Answer:
f(x) = -2.5x +5
Step-by-step explanation:
You want the linear function f(x) that is represented by the ordered pairs ...
{(−4, 15), (0, 5), (4, −5), (8, −15)}
SlopeThe slope of the line can be found using the formula ...
m = (y2 -y1)/(x2 -x1)
m = (5 -15)/(0 -(-4)) = -10/4 = -2.5
InterceptThe y-intercept of the line is given by the point (0, 5).
Slope-intercept formThe equation of the line in slope-intercept form is ...
f(x) = mx +b . . . . . . . where m is the slope, and b is the y-intercept
For the values we've identified, the equation of the line is ...
f(x) = -2.5x +5
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Find any points of discontinuity for the rational function below. Describe any vertical or horizontal asymptotes and any holes.
y=(x-1)/(x+2)(x-1)
Please show any steps and formulas used. An explanation would be appreciated. I do not even know what asymptotes are!
Answer:
y = (x-1/x+2)(x-1)
y = -3(x-1)
y = -3x+3
-3x y = 3
x y = -1
x(0) y = -1
y = -1
Step-by-step explanation:
round off to one decimal place please
Answer:
Theta = 37.9 degrees
AC = 11.4
Step-by-step explanation:
Since this is a right triangle, we can use trig functions
tan theta = opp/ adj
tan theta = 7/9
tan ^ -1 tan theta = tan ^-1 (7/9)
theta =37.87498
To 1 decimal place
Theta = 37.9 degrees
We use the Pythagorean theorem to find AC
a^2 + b^2 = c^2
7^2 + 9^2 = AC^2
49+81 = AC^2
130 = AC^2
Taking the square root of each side
sqrt(130) = sqrt(AC^2)
AC = 11.40175
Rounding to 1 decimal place
AC = 11.4
4. Daniel wants to buy cookies for her friend. The radius of a cookie is 5 inches. What is the cookie's circumference?
Answer:
31.4
Step-by-step explanation:
the diameter of the cookie is 5. use 3.14x 5 then multiply that by 2
- Suppose you increase your running speed from 7 m/s to 9 m/s in a period of 2 s. What is
your acceleration?
Step-by-step explanation:
Initial velocity (u) = 7 m/sFinal velocity (v) = 9 m/sTime taken (t) = 2s\( \dashrightarrow \quad \rm {a = \dfrac{v -u}{t} } \\ \)
a denotes accelerationv denotes final velocityu denotes initial velocityt denotes time\( \dashrightarrow \quad \rm {a = \dfrac{9 -7}{2} \; m \: s^{-2}} \\ \)
\( \dashrightarrow \quad \rm {a = \dfrac{2}{2} \; m \: s^{-2}} \\ \)
\( \dashrightarrow \quad \underline{\boxed{\bf {a = 1 \; m \: s^{-2}}}} \\ \) (Answer)
A company made a profit of £735,284.
What is this value rounded to 3 significant
figures?
Give your answer in pounds (£).
Answer:
£735,000
Step-by-step explanation:
we can keep the first three numbers and then round the rest (284). since the first number (2) is less than 5, we round to 0. thus, 284 -> 000 and 735,284 -> 735,000. note that the first 3 numbers do not include a zero, so we don't have to do anything fancy here.
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Insert missing monomials such that each trinomial becomes a perfect square
25b^2+70b+ ...
Answer: the answer to this question is 49
Step-by-step explanation: because (a+b)2 = a2 + 2ab +b2 = Perfect square trinomial
which set of scores has the smallest standard deviation? 5, 11, 42, 22 27, 105, 10, 80 11, 17, 31, 53 145, 143, 145, 147
(b) 145, 143, 145, and 147 must have the smallest standard deviation.
Define standard deviation.A statistical measurement called standard deviation examines how distant a set of numbers is from the mean. Simply said, standard deviation quantifies the degree of dispersion between numbers in a data set. The square root of the variance is used to construct this metric. The standard deviation reveals the degree of data skewedness. It gauges how far away from the mean each observed value is. Approximately 95% of values in any distribution will be within two standard deviations of the mean.
