Answer:
3/10
Step-by-step explanation:
4.5 divided by 15 = 0.3 or 3/10 in faction form.
What procedure can be used to solve the equation StartFraction x Over 19.3 EndFraction = 38.6, and what is the solution?
Answer: it’s number D I think let me know if I’m wrong
Step-by-step explanation:
Answer:
the answer is d.Multiply both sides by 19.3; the solution is 744.98.
Step-by-step explanation:
got it right on edge.
is 3.45445554 rational or irrational?
Answer:
3.45445554 is irrational.
Hope this helps!
Please can you mark as Brainliest!
Step-by-step explanation:
Answer:
\(3.45445554\)
Rational number ✔️
rational number is the number that can form a fraction
A soda company conducted a taste test for three different kinds of soda that it makes.
It surveyed 200 people in each age group about their favorite flavor and the results are shown in
the table below.
Age
Soda A Soda B Soda C
Under 20
30
44
126
20 to 39
67
75
58
40 to 59
88
78
34
60 and over
141
49
10
10.
What is the probability that a participant chose Soda C or was under 20 years old?
Rounded to the nearest tenth
35.2%
37.8%
52.5%
50%
Answer:
Step-by-step explanation:
35percent was yonger
Make sure to maximize the question window to get the best view of this problem.
Give the formulas for the piecewise function graphed below.
Make sure the top row is for the left piece, the second row is
for the middle plece, and the bottom row is for the right piece.
f(x) =
The formulas for the piecewise function graphed below are:
f(x) = x + 3 for -2 ≤ x < 0, 3 for 0 ≤ x < 2, -2x + 7 for 2 ≤ x ≤ 4.
The piecewise function graph provided consists of three distinct pieces.
To give the formulas for each piece, we can break it down as follows:
For the left piece:
The left piece of the graph starts at x = -2 and ends at x = 0. It appears to be a linear function with a positive slope. Let's call this function f₁(x).
The formula for the left piece, f₁(x), can be written as:
f₁(x) = mx + b
To find the slope (m) and y-intercept (b), we can use two points on the graph.
From the graph, we can see that when x = -2, y = 1. And when x = 0, y = 3.
Using the formula for slope (m):
m = (y₂ - y₁) / (x₂ - x₁)
m = (3 - 1) / (0 - (-2))
m = 2 / 2
m = 1
Substituting the values of m and one of the points (x, y) into the equation, we can solve for the y-intercept (b):
1 = 1(-2) + b
1 = -2 + b
b = 1 + 2
b = 3
Therefore, the formula for the left piece is:
f₁(x) = x + 3
For the middle piece:
The middle piece of the graph starts at x = 0 and ends at x = 2. It appears to be a horizontal line.
Let's call this function f₂(x).
The formula for the middle piece, f₂(x), can be written as:
f₂(x) = c
To find the value of c, we can observe that the y-values of this piece are all equal to 3.
Therefore, the formula for the middle piece is simply:
f₂(x) = 3
When x = 2, y = 3. And when x = 4, y = -1.
