If the 1/12 scale model of the rocket stood 48 inches high. The height of the actual rocket is 576 inches.
What is a ratio box?A ratio box can be defined as a tool that can be used to set up and solve proportion problems.
In order to use a ratio box to solve this problem, we can set up the following proportion:
Scale model height / Actual rocket height = 1/12
48 inches / actual rocket height = 1/12
To solve for the actual rocket height, we can cross-multiply and divide:
48 inches××12 = actual rocket height
Actual rocket height = 576 inches
Therefore the height of the actual rocket is 576 inches.
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stephanie is drawing the layout of a parking lot on a coordinate grid and needs to verify that two sides meet in a right angle. in her sketch, one side of the parking lot has endpoints a(18,24) and b(50,0) . the second side of the parking lot has endpoints b(50,0) and c(0,0) . how can stephanie prove that the two sides of the parking lot meet in a right angle? select all that apply.
If Stephanie need prove that two sides of the parking lot meet in a right angle , then the options that apply are :
(a) Find the slopes of AC and CB. If the product of the slopes is -1, then the sides meet in a right angle. and
(e) Find AB, BC, and AC. If AB²+ BC² = AC² then the sides meet in a right angle.
The endpoints of the triangle parking are : A(0,0) , B(50,0) and C(18, 24) .
Option (a) : The slope of AC = (24-0)/(18-0) = 24/18 = 4/3 .
slope of CB = (0-24)/(50-18) = -24/32 = -3/4 .
the product of slope of AC and CB = -1 , hence the triangle is Right Triangle .
Option (e) : The Pythagorean Theorem states that in a right triangle, the sum of the squares of the lengths of the two shorter sides is equal to the square of the length of the longest side, the hypotenuse.
In this case, AB and BC would represent the two shorter sides and AC would represent the longest side. If AB² + BC² = AC², then the three sides form a right triangle and the two sides meet in a right angle.
Stephanie is drawing the layout of a parking lot on a coordinate grid and needs to verify that two sides meet in a right angle. In her sketch, one side of the parking lot has endpoints A(0,0) and B(50,0). The second side of the parking lot has endpoints B(50,0) and C(18, 24). How can Stephanie prove that the two sides of the parking lot meet in a right angle? Select all that apply.
(a) Find the slopes of AC and CB. If the product of the slopes is -1, then the sides meet in a right angle.
(b) Find the slopes of AB and AC. If the product of the slopes is -1, then the sides meet in a right angle.
(c) Find the slopes of CB and AB. If the slope of AB is the opposite of the slope of AC, then the sides meet in a right angle.
(d) Find AB, BC, and AC. If AB + BC = AC, then the sides meet in a right angle.
(e) Find AB, BC, and AC. If AB² + BC² = AC² then the sides meet in a right angle.
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please solve step by step
The expression x² + 6x + 9 / 4 ÷ 3x + 9 / 8 can be simplified as 2(x + 3) / x .
How to solve an expression?To simplify an expression means to write an equivalent expression which contains no similar terms. In other words, we have to reduce the expression to the simplest form.
Therefore,
x² + 6x + 9 / 4 ÷ 3x + 9 / 8
Let's convert the division sign to multiplication.
Therefore,
x² + 6x + 9 / 4 × 8 / 3x + 9
Let's factorise the numerators and the denominators expression
x² + 6x + 9 = (x +3)² = (x + 3)(x + 3)
3x + 9 = 3(x + 3)
Therefore,
(x + 3)(x + 3) / 4 × 8 / x(x + 3)
Hence,
(x + 3)(x + 3) / 4 × 8 / x(x + 3) = 2(x + 3) / x
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jason wants to know if student grade point average (gpa) is impacted by being involved in a romantic relationship. in jason's study, gpa is the: independent variable dependent variable control variable.
Jason wants to know if student grade point average (GPA) is impacted by being involved in a romantic relationship. In Jason's study, GPA is the dependent variable.
The variable that is changed during a scientific experiment is known as an independent variable. In a laboratory experiment, an independent variable is one that can be changed or manipulated. It will stand in for the reason or cause behind an outcome.
The variable being evaluated or analyzed during a laboratory experiment is known as the dependent variable. It is obvious that the dependent variable relies on the independent variable. While a result, we can now see and note changes in the dependent variable as the experimenter modifies the independent variable.
A controlled variable is one that is maintained constant throughout a scientific experiment. As a result, we also understand the controlled variable to be a constant variable or occasionally just a "control."
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The complete question is:
Jason wants to know if student grade point average (GPA) is impacted by being involved in a romantic relationship. In Jason's study, GPA is the:
a. Independent Variable
b. Dependent Variable
c. Control Variable
d. None of the Above
The formula used to convert degrees Celsius to degrees Fahrenheit is F = 9/5 C +32. Convert 68°F to degrees Celsius. Solve the formula for C, and then use it to convert the temperature. Which is the correct formula and conversion?
(i attached an image)
Answer:
D
Step by step explanation:
[tex]F = \frac{9}{5}C + 32[/tex]
The main objective is to isolate C and to make C the subject of the equation:
[tex]= F - 32= \frac{9}{5} C[/tex]
[tex]= C = \frac{5}{9} (F - 32)[/tex]
Now substitute the given value of F:
[tex]C = \frac{5}{9} (68-32)[/tex]
[tex]=C = \frac{5}{9} (36)[/tex]
[tex]= C = 20^{o} C[/tex]
Answer:
D. C = 5/9 ( F - 32 ) ; conversion: 68° F = 20° C
6 ln(8x+1)-14=28 solve for the exact value of x
ln(8x+1) = (28+14)/6 = 7
8x+1 = e^7
8x = e^7 - 1
x = (e^7 - 1)/8
Answer:x=e^7-1/8
Step-by-step explanation:
6 ln(8x+1)-14=28
+14 +14
6 ln(8x+1) =42
6 ln(8x+1)/6 42/6
log e (x) = a-->e^a=x
8x+1=e^7
8x/8 =e^7-1/8
x=e^7-1/8
Directions: Simplify by multiplying the expressions.
1. (X + 8) (x-8)
2. (y + 10) (Y-10)
3. (m-4)(m + 4)
4. (n - 9) (n + 9)
5. (3x + 1)(3x - 1)
6. (5c+4)(5c - 4)
7. (11z-7)(11z + 7)
8. (20x + 9) (20x-9)
9. (8x + 3y)(8x - 3y)
Answer:
[tex] 1.{x}^{2} - 64[/tex]
[tex]2. {y}^{2} - 100[/tex]
[tex]3. {m}^{2} - 16[/tex]
Answer:
1. (x + 8) (x - 8) = x^2 - 64
2. (y + 10)(Y - 10) = y^2 - 100
3. (m - 4)(m + 4) = m^2 - 16
4. (n - 9)(n + 9) = n^2 - 81
5. (3x + 1)(3x - 1) = 9x^2 - 1
6. (5c + 4)(5c - 4) = 25c^2 - 16
7. (11z - 7)(11z + 7) = 121z^2 - 49
8. (20x + 9)(20x - 9) = 400x^2 - 81
9. (8x + 3y)(8x - 3y) = 64x^2 - 9y^2
Step-by-step explanation:
:)
what is the big-oh order of the following growth expression? f(n)=24n 2nlg(n) 280
The big-Oh order of the expression f(n) = 24n²nlogn + 280 is O(n²), which means that the time complexity of the algorithm is proportional to n².
The big-Oh order is a way of measuring the growth of a mathematical expression in terms of time complexity. It is used in computer science to analyze algorithms and to predict their performance.
In this case, we are looking at the big-Oh order of the expression f(n) = 24n²nlogn + 280.
To determine the big-Oh order, we need to find the dominant term in the expression, or the term that grows the fastest as the input size (n) increases.
In this expression, the dominant term is 24n²logn, since it grows much faster than the constant term 280.
Now, we can simplify the expression further. The logarithmic term is a much slower growing term compared to the polynomial term, so we can ignore it.
This means that the big-Oh order of the expression is O(n²), which means that the time complexity of the algorithm represented by the expression is proportional to n².
This means that the time taken by the algorithm will increase rapidly as the input size (n) increases.
Complete Question:
What is the Big-Oh order of the following growth expression?
f(n)=24n+2nlg(n)+280
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Slope is -2, y-intercept is 1 what would be the equation?
Answer: Y=-2x+1
Step-by-step explanation:
because the slope is x and the 1 is y-intercept
Answer: The slope and y-intercept calculator takes a linear equation and allows you to calculate the slope and y-intercept for the equation. The equation can be in any form as long as its linear and you can find the slope and y-intercept.
Step-by-step explanation:
Jordan has an extension ladder that currently reaches a height of 1135 feet. She needs the ladder to extend to a height of 1515 feet. How much longer, in feet, does the ladder need to be extended
Answer: 380 ft
Step-by-step explanation: To find the length in between, you simply subtract the numbers.
1,515 - 1,135 = 380
Therefore, the ladder needs to be extended 380 ft.
4) Which equation is true when x not when x = -10?
Answer:
x^3 = 1000
Step-by-step explanation:
a confidence interval is an interval calculated from the population data, where we strongly believe the true value of the population parameter lies.T/F
True, A confidence interval is an interval calculated from the population data, where we strongly believe the true value of the population parameter lies.
Now, According to the question:
A confidence interval (CI) refers to the amount of uncertainty associated with a sample population estimate (the mean or proportion) of a true population. Say you wanted to determine the average age of victims of robberies in Chicago last year. Now, while there is a true answer, say 30 years old, the best you can do is find an interval that the true answer probably lies in, say, 20-40 years old.
The confidence interval is the sample mean or proportion plus or minus the margin of error (ME), which is the value used to calculate the upper limit and lower limit of the sample statistic. In this case, the upper limit is 40, and the lower limit is 20.
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(2 points) is the statement ∃x∀y(xy = 0) true or false? the domain of discourse is the set of real numbers. explain.
The statement ∃x∀y (xy = 0) the domain of discourse is the set of real numbers is true.
The term called domain in math is defined as the set of values that we are allowed to plug into our function.
Here we have know that the statement ∃x∀y(xy = 0) and the domain of discourse is the set of real numbers
Here we have to check whether the given statement is true or not.
Here we know that the domain of each variable consists of all real numbers ∀x∃y(xy =0 )
Here we also know that for every real value of x function x2 =y exist means there exist value y which also a real number.
Hence the truth value is TRUE.
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Solve the polynomial equation. x^4+7x^2-144=0
Answer:
x = 3
Step-by-step explanation:
Let's check
3^4 + 7(3)^2 - 144 = 0
81 + 63 - 144 = 0
144 - 144 = 0
0 = 0
So, x = 3 is the correct answer.
Rashon is designing a new board game, and is trying to figure out all the possible outcomes. How many different possible outcomes are there if he rolls a fair die in the shape of a pyramid that has four sides labeled 1 to 4 and flips a coin?
Answer:
Numbers on die = 1, 2, 3, 4
Colors on board = Red, Green, Blue, Orange (equal sized sections)
To find:
The number of different possible outcomes are there if she rolls a fair die in the board.
Solution:
According to the given information,
The total possibilities for numbers = 4
Total possibilities for colors = 4
Total possibilities = Possibilities for number × Possibilities for colors
= 4x4
= 16
So, total 16 possible outcomes are there if she rolls a fair die in the board.
Let Red=R, Green=G, Blue=B, Orange=O, then list of total possible outcomes is:
{1R,1G,1B,1O,2R,2G,2B,2O,3R,3G,3B,3O,4R,4G,4B,4O}
Therefore, the total possible outcomes are 16 and the lies of outcomes is {1R,1G,1B,1O,2R,2G,2B,2O,3R,3G,3B,3O,4R,4G,4B,4O}.
There are 8 different possible outcomes if Rashon rolls a pyramid-shaped die labeled with 4 sides and flips a coin.
What is Probability?It is a branch of mathematics that deals with the occurrence of a random event.
If Rashon rolls a pyramid-shaped die that has four sides labeled 1 to 4, then the number of possible outcomes for the die roll is 4.
Additionally, flipping a coin has 2 possible outcomes, either heads or tails.
To find the total number of possible outcomes for rolling the die and flipping the coin, we need to multiply the number of outcomes for the die roll by the number of outcomes for the coin flip.
So, the total number of possible outcomes for rolling the die and flipping the coin is:
4 (number of die outcomes) x 2 (number of coin outcomes) = 8
Therefore, there are 8 different possible outcomes if Rashon rolls a pyramid-shaped die labeled with 4 sides and flips a coin.
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You deposit $3000 in an account that pays 3.25% annual interest. Find the balance after 7 years if the interest is compounded quarterly.
Work Shown:
A = P*(1+r/n)^(n*t)
A = 3000*(1+0.0325/4)^(4*7)
A = 3762.91169916373
A = 3762.91
Build a function that describes Karas finances of the scenario where money is the y variable and the amount of skateboards is X
A variable is an alphabet or phrase used to represent an unknown quantity, unknown value, or unknown number in mathematics.
What is the difference between function and variable?The values of one or more independent variables determine the values of a single dependent variable in a mathematical connection known as a function. Function denotes a relationship between two variables where one influences expression the other (s).
Here,
Given :
=> 50 assembly kit be y
and => 20 profit be x
Thus,
Equation is = > 50y + 20y = 15
In mathematics, a variable is an alphabet or phrase that denotes an unknowable quantity, unknowable value, or unknowable number. In the case of algebraic expressions or algebra, the variables are employed specifically.
A graph is considered to be a function if any vertical line formed can cross it at most one point. The graph is not a function if it contains any locations where a vertical line can pass through it twice or more.
An expression, rule, or law in mathematics that specifies the relationship between an independent variable and a dependent variable (the dependent variable).
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Using division, what is the quotient (3x³ + 4x - 32) = (x - 2)?
O 3x² + 6x - 16
O 3x² - 6x + 16
O 3x² + 6x + 16
O 3x² - 6x - 16 +
1
(x-2)
Answer:
3x² + 6x + 16
Step-by-step explanation:
how many liters is 79.1 ml? calculate and type your answer with correct significant numbers. (show your work for full credit)
79.1 mL is equal to 0.0791 litres with correct significant figures.
Unit conversion is a process with multiple steps involving multiplication or division by a numerical factor, particularly a conversion factor. The procedure may also demand the selection of the correct number of substantial digits and rounding. Different units of conversion are used to calculate different parameters.
We convert the units of any quantity to understand better. For example, the length of a table is measured in inches; on the other hand, the length of a garden is measured in yards to make it simple to comprehend. We cannot calculate the length of a finger in miles.
79.1 mL is equal to 0.0791 litres. To convert millilitres to litres, we divide the number of millilitres by 1000:
79.1 mL / 1000 = 0.0791 liters
So, 79.1 mL is equal to 0.0791 litres with correct significant figures.
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someone rolls a fair six-sided die and you win points equal to the number shown. what is the expected number of points after one roll? after 2 rolls? after 100 rolls?
All parts of the problem regarding die rolls have been solved and explained below.
In order to find the probability of getting any one point out of the 6 after rolling the die, we first need to Add up all of the number of points in the die, that is -
= 1+2+3+4+5+6
= 21.
We also know that after any roll of one die, the probability of getting about one particular point is 1/6.
So, the expected number of points after one roll can be calculated is-
= 21/6= 3.5
After two rolls, we can just twice the probability of it happening before-
= (2 x 21)/6 = 7.
Similarly, after 100 rolls = 350, and after N rolls, 3.5(N).
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What is value of ∫ (cos^2 x +cos x) dx ?
HELP GEOMETRY
Segment GE is an angle bisector of both angle HEF and angle FGH. Prove triangle HGE is congruent to triangle FGE.
Match the correct statement with its reasoning to complete the proof.
Segment GE is congruent to Segment GE
Angle HEG is congruent to angle FEG, and angle HGE is congruent to angle FGE
Triangle HGE is congruent to triangle FGE
Options:
They are the same segment
Definition of angle bisectors
Angle side angle
Answer:
Segment GE is congruent to segment GE - They are the same segment
Angle HEG is congruent to angle FEG, and angle HGE is congruent to angle FGE - Definition of angle bisectors
Triangle HGE is congruent to triangle FGE - Angle Side Angle
7. Write 3 x 3 x 3 x 3 x 3 x 3 using
exponents.
O A. 6³
O B. 3^3
O C. 12³
O D. 9^4
Answer:
(All given options are incorrect)
Correct answers: [tex]3^6[/tex] or [tex]9^3[/tex]
Step-by-step explanation:
There are several ways to write [tex]3\times3\times3\times3\times3\times3[/tex].
The first is as a power of 3. An exponent represents the number of times a number is multiplied by itself. This would be written as [tex]3^6[/tex].
The second is as a power of 9. Combining each pair of [tex]3\times3[/tex] gives:
[tex]9\times9\times9[/tex] which is equal to [tex]9^3[/tex].
None of the given options are correct for [tex]3\times3\times3\times3\times3\times3[/tex]. Please double check that your question and answer options are written correctly. Correct answer options would be [tex]3^6[/tex] or [tex]9^3[/tex].
