Answer: x = (b-c)/d
Step-by-step explanation:
xd + c = b
xd = b-c
x = b-c/d
13 is 50% of what number?
Answer: 26
Step-by-step explanation:
Is this example an
Expression or Equation?
3(x + 6) - 4y
A. Expression
B. Constant
C. Equation
D. Variable
I WILL GIVE 50 POINTS IF YOU HELP ME SOLVE THIS PLS HELP
Carl is buying a shirt that costs $24.00. It is on sale for 50% off. what will the price of the shirt be?
A. 19.00
B. 50.00
C. 12.00
D. 14.00
Please help I’ll give brainly if you explain :)
Answer: C
Step-by-step explanation:
We need to turn 50% into a fraction first to make it easier,
50% is equal to 1/2 because 50/100 is simplified to 1/2.
Now let's multiply!
24 x 1/2 = 24/2 = 12/1 = 12
Need help with finding the mean (MATH 7th GRADE)
Answer:
mean = 49.25
Step-by-step explanation:
mean = sum of all the number ÷ amount of number
mean = 56 + 21 +55 + 30 + 34+ 76 + 40 + 82 = 394 ÷ 8
mean = 49.25
mean absolute deviation = (56- 49.25) + (21 - 49.25) + (55 -49.25) + (30 - 49.25) + (34 -49.25) + (76 -49.25) + (40 - 49.25) + (82- 49.25) / 8
mad= 6.75 + -28.25 + 5.75 + -19.25 + -15.25 + 26.75 + -9.25 + 32.75 / 8
mad = 0/8
mad= 0
brainliest is appreciated
please help me please please help please
Answer:
y = -6
Step-by-step explanation:
The line this equation creates passes through (5,-6) and is perpendicular to the Y-axis.
Your friend, Susannah, manages a sandwich shop. She collects data on the number of turkey sandwiches sold per day for a week. Explain to her how to find the mean, median, mode, and range of the number of turkey sandwiches sold. How would that be helpful when she orders new turkey sandwich makings? Which measure do you think would be the most helpful for her and why? Number of sandwiches sold per day
Monday: 73
Tuesday: 88
Wednesday: 85
Thursday: 88
Friday: 99
Saturday: 134
Sunday: 129
Your response must have MORE than 5 complete sentences for this assignment!
Susannah's data are illustration of measure of central tendencies
(a) The mean
To calculate the mean, she needs to divide the total number of turkey sandwiches sold, by the number of days.
The total is:
\(\mathbf{Total = 73 +88+85+88+99+134+129}\)
\(\mathbf{Total = 696}\)
The number of days is:
\(\mathbf{Day = 7}\)
So, the mean is:
\(\mathbf{Mean =\frac{Total}{Days}}\)
\(\mathbf{Mean =\frac{696}{7}}\)
\(\mathbf{Mean =99.4}\)
Hence, the mean number of turkey sandwiches sold is 99.4
(b) The median
To calculate the median, she needs to arrange the data in ascending or descending order, then select the middle item.
In ascending order, we have: 73, 85, 88, 88, 99, 129, 134
The middle item is 88
So:
\(\mathbf{Median = 88}\)
Hence, the median number of turkey sandwiches sold is 88
(c) The mode
This is the data that occurs most.
From the dataset, 88 appears twice (more than others).
So:
\(\mathbf{Mode = 88}\)
Hence, the mode number of turkey sandwiches sold is 88
(d) The range
This is the difference between the highest and least data
From the dataset,
The highest is 134, and the least is 73
So:
\(\mathbf{Range =134 - 73}\)
\(\mathbf{Range =61}\)
Hence, the range of turkey sandwiches sold is 61
The measure that would be most helpful is the median, because it is not affected by outliers.
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Nikki rides her bike ⅕ mile every ¼ hour. How far will she ride per hour?
