Answer:
the first one
Step-by-step explanation:
Find the distance between the two points shown on the graph below, located at (1, 2) and (3, 1).
The distance between the two points as depicted on the graph is:
√5.
Given, the points are:
(1,2) = (x₁,y₁) and
(3,1) = (x₂,y₂)
We know that distance between two points is:
d = √(x₂-x₁)²+(y₂-y₁)²
d = √(3-1)²+(1-2)²
d = √(2)²+(-1)²
d = √4+1
d = √5
Hence we get the distance between two given points as √5
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Please help me with this homework
Answer:
$3.60
Step-by-step explanation:
Find the area of the region in the first quadrant enclosed by x-axis, line x=3y and the circle x2+y2=4.
Answer:
Step-by-step explanation:
john lennon
o MULTIPLE CHOICE QUESTION What should the graph look like for: x <3
if you have a graphing calculator (i use a website called desmos) put in x < 3. i attached a photo of what the graph should look like. the shaded area is where the solutions are. since the shaded area ends with a dotted line, points on that dotted line are not part of the solution.
i hope this helps! sorry i couldn't give a more descriptive explanation... it's pretty much all in the picture lol. have a lovely day! <3
Answer:
getting points since this is an old question tehe
how many solutions does this system for equations have ? PLZ HELP ASAP !
Answer:
Infinitely many solutions
the mass of a radioactive substance follows a continuous exponential decay model. a sample of this radioactive substance has an initial mass of and decreases continuously at a relative rate of per day. find the mass of the sample after two days.
The initial mass of the sample after two days = 8483.45 kg
Given that,
It is known as exponential decay when a population or group of something is deteriorating and the quantity of decline is proportional to the size of the population. In an exponential decay, the overall value falls but the percentage that departs stays the same throughout time.
The exponential decay formula aids in determining the exponential drop, which is a rapid reduction over time. To calculate population decay, half-life, radioactivity decay, and other phenomena, one uses the exponential decay formula.
The standard formula for this type of behavior which is written below:
A = \(Pe^{-rt}\)
Where
A refers the amount left after time t
P refers the initial amount at t = 0
r refers the rate
Here we have given that the mass of a radioactive substance follows a continuous exponential decay model, with a decay rate parameter of per day.
A sample of this radioactive substance was taken after two days.
And we need to find if the sample has a mass of today, then the initial mass of the sample.
Now, we have to substituting the values,
Let us assume,
P = 9575 kg
r = 0.12
t = 1
Then we get the equation as,
A = (9575 kg) \(e^{-0.12*1}\)
When we simplify this one, then we get,
A = (9575 kg) \(e^{-0.12}\)
A = (9575 kg) 0.886
A = 8483.45 kg
Therefore,
The initial mass of the sample after two days = 8483.45 kg
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FIRST CORRECT/READABLE/UNDERSTANDABLE ANSWER WILL GET BRAINLIEST AND A THANKS ON THEIR PROFILE!
Answer: B
Step-by-step explanation:
To get no solution you need to have 2 sides of the equations that don't match. If you go through B you will end up getting 3x- (11/7)=3x-2 which is not true.
kaylin bought a soda and two bags of popcorn for $3.00. Her brother bought three sodas and a bag of popcorn for $6,50.
The amount of a soda is $2 and a bag of popcorn costs $0.5
How to determine the amount of a soda and a bag of popcorn?From the question, we have the following parameters that can be used in our computation:
Kaylin: = A soda and 2 bags of popcorn = $3.00.
Her brother: 3 sodas and 1 bag of popcorn = $6.50
So, we have the following system of equations
x + 2y = 3
3x + y = 6.5
Where
x =soda
y = bag of popcorns
Make x the subject in x + 2y = 3
So, we have the following representation
x = 3 - 2y
Substitute x = 3 - 2y in 3x + y = 6.5
3(3 - 2y) + y = 6.5
Expand
9 - 6y + y = 6.5
Evaluate the like terms
-5y = -2.5
Divide by 5
y = 0.5
Recall that
x = 3 - 2y
So, we have
x = 3 - 2 * 0.5
Evaluate
x = 2
Hence, the cost of soda is $2
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Five students enter a school talent competition the scatter plot shows the number of hours each student has rehearsed and the score of the students Calculate the balance point of the data
The balance point of the data, given the number of hours rehearsed and the score would be (5, 50).
How to find the balance point ?The balance point on the graph is simply the average of the x vertices and the y vertices.
The average of the x vertices is:
= ( 1 + 3 + 4 + 8 + 9 ) / 5
= 25 / 5
= 5
The average of the y vertices is:
= ( 30 + 50 + 20 + 90 + 60 ) / 5
= 250 / 5
= 50
This then means that the balance point would be ( 5, 50 ).
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A radioactive compound with mass 320 grams decays at a rate of 27% per hour. Which equation represents how many grams of the compound will remain after 7 hours?
Answer:
320 grams ÷ 27% = 8.3 grams
Step-by-step explanation:
mark brainliest plss
In a data set with a normal distribution, the mean is 59 and the standard deviation is 3.
Part A
About what percent of the data lie between 53 and 62?
Part B
Complete: About 95% of the data lie between ______ and ________.
Answer:
Part A: 81.5%
Part B: About 95% of the data lie between 53 and 65.
Step-by-step explanation:
Note: the percentages marked in red and blue never change
For Part A, we add the percentages that are between 53 and 62. So, 34% + 34% + 13.5% which is 81.5%
For Part B, we can look at this graph and seen that 95% of this data set lies between 53 and 65
Hope this is correct and of help!
3x^2 +6x +18 = 0
solve by completing the sqaure
Answer:
=
−
±
2
−
4
√
2
x=\frac{-{\color{#e8710a}{b}} \pm \sqrt{{\color{#e8710a}{b}}^{2}-4{\color{#c92786}{a}}{\color{#129eaf}{c}}}}{2{\color{#c92786}{a}}}
x=2a−b±b2−4ac
Once in standard form, identify a, b and c from the original equation and plug them into the quadratic formula.
3
2
+
6
+
1
8
=
0
3x^{2}+6x+18=0
3x2+6x+18=0
=
3
a={\color{#c92786}{3}}
a=3
=
6
b={\color{#e8710a}{6}}
b=6
=
1
8
c={\color{#129eaf}{18}}
c=18
=
−
6
±
6
2
−
4
⋅
3
⋅
1
8
√
2
⋅
3
x=\frac{-{\color{#e8710a}{6}} \pm \sqrt{{\color{#e8710a}{6}}^{2}-4 \cdot {\color{#c92786}{3}} \cdot {\color{#129eaf}{18}}}}{2 \cdot {\color{#c92786}{3}}}
x=2⋅3−6±62−4⋅3⋅18
2
Simplify
Answer:
x=-1+or-i radical 5
Step-by-step explanation:
In a café, drinks are priced according to what size they are.
The table shows the different sizes and costs.
Size of drink
Extra Small
Cost
£1.00
£1.50
£2.00
£2.50
£3.00
Small
Medium
Large
Extra Large
a) Gavin pays for one extra small and three large drinks.
Altogether, how much did they cost?
b) Lian pays for one small, one medium and one extra large drink.
She pays with a £10 note.
How much change should she get?
Answer:
for A. Gavin would pay 10. because 1.00 + 3.00 + 3.00 + 3.00 is 10.
and for B. 1.50 + 2.00 + 3.00 = 6.50. so lian would get 3.50 change back.
which of the three curves drawn matches the graph of y = 2x 2 + x?
Answer:
y= 0 1 2 3 4
Step-by-step explanation:
just minus 2 by all of the numbers from x
Find the slope of the line.
Answer:
B
Step-by-step explanation:
divide them by 2
Health and safety guidelines set the highest sound intensity level in the workplace to 90. 0 db. One workshop with 32 similar machines produces a sound intensity level of 92. 0 db. How many of them must be shut down to bring the workshop into compliance with the guidelines?.
The sound intensity level should be decreased by 2 dB to carry the studio into consistency with the rules.
A decrease of 2 dB can be accomplished by one or the other by closing down a portion of the machines (since the sound intensity level declines by 6 dB for each splitting of the sound power) or by introducing sound-sealing materials.
Thus, to carry the studio consistent with the rules, 16 machines would need to be closed down.
It's vital to follow well-being and security rules in the working environment to guarantee the prosperity of representatives and forestall hearing harm. Decreasing the number of machines or introducing soundproofing materials can bring the studio into consistency.
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If TU=114 US=92 and XV=46 find the length of \overline{WX} WX. Round your answer to the nearest tenth if necessary
The length of the line WX is 67.9
We have
Given: TU = 114, US = 92, and XV = 46
We need to find the length of WX.
We know that the length of one line segment can be calculated using the distance formula.
The distance formula is given as:
AB = √(x₂ - x₁)² + (y₂ - y₁)²
Let's find the length of WX:
WY = TU - TY
WY = 114 - 92 = 22
XY = XV + VY
XY = 46 + 20 = 66
WX = √(16)² + (66)² = √(256 + 4356)
WX = √4612 = 67.9
The length of WX is 67.9 (rounded to the nearest tenth).
Hence, the correct option is 67.9.
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Solve by elimination using subtraction.
2x + y = -5
2x - 5y = 13
Answer:
(- 1, - 3 )
Step-by-step explanation:
Given the 2 equations
2x + y = - 5 → (1)
2x - 5y = 13 → (2)
Subtracting (1) from (2) term by term will eliminate the x-0 term
0 - 5y - y = 13 - (- 5) , that is
- 6y = 18 ( divide both sides by - 6 )
y = - 3
Substitute y = - 3 into either of the 2 equations and solve for x
Substituting into (1)
2x - 3 = - 5 ( add 3 to both sides )
2x = - 2 ( divide both sides by 2 )
x = - 1
solution is (- 1, - 3 )
John ran a race in 36 minutes. If each lap takes 9 minutes to run, write and solve an equation to find out how many laps John had to run.
SHOW YOUR WORK AND SOLVE PLEASE
Answer:
4 laps
Step-by-step explanation:
Solved using a proportion.
\(\frac{1}{9} = \frac{y}{36}\)
9 × y = 1 × 36
9y = 36
9y ÷ 9 = 36 ÷ 9
y = 4
en una tienda de ropa, la semana pasada, 3 pantalones y 2 abrigos costaban 245€. Esta semana estos artículos tienen un descuento del 20% y 5% respectivamente. Si ahora un pantalón y un abrigo cuestan 100,75€, ¿qué costaba cada artículo antes de la rebaja?
Solving a system of equations we can see that each pair of pants costs €82.94 and each coat costs €26.37
How to find the original cost?
Let's define the variables:
x = cost of a pant
y = cost of a coat.
First, we know that:
3x + 2y = 245
And then there are discounts of 20% and 5%, and the cost of one of each is 100.75, then:
0.8x + 0.95y = 100.75
Then we have a system of equations:
3x + 2y = 245
0.8x + 0.95y = 100.75
We can isolate x on the second equation to get:
x = (100.75 - 0.96y)/0.8
x = 125.9 - 1.2y
Replace that in the other equation:
3*(125.9 - 1.2y) + 2y = 245
Solving for y:
3*125.9 - 3*1.2y + 2y = 245
y*(2 - 3*1.2) = 245 - 3*125.9
y = (245 - 3*125.9)/(2 - 3*1.2)
y = 82.94
Then the value of x is:
x = 125.9 - 1.2*82.94
x = 26.37
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todo esta en la foto Everything is in the picture
each apple got 1.32 per pound.if Evenly bought 3 pounds ,how much did she pay?
The amount paid by Evenly will be $3.96.
How to calculate the expression?An expression is simply used to show the relationship between the variables that are provided or the data given regarding an information. In this case, it is vital to note that they have at least two terms which have to be related by through an operator.
Some of the mathematical operations that are illustrated in this case include addition, subtraction, etc.
Since each apple got 1.32 per pound. When Evenly bought 3 pounds. The amount paid will be:
= 1.32 × 3
= $3.96
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I need some help please
Answer:
x+2
hope this helps ;)
and cute pfp
Answer:
Step-by-step explanation:
x-1, because 3 fits the criteria, x>=1
Explain what the point (20,160) represents in the context of the situation? Check all boxes that apply A. 160 shirts cost $20
B. 20 shirts cost $160
C. 20,160 shirts cost money
D. The total cost of shirts is 20,160
Answer:
option B is correct option.
Step-by-step explanation:
Explain what the point (20,160) represents in the context of the situation? Check all boxes that apply
Looking at the graph we come to know that 20 shirts cost $160 because x -axis represent number of shirts and y-axis represent Total Cost
So, the point(20,160) means x = 20 and y=160
We have 20 shirts and the cost is $160
So, option B is correct option.
What is the quotient (3x^3+10x^2+10x+4) divided by (x+2)?
Possible answers:
3x^2+16x+42
3x^2+4x+2
3x^2-16x+42
3x^2-4x+2
Answer:
3x^2+4x+2
please see the attached picture for full solution
hope it helps
Good luck on your assignment..
The quotient obtained by dividing the expression (3x³+10x²+10x+4) divided by (x+2) is 3x²+4x+2
What is Division?A division is a process of splitting a specific amount into equal parts.
We are asked to find the quotient obtained by dividing the expression
(3x³+10x²+10x+4) divided by (x+2)
We can also write this expression as i.e. we are asked to find the value of the expression:
3x³+10x²+10x+4/x+2
We can write the expression on the numerator as:
3x³+10x²+10x+4=(3x²+4x+2)(x+2)
Divide both sides by x+2
3x³+10x²+10x+4/x+2=3x²+4x+2(x+2)/x+2
3x³+10x²+10x+4/(x+2)=3x²+4x+2
Hence, the quotient obtained by dividing the expression (3x³+10x²+10x+4) divided by (x+2) is 3x²+4x+2
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Twice the difference between 5 times a number and 6 is 18
Answer:
3
Step-by-step explanation:
Let the number be x
2(5x-6)=18
10x-12=18
10x=30
x=3
Find the value of ‘X’
x =
Applying the, Intersecting Chords Theorem, the value of x is calculated as: x = 16.
How to Apply the Intersecting Chords Theorem?The Intersecting Chords Theorem is a geometric principle that states that when two chords intersect within a circle, the product of the lengths of the segments of one chord is equal to the product of the lengths of the segments of the other chord.
Thus, we would apply this theorem to find the value of x in the image given as explained below:
(x - 6)(8) = (x)(5)
8x - 48 = 5x
8x - 5x = 48
3x = 48
Divide both sides by 3
3x/3 = 48/3
x = 16
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Asx approaches negative infinity, for which of the following functions does f(x) approach positive infinity? Select all that apply. Select all that apply: f(x) =2x5 Ofx)9x +100 f(x)= 6x8 +9x6+32 f(x)=-8x3 + 11 f(x)=-10x +5x+ 26 f(x)=-x +8x4 + 248
Among the provided functions, the ones that approach positive infinity as x approaches negative infinity are:
- f(x) = 2x^5
- f(x) = 6x^8 + 9x^6 + 32
- f(x) = -x + 8x^4 + 248
To determine which functions approach positive infinity as x approaches negative infinity, we need to analyze the leading terms of the functions. The leading term dominates the behavior of the function as x becomes very large or very small.
Let's examine each function and identify their leading terms:
1. f(x) = 2x^5
The leading term is 2x^5, which has a positive coefficient and the highest power of x.
As x approaches negative infinity, this term becomes very large and positive, indicating that f(x) approaches positive infinity.
2. f(x) = 9x + 100
The leading term is 9x, which has a positive coefficient but a lower power of x compared to the constant term 100.
As x approaches negative infinity, the leading term becomes very large and negative, indicating that f(x) approaches negative infinity, not positive infinity.
3. f(x) = 6x^8 + 9x^6 + 32
The leading term is 6x^8, which has a positive coefficient and the highest power of x.
As x approaches negative infinity, this term becomes very large and positive, indicating that f(x) approaches positive infinity.
4. f(x) = -8x^3 + 11
The leading term is -8x^3, which has a negative coefficient and the highest power of x.
As x approaches negative infinity, this term becomes very large and negative, indicating that f(x) approaches negative infinity, not positive infinity.
5. f(x) = -10x + 5x + 26
Combining like terms, we have f(x) = -5x + 26.
The leading term is -5x, which has a negative coefficient but a lower power of x compared to the constant term 26.
As x approaches negative infinity, the leading term becomes very large and positive, indicating that f(x) approaches negative infinity, not positive infinity.
6. f(x) = -x + 8x^4 + 248
The leading term is 8x^4, which has a positive coefficient and the highest power of x.
As x approaches negative infinity, this term becomes very large and positive, indicating that f(x) approaches positive infinity.
Therefore, the correct choices are:
- f(x) = 2x^5
- f(x) = 6x^8 + 9x^6 + 32
- f(x) = -x + 8x^4 + 248
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Which is larger, 52 or 33?
Answer:
52
Step-by-step explanation:
52 is a bigger number than 33?
what’s the answer to this?
Answer:9
Step-by-step explanation:because when we add 7+7+6+6=26 then we will going to 35-26= 9 im not sure so don’t hate me if it was wrong