Given,
(b) 145, 143, 145, and 147 must have the smallest standard deviation.
Due to the near proximity of all the values, this particular data set has the lowest standard deviation.
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It took 1700 J of work to stretch a spring from its natural length of 2 m to a length of 6 m. Find the spring constant k. k = Σ N/m
It took 1700 J of work to stretch a spring from its natural length of 2 m to a length of 6 m. The spring constant k will be 212.5 N/m.
The potential energy stored in a spring is given by the formula:
PE = (1/2) kx^2
where k is the spring constant, x is the displacement from the equilibrium position, and PE is the potential energy.
In this problem, the spring is stretched from its natural length of 2 m to a length of 6 m, so the displacement is x = 6 m - 2 m = 4 m.
The work done on the spring is equal to the change in potential energy, so:
Work = PE final - PE initial
1700 J = (1/2) k(4² - (1/2) k(0)²
1700 J = 8k
k = 212.5 N/m
Therefore, the spring constant is 212.5 N/m.
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A train leaves a city traveling due north. A car leaves the city at the same time traveling due west. The car is traveling 15 mi/h faster than the train. After 2 h they are approximately 150mi apart. What is the speed of the train?
F. 30 mi/h
G. 45 mi/h
H. 60 mi/h
I. 75 mi/h
The speed of the train is 45 mi/h hence the correct answer is option G. 45 mi/h.
Let's assume the speed of the train is x mi/h.
Since the car is traveling 15 mi/h faster than the train, the speed of the car is (x + 15) mi/h.
The distance traveled by train in 2 hours is 2x miles (since speed * time = distance).
The distance traveled by the car in 2 hours is 2(x + 15) miles.
According to the Pythagorean theorem, the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides.
In this case, the hypotenuse represents the distance between the train and the car, which is approximately 150 miles.
Using the Pythagorean theorem, we can set up the equation:
\((2x)^2 + [2(x + 15)]^2 = 150^2\\4x^2 + 4(x + 15)^2 = 150^2\)
Simplifying and solving the equation, we find:
\(4x^2 + 4(x^2 + 30x + 225) = 22500\\4x^2 + 4x^2 + 120x + 900 = 22500\\8x^2 + 120x + 900 - 22500 = 0\\8x^2 + 120x - 21600 = 0\)
Dividing the equation by 8 to simplify:
\(x^2 + 15x - 2700 = 0\)
Now we can solve this quadratic equation using factoring, completing the square, or the quadratic formula. Factoring is the easiest method in this case:
(x + 60)(x - 45) = 0
Setting each factor equal to zero, we have:
x + 60 = 0 or x - 45 = 0
x = -60 or x = 45
Since the speed cannot be negative, we discard the solution x = -60.
Therefore, the speed of the train is 45 mi/h hence the correct answer is option G. 45 mi/h.
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The locus of point equidistant from three vertices of a triangle is……………
Answer:
circumcenter
Step-by-step explanation:
You want to know the name of the point equidistant from the vertices of a triangle.
CircumcircleThe circle that passes through the vertices of a triangle is called a "circumcircle". It circumscribes the triangle. Its center is equidistant from all points on the circle, so is equidistant from the triangle's vertices.
The point equidistant from the vertices of a triangle is the circumcenter.
__
Additional comment
The circumcenter is at the intersection of the perpendicular bisectors of the sides of the triangle.
A beach ball has a radius of 10 inches. Round to the nearest tenth
Subtract.
2−12−(−9)
Enter your answer in the box.
Answer:
-1
Step-by-step explanation:
because is the answer
show that if in the inverse function theorem f has k continuous derivatives, then the inverse function g also has k continuous derivatives.