Answer:
Step-by-step explanation:
Let's make a proportion:
1 / 5 mile - 1 / 4 hour
X mile - 1 hour
X = 1·(1/5) / (1/4)= (1/5) · 4 = 4 / 5 mile
mations to Determine Similarity
What steps would you take to determine if these
figures are similar? Check all that apply.
Use a scale factor of 2.
Multiply the vertices of polygon ABCD by
O Translate the intermediate image 4 units down.
Perform two different dilations.
Reflect the intermediate image.
The steps which you would take to determine if these figures are similar include the following:
2. Multiply the vertices of polygon ABCD by 1/2.
5. Reflect the intermediate image.
What is a dilation?In Mathematics and Geometry, a dilation is a type of transformation which typically transforms the dimension (size) or side lengths of a geometric object, without affecting its shape.
Therefore, the dimension or side lengths of the dilated geometric object would be stretched or compressed (shrunk) depending on the scale factor that is applied.
By critically observing the graph representing polygon ABCD, we can logically deduce that a sequence of transformations that would polygon ABCD (pre-image) onto polygon A"B"C"D" (image) is a dilation by a scale factor of 1/2 and a reflection of intermediate image.
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Missing information:
The question is incomplete and the complete question is shown in the attached picture.
Which equation does the graph of the systems of equations solve?
According to the equation does the graph of the systems of equations solve is B.
1/3x+1=2x-4 is correct.
What is Graph?A graph is a structure consisting of a group of items, some of which are "linked." The objects are mathematical abstractions known as vertices, and each pair of connected vertices is known as an edge.
According to the given data:It is evident from the graph that the two lines intersect at the location:
(3, 2).
To put it another way,
at x =3, y = 2
The point where two lines intersect is:
(x, y) = (3, 2) (3, 2).
Now,
x = 3 is the point of the x-coordinate
y = 2 is the point of the y-coordinate
Now, examine the equation, 1/3x+1=2x-4, to see if it contains the correct x-coordinate value.
(1/3)x + 1 = 2x -4
subtracting 1 from both side:
(1/3)x + 1 -1 = 2x -4 -1
We get:
(1/3)x = 2x -5
subtract 2x from both sides:
(1/3)x -2x = 2x -5 -2x
We get:
-(5/3)x = -5
on simplifying the equation we get:
x = 3
the value of x = 3
this show that the 1/3x+1=2x-4 is correct.
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Which number line represents the solution to 5x < 30? F t 8 0 2 4 6 10 G =N + 4 H 8 0 6 10 H + 0 + 8 2 4 6 10 J + 2 + 4 0 6 8 10
Answer:
Line H, the third option
Step-by-step explanation:
First, find the value of x
5x < 30Divide both sides by 55x/5 < 30/5x < 6X is strictly less than 6, so the answer cannot include 6
This means the answer needs to have an open circle as an endpointThe less than sign (<) tells you the line should be pointing to the left
Give the equation of the line parallel to a line through (-3, 4) and (-5, -6) that passes through the origin. y = 5x
Answer:
y = 5x
Step-by-step explanation:
First, find the slope of the first equation by doing rise/run
This gets you -10/-2 or 5
A parallel line will have the same slope. Since it goes through the origin, the y-intercept and b value will be zero
The equation will be y = 5x
Factor the expression 49t4 - 25 using the polynomial identity (x2 - y2) = (x - y)(x + y)
Answer:
Step-by-step explanation:
49t^4-25
(7t^2-5)(7t^2+5)
Evaluate the limits
\(x > \ln(x)\) for all \(x\), so
\(\displaystyle \lim_{x\to\infty} (\ln(x) - x) = - \lim_{x\to\infty} x = \boxed{-\infty}\)
Similarly, \(\displaystyle \lim_{x\to\infty} (x-e^x) = - \lim_{x\to\infty} e^x = \boxed{-\infty}\)
We can of course see the limits are identical by replacing \(x\mapsto e^x\), so that
\(\displaystyle \lim_{x\to\infty} (\ln(x) - x) = \lim_{x\to\infty} (\ln(e^x) - e^x) = \lim_{x\to\infty} (x - e^x)\)
You can also rewrite the limands to accommodate the application of l'Hôpital's rule. For instance,
\(\displaystyle \lim_{x\to\infty} (x - e^x) = \ln\left(\exp\left(\lim_{x\to\infty} (x - e^x)\right)\right) = \ln\left(\lim_{x\to\infty} e^{x-e^x}\right) = \ln\left(\lim_{x\to\infty} \frac{e^x}{e^{e^x}}\right)\)
Using the rule, the limit here is
\(\displaystyle \lim_{x\to\infty} \frac{(e^x)'}{\left(e^{e^x}\right)'} = \lim_{x\to\infty} \frac{e^x}{e^x e^{e^x}} = \lim_{x\to\infty} \frac1{e^{e^x}} = 0\)
so the overall limit is
\(\displaystyle \lim_{x\to\infty} (x - e^x) = \ln\left(\lim_{x\to\infty} \frac{e^x}{e^{e^x}}\right) = \ln(0) = \lim_{x\to0^+} \ln(x) = -\infty\)
Matilda measures the perimeter of her bedroom to determine how many feet of border she needs to go around the tops of the walls.
