Answer:
35.34
Step-by-step explanation:
The formula for arc length is 2rФπ/360
2(15)(135)=4050
4050/360·π=35.34
2 x 1/2 = 1What property is this?
The inverse property of multiplication states that if you multiply a number by its reciprocal, also called the multiplicative inverse, the product will be 1.
So the reciprocal of 2 is 1/2 because 2*1/2=1
If y varies directly as the square of x and y = -54 when x = 9, then y = -1 1/3 when x = 6
Therefore , the solution of the given problem of equation comes out to be k1 = - 0.67 and k2 = -0.1.
Describe equation.A mathematical equation is a formula that joins two statements and uses the equal symbol (=) to indicate equality. A scientific statement that verifies the equality of two formalisms is known as an equation in algebra. For instance, the pieces ptdc + 6 and 12 are separated by an equal sign in the solution obd + 6 = 12. The relationship between the two phrases on either flank of a letter is described by a mathematical formula. Often, there is only one variable, which also serves as the symbol. for instance, 4x – 4 = 0.
Here,
If y varies in this case simply also as square of x
k is the proportionality constant, and
y = kx² in mathematics.
Considering y = -54 and x = 9,
y = kx²
k = y/ x²
k = -54/ 9²
k = -54/81
k1 = - 0.67
Moreover, if y=-11/3 and x=6,
k = y/x²
k = -3.667/ (6)²
k = -3.667/36
k2 = -0.1
Therefore , the solution of the given problem of equation comes out to be k1 = - 0.67 and k2 = -0.1.
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Evaluate the expression 4x² for x = 3.
Answer:
36
Step-by-step explanation:
do x to the second power then multiply 4 to get your answer
Relate a vertical line test to understanding functions.
a. Each horizontal line drawn through the graph Each vertical line drawn through the graph will
will intersect a function in only one location intersect a relation in only one location
b. Each vertical line drawn through the graph willd. Each vertical line drawn through the graph will
intersect a function in many locations
intersect a function in only one location
Answer:
B.
Step-by-step explanation:
Relate a vertical line test to understanding functions.
B. Each vertical line drawn through the graph will
intersect a function in many locations
intersect a function in only one location
Find the vertex, focus, and directrix of the parabola. x2 = 2y vertex (x, y) = Incorrect: Your answer is incorrect. focus (x, y) = Incorrect: Your answer is incorrect. directrix Incorrect: Your answer is incorrect.
The vertex, focus, and directrix of the parabola x^2 = 2y are Vertex: (0, 0), Focus: (0, 1/2), Directrix: y = -1/2
The given equation is x^2 = 2y, which is a parabola with vertex at the origin.
The general form of a parabola is y^2 = 4ax, where a is the distance from the vertex to the focus and to the directrix.
Comparing the given equation x^2 = 2y with the general form, we get 4a = 2, which gives us a = 1/2.
Hence, the focus is at (0, a) = (0, 1/2), and the directrix is the horizontal line y = -a = -1/2.
Therefore, the vertex, focus, and directrix of the parabola x^2 = 2y are:
Vertex: (0, 0)
Focus: (0, 1/2)
Directrix: y = -1/2
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Aisha travels 35 miles to get to work. How many miles does she travel to work and back in a 5 day week?
Answer:
350 miles per week
Step-by-step explanation:
That'd be 70 miles each day for 5 days, or 350 miles per week.
At what point does the line given by the following equation cross the y-axis?
y = 6/9x+3
a. (0,3)
b. (3,0)
c. (0,-)
d. (-9/2,0)
Answer:
A
Step-by-step explanation:
In a slope-intercept equation, the format goes like this:
y = mx + bM = Slope
B = Y-intercept
In the equation, y = 6/9x + 3:
The slope is 6/9
The y-intercept is 3.
So what the question means by "cross the y-axis" is when the line on the graph is going through the y-intercept point.
Because the y-intercept is 3, the ordered pair would look like this:
(0, 3)
Note: The y-intercept is when the x-intercept has a value of 0 and the y-intercept is only on the y-axis, never the x-axis.
Therefore, the answer would be Option A. (0, 3)
a poll shows that of all voters approve of the mayor's work. on three separate occasions a pollster selects a voter at random. what is the probability that on exactly one of these three occasions the voter approves of the mayor's work?
The probability that on exactly one of these three occasions the voter approves of the mayor's work is given as follows:
0.189 = 18.9%.