Using the formula for slope (m):
m = (y₂ - y₁) / (x₂ - x₁)
m = (-1 - 3) / (4 - 2)
m = -4 / 2
m = -2
Substituting the values of m and one of the points (x, y) into the equation, we can solve for the y-intercept (b):
3 = -2(2) + b
3 = -4 + b
b = 3 + 4
b = 7
Therefore, the formula for the right piece is:
f₃(x) = -2x + 7
To summarize, the formulas for the piecewise function graphed below are:
f(x) =
x + 3 for -2 ≤ x < 0
3 for 0 ≤ x < 2
-2x + 7 for 2 ≤ x ≤ 4
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solve |3x| - 3= 3 - 6x for x
Answer:
x = 2 (doesn’t work in the equation)
3(2) -3 = 3 - 6(2)
X = 2/3 (works in the equation
3 (2/3) - 3 = 3 - 6(2/3)
2-3 = 3 - 4
- 1 = -1
Step-by-step explanation:
|3x| - 3 = 3 - 6x
|3x| = 3 + 3 - 6x
|3x| = 6 - 6x
|3x| = -6 + 6x
3x = - 6 + 6x or 3x = 6 - 6x
6 = 6x - 3x
6 = 3x
x = 2
3x = 6 - 6x
3x + 6x = 6
9x = 6
x = 6/9
x = 2/3
Please awnser asap I am
Stuck
Answer:
it is too blury to read
Step-by-step explanation:
A survey of 450 randomly chosen US adults found that 35% of the 200 men and 40% of the 250 women attended a college football game during the past month. Do these data provide statistical evidence at the α = 0.01 level that men are more likely than women to attend football games? Be sure to state the parameter, check conditions, perform calculations, and make conclusion(s). (10 points)
Answer:100,000
Step-by-step explanation:
GIVING 75 POINTS
Solve the equation from Part C so that y is by itself on one side of the equation. How are this equation and the equation of the line related? What does this relationship mean about any triangle created using this line?
Part C ---- For similar triangles, the side lengths are proportional. So, you can write a proportion relating the two pairs of vertical and horizontal side lengths. For the line y = 2x, a triangle can be drawn 2 units up and 1 unit right from the origin.
Write a proportion relating the side lengths of the triangle to any other triangle that has the line as a hypotenuse, a horizontal length of x units, and a vertical length of y units.
Answer:
This is my answer,
Step-by-step explanation:
The equation is y=2x, and the horizontal line will always be half of the vertical line (1:2). We can prove this by plugging in y or x. For example, if y is 12, 12=2x. X would equal six.
URGENT DUE IN FEW MINS6th grade math Calculate to TOTAL Surface Area.
Do NOT count the surface under the pyramid.
The surface area of the solid is 281 ft².
Given that, a solid figure made of a rectangular prism and a square pyramid,
We need to find its surface area,
To find the same, we will find the lateral surface area of square pyramid, and total surface area of rectangular prism,
So,
Surface area = 2×side×slant height + 2(length·width+width·height+height·length)-base area of the square pyramid,
= 2×5×5 + 2(4·12+12·5+4·5)-5²
= 50+256-25
= 281 ft²
Hence the surface area of the solid is 281 ft².
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please give me the answer.
Express as a trinomial.
(2x+10)(2x+3)
Answer:
\(4 {x}^{2} + 26x + 30\)
Step-by-step explanation:
\((2x + 10)(2x + 3) \\ \\ = 2x(2x + 3) + 10(2x + 3) \\ \\ = 4 {x}^{2} + 6x + 20x + 30 \\ \\ = 4 {x}^{2} + 26x + 30\)
Which of the following verbal sentences represents the algebraic sentence below?
2x – 5 = -15
Decide whether the relation is a function *
1) {(-5, -2), (-1, 1), (3, -6), (8, 1)
Answer:
Step-by-step explanation:
Identify the input values. Identify the output values. If each input value leads to only one output value, classify the relationship as a function. If any input value leads to two or more outputs, do not classify the relationship as a function.
In your own words, please describe the difference between the regression equation ^y= b0 +b1xt and the regression equation Y=B0+B1x
In summary, the difference between these two regression equations is mainly in the notation used to represent the regression coefficients, with lowercase letters used in simple linear regression models and uppercase letters used in multiple linear regression models.
What is equation?In mathematics, an equation is a statement that asserts that two mathematical expressions are equal to each other. It usually contains one or more variables, which are placeholders for values that can vary. Equations are used to describe mathematical relationships and to solve problems. They can take many forms, such as linear equations, quadratic equations, polynomial equations, exponential equations, and so on. The specific form of an equation depends on the type of problem being solved and the mathematical relationships involved.
Here,
Both the regression equations ^y = b0 + b1x and Y = B0 + B1x are used to model the relationship between a dependent variable (y or Y) and an independent variable (x). However, the key difference between these two equations lies in the notation used to represent the regression coefficients.
