The point on the parabola y = 7 - x that is closest to the point (7, 7) is (3, 4).
To find the point on the parabola y = 7 - x' that is closest to the point (7,7), we need to find the point on the parabola that has the shortest distance to (7,7).
The distance between two points (x1, y1) and (x2, y2) is given by the distance formula:
d = sqrt((x2 - x1)^2 + (y2 - y1)^2)
In this case, we want to minimize the distance between (7,7) and a point on the parabola, so we set up the distance formula using the variable x' for the x-coordinate of the point on the parabola:
d = sqrt((x' - 7)^2 + (7 - (7 - x'^2))^2)
Simplifying the expression inside the square root, we get:
d = sqrt((x' - 7)^2 + x'^2)
To minimize this expression, we take its derivative with respect to x' and set it equal to zero:
d/dx'(sqrt((x' - 7)^2 + x'^2)) = (x' - 7)/sqrt((x' - 7)^2 + x'^2) + x'/sqrt((x' - 7)^2 + x'^2) = 0
Multiplying both sides by the denominator, we get:
x' - 7 + x' = 0
2x' - 7 = 0
x' = 7/2
So the point on the parabola closest to (7,7) is when x' = 7/2. Plugging this value into the equation for the parabola, we get:
y = 7 - (7/2)^2 = 21/4
Therefore, the point on the parabola y = 7 - x' that is closest to the point (7,7) is (7/2, 21/4).
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Determinar la presión debido al aire de 100 metros por encima del nivel del mar si la presión al nivel de l mal es de 101300 N/m2 la densidad del aire es de 1.23km/m3
The pressure at the height of 100 meter above the sea level is 990 millibars.
What is pressure?The force per unit area in contact is called pressure. Mathematically -
P = dF/dA
Given is to find the pressure due to the air 100 meters above sea level.
We can write the variation of pressure with height as -
\(${\displaystyle P=P_{b}\exp \left[{\frac {-g_{0}M\left(h-h_{b}\right)}{R^{*}T_{b}}}\right]}\)
where -
P{b} = reference pressureT{b} = reference temperature (K)L{b} = temperature lapse rate (K/m) in ISA{h} = height at which pressure is calculated (m)h{b} = height of reference level b (meters; e.g., hb = 11 000 m){R} = universal gas constant: 8.3144598 J/(mol · K)g{0} = gravitational acceleration: 9.80665 m/s2{M} = molar mass of Earth's air: 0.0289644 kg/molNow, we can write the values in the formula as -
\(${\displaystyle P=P_{b}\exp \left[{\frac {-g_{0}M\left(h-h_{b}\right)}{R^{*}T_{b}}}\right]}\)
P = 1013.00 x \($e^{\frac{-9.8\times 0.028\times(100 - 0}{8.31\times288.15 } }\)
P = 990 millibar
Therefore, the pressure at the height of 100 meter above the sea level is 990 millibars.
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{Question in english -
Determine the pressure due to the air 100 meters above sea level if the pressure at sea level is 101300 N/m2 the air density is 1.23 km/m3}
Spongebob and Patrick are selling kelp fries to fundraise for new jellyfishing nets. They sold
small and large sizes. Spongebob sold 3 small fries and 14 large fries for a total of $203.
Patrick sold 11 small fries and 11 large fries for a total of $220. Find the cost of each size of
fries.
a
Answer:
So, cost of small size is $7 and cost of large size is $13.
Step-by-step explanation:
Let cost of each small size - x, cost of each large size - y
By the question,
3x + 14y = 203
11x + 11y = 220
From the first equation, we get,
3x + 14y = 203
or, 3x = 203 - 14y
so, x = (203 - 14y)/3
Substituting x's value in second equation :-
11x + 11y = 220
or, 11 { (203 - 14y)/3 } + 11y = 220
or, {2233 - 154y}/3 + 11y = 220
or, { 2233 -154y + 33y} = 660
or, 2233 - 121y = 660
or, 121y = 2233 - 660
or, 121y = 1573
so, y = 1573/121
so, y = 13
Now,
As we know,
x = (203 - 14y)/3
or, x = ( 203 - 14 × 13)/3
or, x = (203 - 182)/3
so, x = 21/3
so, x = 7
So, cost of small size is $7 and cost of large size is $13.
Find three ratios equivalent to 4/7
If two ratios have the same value when simplified, then they are called Equivalent Ratios.
Equivalent ratios can be obtained by multiplying or dividing both sides by the same non-zero number.
As we want 3 equivalent ration in higher terms we will multiply it
4 : 7
by multiply with 2
4* 2 : 7* 2
8 : 14
by multiply with 3
4* 3 : 7* 3
2 : 21
by multiply with 4
4* 4 : 7* 4
16 : 28
you can multiply with any nonzero number
Hope this helped!