What is the binomial distribution formula?The mass probability formula, giving the probability of x successes, is of:
\(P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}\)
\(C_{n,x} = \frac{n!}{x!(n-x)!}\)
The parameters are given by:
n is the number of trials of the experiment.p is the probability of a success on a single trial of the experiment.The values of these parameters in the context of this problem are given as follows:
n = 3, p = 0.7.
Then the probability of exactly one success is calculated as follows:
P(X = 1) = 3!/(1!2!) x 0.7 x (0.3)² = 0.189 = 18.9%.
Missing InformationThe proportion of voters that approve the mayor's work is of 70%.
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30 25 20 points per game 15 A 10 D 5 % 2 3 5 6 free throw attempts per game a.) Which point represents the data for Player E? D b.) What does the point (2.1.18.6) represent? Select ! c.) In that same tournament, Player O on another team scored 14.3 points per game with 4.8 free throw attempts per game. Which point on the graph would be closest to where the point for Player O would be? Select ]
QUESTION A
Player E has 3.1 free throw attempts and 10.4 points.
This is represented by the point labelled D in the image.
QUESTION B
The point (2.1, 18.6) can be compared to the table.
When we do so, we can see that player B has the same values for free throw attempts and points.
Thus, that point represents the data for player B.
QUESTION C
Player O scored 14.3 points and 4.8 free throw attempts. This can be shown in the
A new health drink has 120% of the recommended daily allowance (RDA) for a certain vitamin. The RDA for this vitamin is 20mg. How many milligrams of the vitamin are in the drink?
Determine whether each pair of expressions is equivalent. Explain your reasoning.
The answer is:
\(\large\textbf{They aren't equivalent.}}\)
In-depth explanation:
To determine the answer to this problem, we will use one of the exponent properties:
\(\sf{x^{-m}=\dfrac{1}{x^m}}\)
And
\(\sf{\dfrac{1}{x^{-m}}=x^m}\)
Now we apply this to the problem.
What is 4⁻³ equal to? Well according to the property, it's equal to:
\(\sf{4^{-3}=\dfrac{1}{4^3}}\)
And this question asks us if 4⁻³ is the same as 1/4⁻3.
Well according to the calculations performed above, they're not equivalent.
What is the solution to 0.4(12-3x)=0.3(12x-16)
Step 1: Simplify both sides of the equation.
0.4(12−3x)=0.3(12x−16)
(0.4)(12)+(0.4)(−3x)=(0.3)(12x)+(0.3)(−16)(Distribute)
4.8+−1.2x=3.6x+−4.8
−1.2x+4.8=3.6x−4.8
Step 2: Subtract 3.6x from both sides.
−1.2x+4.8−3.6x=3.6x−4.8−3.6x
−4.8x+4.8=−4.8
Step 3: Subtract 4.8 from both sides.
−4.8x+4.8−4.8=−4.8−4.8
−4.8x=−9.6
Step 4: Divide both sides by -4.8.
−4.8x /−4.8 = −9.6 /−4.8
x = 2
Divide.
(20x2-12x+8)+ (2x+8)
280
2x-8
280
O 10x-34+.
O 10x +34+
O 10x +46 +
2x-8
376
2x-8
376
2x+8
O 10x-46+.
The final expression is 20(5x - 1)2 + 2x + 8.
The given expression is (20x2-12x+8)+ (2x+8). We are required to simplify the given expression.To do that, we will first simplify the expressions inside the parentheses followed by the addition.(20x2-12x+8) can be written as 4 * 5x2-3x+2. This is because we can take 4 as the GCF (Greatest Common Factor) from the given expression. 4 is also a perfect square so we can write 4 * 5x2-3x+2 as 2 * 2 * 5x2-3x+2.
This expression can further be simplified using the (a + b)2 formula which is a2 + 2ab + b2. In this case, a is 5x and b is 1. Hence, we can write 2 * 2 * 5x2-3x+2 as 2 * 2 * (5x - 1)2. Now, the given expression becomes 2 * 2 * (5x - 1)2 + (2x + 8).We will simplify this expression further by distributing the factor 2 on the right-hand side of the addition. Therefore, the given expression becomes 2 * 2 * (5x - 1)2 + 2x + 2 * 4. This can be simplified to get the following expression:20(5x - 1)2 + 2x + 8We have now successfully simplified the given expression.
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. A science class starts an experiment with
3 plants that are each 2.5 cm tall. They
provide all of the needs of the plant and
track their growth. Plant A was 23.5 cm
tall after two weeks. What was the
average rate of change in inches per
day of Plant A?