Two walls are each 96 inches long, and two walls are each 3 yards long. She pays $30 for border that costs $1 per foot.
What are steps that you should take to determine if Matilda bought the correct amount of border? Select all that apply.
The steps that Matilda should take to determine if she bought the correct amount of border are:
Convert yard to feetCalculate the number of feet of border she boughtCompare the number of feet of border Maltida bought to the the perimeter of the room. Did Maltida buy the correct amount of border?The first step is to convert inches to feet
1 inch = 1/12 feet
96 / 12 = 8 feet
The second step is to convert yards to feet
1 yard = 3 feet
3 x 3 = 9 feet
Now, determine the perimeter of the room: 9 + 9 + 8 + 8 = 34 inches
The fourth step is to determine the feet of border bought: $30 / $1 = 30
34 > 30 thus the border is not enough
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Elyas is on holiday in Greece.
He wants to buy a pair of sunglasses for €90
The exchange rate is €1 = £0.875
Elyas says, "The sunglasses cost less than £70"
Using a suitable approximation, show that Elyas is wrong.
Answer:
To convert euros to pounds, we have to multiply the amount in euros by the exchange rate. So, the sunglasses cost 90 * 0.875 = 78.75 pounds.
To use a suitable approximation, we can round the exchange rate to the nearest hundredth, which is 0.88. This makes the calculation easier and gives a close estimate of the actual value.
Using the rounded exchange rate, the sunglasses cost 90 * 0.88 = 79.2 pounds.
We can see that both the exact and the approximate values are greater than 70 pounds, so Elyas is wrong. The sunglasses cost more than 70 pounds
Step-by-step explanation:
Find the probability that a day in Dayton will include rain or snow.
The probability that a day in Dayton will include rain or snow is 38%.
Let's assume that there are 365 days in a year (not considering leap years), and we are aware that Dayton typically experiences 25 days of snow per year, in addition to 110 days of rain. We can add the total number of rainy and snowy days in Dayton and then divide that total by the number of days in a year to determine the likelihood that a given day will be either one of those things:
probability of rain or snow = \(\frac{110+25}{365}\)
=0.38
The probability that a day in Dayton will have rain or snow is 0.38 or 38%.
The question is incomplete, complete question is " Dayton is a small town in Ohio, which receives 110 days of rain and 25 days of snow per year. Ignoring leap years, Find the probability that a day in Dayton will include rain or snow."
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what is 8 x 1 ????????????
Answer:8
Step-by-step explanation:8x1=8
which expression is a cube root of -2i?
The cube root of -2i,
⇒ ∛2[ cos(π/6) + i sin(π/6) ]
We can represent -2i in polar form as,
r(cosθ + i sinθ)
by computing its magnitude and angle.
The magnitude of -2i is 2
Since the absolute value of any imaginary number is equal to its magnitude.