The inverse function theorem states that if f is a differentiable function with a nonzero derivative at a point x, then there exists a neighborhood of x where f is invertible and the inverse function g is also differentiable.
If f has k continuous derivatives, then we can apply the theorem k times to obtain a neighborhood of x where f is k times differentiable and invertible with a k times differentiable inverse function g. To show that g also has k continuous derivatives, we can use induction.
For k = 1, we know that g'(y) exists and is continuous by the inverse function theorem. Now assume that g has k continuous derivatives, and let's show that g has (k+1) continuous derivatives. By the chain rule, we have (g o f)(x) = x, which implies that (g' o f)(x) f'(x) = 1. Differentiating both sides with respect to x, we get (g'' o f)(x) f'(x)^2 + (g' o f)(x) f''(x) = 0. Solving for (g'' o f)(x), we obtain (g'' o f)(x) = - (g' o f)(x) f''(x) / f'(x)^2.
Since f has k continuous derivatives, we know that f'' is continuous. By the induction hypothesis, g' o f has k continuous derivatives. Since f' is nonzero, we know that f' is continuous and hence 1/f'(x)^2 is also continuous. Therefore, (g'' o f) is continuous as a product of continuous functions, and g has (k+1) continuous derivatives.
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A function is defined by f (x) = 6 x + 1.5. What is f(2.5)?
Step-by-step explanation:
6×(2.5)+1.5
15+1.5
16.5
or
f(x)= 6x+1.5
f(2.5)= 6(2.5)+15
f(2.5)=16.5
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16 X +12 over two equals 100
The value of x in the given equation i.e \(\frac{16x+12}{2}=100\) is 11.825
Given that equation \(\frac{16x+12}{2}=100\) and asked to evaluate the value of x in the given equation
⇒ \(\frac{16x+12}{2}=100\)(given equation)
To solve the given equation, need to use the various mathematical operations i.e division and subtraction)
⇒8x+6=100 ( using the operation division)
⇒8x=100-6 (using the operation subtraction)
⇒8x=94
⇒x=\(\frac{94}{8}\)(using the operation division)
⇒x=11.825
By using the mathematical operations i.e division and subtraction the value of x came as 11.825
⇒Therefore, The value of x in the given equation i.e \(\frac{16x+12}{2}=100\) is 11.825
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please help me with math
Answer:
Step-by-step explanation:
a) 4/9*x^4
b) 2/y
pls help meh
6th grade math
Answer:
% = 50
Step-by-step explanation:
% 9
-- = --
100 18
Multiply 9 times 100, that equals 900. Divide 900 by 18, which = 50.
A metal strip is being installed around a rectangular workbench that is 9 feet long and 4 feet wide. If the stripping costs $5 per foot, find the total cost of the stripping.
Total cost=
If the metal strip goes around the bench, then we are looking for the perimeter.
P = 2L + 2W
P = 2(9) + 2(4)
P = 18 + 8
P = 26 feet
Then, we know that the stripping costs $5 per foot, and we need 26 feet of the stripping.
26 x 5 = 130
Total cost = $130
Hope this helps!
In a survey given by camp counselors, campers were
asked if they like to swim and if they like to have a
cookout. The Venn diagram displays the campers'
preferences.
Camp Preferences
S
0.06
0.89
C
0.04
0.01
A camper is selected at random. Let S be the event that
the camper likes to swim and let C be the event that the
camper likes to have a cookout. What is the probability
that a randomly selected camper does not like to have a
cookout?
O 0.01
O 0.04
O 0.06
O 0.07
The probability is 0.96 that a randomly selected camper does not like to have a cookout, based on the given information and the complement rule of probability.
To determine the probability that a randomly selected camper does not like to have a cookout, we need to find the complement of the event C (the event that the camper likes to have a cookout).
Looking at the Venn diagram, we see that the probability of event C is 0.04 (represented by the intersection of circles C and A). Therefore, the probability of the complement of event C (not liking to have a cookout) is equal to 1 minus the probability of event C.