Have a great day!
bottles and water come in packages of five cheese sticks come in packages of 12 what is the least number of packages that you have to buy to have the exact same number of bottles of water and cheese sticks
Answer:
10 water and 4 cheese sticks
Step-by-step explanation:
water
5 10 15 20 25 30 35 40 45 50<--
cheese sticks
12 24 38 50<--
Compute the first‑order partial derivatives of the function. w= 13x/ (x^2+ y^2 +z^2)^3/2
dw/dx= _________
the first-order partial derivative of w with respect to x is:
dw/dx = [13 * (x^2 + y^2 + z^2)^(3/2) - 39x^2] / (x^2 + y^2 + z^2)^3
Determine the partial derivative?To compute the partial derivative dw/dx, we differentiate the function with respect to x while treating y and z as constants.
To compute the first-order partial derivative of the function w = 13x / (x^2 + y^2 + z^2)^(3/2) with respect to x, we differentiate the function with respect to x while treating y and z as constants.
Using the quotient rule and the chain rule, the derivative is calculated as follows:
dw/dx = [13 * (x^2 + y^2 + z^2)^(3/2) - 13x * (3/2) * (2x)] / (x^2 + y^2 + z^2)^3
Simplifying the derivative:
dw/dx = [13 * (x^2 + y^2 + z^2)^(3/2) - 39x^2] / (x^2 + y^2 + z^2)^3
Therefore, the first-order partial derivative of w with respect to x is:
dw/dx = [13 * (x^2 + y^2 + z^2)^(3/2) - 39x^2] / (x^2 + y^2 + z^2)^3
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movie theater has opened.
Number of Tickets
If the trend continues, after how many weeks will the movie theater sell
300 tickets per week?
А. 50
B. 15
C. 12
D. 11
I need a correct answer fast please!!!!
Answer:
I think the possible answer is C.12
hope its right but if its wrong please feel free to correct me.
how do we do this I just forgot please help!
I will pray for you If you do it
Thanks
Answer:
Step-by-step explanation:
=(37 * 45 ) + (63 * 45 )
=1665 + 2835
=4500
Answer:
4720275Step-by-step explanation:
\(\tt 37\times 45\times63\times45\)
\(\tt 1665\times63\times45\)
\(\tt 104895\times 45\)
\(\tt 4720275\)
____________________
Hope this helps you!
Have a great day! :)
PLZZZZZZZZ HLPPPPPPPPP MEEEEEEEEEEEE
Answer:
D.8
Step-by-step explanation:
A cube's volume is basically the side length multiplied by itself 3 times, so if it was increased by a factor of 2, it would mean 2x2x2 which equals 8.
not every linearly independent set in set of real numbers r superscript ℝn is an orthogonal set. T/F?
The given statement is true.
Consider linearly independent vectors of \(R_{n}\)
Where n = 2
\(V = \[\begin{array}{ccc}4&\\2\end{array}\right]\)
\(U = \[\begin{array}{ccc}5&\\6\end{array}\right]\)
Now product of these vectors
UV = 4x5 + 2x6
= 32
Hence these vectors are not orthogonal.
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Which of the following are solutions to the equation below?
CHECK ALL THAT APPLY.
(image attched
The solutions for the equation (5x - 2)² = 10 are x = 3/5 and x = 1/5.
What is an equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign.
Example:
2x + 3 = 7 is an equation.
We have,
(5x - 2)² = 10
25x² - 20x + 4 = 10
25x² - 20x + 4 - 10 = 0
25x² - 20x - 6 = 0
Now,
Solve for x.
25x² - 20x - 6 = 0
This is in the form of ax² + bx + c
So,
a = 25
b = -20
c = -6
Using the determinant.
x = -b ± √(b² - 4ac) / 2a
x = 20 ± √(400 + 600) / 50
x = 20 ± √(100) / 50
x = (20 ± 10) / 50
x = 10 (2 ± 1) / 50
x = (2 ± 1)/5
x = (2 + 1)/5 and x = (2 - 1)/5
x = 3/5 and x = 1/5
Thus,
The solutions are x = 3/5 and x = 1/5.
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someone help please!
what is 0.1 rounded to 2 decimal places
Answer:
0.10
Step-by-step explanation:
0.1 is already rounded to one decimal place, so just add a zero at the end, that usually pleases teachers
Rounded Value of 0.1 to one decimal is 0.1.
What is rounded to 2 decimal value?Rounding a decimal number to two decimal places is the same as rounding it to the hundredths place, which is the second place to the right of the decimal point. For example, 2.83620364 can be round to two decimal places as 2.84, and 0.7035 can be round to two decimal places as 0.70.
Given value = 0.1
We can see that 0.1 already a one decimal place number.