To find the angle θ,
We can use the fact that the tangent of an angle is equal to the ratio of the opposite side to the adjacent side.
In this case,
The opposite side is -2 and the adjacent side is 0.
Therefore, we have tanθ = -2/0, which is undefined.
However,
We can use the fact that the cube root of a complex number is equal to the cube root of its magnitude times exp(iθ/3) to find the cube root of -2i.
So, the cube root of -2i is equal to the cube root of 2 times exp(iθ/3).
Now, we need to find the value of θ/3. Since θ is undefined,
we will represent it as π/2 + 2πn,
where n is any integer.
So, θ/3 = (π/2 + 2πn)/3 = π/6 + 2πn/3.
Therefore, the cube root of -2i is equal to
⇒ ∛2 [ cos(π/6 + 2πn/3) + i sin(π/6 + 2πn/3) ]
Now put n = 0
⇒ ∛2[ cos(π/6) + i sin(π/6) ]
This is the final form of the cube root of -2i in the required form.
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The demand and supply functions for bikes are
The total surplus at the equilibrium market base on the demand and supply functions for bikes is B. 2341.
How to illustrate the information?It should be noted that from the information, the demand and supply function has been given.
First, we need to calculate the equilibrium point. This will be:
900e ^-0.1q = 3e^0.9q
e^q = 900 / 3
e^q = 300
q = In (300) = 5.70378
Therefore, we will substitute q into the function. This will be:
p = 3e^0.9In(300)
o = 508.78041
The producer surplus will be:
= (508.78041 - 3e^0.9q)dq
= 2341
Therefore, the total surplus at the equilibrium market is 2341.
In conclusion, the correct option is B.
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How do i find the area of a semicircle
PLS HELP WILL GIVE BRAINLIEST IF CORRECT (NO LINKS)
Find the measure of arc BC.
Answer: A 129
Step-by-step explanation:
Because the 2 chords are the same (lines in the circle), the 2 arcs are the same create an equation that makes them equal
3x+24 = 4x -11 >bring x to one side by subtracting both sides by 3x
24 = x -11 > add both sides by 11
35 = x
Now that we have solved for x you need to plug that back into the equation for BC
BC= 4x-11
BC = 4(35) - 11
BC = 140 - 11
BC = 129 >A
Suppose that a scarf company estimates that its monthly cost is
C(a)=500x2 + 300 and its monthly revenue is
R(x) = -0.523 +6002-200+300, where x is in thousands of
scarves sold. The profit is the difference between the revenue and the cost.
What is the profit function, P(x)?
The profit function is P(x) = -500.523x^2 + 600x - 200.
To find the profit function, P(x), we need to subtract the cost function, C(a), from the revenue function, R(x).
Given:
Cost function: C(a) = 500x^2 + 300
Revenue function: R(x) = -0.523x^2 + 600x - 200 + 300
Profit function, P(x), is obtained by subtracting the cost function from the revenue function:
P(x) = R(x) - C(a)
P(x) = (-0.523x^2 + 600x - 200 + 300) - (500x^2 + 300)
Simplifying the expression:
P(x) = -0.523x^2 + 600x - 200 + 300 - 500x^2 - 300
P(x) = -500x^2 - 0.523x^2 + 600x + 300 - 200 - 300
P(x) = -500x^2 - 0.523x^2 + 600x - 200
Combining like terms:
P(x) = (-500 - 0.523)x^2 + 600x - 200
Simplifying further:
P(x) = -500.523x^2 + 600x - 200
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help fast plz with that
Which statement best describes the expression 4y + 9? (1 point)
1) 9 divided by 4 times y
2) 9 times y divided by 4
3) 4 times y divided by 9
4) 4 divided by 9 times y
Answer:
9 is added by 4 times y is the correct answer.
The given option don't describe the expression 4y+9
Home health aide trades in old car a gas mileage of 18 1/4 miles per gallon.starting with a full tank of gas in her new car she travels 390 7/8 miles it takes 14 3/4 gallons to fuel the tank. How many miles further can she travel on a full tank of gas with the new car if the gas tank hold 30 gallons of gas
Answer:
The new car travels 247.5 miles more than the old one on 30 gallons of gas.
Step-by-step explanation:
The fuel consumption of the old car was:
\(car_{old} = 18 + \frac{1}{4} = \frac{73}{4} \text{ miles per gallon}\)
The new one can travel a distance of 390 7/8 miles by using 14 3/4 gallons of fuel, therefore the consumption is:
\(car_{new} = \frac{390.875}{14.75} = 26.5 \text{ miles per gallon}\)
If the tank holds 30 gallons, on the old car the distance would be:
\(distance_{old} = 18.25*30 = 547.5 \text{ miles}\)
On the new one it will be:
\(distance_{new} = 26.5*30 = 795 \text{ miles}\)
So the new car is able to travel 247.5 miles more than the old one on 30 gallons of gas.
What is the solution to the equation -2x - 10 = 2/3(x+1)?
The solution to the equation is x = -4.6.
We must first isolate the variable x on one side of the equation before simplifying both sides.
Taking the left side first:
-2x - 10
To eliminate the fraction on the right side, multiply by 3:
-6x - 30
Let's now condense the right side:
2/3(x+1)
2/3x + 2/3
We now have:
-6x - 30 = 2/3x + 2/3
By multiplying both sides by the least common multiple of the denominators, which is 3, we may first eliminate the fraction and then isolate x:
-18x - 90 = 2x + 2
Next, on each side, we'll combine similar terms:
-18x - 2x = 2 + 90
-20x = 92
We'll finally find the value of x by multiplying both sides by -20:
x = -4.6
Hence, the answer to the equation is x = -4.6.
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match the base to the corresponding height
Answer:All equal
Step-by-step explanation:
The sum of 8 and a number is 9
Answer:
The sum of 8 and 1 is 9.
lol
Step-by-step explanation:
Which street is parallel to 2nd St?
A. 1st St.
B. 3rd St.
C. 4th St.
Answer:
it a
Step-by-step explanation:
A - on the po boyds at a emase the foot, 1, of building. He. Observes an obje- et on the top, P of the building at an angle of ele- building of 66 Aviation of 66 Hemows directly backwards to new point C and observes the same object at an angle of elevation of 53° · 1P) |MT|= 50m point m Iame horizontal level I, a a
Answer:
53\(x_{123}\) == 134 cf
Step-by-step explanation:
A - on the po boyds at a emase the foot, 1, of building. He. Observes an obje- et on the top, P of the building at an angle of ele- building of 66 Aviation of 66 Hemows directly backwards to new point C and observes the same object at an angle of elevation of 53° · 1P) |MT|= 50m point m Iame horizontal level I, a a
The height of the building is approximately 78.63 meters.
The following is a step-by-step explanation of how to solve the problem. We'll need to use some trigonometric concepts and formulas to find the solution.
Draw a diagram of the situation described in the problem to get a better understanding of the problem. The diagram would have a right-angled triangle with angle of elevation of 66° at the bottom left vertex and another angle of elevation of 53° at the bottom right vertex. The object on top of the building is at the vertex of the triangle. Point M and I on the diagram are points on the horizontal line of sight and on the ground respectively. We can label the diagram with the following values:Angle of elevation from point A = 66°Angle of elevation from point P = 53° Length of line segment AM = h Length of line segment MP = x Length of line segment IP = y Length of line segment MT = 50m. We'll use these values to calculate the length of h, which is the height of the building.Use the tangent ratio to find x:tan 66° = h / x => x = h / tan 66°. Use the tangent ratio to find y:tan 53° = h / y => y = h / tan 53°.We know that x + y = 50, so substituting the expressions for x and y from step 3 gives:h / tan 66° + h / tan 53° = 50h = 50 tan 66° tan 53° / (tan 53° + tan 66°) ≈ 78.63 m.Therefore, the height of the building is approximately 78.63 meters.
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