In the first equation ^y = b0 + b1x, the regression coefficients are represented with lowercase letters (b0 and b1). This notation is typically used in simple linear regression models where there is only one independent variable. The hat symbol (^) over the y indicates that this is an estimated value of y based on the model.
In the second equation Y = B0 + B1x, the regression coefficients are represented with uppercase letters (B0 and B1). This notation is typically used in multiple linear regression models where there are two or more independent variables. The capitalization of the letters helps to distinguish them from the coefficients in the simple linear regression model.
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the sum of two numbers is 20 one number is four less than the other. find the number
Answer:
is it 4 and 12 ?
Step-by-step explanation:
please let me know if it is correct! but i am 96% sure for me answer!
Among all pairs of numbers whose sum is 24, find a pair whose product is as large as possible. Show the work(the steps)! Write an equation of the corresponding quadratic function. How parabola opens? What is the maximum product? Does this function has a maximum value or the minimum value? Explain. Graph the function and upload the image.
The pair of numbers that yields the maximum product when their sum is 24 is (12, 12), and the maximum product is 144. The corresponding quadratic function is P(x) = -x^2 + 24x, and the parabola opens downwards.
To find a pair of numbers whose sum is 24 and whose product is as large as possible, we can use the concept of maximizing a quadratic function.
Let's denote the two numbers as x and y. We know that x + y = 24. We want to maximize the product xy.
To solve this problem, we can rewrite the equation x + y = 24 as y = 24 - x. Now we can express the product xy in terms of a single variable, x:
P(x) = x(24 - x)
This equation represents a quadratic function. To find the maximum value of the product, we need to determine the vertex of the parabola.
The quadratic function can be rewritten as P(x) = -x^2 + 24x. We recognize that the coefficient of x^2 is negative, which means the parabola opens downwards.
To find the vertex of the parabola, we can use the formula x = -b / (2a), where a = -1 and b = 24. Plugging in these values, we get x = -24 / (2 * -1) = 12.
Substituting the value of x into the equation y = 24 - x, we find y = 24 - 12 = 12.
So the pair of numbers that yields the maximum product is (12, 12). The maximum product is obtained by evaluating the quadratic function at the vertex: P(12) = 12(24 - 12) = 12(12) = 144.
Therefore, the maximum product is 144. This quadratic function has a maximum value because the parabola opens downwards.
To graph the function, you can plot several points and connect them to form a parabolic shape. Here is an uploaded image of the graph of the quadratic function: [Image: Parabola Graph]
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You are given that z > 2. Write an inequality for each expression.
a) 2z+ 9
b) 3(z - 4)
c) 4+2z
d) 5(3z-2)
a) The inequality for the expression 2z + 9 is 2z + 9 > 13.
b) The inequality for the expression 3(z - 4) is 3z - 12 > -6.
c) The inequality for the expression 4 + 2z is 4 + 2z > 8.
d) The inequality for the expression 5(3z - 2) is 15z - 10 > 20.
a) To write an inequality for the expression 2z + 9, we can multiply the given inequality z > 2 by 2 and then add 9 to both sides of the inequality:
2z > 2 * 2
2z > 4
Adding 9 to both sides:
2z + 9 > 4 + 9
2z + 9 > 13
Therefore, the inequality for the expression 2z + 9 is 2z + 9 > 13.
b) For the expression 3(z - 4), we can distribute the 3 inside the parentheses:
3z - 3 * 4
3z - 12
Since we are given that z > 2, we can substitute z > 2 into the expression:
3z - 12 > 3 * 2 - 12
3z - 12 > 6 - 12
3z - 12 > -6
Therefore, the inequality for the expression 3(z - 4) is 3z - 12 > -6.
c) The expression 4 + 2z does not change with the given inequality z > 2. We can simply rewrite the expression:
4 + 2z > 4 + 2 * 2
4 + 2z > 4 + 4
4 + 2z > 8
Therefore, the inequality for the expression 4 + 2z is 4 + 2z > 8.
d) Similar to the previous expressions, we can distribute the 5 in the expression 5(3z - 2):
5 * 3z - 5 * 2
15z - 10
Considering the given inequality z > 2, we can substitute z > 2 into the expression:
15z - 10 > 15 * 2 - 10
15z - 10 > 30 - 10
15z - 10 > 20
Therefore, the inequality for the expression 5(3z - 2) is 15z - 10 > 20.
