Answer:
(b) For each minute the washing machine runs, it uses 3/5 of a gallon of water.
Step-by-step explanation:
You want to know the meaning of g = 3/5m when g is gallons used by a washing machine in a period of m minutes.
InterpretationThe problem statement tells you m represent minutes and g represents gallons, so m=1 would tell you the gallons used in 1 minute:
g = 3/5(1) = 3/5
The machine uses 3/5 gallon of water for each minute it runs.
It takes a word processor 24 minutes to word process and spell check 10 pages find how long it takes her to word process and spell check 55 pages It takes the word processor ? Minutes
Given,
It takes a word processor 24 minutes to word process and spell check 10 pages.
Consider,
Time taken by the word processor to word process and spell check 55 pages is x.
According to the question,
\(\begin{gathered} \frac{10}{24}=\frac{55}{x} \\ 10x=24\times55 \\ 10x=1320 \\ x=\frac{1320}{10} \\ x=132\text{ minutes} \end{gathered}\)Time taken by the word processor to word process and spell check 55 pages is 132 minutes.
Find the area of the shaded sector of the circle. Give the exact answer in terms of straight pi.
A circle has a central angle that measures 120 degrees and a radius of 8.
fraction numerator 48 straight pi over denominator 9 end fraction units squared
fraction numerator 64 straight pi over denominator 3 end fraction units squared
fraction numerator 32 straight pi over denominator 3 end fraction units squared
fraction numerator 16 straight pi over denominator 9 end fraction units squared
The area of the sector that has a central angle of 120 degrees and radius of 8 units is 64π / 3 units²
Area of a sectorThe area of a sector is defined as follows:
area = ∅ / 360 × πr²
where
r = radius∅ = central angleTherefore,
r = 8
∅ = 120°
Hence,
area of the sector = 120 / 360 × π × 8²
area of the sector = 1 / 3 × π × 64
area of the sector = 64π / 3 units²
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Two pentagons are similar. The larger pentagon has an area of 135 cm2 The smaller pentagon has a side length of 8cm and the corresponding length for the larger is 24cm. What is the area of the smaller pentagon?
The area οf the smaller pentagοn is 45 cm².
What is pentagοn?A pentagοn is a geοmetric twο-dimensiοnal shape with five sides and five angles. The pentagοn definitiοn states that it is a 2-dimensiοnal pοlygοn that has 5 sides and 5 angles. Observe the figure given belοw which shοws the shape οf a pentagοn.
Since the twο pentagοns are similar, we knοw that their cοrrespοnding sides are in prοpοrtiοn.
Let's call the area οf the smaller pentagοn "A", and let's use the prοpοrtiοn οf the cοrrespοnding sides tο set up an equatiοn relating the areas οf the twο pentagοns:
(cοrrespοnding side length οf larger pentagοn) / (cοrrespοnding side length οf smaller pentagοn) = (area οf larger pentagοn) / (area οf smaller pentagοn)
We knοw that the cοrrespοnding length fοr the larger pentagοn is 24 cm and the cοrrespοnding length fοr the smaller pentagοn is 8 cm, sο we can substitute thοse values intο the equatiοn:
24 / 8 = 135 / A
Simplifying, we get:
3 = 135 / A
Tο sοlve fοr "A", we can multiply bοth sides by A:
3A = 135
Dividing bοth sides by 3, we get:
A = 45
Therefοre, the area οf the smaller pentagοn is 45 cm².
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A function is defined by f(x)=x/4. What is f(-8)
O-2
O-1/2
O1/2
O 2
f(x) = x/4
so
f(-8) = -8/4 = -2
answer
f(-8) = -2
Step-by-step explanation:
PLS HELP I WILL GIVE BRAINLESTTT
1. -g + 2(3+g) = -4(g+1)
2. 0.6(4-2x)=20.5-(3x+10)
3. 1/2(-4+6n) = 1/3n+2/3(n+9)
4. 1/5(5x-5) + 3x=-9 (1/3x + 4)
The given values are given below:
g = -2.x = 6.72.n = 12.x = -11/7.How to solveDistribute and combine like terms: -g + 6 + 2g = -4g - 4.
Then, simplify g = -4g - 10.
Finally, solve for g: g = -2.
To solve this, we have to distribute and combine like terms: 2.4 - 1.2x = 20.5 - 3x - 10.
Simplify 1.8x = 12.1.
Solve for x: x = 6.72.
Distribute and simplify: -2 + 3n = n/3 + 2n/3 + 6.
Combine like terms: 2n/3 = 8.
Solve for n: n = 12.
Finally, to get the answer, the next step would be to distribute and simplify: x - 1 + 3x = -3x - 12.
Combine like terms: 7x = -11. Solve for x: x = -11/7.
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Will choose brainlist
Answer:
-200
Step-by-step explanation:
Which of the following graphs is the same as y=log1/2^x
West of a city, a certain eastbound route is straight and makes a steep desdent toward the city. the highway has a 10% grade, which means that its slope is -10/100. driving on this road, you notice from elevation signs that you have descended a distance of 1000 ft. what is the change in your horizontal distance in miles?
The change in the horizontal distance in miles is 1.8939 miles.
The slope formula is used to calculate the inclination or steepness of a line. It finds application in determining the slope of any line by finding the ratio of the change in the y-axis to the change in the x-axis. The slope of a line is defined as the change in the "y" coordinate with respect to the change in the "x" coordinate of that line.
Given,10% = \(\frac{-10}{100}\) steep change route is straight So the equation of a straight line
y - \(y_{1}\)=m (x -\(x_{1}\))
vertical change, y-\(y_{1}\) = 1000 ft
So, 1000 \(\frac{-10}{100}\) (x-\(x_{1}\) ),Horizontal change
(x-\(x_{1}\) ) = 10,000 feet
1 mile = 5280feet
So in miles,
Horizontal change, (x-\(x_{1}\) ) = \(\frac{10000}{5280} miles\\\) = 1.8939 miles
So, the change in the horizontal distance in miles is 1.8939 miles.
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Find the value of n.
3n + 12
n+ 14
Answer:
Is the question 3n+12 = n +14?
Step-by-step explanation:
If so the ANSWER is n=1
3n+12=n+14
3n-12=n+14
3n=n+2
-n -n
2n=2
n=1
8 – 5x = 53 what would the answer be? I’m a little stumped
Answer:x=-9 I hope this helps
Step-by-step explanation:
8x-5=53
Move the constant to the right-hand side and change its sign
Like this
-5x=53-8
Subtract the numbers
-5x=45
Divide both sides of the equation by 5
-x=9
Change the signs on both sides of the equation which will be
x=-9
The value of a piece of property is growing at a rate of 3.5% annually. If the property was worth $125,000 when it was purchased, which equation could be used to determine the value of the property,x , years after it was purchased?
A.Y = 125000(3.5)x B. y = 125000(0.0035)x
C. y = 125000(1.035)x D. y = 125000(0.965)x
C.) Y = 125000(1.035)x
Step-by-step explanation:
I took the test and got it right
Suppose we flip four coins simultaneously: a penny, a nickel, a dime, and a quarter. What is the probability that at least $15$ cents worth of coins come up heads
The probability that at least $15$ cents worth of coins come up heads is
P(H)=1/16
This is further explained below.
What is the probability that at least $15$ cents worth of coins come up heads?Generally, We are doing a simultaneous toss of four coins. How likely is it that every coin will land with the head side facing up?
It has been established by everyone who has participated so far that the solution is 116, which can be written as
(1/2)4=1/16.
On the other hand, a person who is just starting out can benefit from another method to see things.
I'm going to go ahead and make the assumption that each coin is balanced and that each side has an equal chance of facing up.
Each coin has the potential to exist in either of two states (heads or tails). Therefore, there are
2^4 = 16 different permutations (states) that the four coins may be in together as a group.
Only one of these possible permutations results in all heads. This results in the correct value of 1/16.
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Find the surface area, including the floor, of his tent
Answer:
The surface area of the ten t including the floor is 52.8 m².
