.$
l, m and n are colliner LM=MO, MO=MN
1. L , M and N are collinear
2. Given
3. LM = MN
4. Bisector theorem
Which of the following is a rational equation? Choose the correct equation below. A. ½ x – 1/3 = 4-x B. 0.7x-3=0.09(x - 5) C. 6/x -1 = 4/x-2 D. 4-2(x-1)=x+3
A rational equation is an equation that includes one or more rational expressions. A rational expression is a fraction where both the numerator and denominator are polynomials. The correct option is B. 0.7x-3=0.09(x - 5)
An equation that includes one or more rational expressions is called a rational equation. A rational expression is a fraction in which both the numerator and denominator are polynomials.
Let's consider each equation:
A. ½ x – 1/3 = 4-xB. 0.7x-3
=0.09(x - 5)C. 6/x -1
= 4/x-2D. 4-2(x-1)
=x+3A
is a linear equation and does not include any rational expressions, so it is not a rational equation. B includes a rational expression (0.09(x - 5)) and is therefore a rational equation. C includes two rational expressions, so it is a rational equation. D is a linear equation and does not include any rational expressions, so it is not a rational equation.
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which equation below would have no solutions?
(1) 8x+2=5x-3
(2) 4 ( x + 5) = 4x +20
(3) 7x + 8 = 7x-2
4( 6 ( x-1) = 3x +3
what is 4x56(88+99 red
Answer:
41888
Step-by-step explanation:
4*56(88+99)=
4*56(187)=
4*10472=
41888
for the following vectors use your matrix multiplication skills to find the same vector in the rotated coordinate system given by the angle theta. • ????⃗1
the vector in the rotated coordinate system, v_rotated, is [cos(θ) * x1 - sin(θ) * y1, sin(θ) * x1 + cos(θ) * y1].
To find the vector in the rotated coordinate system, we can use a rotation matrix. The rotation matrix represents the transformation of coordinates from one coordinate system to another through a rotation.
The rotation matrix for a two-dimensional vector in a counterclockwise rotation by an angle θ is:
R = | cos(θ) -sin(θ) |
| sin(θ) cos(θ) |
To apply this rotation matrix to a vector, we multiply the vector by the rotation matrix. Let's say the vector we want to rotate is v1 = [x1, y1].
v_rotated = R * v1
Using matrix multiplication:
v_rotated = | cos(θ) -sin(θ) | * | x1 |
| sin(θ) cos(θ) | | y1 |
Simplifying the multiplication:
v_rotated = [cos(θ) * x1 - sin(θ) * y1, sin(θ) * x1 + cos(θ) * y1]
So, the vector in the rotated coordinate system, v_rotated, is [cos(θ) * x1 - sin(θ) * y1, sin(θ) * x1 + cos(θ) * y1].
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Select the correct answer.
Which graph shows the solution region of this system of inequalities?
y ≥3(0.8)^x
y ≥ x² - 5
The solution to the inequality are the region in the shaded area and the graph is attached
How to determine the solution to the inequalityFrom the question, we have the following parameters that can be used in our computation:
y ≥3(0.8)^x
y ≥ x² - 5
Represent properly
y ≥ 3(0.8)^x
y ≥ x² - 5
Next, we make a plot of the system to determine the solution
The shaded area in the plot represent the solution to the inequality
In this case, one of the coordinates in the shaded area has a coordinate of (0, 5)
None of the options represent the shaded area (see attachment)
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Annika is planning an event for which the total cost must be no more than $400. Annika plans to spend $180 on decorations and she wants to hire a DJ at the rate of $35 per hour. Which inequality correctly shows Annika’s spending in terms of h, the number of hours that the DJ can be at the party?
the correct inequality that shows Annika's spending in terms of h is 35h + 180 ≤ 400.To express Annika's spending in terms of h, the number of hours the DJ can be at the party, we can set up an inequality by considering the total cost.
Let's represent Annika's spending on the DJ as 35h, where h is the number of hours. Additionally, we know Annika plans to spend $180 on decorations. Therefore, the total cost should be no more than $400.
The inequality can be written as:
35h + 180 ≤ 400
This inequality states that the cost of hiring the DJ (35h) plus the cost of decorations ($180) should be less than or equal to $400.
Therefore, the correct inequality that shows Annika's spending in terms of h is 35h + 180 ≤ 400.
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Suppose you are interested in the determinants of college tuition prices. You collect data on a random sample of 500 colleges and universities in the U.S. in 2015. Then you estimate the following model using OLS, where tuition is measured in $1,000s: Tuition=7+4+Rank-0.20*Size+8*Private-0.4*LibArts Rank is the college's rank, ranging from 1 to 5, according to US News and World Report. Size is the number of students who attend the college, measured in 1,000s. Private is a binary variable that equals 1 if the college is private and equals 0 if the college is public. LibArts is a binary variable that equals 1 if the college is a liberal arts college and equals 0 otherwise. Standard error for betalhat=2 Standard error for betalhat=0.7 Standard error for beta2hat=0.12 Standard error for beta3hat=2 Standard error for beta4hat=0.6 R-squared=0.20 What is the predicted cost for a student who attends a private liberal arts college, which has 1,500 students, and a rank of 4.5? Suppose the student in question 1 switches from her college to a public, non-liberal arts college. Her new college has 15,000 more students than her old college, and its rank is 0.5 lower. How much money does she save in tuition?
The predicted cost for a student attending a arts college with 1,500 students and a rank of 4.5 can be calculated using the given regression model: Tuition = 7 + 4*Rank - 0.20*Size + 8*Private - 0.4*LibArts.
In this case, Rank = 4.5, Size = 1.5 (since it's measured in 1,000s), Private = 1 (since it's a private college), and LibArts = 1 (since it's a liberal arts college). Plugging these values into the model, the predicted tuition cost would be: Tuition = 7 + 4*(4.5) - 0.20*(1.5) + 8*1 - 0.4*1 = $26.1 thousand.
If the student switches from her current private liberal arts college to a public, non-liberal arts college with a rank 0.5 lower and 15,000 more students, we need to adjust the Size and Rank variables accordingly. Assuming the student's current college is still private, the new values would be Rank = 4.5 - 0.5 = 4 and Size = 1.5 + 15 = 16.5 (since it's measured in 1,000s). With the new values, we can calculate the predicted tuition cost for the public college: Tuition = 7 + 4*(4) - 0.20*(16.5) + 8*0 - 0.4*0 = $22.4 thousand.
To determine how much money the student saves in tuition, we calculate the difference between the predicted costs of the two colleges: $26.1 thousand - $22.4 thousand = $3.7 thousand. Therefore, by switching from her current private liberal arts college to a public, non-liberal arts college with a lower rank and larger size, the student saves $3.7 thousand in tuition.
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Stella is going to a carnival that has games and rides. Each game costs $2.50 and each ride costs $4. Stella spent $52.50 altogether at the carnival and the number of rides she went on is twice the number of games she played. Write a system of equations that could be used to determine the number of games Stella played and the number of rides Stella went on. Define the variables that you use to write the system.
Answer:
g = number of gamesr = number of rides2.50g +4.00r = 52.50r = 2gStep-by-step explanation:
You want a system of equations describing Stella's cost of going to the carnival, where she spent $2.50 on each game, and $4 on each ride for a total of $52.50. The number of rides is twice the number of games.
Variable definitionsIt is often convenient to use mnemonic variable names, so we choose ...
g = the number of games Stella played
r = the number of rides Stella went on
System of equationsThe total cost of tickets is ...
2.50g +4.00r = 52.50
The relation of numbers of games and rides is ...
r = 2g
__
Additional comment
It is convenient to substitute for r in the first equation to give ...
2.50g +4.00(2g) = 52.50
10.50g = 52.50 . . . . . . . . . simplify
g = 5 . . . . . . . . . . . . . . divide by 10.50; games Stella played
r = 2(5) = 10 . . . . . . the number of rides Stella went on
2409÷61 as a fraction
Answer:
así es es una fracción si necesita la respuesta me avisa
The equation for line c can be written as y=–67x–1. line d is parallel to line c and passes through (10,–9). what is the equation of line d?write the equation in slope-intercept form. write the numbers in the equation as simplified proper fractions, improper fractions, or integers.
Answer:
y = -6/7x - 3/7 or 7y = -6x - 3
Step-by-step explanation:
I'm guessing you mean line c: y = -6/7x - 1
Parallel lines have same slope => line d will have slope = -6/7
y = mx + b
-9 = -6/7(10) + b
-9 = -60/7 + b
b = 60/7 - 9 = 60/7 - 63/7 = -3/7
y = -6/7x - 3/7
or 7y = -6x - 3
a car tire has a radius of 10.4 inches what distance will the tire travel after 20 rotations
Answer:
is A
Step-by-step explanation:
I got 60p and 70p but that doesn't work, so i need help pls. again, pretty simple question but mt brain isn't working
Step-by-step explanation:
let's reffer to:
gumbo (x)
raspberry (y) so,
8x + 9y =14. 3 (1)
6x + 3y = 8.1 (2)
devide (2) by 3
2x + y = 2.7
y = 2.7 - 2x (3)
substitute 3 in 1
8x + 9(2.7 - 2x) = 14.3
8x + 24.3 - 18x = 14.3
10 x = 10
x = 1 (ANS)
and y = 0.7 (ANS)
Answer:
Hello There the correct answer to this is The first one is 1029.6 Because you need to multiply 8 x 9 then it will be 72 and then multiply 72 x 14.30 it will be 1029.6 it will the same the Second one is 145.8 Because you you need to multiply the first one multiply 6 x 3 which that 18 the multiply 18 x 8.10 which that will be 145.8 SO both of these answer are the same.
Hope It Helps!
ItsNobody
y'all can you answer these? 8th grade algebra 1-10 Q's??
Answer:
1. slope= 3/4x Y-intercept= 7
2. slope= 5x Y-intercept=8
3. slope= -2x Y-intercept=0
4. slope= 0 Y-intercept=12
*the table ones are difficult to type out but sorry if it doesnt make sense*
5. X Y=3x+4. Y
0 y=3(0)+4 4
1 y=3(1)+4 7
2 y=3(2)+4 10
3 y=3(3)+4 13
4 y=3(4)+4 16
6. X y=1/2x-1. Y
-2 y=1/2(-2)-1 -2
1 y=1/2(1)-1 1.5
4 y=1/2(4)-1 2
6 y=1/2(6)-1 3
9 y=1/2(9)-1 3.5
7. X. Y=5-2x Y
0 y=5-2(0) 5
1 y=5-2(1) 3
2 y=5-2(2) 1
3 y=5-2(3) -1
4 y=5-2(4) -3
I believe you need the graph for the last 3
Answer:
This is 8th grade? I learned this in 7th grade
Step-by-step explanation:
1. Slope= 3/4x (MAKE SURE TO PUT THE X) Y intercept = +7 (MAKE SURE YOU PUT A + IF IT IS POSITIVE AND - IF NEGATIVE
2. Slope = 5x Y intercept = 8 (I think this was a trick question?)
3. Slope = -2x Y intercept = 0 (So just keep it empty or say 0 if your teacher is like that)
4. Slope = x Y intercept = +12
I can't see the full question so sadly I can't help with the otherones
hi! please help in math!
i need the solution/explanation on how you got the answer
(y + 3) = -8(x - 4)
what is the slope?
Answer:
Slope: -8/3
Step-by-step explanation:
y + 3 = -8 (x-4)
y+3 = -8x + 32
y = -8/3x + 29
Therefore, the slope is -8/3.
The slope is :
↬ -8Solution:
Givens :
\(\bf{(y+3=-8(x-4)}\)To determine the slope, it's important to know the form of the equation first.
The forms are:
Slope Intercept (y = mx + b)Point slope (y-y₁) = m(x - x₁)Standard form (ax + by = c)This equation matches point slope perfectly.
\(\rule{350}{4}\)
Point slopeIn point slope, m is the slope and (x₁, y₁) is a point on the line.
Similarly, the slope of \(\bf{y+3=-8(x-4)}\) is -8.
Extra info
The point of the line is \(\bf{(4,-3)}\).
Hence, the slope is -8.A woman needs to seed 80% of her lawn with grass seed. The lawn measures 10 meters in length and 25 meters in width. If 1,000 seeds have to be sown per square meter, how many seeds will she plant? 50,000 seeds100,000 seeds125,000 seeds200,000 seeds250,000 seeds
The lawn measures 10 meters in length and 25 meters in width:
Step 1 : Find the Area of the lawn
\(\text{Area = Length x width}\)\(\begin{gathered} \text{Area = Length x width} \\ \text{Length = 10 meters } \\ \text{width = 25 meters} \\ \text{Area = (10 x 25)m}^2 \\ \text{Area = 250 m}^2 \end{gathered}\)Step 2: The woman need to seed 80% of the lawn
\(\begin{gathered} 80\text{ \% of the lawn with 200square metres} \\ =\frac{80}{100}x250m^2 \\ =0.8x250m^2 \\ =200m^2 \end{gathered}\)Step 3: Since it is 1,000 seeds per square meter
and the woman needs to seed 200 square meters
That would be
\(\begin{gathered} 1000\text{ s}eeds\text{ per square meter x 200 square meter} \\ =\frac{1000\text{ s}eeds}{m^2}x200m^2 \\ =200,000\text{ s}eeds \end{gathered}\)Hence the correct answer is Option D
Bring the following fractions to the given denominator. Check if the domain of the fraction changed. If yes, state the changes. p/p-2 to a denominator of 4-p^2
The domain of the expression changed from p≠2 to p≠-2
50 pts btw
Answer:
it did not change because the expression p-2 still remains the denominator
Determine the slope between the two points: (-9,5) and (3,2)
Answer:
Let (x1, y1) = (-9, 5) and (x2, y2) = (3, 2) be the two points.
The formula for finding the slope between two points is:
m = (y2 - y1) / (x2 - x1)
Substituting the values, we get:
m = (2 - 5) / (3 - (-9))
m = -3 / 12
m = -1/4
Therefore, the slope between the points (-9, 5) and (3, 2) is -1/4.
Answer:
M = -1/4
Step-by-step explanation:
(y2-y1)/(x2-x1) = Slope
we use the x and y components of the given coordinates to find out the answer.
Therefore,
(2-5)/(3-(-9)) = -1/4
A boat leaves port and follows a course of N72°E at 6 knots for 3 hr and 20 min. Then, the boat changes to a new course of S27°E at 12 knots for 5 hr. How far is the boat from port?
A boat leaves port and follows a course of N72°E at 6 knots for 3 hours and 20 minutes. Then, it changes to a new course of S27°E at 12 knots for 5 hours. We need to determine the distance of the boat from the port.
To find the distance of the boat from the port, we can break down the boat's journey into two segments and calculate the distance traveled in each segment.
In the first segment, the boat travels at a speed of 6 knots for a duration of 3 hours and 20 minutes, which is equivalent to 3.33 hours. The course N72°E indicates that the boat is traveling 72° east of north. Using the formula d = v * t, where d represents the distance, v represents the velocity, and t represents the time, we can calculate the distance traveled in the first segment as 6 knots * 3.33 hours = 19.98 nautical miles.
In the second segment, the boat travels at a speed of 12 knots for a duration of 5 hours. The course S27°E indicates that the boat is traveling 27° east of south. Using the same formula, we calculate the distance traveled in the second segment as 12 knots * 5 hours = 60 nautical miles.
To find the total distance from the port, we can use vector addition. The boat's displacement in the north-south direction is 0 (since the boat changed from a northern course to a southern course), and the displacement in the east-west direction is the sum of the distances in each segment: 19.98 nautical miles + 60 nautical miles = 79.98 nautical miles.
Therefore, the boat is approximately 79.98 nautical miles from the port.
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2 − ( − 4 ) + 3 + ( − 6 ) − ( − 2 )
Answer
5
Step-by-step explanation:
2-(-4)+3+(-6)-(-2)
6+3+(-4)
9+(-4)
5
What is the recursive rule for the sequence shown in the graph?
The recursive rule for the sequence in the graph is aₙ = aₙ₊₁ + 4
Recursive rule are the rules that continually takes a previous number and changes it to get to a next number.
It gives first term or terms of sequence and describes how term is related to previous term with an equation.
Looking at the graph ,
taking first two point ,n = 1 and n = 2
At n = 1 , a(n) = 13
At n = 2 , a(n) = 9
so , 9 = 13 - 4
we can write it as,
a₂ = a₁ - 4
Hence , recursive formula for sequence :
aₙ₊₁ = aₙ - 4
bring aₙ to the left
=> aₙ = aₙ₊₁ + 4 is required recursive formula
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For the function y=(x^3 −4)(x^2 −3x+1) at (2,−4) find the following. (a) the slope of the tangent line (b) the instantaneous rate of change of the function
For the function y = (x^3 − 4)(x^2 − 3x + 1), at the point (2,−4), (a) the slope of the tangent line is 32, and (b) the instantaneous rate of change of the function is also 32.
To find the slope of the tangent line at the point (2,−4), we need to take the derivative of the function with respect to x and evaluate it at x = 2. The derivative of y with respect to x can be found using the product rule and simplifying:
dy/dx = (x^2 - 3x + 1)(3x^2 - 4) + (x^3 - 4)(2x - 3)
= 3x^4 - 13x^3 + 14x^2 - 11x + 4
Evaluating the derivative at x = 2:
dy/dx = 3(2)^4 - 13(2)^3 + 14(2)^2 - 11(2) + 4
= 48 - 104 + 56 - 22 + 4
= -18
Therefore, the slope of the tangent line at the point (2,−4) is -18.
The instantaneous rate of change of the function is equal to the slope of the tangent line at any point. Thus, the instantaneous rate of change of the function at (2,−4) is also -18. This means that for a small change in x near 2, the corresponding change in y is approximately -18.
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Problems 1-2, which symbol should be used to make the values true; > or <
1)
-12
2
2) -2
-7.
Answer:
1.) <
2.) >
Step-by-step explanation: 2 is greater than -12 and -2 is greater than -7.
ASAP HELP
Find the variance and standard deviation of the data set below:
0 0.107
1 0.352
2 0.400
3 0.141
If the standard deviation of a set of data is 6, then the value of variance is 36
The formula for determining variance is variance = √Standard deviation
Variance of a set of data is equal to square of the standard deviation.
If the standard deviation of a set of data is 6 then we get variance by putting the value of standard deviation in the formula
variance = √Standard deviation
Take square root on both sides
Standard deviation² = 6²
Standard deviation= 36
Hence, standard deviation of a set of data is 6, then the value of variance is 36
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