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In order to accumulate enough money for a down payment on a car, Karl deposits $100 per month into an account paying 1.75% compounded monthly. If payments are made at the end of each period, how much In order to accumulate enough money for a down payment on a car, Karl deposits $100 per month into an account paying 1.75% compounded monthly. If payments are made at the end of each period, how much money will be in the account in 18 months? How much interest will Karl have earned? Total amount: Interest earned:
1. If payments are made at the end of each period, the amount of money that will be in the account in 18 months (future value) is $2,094.46.
2. The total interest that Karl earned will be $294.46.
3. Total amount: $2,094.46
Interest earned = $294.46
What is the future value?The future value is the future cash deposits compounded at an interest rate for a period.
The future value can be computed using the future value table or future value formula. It can also be computed using an online finance calculator.
N (# of periods) = 18 months
I/Y (Interest per year) = 21% (or 1.75% monthly)
PV (Present Value) = $0
PMT (Periodic Payment) = $100
Results:
Future Value (FV) = $2,094.46
Sum of all periodic payments = $1,800 ($100 x 18)
Total Interest = $294.46
Thus, the total future amount in the account will be $2,094.46 with an interest of $294.46.
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choose the opposite integer for: 100 feet below the surface
Answer:I think it’s 100
Step-by-step explanation:
It says that it’s 10p feet below the surface so that’s -100. It asks for the opposite of that so it’s 100
Answer:
-100
Step-by-step explanation:
Because it's opposite
Need help!
Which answer is correct?
Answer:
the answer is a
Step-by-step explanation:
Divide 8 1/8 by 7 1/12 simplify the answer and write as a mixed number
The division of 8 1/8 by 7 1/12 is 91/136.
What is division?Division simply has to do with reduction of a number into different parts. On the other hand, a mixed number is the number that's made up of whole number and fraction.
Dividing 8 1/8 by 7 1/12 will go thus:
8 1/8 ÷ 7 1/12
Change to improper fraction
65/8 ÷ 85/7
= 65/8 × 7/85
= 91/136
The division will give a value of 91/136.
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What is the Additive inverse of -7?
Answer:
7
Step-by-step explanation:
Two numbers are additive inverses if they add to give a sum of zero. 3 and -3 are additive inverses since 3 + (-3) = 0. -3 is the additive inverse of 3. 3 is the additive inverse of -3.
The additive inverse of a number is a number that is the same distance from 0 on the number line, but in the opposite direction. It can also be thought of as the number that you need to add to a number in order for the result to be 0.
Examples
In the number line below, -3 and 3 are additive inverses. If we add the other value to either of the two values, the result will be 0.
-3 + 3 = 0
3 - 3 = 0
The same is true of the other corresponding values on the number line; 5 and -5, 4 and -4, 2 and -2, 1 and -1, and even 0 and 0, are all also additive inverses.
Answer:
7
Step-by-step explanation:
The additive inverse of a number is is the number that, when added to it, yields zero.
Jennifer is having a birthday party and spends a total of $136 on food. She spent $25 on a cake and $9.25 for each pizza. Write and solve an equation to determine how many pizzas, p, she bought.
Answer:
7
Step-by-step explanation:
Answer:
14
Step-by-step explanation:
combine like terms
8x+3-5x+9
a. 3x+12
b.-13x-12
c.13x+12
d.3x-6
Answer:
A. 3x+12
Step-by-step explanation:
8x+3-5x+9
8x-5x=3x
3+9=12
then put them together
3x+12
answer= A
Find the size of angle XYZ give your answer to 1 decimal place
Step-by-step explanation:
angle x=90°
xz=opposite
xy=adjacent
zy=hypotenuse
we neee to find acute angle
y°=(7/12)=0,58(3)
Applying the cosine ratio, CAH, the size of angle XYZ, to 1 decimal place is calculated as: 54.3°.
What is the Cosine Ratio?To solve a right triangle by relating the adjacent side to the hypotenuse, the cosine ratio is applied, which is: cos ∅ = adjacent/hypotenuse.
Given the parameters:
∅ = angle XYZHypotenuse = 12 cmAdjacent side = 7 cmApply the cosine ratio:
Cos (XYZ) = 7/12
Angle XYZ = cos^(-1)(7/12)
Angle XYZ = 54.3°
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quadratic regression for (1,-8) (2,-4) (3,6)
The quadratic regressiοn equatiοn fοr the given data pοints is y = 5x² - 20x + 7
What is quadratic equatiοn?
A secοnd-degree equatiοn οf the fοrm ax² + bx + c = 0 is knοwn as a quadratic equatiοn in mathematics. Here, x is the variable, c is the cοnstant term, and a and b are the cοefficients.
Tο find the quadratic regressiοn equatiοn fοr the given data pοints, we need tο fit a quadratic equatiοn οf the fοrm y = ax² + bx + c tο the data.
We can start by using the three given pοints tο set up a system οf three equatiοns:
\((1,-8): a(1)^2 + b(1) + c = -8\\\\(2,-4): a(2)^2 + b(2) + c = -4\\\\(3,6): a(3)^2 + b(3) + c = 6\)
SimpIifying each equatiοn, we get:
a + b + c = -8 (equatiοn 1)
4a + 2b + c = -4 (equatiοn 2)
9a + 3b + c = 6 (equatiοn 3)
AIternativeIy, we can use technοIοgy such as a caIcuIatοr οr spreadsheet tο sοIve the system.
SοIving the system using technοIοgy, we get:
a = 5
b = -20
c = 7
Therefοre, the quadratic regressiοn equatiοn fοr the given data pοints is:
y = 5x² - 20x + 7
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What is \(\sqrt{x-3} -\sqrt{x} =3\)
Answer:No solution
Step-by-step explanation:
The solution of the equation is 4. Once you plug in 4, you will find that it does not fit
1-2 does not equal to 3
bridge is raised so that it forms a 15° angle with the ground. It is then raised some more so that it forms a 43° angle with the ground. How many degrees was the draw bridge raised from its first position to its second position?
Answer: If you minus it the answer is -0.488692191 rad
I think
Step-by-step explanation:
How do you find the second of an angle?
The whole part of the measure of an angle in decimal degrees is the whole number of degrees. Multiplying the decimal part by 60 gives the number of minutes. If this number of minutes has a decimal part, then multiplying this decimal part by 60 gives the number of seconds.
These are my opinion
A car purchased for $20,000 depreciates annually at a rate of 8%. What will be the approximate value of the car in the 10th year?
Answer:
$4000
Step-by-step explanation:
20000x0.08=1600
1600x10=16000
20000-16000=4000
Answer:
$8687.76
Step-by-step explanation:
100-8=92
20,000*0.92=18400 (This is after one year)
20,000*0.92^10= 8687.7690 (After 10 years)
PLEASE HELP I WILL GIVE 60 PTS ANDDD I WILL GIVE BRAINLISET!!
The second x - intercept on the graph of a car that has been travelling for 8 hours, represents the end of the car's journey.
How to show a car's journey on a graph ?To show a car's journey on a graph with two x-intercepts, determine the scale for your x-axis and y-axis based on the range of values for your car's journey.
The x-intercepts represent the points where the car starts and ends its journey. These points should be plotted on the x-axis at the appropriate values based on your scale. Once you have plotted the x-intercepts and any intermediate points, connect them with a line to show the car's journey.
In conclusion, the second x - intercept shows the end of the car's journey.
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