What coefficients correctly balance this reaction?
CH₂OH + 0₂
_CO, + _ _ _H,O
1
2
3
4
-
1; 2; 1; 2
3; 3; 2; 4
2; 3; 2; 4
1; 3; 1; 2
8²
Answer:
Step-by-step explanation:
i wish i knew! i wish i knew you wanted me
simplify (4/5a - 8) + ( -2/5a - 2/3)
use the graph to write a linear function that relates y to x
Answer:
f(x) = -4[tex]x[/tex] - 2 or y = -4[tex]x[/tex] - 2
Step-by-step explanation:
In this question, you should use the graph to write the function/equation in slope intercept form.
y = mx + b where m is the slope and b is the y intercept
To calculate the slope, you can use rise/run between any two points. I will use the points (-2, 6) and (0, -2). In these points, the "rise" would be -8 as that is the number of units they are away from each other vertically. It is negative because the line obviously has a negative slow as it is travelling from up to down. The run in this case would be 2 as that is the distance the two points are away from each other horizontally.
Then, substitute.
[tex]\frac{-8}{2}[/tex] = -4, so m = -4
Now we will find the b value.
B is the y-intercept, or what the y value of the coordinate of the point that the line touches the y-axis. The coordinate is (0, -2). Therefore, the b value is 2.
from base camp, a hicker walks 3.5 miles west and 1.5 miles north. another hiker waks 2 miles east and 0.5 miles south. to the nearest tenth of a mile, how far apart are the hikers?
The hikers are 5.9 miles apart.
Let O represents the base camp,
Suppose after walking 3.5 miles west, the first hiker's position is A, then after going 1.5 miles north from A his final position is B,
Similarly, after walking 2 miles east, the second hiker's position is C then going towards 0.5 miles south his final position is D.
By making the diagram of this situation,
Let D' is the point in line AB,
Such that, AD' = CD
In triangle BD'D,
BD' = AB + AD' = 1.5 + 0.5 = 2 miles,
DD' = AC = AO + OC = 3.5 + 2 = 5.5 miles,
By Pythagoras' theorem,
BD² = BD'² + DD'²
[tex]BD = \sqrt{2^{2} + 5.5^{2} } = \sqrt{4+30.25} =\sqrt{34.25} = 5.9[/tex]
Hence, the hikers are 5.9 miles apart.
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describe a situation that represents 7 x -8
Fill in the blanks below in order to justify whether or not the mapping shown represents a function.
The mapping diagram does not show a function, because the input -1 is mapped into two different values.
The mapping represents a function?A function is a relation that maps elements from one set (called the domain) into another set (called the range), such that each input can be mapped into only one value.
In this case, we have a relation that maps elements from set A into set B. And you can see that the element -1 is mapped into two different values ( which are 8 and 9), then the mapping does not repsent a function.
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Identify the initial value and rate of change for the graph shown. (4 points) A coordinate plane is shown. A line passes through the y-axis at 2 and passes through the point 2 comma 4. a Initial value: 1, rate of change: 2 b Initial value: 2, rate of change: 1 over 2. c Initial value: 2, rate of change: 1 d Initial value: 1 over 2., rate of change: 2
Answer: the initial value is 2 and the rate of change is 1.
Mrs. Ramirez is planning a family reunion and deciding where to buy food and drinks. She considers the information below. She expects 96 family members to attend. How much would it cost to buy 96 hotdogs purchased from Value Market? Show your work.
b) How much would 96 hotdogs cost from Sammy's Bulk Store? Show your work.
a) 96 hotdogs purchased from Value Market would cost $96. This is because Value Market sells hotdogs for $1 each. Therefore, 96 hotdogs would cost $96.
What is Value Market?Value Market is an investment approach that focuses on buying assets that have the potential to generate returns that exceed the market average over the long term. It involves buying stocks or other assets at a price lower than their intrinsic value, or the stock's true underlying worth. This approach requires investors to do extensive research and analysis to identify undervalued assets and purchase them at prices that are below their true worth.
b) 96 hotdogs purchased from Sammy's Bulk Store would cost $48. This is because Sammy's Bulk Store sells hotdogs in packs of 8 for $4 each. Therefore, 96 hotdogs would cost $48 (96/8 = 12 packs of 8 hotdogs, 12 x $4 = $48).
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