Answer:
See belowStep-by-step explanation:
Plant A growth over 2 weeks:
23.5 cm - 2.5 cm = 21 cmAverage rate of change after 2 weeks or 14 days:
21/14 = 1.5 cm per dayIf you need it in inches, then convert as below:
1.5 cm = 1.5 * 1/2.54 in = 1.5/2.54 in = 0.59 in per day (rounded0A bridge, PR, across a river is 400 m long. Gabe is launching a canoe at point Q.
He will paddle in a diagonal line across the river to point P. He plans to return along a route beside the bridge from P to R, and then along the shore from R back to Q. How far will this be altogether?
Therefore, the total distance Gabe will paddle is 2x + 400 meters. The exact value of x depends on the width of the river, which is not provided in the given information.
To find the total distance Gabe will paddle, we need to consider the distance he will travel from Q to P, then from P to R, and finally from R back to Q.
First, let's consider the distance from Q to P. Since Gabe will paddle in a diagonal line across the river, this distance can be calculated using the Pythagorean theorem.
The length of the bridge (PR) is given as 400 meters, which is the hypotenuse of a right triangle. The width of the river can be considered as the perpendicular side, and the distance Gabe will paddle from Q to P is the other side. Let's call this distance x.
Using the Pythagorean theorem, we have:
x^2 + (width of the river)^2 = PR^2
Since the width of the river is not given, we'll represent it as w. Therefore:
x^2 + w^2 = 400^2
Next, let's consider the distance from P to R. Gabe will paddle along a route beside the bridge, which means he will travel the length of the bridge (PR) again. So, the distance from P to R is also 400 meters.
Finally, Gabe will paddle back from R to Q along the shore. Since he will follow the shoreline, the distance he will paddle is equal to the distance from Q to P, which is x.
To find the total distance, we add up the distances:
Total distance = QP + PR + RQ
= x + 400 + x
= 2x + 400
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Write an equation of a line that is parallel to the line y = 2x + 8
A) y = 3x + 8
B) y = 1/3x + 8
C) y = 2x + 7
D) 2y = 2x + 9
Answer:
A
Step-by-step explanation:
pls help, i need the answer by tonight!!
Answer:
Step-by-step explanation:
let distance=d
d²=4²+(2+4)²=16+36=52=4×13
d=2√13
Rocky Mountain Tire Center sells 10,000 go-cart tires per year. The ordering cost for each order is $35, and the holding cost is 40% of the purchase price of the tires per year. The purchase price is $25 per tire if fewer than 200 tires are ordered,$17 per tire if 200 or more, but fewer than 8,000, tires are ordered, and $13 per tire if 8,000 or more tires are ordered.
a) How many tires should Rocky Mountain order each time it places an order?
b) What is the total cost of this policy?
a) Rocky Mountain should order 200 tires each time it places an order.
b) The total cost of this policy is $17,160.
a) To determine how many tires Rocky Mountain should order each time, we need to consider the different price levels and find the point where it is most cost-effective to order. Let's analyze the three price levels:
If fewer than 200 tires are ordered: The purchase price is $25 per tire.
If 200 or more, but fewer than 8,000 tires are ordered: The purchase price is $17 per tire.
If 8,000 or more tires are ordered: The purchase price is $13 per tire.
Since the ordering cost is $35 per order, it is most cost-effective to order the maximum quantity that falls within the second price level, which is 200 tires.
b) To calculate the total cost of this policy, we need to consider the ordering cost and the holding cost. The holding cost is 40% of the purchase price per tire per year. Let's calculate the total cost:
Total holding cost = (Purchase price per tire * Quantity ordered * Holding cost rate) / 2 = (($17 * 10,000 * 0.4) / 2) + (($13 * 2,000 * 0.4) / 2) = $34,000 + $5,200 = $39,200
Total cost = Total ordering cost + Total holding cost = (Ordering cost per order * Number of orders) + Total holding cost = ($35 * (10,000 / 200)) + $39,200 = $1,750 + $39,200 = $40,950
Therefore, the total cost of this policy is $40,950.
Rocky Mountain Tire Center should order 200 tires each time it places an order, resulting in a total cost of $40,950 for this policy. This ordering quantity and cost analysis allows Rocky Mountain to make efficient and cost-effective decisions in managing their inventory.
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in cluster analysis, a method can be used to reduce bias due to the difference in units of measurement. one such method is called
In cluster analysis, a method can be used to reduce bias due to the difference in units of measurement. One such method is called standardization.
Cluster analysis is a data mining approach that is widely utilized in data processing, image analysis, and other data-based analytics applications. It groups items that have comparable characteristics into clusters by separating them from other objects that do not share the same features.
Standardization is the process of converting variables with various scales to a common scale so that they can be compared fairly.
Standardization involves transforming all of the variables into comparable units of measurement by converting them into z-scores. This allows for the comparison of values without being affected by the different units of measurement.
The method that can be used to reduce bias due to the difference in units of measurement in cluster analysis is standardization, which converts variables with various scales to a common scale so that they can be compared fairly. This ensures that each variable contributes equally to the distance between the clusters.
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(1 point) find the angle θ between the vectors a=9i−j−5k and b=2i j−8k.
The required answer is the angle between vectors a and b is 44.8 degrees.
To find the angle θ between two vectors a and b, we use the dot product formula:
a · b = |a| |b| cos θ
where |a| and |b| are the magnitudes of vectors a and b, respectively.
First, let's calculate the dot product of a and b:
a · b = (9)(2) + (-1)(0) + (-5)(-8) = 18 + 40 = 58
Variable were explicit numbers solve a range of problems in a single computation. The quadratic formula solves any quadratic equation by substituting the numeric values of the coefficients of that equation for the variables that represent them in the quadratic formula. A variable is either a symbol representing an unspecified term of the theory , or a basic object of the theory that is manipulated ,without referring to its possible intuitive interpretation.
Next, let's calculate the magnitudes of vectors a and b:
|a| = sqrt(9^2 + (-1)^2 + (-5)^2) = sqrt(107)
|b| = sqrt(2^2 + 1^2 + (-8)^2) = sqrt(69)
the angle θ by taking the inverse cosine of the cosine value: θ = (57 / (√107 * √69)
Now we can substitute these values into the dot product formula to solve for θ:
58 = sqrt(107) sqrt(69) cos θ
cos θ = 58 / (sqrt(107) sqrt(69))
θ = cos^-1(58 / (sqrt(107) sqrt(69)))
Now you have the angle θ between the two vectors a and b.
Using a calculator, we find that θ is approximately 44.8 degrees.
Therefore, the angle between vectors a and b is 44.8 degrees.
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y plus 4 plus 3(y plus 2)
Answer:
5y+11
Step-by-step explanation:
y+3+4(y+2)
Use the distributive property to multiply 4 by y+2.
y+3+4y+8
Combine y and 4y to get 5y.
5y+3+8
Add 3 and 8 to get 11.
A box contains red, purple and green beads in the ratio 4:6:7 There are 1428 more green beads than red beads.
How many green beads are in the box?
Answer:
3332 green beads
Step-by-step explanation:
There are 1428 more green beads than red beads.
There are 3,332 greed beads in the box
Given :
A box contains red, purple and green beads in the ratio 4:6:7
From the given ratio,
number of red beads = 4x
number of purple beads= 6x
number of green beads= 7x
There are 1428 more green beads than red beads.
green beads =1428 + red beads
\(7x=1428+4x\\3x=1428\\x=476\)
we know that number of green beads= 7x
number of green beads= \(7(476)=3332\)
There are 3,332 greed beads in the box
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answer asap plllllsssssss
Answer:
n + 32 = 59.13
Step-by-step explanation:
n + 32 = 59.13
Answer:
32+n=59.13?
Step-by-step explanation:
I hope this helps im bad at math ;-;
Mike used of a cup of vinegar in his salad dressing recipe. He made 3 salad dressing recipes. Between which two whole numbers does the number of cups of vinegar that Mike used lie?
The number of cups of vinegar that Mike used lies between the whole numbers 2 and 4
If Mike used one cup of vinegar for each salad dressing recipe, then he used a total of 3 cups of vinegar (1 cup x 3 recipes = 3 cups).
However, the question states that he used "a cup of vinegar" in each recipe, which could mean that he used slightly less than one cup, exactly one cup, or slightly more than one cup.
Assuming that Mike used at least 3/4 cup of vinegar in each recipe (which is still close to "a cup"), then he used a minimum of 2 and 1/4 cups of vinegar in total (3/4 cup x 3 recipes = 2 and 1/4 cups).
Assuming that Mike used at most 1 and 1/4 cups of vinegar in each recipe (which is still close to "a cup"), then he used a maximum of 3 and 3/4 cups of vinegar in total (1 and 1/4 cups x 3 recipes = 3 and 3/4 cups).
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How many whole numbers are less than n+1?
Thx
Answer:
\(n\)
Step-by-step explanation:
The expression \(n+1\) represents infinite numbers, because \(n\) can be all positive numbers, all negative numbers, or can be an element of the whole number field.
So, generally speaking, the numbers less than \(n+1\) are \(n\), because \(n<n+1\).
Therefore, an expression less than the given one is \(n\)
Answer:
n+1
Step-by-step explanation:
If (3x+5) is one factor of (30x^3+83x^2+37x-30), what are the other two factors?
The given polynomial is
30x^3 + 83x^2 + 37x - 30
We want to divide it by 3x + 5. We would apply the method of long division. The steps are shown below
The result of dividing 30x^3 + 83x^2 + 37x - 30 by 3x + 5 = 10x^2 + 11x - 6
This is a quadratic polynomial. We would simplify this quadratic polynomial by applying the method of factorisation. The first step is to multiply 10x^2 with - 6. It becomes - 60x^2. We would find two terms such that their sum or difference is 11x and their product is - 60x^2. The terms are 15x and - 4x. By replacing 11x with 15x - 4x, we have
10x^2 + 15x - 4x - 6
We would factorise by grouping. We have
5x(2x + 3) - 2(2x + 3)
Since 2x + 3 is common, it becomes
(2x + 3)(5x - 2)
The other two factors are (2x + 3)(5x - 2)
write the rational number as a decimal, and state whether the decimal is repeating or terminating. question content area bottom part 1 choose the equivalent decimal. a. 0. b. 0. c.0. 16 overbar d. 0.
a. The decimal is terminating and the rational number is 0.
b. The decimal is terminating and the rational number is 0.
c. The decimal is repeating and the rational number is 0.161616...
d. The decimal is terminating and the rational number is 0.
To write a rational number as a decimal, you need to divide the numerator by the denominator. Let's go through each option to determine which decimal is repeating or terminating.
a. 0: This decimal is terminating because there are no numbers after the decimal point. The rational number is 0.
b. 0: This decimal is also terminating because there are no numbers after the decimal point. The rational number is 0.
c. 0.16 overbar: This decimal has a line over the 16, indicating that it is repeating. The rational number is 0.161616...
d. 0: This decimal is terminating because there are no numbers after the decimal point. The rational number is 0.
So, to summarize:
a. The decimal is terminating and the rational number is 0.
b. The decimal is terminating and the rational number is 0.
c. The decimal is repeating and the rational number is 0.161616...
d. The decimal is terminating and the rational number is 0.
.
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Please help me with this math problem!! Will give brainliest!! :D 15 POINTS!!!
Step-by-step explanation:
For the first question, let's add the %'s
37% + 13% + 25% + 25% = 100%
So it looks like you have a 100% chance to win a prize.
-------------
For the second question
It cost $2 to play
Soda - $1
Candy Bar - $1
Toy - $3
Mega Win - $40
It looks like 2 out of 4 (50%) cost more than the price to play.
So we add the % of the Toy and Mega since those are the ones more than $2
25% + 13% = 38% chance to win a prize more than the cost to play
which of the following is the correct meaning of the mean? a. the measure of the degree to which the elements of the data set are spread around the median value. b. the value of the data set that measures the average value of all the elements of the data set. c. the measure of the element of the data set that occurs with the highest frequency. d. the value that measures the spread of the data set around the standard deviation.
Option B. The value of the data set that measures the average value of all the elements of the data set. The mean is the average of all the values in the data set.
What is the correct meaning of the mean?The mean is a measure of central tendency that is used to calculate the average value of a data set. In order to calculate the mean, all of the values in the data set are added together and then divided by the number of values in the data set. The mean is a good measure of central tendency to use when the data set is symmetrical.
This is because the mean is calculated by adding all of the values in the data set together and then dividing by the number of values in the data set. This gives each value in the data set an equal weight.
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What is the solution to the equation 4x-6= 10x-3?
X=-2
O X=2
O X=
O X= 2
Answer:
the first one x = -2
Step-by-step explanation:
Let's solve your equation step-by-step.
4x−6=10x−3
Step 1: Subtract 10x from both sides.
4x−6−10x=10x−3−10x
−6x−6=−3
Step 2: Add 6 to both sides.
−6x−6+6=−3+6
−6x=3
Step 3: Divide both sides by -6.
Answer:
x = -1/2
Step-by-step explanation:
4x - 6 = 10x - 3
+6 +6
4x = 10x + 3
-10x -10x
-6x = 3
3 / -6 = -1/2