1 - 0.04 = 0.96
Hence, the probability that a randomly selected camper does not like to have a cookout is 0.96.
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Find the area of triangle ABC. Explain your steps in detail
Answer:
37.5 units²
Step-by-step explanation:
Please see the attached pictures for full solution.
*The shoelace method can be used to find the area of any polygons given its coordinates. Ensure that if the polygon has x number of points, (x+1) coordinates are written down in the formula, in which the last coordinate written down is the same as the 1st coordinate. (A triangle has 3 points so 4 coordinates were written down)
In method 2, the length/ height/ base/ breadth can be found by subtracting its x and y coordinates. Alternatively, count the number of squares. Each square would be 1 unit.
Solve the system of equations.
- 5y + 8x = -18
5y + 2x = 58
х=
y =
Answer:
x = 4 and y = 10
Step-by-step explanation:
-5y + 8x = -18
5y + 2x = 58
First you will want to get rid of y from both equations, so you add both equations together.
You will get 10x = 40, then subtract 10 from both sides and you get x = 4.
Now substitute x as 4 in any of the equations to get y.
-5y + 32 = -18
-5y = -50
y= 10
Answer:
x = 4
y = 10
What is a possible solution set to x + 7 ≤ -9 ?
Answer:
Step-by-step explanation:
x + 7 ≤ -9 subtract 7 from both sides
x≤-16 this is your answer
If you're plotting it will be (-∞,-16]
Answer:
Step-by-step explanation:
For this equation, all it is asking is to replace the unknown value with a number that completes the equation. However, the number must make the equation valid. Here is a few examples that could be a valid solution to this problem:
1. -55 + 7 < -9
(you don't need to solve this equation to tell that it's less than negative nine.)
2. 22 + (-98) + 7 < -9
(this is more complicated, but you can still tell that the sum is less than negative nine.)
So, basicly all that you have to do is replace the missing value with a number that gives the eqquation a sum less than negative nine. Hope this helped!!! :)
3x + 5 = 2(2x + 4)
What is the solve for x?
The value of x in the given equation 3x + 5 = 2(2x + 4) is x = -3.
How to solve the value of x in equation?
To "solve for x" is to determine the value of x in an equation with x as the only variable or with other variables, such as determining x in terms of y. L.H.S = R.H.S should result from finding the value of x and substituting it in the equation.Apply arithmetic operations to both sides of the equation to bring the variable to one side and all other values to the other side in order to find the value of x. To determine the outcome, simplify the values.3x + 5 = 2(2x + 4)
3x = 4x + 8 - 5
3x - 4x = 3
-x = 3
x = -3
Hence, the value of x in the given equation 3x + 5 = 2(2x + 4) is x = -3.
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The sum of the ages of Farhan and his cousin is 38. Seven years ago, Farhan
was thrice as old as his cousin.Find Farhan's present age.
Answer:
25 and 13
Step-by-step explanation:
sum of ages of Farhan and his cousin = 38
7 years ago Farhan thrice of his cousin = 3:1
7 year ago the sum of their ages = 38-14 = 24( 7 years for each)
3:1 = 4 units = 24
1 unit =6
ages of Farhan and his cousin 7 years ago = 6*3= 18 and 6*1 = 6
so the present age of Farhan = 18+7 = 25 and his cousin 6+7 = 13
The rectangular floor of a classroom is 38 feet in length and 26 feet in width. A scale drawing of the floor has a length of 19 inches. What is the area, in square inches, of the floor in the scale drawing?
Answer:
length is 19 width is 15
Step-by-step explanation:
The area of the classroom floor in the scale drawing is 247 square inches.
What is Area of Rectangle?The area of Rectangle is length times of width.
We need to find the scale of the drawing, which is the ratio of the length in the drawing to the actual length:
19 inches / 38 feet = 0.5 inches/foot
Now we can use the scale to find the dimensions of the classroom floor in the scale drawing:
Length in scale drawing = Actual length × Scale
Width in scale drawing = Actual width × Scale
Length in scale drawing = 38 feet × 0.5 inches/foot = 19 inches
Width in scale drawing = 26 feet × 0.5 inches/foot = 13 inches
So the dimensions of the classroom floor in the scale drawing are 19 inches by 13 inches.
To find the area in square inches, we can multiply the length by the width:
Area in scale drawing = Length in scale drawing × Width in scale drawing
= 19 inches× 13 inches
= 247 square inches
Therefore, the area of the classroom floor in the scale drawing is 247 square inches.
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Help me with this- 10 points
Answer:
The model on the top right.
Answer:
your answer would be the top right one
Step-by-step explanation:
I don't really know how to explain how I got my answer in words sorry.
Hope this helps! Have a great day ahead. Tell me if im wrong :) Stay Safe <3
Find the value of the trigonometric ratio. Express your answer as a fraction in lowest terms.
Find the value of the trigonometric ratio. Express your answer as a fraction in lowest terms.
\frac{20}{29}
29
20
\frac{21}{29}
29
21
\frac{21}{20}
20
21
\frac{29}{21}
21
29
Answer:
21/29
Step-by-step explanation:
Sin = hypotenuse side / opposite side to the angle
then: Sin (C) = 21 / 29
Leo flips a fair coin and rolls a fair six-sided dice.
Draw a sample space diagram to show all the possible outcomes.
Work out the probability that he gets an outcome of heads and 4.
Give your answer as a fraction in its simplest form.
By answering the presented question, we may conclude that As a result, probability the chance of receiving heads and 4 is 1/12.
What is probability?Probability is a measure of how likely an event is to occur. It is represented by a number between 0 and 1, with 0 representing a rare event and 1 representing an inescapable event. Switching a fair coin and coin flips has a chance of 0.5 or 50% since there are two equally likely outcomes. (Heads or tails). Probabilistic theory is an area of mathematics that studies random events rather than their attributes. It is applied in many disciplines, including statistics, economics, science, and engineering.
Here is an example space diagram that depicts all of the possible outcomes when Leo flips a coin and rolls a dice:
Each row represents the outcome of rolling the dice, and each column indicates the outcome of flipping the coin. The table entries represent the combined outcome of rolling the dice and flipping the coin. For example, the occurrence of receiving heads on the coin flip and rolling a 1 on the dice is represented by the outcome in the top left corner (H1).
As a result, the chance of receiving heads and 4 is 1/12.
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The sum of three numbers is 301. The second number is 3 less than twelve times the first number. The third number is 4 more than seven times the first number. Find the three numbers.
Answer:
Smallest number = 15
Second number = 177
Third number = 109
Step-by-step explanation:
Givens
Let the first number = x
Let the second number = 12x - 3
Let the third number = 7x + 4
Equation
x + 12x - 3 + 7x +4 = 301 Combine like terms
Solution
20x + 1 = 301 Subtract 1 from both sides
20x = 301 - 1 Combine
20x = 300 Divide by 20
x = 300/20
x = 15
Prescribed: 2 liters 5% Dextrose to infuse in 16 hours. Supplied: Two one-liter bags of 5% Dextrose. Directions: Calculate the flow rate in mL/hr. (Round to the nearest milliliter
Answer:
The flow rate in mL/hr for infusing 2 liters of 5% dextrose over 16 hours is 125 mL/hr.
Step-by-step explanation:
We can use the following formula to calculate the flow rate:
Flow rate (mL/hr) = Volume to be infused (mL) / Time of infusion (hr)
First, we need to convert the total volume of 2 liters to mL:
2 liters = 2000 mL
Next, we can plug in the values:
Flow rate = 2000 mL / 16 hours
Flow rate = 125 mL/hr
Therefore, the flow rate in mL/hr for infusing 2 liters of 5% dextrose over 16 hours is 125 mL/hr.