Steps to round off number to two decimal places:
1 . Locate the Third Digit after the Decimal Point. Here it is, 0 in 0.1
2. If the located digit is 5 or more, increase the previous digit by one and remove all digits to right
3. If the located digit is 4 or less, keep the previous digit the same and remove all digits to right
4 . Here it is, 0.1 as the located digit is 0
Rounded Value of 0.1 to one decimal is 0.1.
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George bought a model of a Viking ship for $68. If he paid
$5.10 in sales tax, what was the sales tax rate?
Answer:
We can convert 6.75% to a decimal by dividing by 100.
If x is the price of the house, then the sales tax is 0.0675x. The price of the house and the sales tax add up to $319,000.
x+0.0675x=319,000
Combe terms on the left.
1.0675x=319,000
Finally, divide both sides by 1.0675.
x=319,0001.0675=298,829.04
I need help with this please
The HCF and LCM of two numbers are 12 and 72 respectively. If one number is 24, find the other number.
Answer:
We have with us that: The HCF and LCM of two numbers are 12 and 72 respectively. We also have with us that: sum of the two numbers is 60. So, either x=24 or x=36. If x=24, then y=36 and if x=36, then y=24.
Answer: 36
Step-by-step explanation:
Let say n the second number
Since HCF*LCM=12*72= 24*n
n=(12*72)/24
n=72/2
n=36
Marrisa sold a total of 18,200 worth of clothing last week at her store.If her commision is 4% of sales,how much commisssion did she earn?
Answer:
She would earn 728 $ in commission
Step-by-step explanation:
i need help with this asap please!!!
Answer:
54°
Step-by-step explanation:
m and the 54° angle are VERTICAL ANGLES. That means they are the same measure.
Answer:
Step-by-step explanation:
54 degree
4x + 13 = -X-7
O No Solutions
O All Real Numbers
O x = 4
O x = -4
Please help it’s a test and I’m very confused
Ridgewood Savings Bank charges a $27 per check overdraft protection fee. On July 8, Nancy had $1,400 in her account. Over the next 4 days, the following checks arrived for payment at her bank: July 9, $1,380.15; July 10, $670 and $95.67; July 11, $130; and July 12, $87.60.
How much will she owe the bank after July 12?
If Ridgewood Savings Bank charges a $27 per check overdraft protection fee. The amount she will owe the bank after July 12 is: $1,071.42.
What is total obligation?Total obligation can be defined as the amount a person owe another person or the debt amount a borrower is expected to payback to a lender.
Balance $1,400
July 9 check ($1,380.15)
Balance $19.85
July 10 check ($765.67)
($670 + $95.67)
Balance -$745.82 (Overdraft)
Now let find the amount she owe
Balance -$745.82
July 11 check $130
Balance -$875.82
July 12 check $87.60
Ending balance -$963.42
Overdraft fee $108
($27 ×4)
Total obligation -$1,071.42
Therefore her total obligation is $1,071.42.
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The circumference would , 1 of 2. select choice . for example, a circle with a radius of 3 feet would have a circumference that is about 18 feet. when the radius doubles to 6 feet, the circumference is about , 2 of 2. select choice feet.
The circumference of the circle with a radius of 6 feet would be approximately 37.7 feet.
The circumference of a circle is the distance around the outer edge of the circle. It is the perimeter of the circle, which is the total length of the boundary that encloses the area of the circle.
The formula for the circumference of a circle is
C = 2πr
Where C is the circumference, r is the radius, and π is approximately 3.14.
If a circle has a radius of 3 feet, the circumference would be
C = 2πr
C = 2π(3)
C ≈ 18.85 feet
When the radius doubles to 6 feet, the circumference would be
C = 2πr
C = 2π(6)
C ≈ 37.7 feet
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Answer:
double, and 36
Step-by-step explanation:
Mc graw hill
Q...
a semiconductor product consists of three layers. suppose that the variances in thickness of the first, second, and third layers are 25, 40, and 30 nanometers, respectively, and the layer thicknesses are independent. what is the standard deviation of the thickness of the final product? answer to two digits after decimal place.
The standard deviation of the thickness of layer 1 = 15.81 x 10⁻⁵ m
layer 2 = 20 x 10⁻⁵m
layer 3 = 17.32 x 10⁻⁵ m
The variance of the thickness of the three layers is 25,40 and 30 in nanometers
Let v₁, v₂, v₃ be the variance of the three layers of thickness.
Then, the standard deviation of the thickness of these layers can be found using the formula
v = σ²
Let us re-write this equation in order to find the standard deviation,
σ = √v
where v is the variance and
σ is the standard deviation
The standard deviation of layer 1 is
σ₁ = √v₁
= √(25 x 10⁻⁹)
= √(250 x 10⁻¹⁰)
= 15.81 x 10⁻⁵
The standard deviation of layer 2 is
σ₂ = √v₂
= √(40 x 10⁻⁹)
= √(400 x 10⁻¹⁰)
= 20 x 10⁻⁵
The standard deviation of layer 3 is
σ₃ = √v₃
= √(30 x 10⁻⁹)
= √(300 x 10⁻¹⁰)
= 17.32 x 10⁻⁵
Therefore, the standard deviation is 15.81 x 10⁻⁵m , 20 x 10⁻⁵ m, 17.32 x 10⁻⁵m
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Determine if figure EFGHIJ is similar to figure KLMNPQ.
A.
Figure EFGHIJ is not similar to figure KLMNPQ because geometric stretch (x,y) to (2x,1.5y) maps figure EFGHIJ to figure KLMNPQ.
B.
Figure EFGHIJ is similar to figure KLMNPQ because dilation (x,y) to (1.5x,1.5y) maps figure EFGHIJ to figure KLMNPQ.
C.
Figure EFGHIJ is not similar to figure KLMNPQ because geometric stretch (x,y) to (1.5x,2y) maps figure EFGHIJ to figure KLMNPQ.
D.
Figure EFGHIJ is similar to figure KLMNPQ because dilation (x,y) to (2x,2y) maps figure EFGHIJ to figure KLMNPQ.
The correct statement regarding the similarity of the figures is given as follows:
B. Figure EFGHIJ is similar to figure KLMNPQ because dilation (x,y) to (1.5x,1.5y) maps figure EFGHIJ to figure KLMNPQ.
What is a dilation?A dilation is defined as a non-rigid transformation that multiplies the distances between every point in a polygon or even a function graph, called the center of dilation, by a constant factor called the scale factor.
After a dilation, we have that:
The figures are similar, as the angle measures remain constant.The figures are not congruent, as the side lengths are changed.The scale factor is given as follows:
k = 1.5.
As each coordinate of each vertex is multiplied by 1.5.
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i need help with this i dont understand at all. find the 1st, 2nd, 3rd, 4th and 10th nTh term rule is n+5
The rule is n + 5
So we have that
an = n + 5
Where n is the term, that said we want the 1st, 2nd, 3rd, 4th and 10th term
a1 = 1 + 5 = 6
a2 = 2 + 5 = 7
a3 = 3 + 5 = 8
a4 = 4 + 5 = 9
a10 = 10 + 5 = 15
The next four digits in the number 0.3435363738394041 are
So the next 4 digits are:
0.42430.34353637383940414243
2. The zeros of the polynomial f(x) = (x -- 4)(x+2)(x+3) are
What is the y=mx+b of this?
La media de una población es 683.5g y su desviación estándar 52.1g. Determina la puntuación estándar para el valor 652.1
Respuesta:
- 0,60
Explicación paso a paso:
Dado que:
Media poblacional, μ = 683,5
Desviación estándar, σ = 52,1
Puntuación, x = 652,1
La puntuación estandarizada, Z = (x - μ) / σ
Puntuación Z = (652,1 - 683,5) / 52,1
Puntuación Z = - 31,4 / 52,1
Zscore = −0.602687
Puntaje estandarizado = - 0.60
Simplify this exponential expression:
(-49) 2/5
Answer:
I think it is 12 4/5
Step-by-step explanation:
hope this helps if not let me now
An electric toothbrush costs $69, including a 50% price markup. What was the cost for the store to purchase the electric toothbrush?
$19.00
$23.00
$34.50
$46.00
If the $69 cost of electric-toothbrush includes 50% "price-markup", then the cost for the store to purchase it was (d) $46.
Let the cost for the store to purchase the electric toothbrush be = "C".
We know that the "final-price" of the toothbrush, includes the 50% markup, which is = $69,
The price with the 50% markup is calculated by adding 50% of the original cost to the original cost.
So, we have :
⇒ Final price = Original cost + 50% of original cost,
Substituting the value of "final-price" as $69,
We get,
⇒ $69 = C + 0.5C,
⇒ $69 = 1.5C,
⇒ C = $46;
Therefore, the correct option is (d).
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The given question is incomplete, the complete question is
An electric toothbrush costs $69, including a 50% price markup. What was the cost for the store to purchase the electric toothbrush?
(a) $19.00
(b) $23.00
(c) $34.50
(d) $46.00
These tables of values represent continuous functions. In which table do the
values represent an exponential function?
A
X
1
2.
3
4
5
y
4
12
36
108
324 B X 1
2
3
4
5
у
9
10
11
12
13. C
X
1
2
3
4
5 7 28
49
70
91
D X 1 2 3
4
5 y 4
12
20
28. 36. Yo
Answer: Could you possibly make the question telligible via photo or better tables? I'd love to help if you would!
Step-by-step explanation: