If -x + 5y = 7 is a true equation, what would be the value of -2(-x + 5y)?
Answer:
-14
Step-by-step explanation:
If u put x+5y into -2(-x+5y)
Add all that up
-2(x+5y) =(-2) (7) = -14
A toy car was kicked toward the target. the horizontal component of velocity was 8 m/s and the vertical component was 6m/s. calculate the magnitude of the resultant velocity of the soccer ball.
The magnitude of the resultant velocity of the soccer ball is 10 m/s .
Let the horizontal component of velocity be [tex]V_{x}[/tex] and the vertical component of velocity be [tex]V_{y}[/tex].
The magnitude of the resultant velocity will be represented by V.
So, we can write
The horizontal component of velocity = [tex]V_{x}[/tex] = 8 m/s
The vertical component of velocity = [tex]V_{y}[/tex] = 6 m/s
The relation between horizontal component, vertical component and resultant velocity is,
[tex]V^{2} = V_{x} ^{2} + V_{y} ^{2}[/tex]
On substituting value of horizontal component and vertical component, we get
[tex]V^{2}[/tex] = [tex](8)^{2} + (6)^{2}[/tex]
[tex]V^{2}[/tex] = 64 + 36
[tex]V^{2}[/tex] = 100
V = [tex]\sqrt{100}[/tex]
V = 10 m/s
The magnitude of the resultant velocity of the soccer ball is 10 m/s .
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Determine whether the statement is true or false if x=8, y=2 , and z=3 .
x+y>z+y
Given that x = 8, y = 2, and z = 3, the inequality x + y > z + y is true.
Inequality refers to the relationship between two non-equal expressions. It can be denoted by > for greater than, < for less than, >/= for greater than and equal to, and </= for less than and equal to.
To check if the inequality x + y > z + y is true when x = 8, y = 2, and z = 3, plug in or substitute the value of each variable to the inequality and evaluate.
x + y > z + y
8 + 2 > 3 + 2
10 > 5
Since 10 is greater than 5, the given values satisfies the inequality, then the statement is true.
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Evaluate the given expression for x = 10.
8x+7
matt is five years older than twice his cousin andy’s age. the sum of their ages is less than 35. let x represent andy's age. which inequality represents andy’s possible age? 0
The inequality: y < 10 represents Andy's age.
What is an inequality?Inequality refers to a relation which makes a non-equal comparison between two numbers or other mathematical expressions.
Given:
Matt is five years order than twice Andy's agesum of their ages < 35x = Andy's ageTo find: Inequality that represents Andy's possible age.
Finding:
Let y = Andy's age
According to the question,
x = 2y + 5
x + y < 35
=> 2y + 5 + y < 35
=> 3y < 30
=> y < 10
Hence, the inequality: y < 10 represents Andy's age.
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Just the answer please
Answer:
One can use either the slope formula m = (y2 – y1)/(x2 – x1) or the standard line equation, y = mx + b to solve for the slope, m.
Step-by-step explanation:
Pick two points on the line and determine their coordinates. Determine the difference in y-coordinates of these two points (rise). Determine the difference in x-coordinates for these two points (run). Divide the difference in y-coordinates by the difference in x-coordinates (rise/run or slope).
Your friend has $100 when he goes to the fair. he spends $10 to enter the fair and $20 on food. rides at the fair cost $2 per ride. which function can be used to determine how much money he has left over after x rides? f(x) = −2x 70 f(x) = 2x 70 f(x) = −2x − 70 f(x) = −30x $100
The function which can be used to determine the amount of money he has left over after x rides is f(x)=-2x+70.
This function is linear. A linear variable function can be written in the form of y=f(x)=a+bx, where a and b are integers and x, is the variable. This function has one independent variable and one dependent variable. In the above given function y=f(x)=a+bx; y is the dependent variable and x is the independent variable.
Here since x number of rides are taken and the cost per ride is x so the total cost of x rides is given as 2x.
Since there is a total of $100 and an amount of ($10+$20=$30) is spent on entry and food respectively.
Therefore, total amount left after all the expenses can be expressed as:
f(x)=100-(30+2x)
f(x)=70-2x
f(x)=-2x+70
Therefore, function which can be used to determine the amount of money he has left over after x rides is f(x)=-2x+70.
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(Please help)-5 - (-5/3)
Answer:
25/3
Step-by-step explanation:
How can you use surveys, experiments and observational studies to make inferences about a population?
Surveys, Experiments, and Observational studies are some common methods of data collection in statistical studies that involve people.
A survey is a means to gather information about a group of individuals by asking some of them to respond to questions. A survey may require participants to fill out forms, respond to online questionnaires, take part in in-person interviews, or respond to questions over the phone.
In an experiment, as opposed to an observational study, different treatments are purposefully applied to several groups, and the groups are then compared to see whether there are any differences in a certain variable of interest termed a response. Researchers can determine whether various treatments have distinct effects by using a well-designed experiment.
In an observational study, a researcher utilizes data from observations to learn about a group of people. Aside from assessing their replies, the people being watched are particularly not hampered.
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what's the differences between indirect and direct object? and can i get an example plss
Answer:
Step-by-step explanation:
A direct object is the object in which the verb is acting on. For example, in the sentence “He sold his car,” “car” is a direct object. An indirect object is the recipient of the direct object, as in “The man gave his wife a necklace.” “Necklace” is the direct object, and “wife” is the indirect object
Can someone explain how to do proofs?
Answer:
Draw the figure that illustrates what is to be proved. ...
List the given statements, and then list the conclusion to be proved. ...
Mark the figure according to what you can deduce about it from the information given. ...
Write the steps down carefully, without skipping even the simplest one.
Step-by-step explanation:
please help me i need to get this
Hello,
[tex]6x + 2 = x + 17[/tex]
[tex]6x - x = 17 - 2[/tex]
[tex]5x = 15[/tex]
[tex]x = \frac{15}{5} = 3[/tex]
Convert 99 grams into pounds. Round your answer to the nearest hundredth.
Convert 99 grams into pounds is 0.22.
In the US, the pound is the unit of mass that is utilized. It is symbolized by the letter lbs. Therefore, we must calculate the estimated number of grams in a pound. Both pounds and grams can be converted into one another as units of mass.
Since both systems of units may carry the same mass, the fundamental conversion rate between pounds and grams is crucial for international trade. Because just writing the numbers makes no sense, units should always be written after the final solution has been evaluated. The method of transposition may be used to discover the conversion of a given number of values from one unit to another by multiplying or dividing both sides of the equation by the same number.
Covert the unit = 99 gram
99 gram = 0.218258 pound
Rounding the converted number is 0.22.
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) Find the value of x.
V
X+2
91°
44°
Step-by-step explanation:
remember, the sum of all angles in a triangle is always 180°.
and the sum of all angles around a single point on one side of a line is also always 180° (because that line is like a diameter of any circle with that point as center, and half a circle is 180°).
3)
the third inner angle of the triangle is
180 = 63 + 51 + angle = 114 + angle
angle = 66°.
x = 180 - 66 = 114°
4)
the third inner angle of the triangle is
180 = 86 + 45 + angle = 131 + angle
angle = 49°
x + 30 = 180 - 49 = 131°
x = 101
Use a related equation that has the variable on one side. Then simplify the other
side.
12n = 48
n = 60
n=36
n=4
n=1/4
Answer:
n=4
Step-by-step explanation:
12n/12 = 48/12 the n=4
n = 60
n=36
n=4
n=1/4
a politician is interested in the proportion of voters in his district who think he is doing a good job. define the following in terms of the study. give examples where appropriate.
The percentages of voters for politicians districts are determined by parameters including district work, leadership, teamwork, etc.