Step-by-step explanation:
We are given that,
Shaun's tent consists of 3 rectangles and 2 triangles.
1. The dimensions of the rectangles are 5 × 3 meters.
Since, Area of the rectangle = Length × Width
i.e. Area of 3 rectangles = 3 × Length × Width
i.e. Area of 3 rectangles = 3 × 5 × 3 = 45 m²
Thus, area of the 3 rectangles is 45 m².
2. The dimensions of the triangles are base= 3 meter and height= 2.6 meter
As, Area of the triangle =
i.e. Area of 2 triangles =
i.e. Area of 2 triangles =
i.e. Area of 2 triangles =
i.e. Area of 2 triangles = 7.8 m²
Thus, area of 2 triangles is 7.8 m².
So, the total surface area of the prism = Area of rectangles + Area of triangles
i.e. Total surface area = 45 + 7.8 = 52.8 m²
Hence, the surface area of the ten t including the floor is 52.8 m².Step-by-step explanation:
Answer:
21.4
Step-by-step explanation:
Khan Academy
measure the length of a ordinary sheet of 8x11 paper in metric units (if you do not have a metric measuring device, you can measure in us units and use a free online conversion tool to change to metric units). what is the area of the sheet of paper in correct metric units?
The area of the sheet of paper in correct metric units is 602.6c\(m^{2}\).
What is an area?A region's size on a plane or curved surface is expressed by the term "area," which is a mathematical concept. As opposed to surface area, which refers to the area of an open surface or the boundary of a three-dimensional object, plane region or plane area refers to the area of a form or planar lamina. Area can be thought of as the volume of material, at a particular thickness, required to create a model of the shape, or as the volume of paint required to paint the surface in a single coat. It is equivalent to the volume of a solid or the length of a curve in two dimensions (a three-dimensional concept).
Calculations:
The length of a 8 X 11 paper in metric unit is 27.9 cm and width of 8 X 11 paper in metric unit is 21.6 cm.
Area of sheet of paper=length*width
=27.9*21.6
=602.6 c\(m^{2}\)
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A system of linear equations is shown below, where A and B are real numbers.
3x + 4y = A
Bx – 6y = 15
What values could A and B be for this system to have no solutions?
Answer:
A = 0; B = -9/2
Step-by-step explanation:
To have no solutions, you need parallel lines with equal slopes and different y-intercepts.
3x + 4y = A Eq. 1
Bx - 6y = 15 Eq. 2
In Eq. 1, notice that the coefficient of x is 3/4 of the coefficient of y.
We must have the same ratio for the coefficients in Eq. 2.
B/(-6) = 3/4
4B = -6(3)
4B = -18
B = -9/2
Now we have
3x + 4y = A Eq. 1
-9/2 x - 6y = 15 Eq. 2
How do we change the left side of the second equation into the left side of the first equation? -6/4 = -3/2 and also -9/2 ÷ 3 = -3/2
To change the left side of the second equation into the left side of the first equation, divide the left side by -3/2.
If we divide 15 by -3/2 we get -10.
The equation -9/2 x - 6y = -10 is the same as Eq. 1, so that would create a system of equations with only one equation and an infinite number of answers.
To have no equations, the y-intercepts must be different, so A can be any number other that -10.
Answer: A = 0; B = -9/2
Identify the x-intercepts, vertex, and axis of symmetry of the graph of f(x)=-0.25(x+2)(x+8)
The characteristics of the quadratic function f(x) = -0.25(x + 2)(x + 8) are given as follows:
x-intercepts: x = -8 and x = -2.Vertex: (-2.5, -2.25).Axis of symmetry: x = -2.5.x-interceptsThe x-intercepts of a function are the values of x for which the function is zero, that is:
f(x) = 0.
Hence:
-0.25(x + 2)(x + 8) = 0.
The roots are already factored, as follows:
x + 2 = 0 -> x = -2.x + 8 = 0 -> x = -8.VertexIn expanded form, the function is:
f(x) = -0.25(x + 2)(x + 8)
f(x) = -0.25(x² + 10x + 16)
f(x) = -0.25x² -2.5x - 4
The coefficients are:
a = -0.25, b = -2.5, c = -4.
The x-coordinate of the vertex is given as follows:
\(x_v = -\frac{b}{2a} = -\frac{-2.5}{4(-0.25)} = -2.5\)
Which is also the axis of symmetry of the quadratic equation.
The y-coordinate of the vertex is:
\(y_v = -\frac{b^2 - 4ac}{4a} = -\frac{(-2.5)^2 - 4(-0.25)(-4)}{4(-0.25)} = -2.25\)
Hence the vertex is:
(-2.5, -2.25).
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and the other answer that you didnt see is ( 2+3×2+5+6+7+9 units ) .
pls give me the answer .. and ty <3 .
There is a rule for finding perimetre of all polygons that perimetre is the sum of all the side's lengths ; according to this rule add the length of the sides of this polygon and you'll get the answer , the answer is the choice that you've written ( 2+3×2+5+6+7+9 ) or ( 2+3+3+5+6+7+9 ) both are correct because 3+3 is same as 3×2
perimetre is 2+3×2+5+6+7+9 = 35 units
HOPE IT HELPS
Suppose that Rachel studied for the Graduate Management Admission Test (GMAT) using a well-known preparation class and was thrilled to receive a total score of 770. Her friend Eric, however, thinks she would have scored just as well without the class. To test the efficacy of the class, they obtain a small but random sample of 19 test results from other students using the same class. This sample's average is 568.56 with a standard deviation of 116.72. In comparison, the national average was 550.12. Assume the population's results are normally distributed but that its standard deviation is not known. Rachel and Eric decide to perform a two-tailed t ‑test at a significance level of α = 0.05 . How many degrees of freedom should they use in their calculations?
df=___
They shοuld use 18 degrees οf freedοm in their calculatiοns fοr the t-test.
What is Degrees οf freedοm?Degrees οf freedοm (df) is a cοncept used in statistics that represents the number οf values in a calculatiοn that are free tο vary. In variοus statistical tests, degrees οf freedοm determine the variability and influence the accuracy οf the test results.
Tο calculate the degrees οf freedοm fοr the t-test, we need tο determine the sample size οf the randοm sample. In this case, the sample size is given as 19.
The degrees οf freedom (df) fοr a twο-sample t-test can be calculated using the fοrmula:
df = (n₁+ n₂) - 2
where n₁ and n₂ are the sample sizes οf the twο grοups being cοmpared.
In this scenariο, we have οne sample frοm Rachel (size n₁= 1) and the randοm sample οf οther students (size n₂= 19). Therefοre, substituting the values intο the fοrmula, we have:
df = (1 + 19) - 2
= 20 - 2
= 18
Sο, they shοuld use 18 degrees οf freedοm in their calculatiοns fοr the t-test.
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DA = 0.0
Trapezoid ABCD is congruent to trapezoid EFGH, and the side lengths of ABCD are given. Find GH.
A. 9.0
B. 14.0
C. 20.0
D. cannot be determined
Answer:
The answer is D - cannot be determined
Step-by-step explanation:
Answer:
B. 14.0
Step-by-step explanation:
just took the test
(Theoretical Probability MC)
Joseph has a bag filled with 3 red, 3 green, 9 yellow, and 10 purple marbles. Determine P(not green) when choosing one marble from the bag.
92%
88%
24%
12%
The probability of not selecting a green marble is equal to the total number of non-green marbles in the bag divided by the total number of marbles in the bag.
What is the meaning of probability and it will be calculated?To calculate the probability: there are three green marbles out of a total of twenty-five marbles, so the probability of selecting a green marble is 3/25.
The likelihood of not selecting a green marble is then 1 - 3/25 = 22/25.
This is equal to 22/25 * 100 = 88% as a percentage.
As a result, P(not green) = 88%
Probability denotes the possibility of something happening. It is a mathematical branch that deals with the onset of a random event. The value ranges from zero to one. Probability has been tried to introduce in mathematics to predict the probability of events occurring. Probability is defined as the degree to which something is likely to occur. This is the fundamental probability theory, which is also used in probability distribution, in which you will learn about the possible outcomes of a random experiment.