Who are politicians, exactly?A politician is a person who participates in party politics by voting or holding elective office in the government. Legislation is proposed, supported, rejected, and created by politicians to rule the nation and, by implication, its citizens. Politics is the process by which those who live in groups decide on things. Politics is the process of establishing agreements between individuals so that they may coexist in social units like tribes, cities, or nations. Some individuals may invest a significant amount of effort in reaching such agreements in huge groupings, such as nations. A formal set of fundamental objectives that are backed by a political party or individual candidate in order to appeal to the general public is known as a political party platform (US English), party program, or party manifesto (preferential term in British and frequently Commonwealth English). The ultimate goal of these documents is to win the support and votes of the general public on complex issues or topics.
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200,40,8 arithmetric or geometric or neither
Answer:
this is geometric, you are multiplying by 1/5.
Step-by-step explanation:
a starting lineup in a basketball consists of two guards, two forwards, and a center. a. a certain college team has on its roster 4 centers, 5 guards, 5 forwards, and one individual (x) who can play either guard or forward. how many different starting lineups can be created? (hint: consider lineups without x, then lineups with x as guard, then lineups with x as foward.)
Different starting lineups can be created - 120+60+120=300. A certain college team has on its roster 4 centers, 5 guards, 5 forwards, and one individual (x) who can play either guard or forward.
1. A lineup without x is an example. You must decide.
5 quards, 2 guards;two of the three forwards;from 4 centers, 1 center.It can be made as -
2C5 × 2C3× 1C4 = 10× 3×4 = 120 ways
2. Consider starting lineups with guard x. You must decide.
2 guards chosen from 6 quards (at least one of them must be x);two of the three forwards;from 4 centers, 1 center.1C5×2C3×1C4 = 5×3×4 = 60 ways
3. Think about lineups where x is the forward. You must decide.
5 quards, 2 guards;2 forwards from 4 forwards (x must be one of them);from 4 centers, 1 center.2C5×1C3×1C4 = 10×3×4 = 120 ways.
Therefore, total number different lineups is - 120+60+120=300.
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Natalie reads for 6/8 hour on 6 days each week. how many hours does natalie read each week
Natalie read 4.5 hours each week
In this question,
Natalie reads for 6/8 hour on 6 days each week.
We need to find how many hours Natalie read each week.
Based on the given conditions, formulate: 6/8 × 6
Write as a single fraction:
= (6 × 6)/8
= (3 × 3)/2 .................(Cross out the common factor)
= 9/2
= 4.5 hours
Therefore, Natalie read 4.5 hours each week
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__________ is the principle that the statistical analysis of plaintext and ciphertext results in a form of dispersion rendering one structurally independent of the other.
Diffusion is the principle that the statistical analysis of plaintext and ciphertext results in a form of dispersion rendering one structurally independent of the other.
In a simple language, whenever there is a change in one character of the plaintext there is a multiple changes in the ciphertext. The changes do not reveal the information as the structure of plaintext.
What is ciphertext?
Whenever the encrypted text changes from plaintext to encrypted algorithm then it is known as the ciphertext. It cannot be read until it is decrypted with the help of the key. And the decryption cipher algorithm changes ciphertext to plaintext text to make it readable.
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Please help me ASAP due today please
A fraction that is equals to 5 is given by: 10/2.
What is a fraction?A fraction is modeled as follows:
a/b.
In which:
a is the numerator.b is the denominator.The equivalent of a fraction is a division operation, that is, the example fraction is equivalent to the division of a by b.
Hence, a fraction that is equivalent to 5 is a division of two numbers that result in 5, for example 10 and 2, hence:
A fraction that is equals to 5 is given by: 10/2.
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gragh the linear equation. find three points to solve the equation ,then plot on the gragh . -3x+2y=2
The attached below is the graph and the three points to solve the equation is (0,1) , (1,5/2) and (-1,-1/2)
According to the question the equation that we have been given is
-3x + 2y = 2
We need to graph the linear equation. For this we will first put different values of x in the above equation and then find the values of y which will be the coordinates of the graph.
First put x = 0
-3(0) + 2y = 2
2y = 2
y = 1
hence the first coordinate is (0,1)
Similarly put, x = 1
-3(1) + 2y = 2
2y = 5
y = 5/2
when x= -1 then y = -1/2
Thus the three point or coordinates are (0,1) , (1,5/2) and (-1,-1/2) and below is the graph.
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Olumide plays the piano and quitar. for every five minutes of piano practice, he spends 8minutes practicing guitar. how many minutes will olumide practice piano if he spends 64 minutes practicing guitar
Total time Olumide spends practicing piano is 40 minutes.
For every five minutes of piano practice, Olumide spends 8minutes practicing guitar.
Total time he spends practicing guitar = 64 minutes
We need to divide 64 by 8 to get the number of times he plays guitar.
The number of times he plays guitar = 64 / 8 = 8
According to question, he plays guitar after every piano practice.
So, The number of times he plays piano = The number of times he plays guitar = 8
Each time he practice piano for 5 minutes. So,
Total time he spends practicing piano = 8 × 5 = 40 minutes.
Total time Olumide spends practicing piano is 40 minutes.
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a region is bounded by semicircular arcs constructed on the side of a square whose sides measure $2/\pi$, as shown. what is the perimeter of this region?
The perimeter of this region is 4.
What is perimeter?playing a card game, set of cards that are numbered or outlined (or both) and are utilized for messing around, for schooling, for divination, and for conjuring. Generally, Western playing a card game are made of rectangular layers of paper or slight cardboard stuck together to frame a level, semirigid material. Some have proposed that the playing a card game previously worked as "play cash" and addressed the stakes utilized for other betting games, and later turned out to be essential for the actual games. Others have proposed associations between playing a card game and chess or dice games, yet this is again theoretical. Different games, for example, a 25-card variation of Euchre which involves the Joker as the most elevated trump, make it one of the main in the game. Frequently, the Joker is a special case, and subsequently permitted to address other existing cards.
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Aisha buys a new car.
Cash price: $4500
Credit terms:
Deposit 25% of cash price + 12 monthly payments of $320
She buys the car using the credit terms. How much more than the cash price will she pay overall for the car?
465 is the cost of the cash price will she pay overall for the car.
What is cost ?
The entire cost of all fixed and variable expenses for a particular stage in the value chain is the total cost of a business function. In other words, it is the overall cost incurred during the various stages a product goes through to reach the consumer.Your cost function might resemble this, for example, if your variable costs for labor are fixed regardless of quantity while your variable costs for supplies vary depending on the amount of each item. Total costs are calculated as fixed costs plus labor costs plus (unit count * material variable costs).25 % of cash price 4500 × 25% = 1125
12 monthly 320 × 12 = 3840
All 1125 + 3840 = 4965
more than 4965 - 4500 = 465
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i don’t get it help i need to understand it kinda confusing please help me if u don’t i’ll fail
Answer: Brainliest? It's a lot of questions
Step-by-step explanation:
7) 20*50 = 1000
8) 10^2 = 100
20*6=120
120>100
Yes, she will finish the reading in time because she will read 20 pages more than needed.
9) 10 x 20 x 30 x 40 = (1 x 10) x (2 x 10) x (3 x 10) x (4 x 10)
=(1 x 2 x 3 x 4) x (10 x 10 x 10 x 10)= 24 x 10000 = 240000
10) Called different things different places do yourself
11) (10^3 x 12) + (10^2 x 35)
=(1000 x 12) + (100 x 35)
=12000+3500
=15500
Hiroshi and Giulio share a common investment goal and once they reach their goals, they will withdraw their money.
Giulio starts out with 3
3
times as much money as Hiroshi and it takes Hiroshi 5
5
times longer than Giulio to reach this goal.
They both use the same bank that provides a 5
5
% annual interest rate compounded quarterly.
Work out how long it takes Hiroshi to reach his investment goal?
Give your answer correct to the nearest year.
It takes Hiroshi 30 years to reach his investment goal.
The formula for calculating the amount received on the principal amount (P) after t years at r% rate of interest is-
Amount = P(1 + r/100)^t
Let the principle amount with Hiroshi be P
then, the amount that Giulio starts with = 3P
Let time period for Giulio's investment = t
Then, the time period for Hiroshi's investment = 5t
Rate = 5%
As the investment goals of both the people are equal, they will get the same amount.
Therefore, we get the following equation-
P(1 + 20/100)^5t/4 = 3P(1 + 20/100)^t/4
(1 + 20/100)^5t/4 = 3(1 + 20/100)^t/4
[(1 + 20/100)^5t/4] /[(1 + 20/100)^t/4] = 3
(1 + 20/100)^(5t/4- t/4) = 3
(1 + 20/100)^(4t/4) = 3
(1 +0.2)^t = 3
(1.2)^t = 3
Taking log on both sides-
Log (1.2)^t = log 3
t log 1.2 = log 3
t = log 3/ log 1.2
t = 6.025
Time taken by Hiroshi to reach his investment goal = 5t
= 5(6.025)
= 30.128
Thus, it takes Hiroshi 30 years to reach his investment goal.
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What’s this I don’t understand
Answer:
16/725
Step-by-step explanation:
r. gao and a. j. kleywegt. distributionally robust stochastic optimization with wasserstein distance. arxiv preprint arxiv:1604.02199, 2016.
Distributionally robust stochastic optimization (DRSO) is a framework for decision-making problems under certainty, which finds solutions that perform well for a chosen set of probability distributions.
Review on r. gao and a. j. kleywegt. distributionally robust stochastic optimization with wasserstein distance -
A paradigm for decision-making under certainty called distributionally resistant stochastic optimization (DRSO) seeks solutions that function well for a specified set of probability distributions. There have been many different methods offered for describing a set of distributions. The decision is significant since it has an impact on the outcomes, and the relative effectiveness of various options depends on the traits of the issues. In this study, we take into account issues where various random variables show some degree of reliance, but the precise values of the parameters describing the dependence are unknown.We also get the DRSO problem in a dual reformulation. The formulation also has the advantage of avoiding a problem related to the one-sided moment constraints in moment-based DRSO issues, which is a desirable result.Learn more about DRSO
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Can someone explain this please.
Using proportions, the solution for the golden section is given as follows:
|AC|/|AB| = 1.6181.
What is a proportion?A proportion is a fraction of a total amount, and the measures can be related using a rule of three, which derives from proportional relationships.
Due to this, relations between variables, either direct(when both increase or both decrease) or inverse proportional(when one increases and the other decreases, or vice versa), can be built to find the desired measures in the problem, or equations to find these measures, involving operations such as division and multiplication, as they involve unit rates.
For this problem, the segment lengths are given as follows:
|AC| = 1.|AB| = x.|BC| = 1 - x.The following proportion is true for the segment:
|AC|/|AB| = |AB|/|BC|
Hence:
1/x = x/1 - x.
x² = 1 - x
x² + x - 1 = 0.
Which is a quadratic equation with solution x = 0.618.
Then the solution for the golden section is given as follows:
|AC|/|AB| = 1/x = 1/0.618 = 1.6181.
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Answer:
(1 +√5)/2 ≈ 1.618034
Step-by-step explanation:
Given point B on segment AC, you want the "golden proportion" ratio AC/AB, such that AC/AB = AB/BC. A diagram is shown with A=0, B=x, C=1.
RedefineWe can solve for the golden proportion directly by redefining points on the line segment as ...
A = 0B = 1C = rThen we have AB = 1, AC = r, BC = r-1 and the proportion of interest is ...
AC/AB = AB/BC
r/1 = 1/(r -1)
SolutionCross-multiplying gives ...
r² -r = 1
Completing the square, we have ...
r² -r + 1/4 = 5/4
(r -1/2)² = 5/4
Taking the square root gives ...
r - 1/2 = 1/2√5
r = 1/2 + 1/2√5 = (1 +√5)/2 ≈ 1.618034
The golden ratio is (1+√5)/2 ≈ 1.618034.
__
Additional comment
This ratio appears many places in math, science, and nature. It is commonly given the name Φ or φ (phi). For example, it is the limiting value of the ratio of successive terms of the Fibonacci sequence, and is deeply embedded in the quantum description of the universe.