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PLS HELP ILL GIVE BRAINILEST TO CORRECT ANSWER
A = 2x2 + 3x + 5
C = 3x2 - 7x + 12
If A + B = C, what must B equal?
1s2 + 10s2 - 21st =
2. 5st - st - t2 =
3. x^{2} + x^{2} + x^{3} =
4. 6x - 4x + 2=
5. 9x - 3s - 2t=
6. 87x + 8x - 1 =
7. 3x + 6x - 2 =
8. 8s - 4s + 3s =
9. 12 + x - 11x =
10. 12x + 24x - 3x - 4 =
11. 14t + 8t - 12t =
12. 17g + 14g - 6g + g =
13. 13 + 12 - 12 + 13x =
14. 17s - 3s + 3s =
15. 14t - 12t + t = what is the answer?
By simplifying the equation we get,
\(1) 11s^{2} - 21st\)
\(2)4st -12\)
\(3) 2x^{2} + x^{3}\)
4) \(2(x-1)\)
5) 9x-3s-2t
6) 95x-1
7) 9x -2
8) 7s
9) 12 - 10x
10) 33x -4
11) 11t
How to simplify the equation?simplifying the following equation by combining the like terms. To simplify expressions, first, expand any brackets, then multiply or divide any terms and, if appropriate, utilize the rules of indices, then gather like terms by adding or removing, and finally rewrite the expression.
\(1)\\1s^{2} + 10s^{2} - 21st\\11s^{2} - 21st\)
\(2)\\5st -st -12\\4st -12\)
\(3) \\x^{2} +x^{2} +x^{3} \\2x^{2} + x^{3}\)
4)
\(6x - 4x \\2(x-1)\)
5)
9x-3s-2t
9x-3s-2t
6)
87x + 8x -1
95x-1
7) 3x + 6x -2
9x -2
8)
8s - 4s +3s
4s + 3s
7s
9)
12 + x - 11x
12 - 10x
10)
12x + 24x - 3x -4
36x - 3x - 4
33x -4
11)
14t + 8t -12t
22t - 12t
10t
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Bill gets a raise of 10% in his salary find the original salary if his salary after the raise is 4510
PLS HELP MEEE I NEED THE ANSWERS RN
Answers:
x= -10 and y= 16
3y = -6x - 12
3y = -6(-2y+22) -12
3y = 12y - 144
3y + -12y = 12y -144 + -12y
-9y = -144
divide -9 on both sides
y= 16
x= -2y+22
x= -2y+22
x= (-2)(16)+22
x= -10
select all valid relational set operators from the list below. select all that apply. group of answer choices plus union unionize except
The Union of South American Nations (UNASUR) is not a regional alliance.
What is the Union of South American Nations?
The Union of South American Nations was formed in 2008 to further the interests of South American nations. It was an intergovernmental union and that was meant to bring more prosperity to the region.
There are also plans to make UNASUR a single-currency union. The Union of South American Nations was never meant to be a regional alliance however.
complete question is
the union of south american nations (unasur) is considered all of the following except (5 points) group of answer choices a supranational organization an intergovernmental union a single-currency union a regional alliance
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Which equation is quadratic in form? 6(x 2)2 8x 2 1 = 0 6x4 7x2 â€"" 3 = 0 5x6 x4 12 = 0 x9 x3 â€"" 10 = 0.
Quadratic equation is the polynomial equation in which the highest degree of its variable is two.The highest degree of the equation given in option 1 is four and thus it is a quadratic equation. Hence, option 1 is the correct option.
Quadratic EquationQuadratic equation is the polynomial equation in which the highest degree of its variable is two.
Let's check all the given options one by one whether it is a quadratic equation or not.
Option 1-
\(6(x + 2)^2 + 8x + 2 + 1 = 0\)
simplify the above equation using the algebraic formula of the whole square, we get,
\(6(x^2 + 4x+4) + 8(x + 2) + 1 = 0\)
\(6x^2 + 24x+24 + 8x + 16 + 1 = 0\)
\(6x^2 + 32x+41 = 0\)
The highest degree of the equation given in option 1 is four and thus it is a quadratic equation.
Option 2-
\(6x^4+7x^2-3=0\)
The highest degree of the equation given in option 2 is four and thus it is not a quadratic equation. hence option 2 is incorrect.
Option 3-
\(5x^6+x^4+12=0\)
The highest degree of the equation given in option 3 is six and thus it is not a quadratic equation. hence option 3 is incorrect.
option 4-
\(x^9+x^3-10=0\)
The highest degree of the equation given in option 4 is nine and thus it is not a quadratic equation. hence option 4 is incorrect
Hence, the highest degree of the equation given in option 1 is four and thus it is a quadratic equation. Hence, option 1 is the correct option.
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''The world shall know pain'' Me: Pain or Pain???????????????
Answer:
PAIN
Step-by-step explanation:
a. Find an equation of the tangent line at x=a b. Use a graphing utility to graph the curve and the tangent line on the same set of axes. y=x5−9x2+5x+4;a=1 a. The equation of the tangent line at a=1 is y=−8x+9. b. Choose the correct graph below. All graphs are shown in a [−3,3,1] by [−20,20,5] window. A. B.
a. The equation of the tangent line at x = 1 is y = -8x + 9. b. The correct graph is A.
To find the equation of the tangent line at x = a, we need to determine the slope of the tangent line at that point. The slope of the tangent line is equal to the derivative of the function at that point.
Given the function \(y = x^5 - 9x^2 + 5x + 4\), we can find its derivative with respect to x:\(dy/dx = 5x^4 - 18x + 5\).
To find the slope of the tangent line at x = a, substitute a into the derivative:
m = dy/dx evaluated at \(x = a = 5a^4 - 18a + 5\).
To find the y-intercept of the tangent line, we substitute the values of a and m into the point-slope form of a line, y - y1 = m(x - x1), where (x1, y1) is a point on the line (in this case, x1 = a and y1 = f(a)):
y - f(a) = m(x - a).
For a = 1, we have:\(y - f(1) = (5(1)^4 - 18(1) + 5)(x - 1),\)
y - 1 - (-17) = (-8)(x - 1),
y = -8x + 9.
Therefore, the equation of the tangent line at x = 1 is y = -8x + 9.
To graph the curve and the tangent line, use a graphing utility with the given window settings [-3, 3, 1] by [-20, 20, 5]. Plot the function\(y = x^5 - 9x^2 + 5x + 4\)and the tangent line y = -8x + 9 on the same set of axes.
[Graph: Curve \(y = x^5 - 9x^2 + 5x + 4\)and tangent line y = -8x + 9]
In the graph, you will see the curve of the function and a straight line that represents the tangent line at x = 1. The tangent line intersects the curve at the point (1, 1). This visual representation demonstrates the relationship between the curve and its tangent line at that specific point.
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your granola bar has 10 grams of carbohydrates, 4 grams of fat, and 7 grams of protein. how many calories does the granola bar contain?
We get a total of 40 + 36 + 28 = 104 calories in the granola bar. So, this granola bar contains 104 calories. The granola bar in question contains 10 grams of carbohydrates, 4 grams of fat, and 7 grams of protein.
To calculate the total number of calories in the granola bar, we need to know the number of calories per gram for each of these nutrients.
Carbohydrates and protein both provide 4 calories per gram, while fat provides 9 calories per gram. So, to calculate the total number of calories in the granola bar, we can multiply the number of grams of each nutrient by its corresponding number of calories per gram and then add them up.
For carbohydrates, we have 10 grams x 4 calories per gram = 40 calories. For fat, we have 4 grams x 9 calories per gram = 36 calories. And for protein, we have 7 grams x 4 calories per gram = 28 calories.
Adding these together, we get a total of 40 + 36 + 28 = 104 calories in the granola bar. So, this granola bar contains 104 calories.
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Which inequality does this graph show? A. y > 0 B. y < 0 C. D.
Answer: The answer is B) y < 0
Answer: B
Step-by-step explanation: