Answer:
x+2y=-3
x+2(-1)=-3
x-2=-3
x=-3+2
x=-1
Calcule o valor numérico da expressão [(18+3•2)+8+5•3]+6
Step-by-step explanation:
priorities of operations :
1. brackets
2. exponents
3. multiplications and divisions
4. additions and subtractions
[(18 + 3×2) + 8 + 5×3] + 6
18 + 3×2 = 18 + 6 = 24
24 + 8 + 5×3 = 24 + 8 + 15 = 47
47 + 6 = 53
[(18 + 3×2) + 8 + 5×3] + 6 =
= 18 + 6 + 8 + 15 + 6 = 53
A local hamburger shop sold a combined total of 817 hamburgers and cheeseburgers on Friday. There were 67 more cheeseburgers sold than hamburgers. How
many hamburgers were sold on Friday?
hamburgers
The number of hamburgers sold on Friday was 442.
Let us form the linear equation to find the number of burgers;
Let the cheeseburger be represented by x.
Since there were 67 more cheeseburgers sold than hamburgers. This means that hamburgers will be:
The number of hamburgers = x + 67.
Since the local hamburger shop sold a combined total of 817 hamburgers and cheeseburgers. This will be:
x + x + 67 = 817
2x + 67= 817
2x = 817 - 67
2x = 750
x = 750 / 2
x = 375
So, 375 cheeseburgers were sold on Friday.
Therefore, the number of hamburgers sold will be:
= 817 - 375
= 442
Thus, the number of hamburgers sold on Friday was 442.
To learn more about the linear equation visit:
https://brainly.com/question/13738061
#SPJ9
Write with a single exponent
b. 1/10•1/10•1/10•1/10•1/10•1/10•1/10=
Answer:
1 x 10^-7
Step-by-step explanation:
Answer:
l;komjni
Step-by-step explanation:
Find x:
(Round the answer to the nearest tenth if there is a decimal)
Answer:Angle x is congruent with the interior angle opposite side 8 (alternate interior angles)
Use tangent:
tan x = 8/15
x = arctan (8/15)
x = 28.1° (rounded)
Step-by-step explanation:
Find the value of b.
Image is below please explain and give correct answer !!
The value of b is degree 104.we can find by using vertically opposite theorem.
What is vertically opposite in maths?Vertical Angles are when two lines intersect each other then the opposite angles formed due to intersection are called vertical angles or vertically opposite angles. A pair of vertically opposite angles are always equal to each other.The point where they meet is called a vertex.
How do we identify opposite angles?Vertical opposite angles that are opposite each other when two lines cross are also known as vertical angles because the two angles share the same corner. Opposite angles are also congruent angles meaning they are equal or have the same measurement.
Now we have
(b-308)=(-2b+4)
b+2b=4+308
3b=312
b=104
Hence the value of b is 104 degree.
To learn more about vertical opposite angle visit;
https://brainly.com/question/18045519
#SPJ1
seven people were chosen from a pool of 21 people tested that resulted in an outcome of 33%. this is an example of a ratio. break-even selection furlough retention turnover
It is important to note that the term "break-even," "selection," "furlough," "retention," or "turnover" does not directly apply to this scenario.
The given scenario, where seven people were chosen from a pool of 21 people and resulted in an outcome of 33%, is an example of a ratio.
In this case, the ratio is calculated as the number of chosen individuals (7) divided by the total number of individuals in the pool (21), resulting in a ratio of 7/21 or 1/3. This ratio represents the proportion or percentage of the pool that was selected.
Know more about proportion here:
https://brainly.com/question/31548894
#SPJ11
can anyone help me solve this equation?
Answer:
Step-by-step explanation:
y=-3/5x+3, (2,-4)
-4=-3/5(2)+b
b=-14/5
y=-3/5x-14/5
HELPpppp WITH 6 & 7 pleaseeeeee
number 7 is 21 people
Step-by-step explanation:
for number 7 I got 21 because if 6 pounds feeds 14 people then if you divide both by 2 then you will get 3 pounds feed 7 people and to find 9 pounds its 7×3 which is 21.
An engineer determines that the angle of elevation from her position to the top of a tower is 52°. She measures the angle of elevation again from a point 47 meters farther away from the tower and
finds it to be 31°. Both positions are due east of the town. Find the height of the tower
pls help
Answer:
Step-by-step explanation:
The question is illustrated with the attached image.
Angle of elevation is the angle between a line of sight and the horizontal surface.
Let h be the height of the tower
First, calculate distance BC (x).
This is calculated using the following tan ratio,
tan52=h/x
h=xtan52
From the attached image:,
CD=47+x
tan31=h/x+47
h=(x+47)tan31
xtan52=(x+47)tan31,
solving for x we get, x=41.156m
h=xtan52=41.156 * tan52=53.2m
A triangle has two sides of length 19.3 and 9.7. What compound inequality describes the possible lengths for the third side, x?
Answer:
thank you po
Step-by-step explanation:
kailagan lng ng point
The table represents a linear function
What is the slope of the function?
-3
-2
3
4
Answer:
3
Step-by-step explanation:
.......................
Answer:
3
Step-by-step explanation:
The formula of to calculate slope of a linear function is
\(m=\frac{y_2-y_1}{x_2-x_1}\)
where m is the slope and so lets take any two points from the table to calculate the slope. Lets take,
(0 , 4) and (1 , 7) and lets plug it in the formula
\(m=\frac{y_2-y_1}{x_2-x_1}\\\\m=\frac{7-4}{1-0}\\\\m=3\)
So the slope of the function is 3
9) A rectangular bookshelf has a length of
of 8 1/3in and width of 4 3/8 in. Calcutate its
area
Answer:225/8 in square
Step-by-step explanation:
No
Can some one really help me!
Answer:
That's not what I'm learning sorry
Step-by-step explanation:
Answer:
82 units
Step-by-step explanation:
There are multiple ways to go about solving this problem (solving by calculating the areas of the individual, smaller shapes), but I recommend solving it by first calculating the area of the entire figure (96 units - 12 * 8 - length * width ((formula for the area of a rectangle)) and then subtracting the area of the missing part from this value.Assume the opposite sides are equal in value (see picture for work) and subtract the given values (4 and 5) from 8 and 12 to get the measurements to find the triangle (the missing part).You get 7 and 4 and now you use the formula for the area of a triangle to get the area. (7*4)/2, which gives you 14 units.Subtract 14 (area of missing value) from 96 (area of total value) to get your final answer, 82 units!The function is defined by f(x)=x2e−x2 . At what values of does have a relative maximum?A ) -2B) 0C 1onlyD -1 and 1
The function f(x) = \(x^2 e^{(-x^2)}\) has a maximum value at x = 0, which is a relative maximum point.
To find the relative maximum of the function f(x) =\(x^2 e^{(-x^2)}\), we can take its first derivative, set it to zero, and solve for x.
f(x) = \(x^2 e^{(-x^2)}\)
f'(x) = \(2x e^{(-x^2)} - 2x^3 e^{(-x^2)}\)
Setting f'(x) = 0, we get:
\(2x e^{(-x^2)} - 2x^3 e^{(-x^2)} = 0\)
\(2x e^{(-x^2)} (1 - x^2) = 0\)
This equation is true when either \(2x e^{(-x^2)} = 0\) or \(1 - x^2 = 0\).
Solving \(2x e^{(-x^2)} = 0\), we get x = 0.
Solving \(1 - x^2 = 0\), we get x = 1 or x = -1.
Now, we need to determine whether these values of x correspond to relative maximum, minimum, or inflection points.
To do this, we can use the second derivative test. The second derivative of f(x) is:
f''(x) = \(2e^{(-x^2)} - 4xe^{(-x^2)} - 4x^2e^{(-x^2)}\)
At x = 0, f''(0) = 2, which is positive. This means that f(x) has a relative minimum at x = 0.
At x = 1, f''(1) = \(-6e^{(-1)}\), which is negative. This means that f(x) has a relative maximum at x = 1.
At x = -1, f''(-1) = \(-6e^{(-1)}\), which is negative. This means that f(x) has a relative maximum at x = -1.
Therefore, the answer is (D) -1 and 1 only, as these are the only values of x at which f(x) has a relative maximum.
Learn more about equation here:
https://brainly.com/question/12788590
#SPJ4
what is the fourth step of the risk assessment process? a. determine probability b. estimate severity c. determine current level of preparedness/mitigation d. identify hazards
The fourth step of the risk assessment process is to determine current level of preparedness/mitigation.
The correct option is C.
What exactly is the risk assessment process?A risk assessment is a procedure for identifying potential dangers and analyzing what might happen if one happens. A business impact analysis (BIA) is a procedure that determines the probable consequences of interrupting time-sensitive or important business processes. There are various potential hazards to be mindful of.
What exactly is the goal of risk assessment?The ultimate goal of risk assessments is to improve workplace safety and health. However, to order to accomplish this, your risk assessment process must identify occupational hazards and eliminate or reduce the risks they represent.
To know more about risk assessments visit:
https://brainly.com/question/14804333
#SPJ4
if 10 30 90 ⋯=2657200, what is the finite sum equation? include values for 1, , and .
The sum of the first 8 terms of the sequence is 640. The values for 1, n, and d are 10, 8, and 20, respectively.
The given sequence is an arithmetic sequence with a common difference of 20. Using the formula for the sum of n terms of an arithmetic sequence, we can find the value of n.
Let S_n be the sum of the first n terms of the sequence. Then,
S_n = n/2(2a + (n-1)d)
where a is the first term, d is the common difference.
From the given sequence, we know that a = 10 and d = 20. We need to find the value of n such that S_n = 2657200.
2657200 = n/2(2(10) + (n-1)(20))
2657200 = n/2(20n - 10)
5314400 = n(20n - 10)
1062880 = n(10n - 5)
1062880 = 5n(2n - 1)
By trial and error, we can find that n = 8 is a solution.
Thus, the finite sum equation is:
S_8 = 8/2(2(10) + (8-1)(20))
S_8 = 4(20 + 7*20)
S_8 = 4(160)
S_8 = 640
Therefore, the sum of the first 8 terms of the sequence is 640. The values for 1, n, and d are 10, 8, and 20, respectively.
To know more about sum refer here:
https://brainly.com/question/12399484
#SPJ11
What will be the coordinates of vertex A' of the image?
O (-8,-4)
O (2,-1)
O (0, 0)
O (1,0)
Answer:
Correct answer below
Step-by-step explanation:
Answer: D: (1, 0)
Step-by-step explanation: thank u for the answer !!
5.6 dividido en 18.8
Answer:
3.357
Step-by-step explanation:
18.8 / 5.6 = 3.357
Plaque builds up on the walls of an artery decreasing its diameter from 1.16 cm to 0.70 cm. If the flow speed is 15.0 cm/sbefore reaching the region of plaque buildup, determine the following.
(a) speed at which blood is traveling through the plaque-constricted region
cm/s
(b) pressure change within the plaque-constricted region. (Assume the density of blood is 1050 kg/m3. Be sure to include the appropriate sign with your answer.)
Pa
A. The speed at which blood is travelling through the plaque-constricted region is approximately 31.62 cm/s. and B. P2 - P1 ≈ -405,431.58 kg/\((m*s^2)\) = -405,431.58 Pa (approximately).
(a) To determine the speed at which blood is travelling through the plaque-constricted region, we can apply the principle of continuity, which states that the flow rate of an incompressible fluid remains constant in a closed system.
The flow rate (Q) is given by the product of the cross-sectional area (A) and the velocity (v): Q = A * v.
Since the flow rate remains constant, we can write:
Q1 = Q2
A1 * v1 = A2 * v2
The cross-sectional area of the artery can be approximated as A = π * \(r^2\), where r is the radius of the artery.
Given that the diameter decreases from 1.16 cm to 0.70 cm, the initial radius (r1) is 0.58 cm (0.58 cm = 1.16 cm / 2) and the final radius (r2) is 0.35 cm (0.35 cm = 0.70 cm / 2).
Using these values, we can find the ratio of the cross-sectional areas:
A1/A2 = (π * \(r1^2\)) / (π * \(r2^2\)) =\((r1^2) / (r2^2).\)
Substituting the given values:
A1/A2 = \((0.58 cm)^2 / (0.35 cm)^2\) ≈ 2.108.
Since the cross-sectional areas are inversely proportional to the velocities, we have:
v2 = (A1/A2) * v1 = 2.108 * 15.0 cm/s ≈ 31.62 cm/s.
Therefore, the speed at which blood is traveling through the plaque-constricted region is approximately 31.62 cm/s.
(b) To determine the pressure change within the plaque-constricted region, we can use Bernoulli's equation, which relates the pressure, velocity, and height of a fluid in a flowing system.
Bernoulli's equation is given by:
P1 + (1/2) * ρ * \(v1^2\) + ρ * g * h1 = P2 + (1/2) * ρ * \(v2^2\) + ρ * g * h2.
Where P1 and P2 are the pressures, v1 and v2 are the velocities, ρ is the density of blood, g is the acceleration due to gravity, h1 is the initial height, and h2 is the final height.
In this case, we can assume that the height remains constant, so the terms ρ * g * h1 and ρ * g * h2 cancel out.
Since we are interested in the pressure change, we can rewrite Bernoulli's equation as:
P2 - P1 = (1/2) * ρ * \((v1^2 - v2^2).\)
Substituting the given values:
\(P2 - P1 = (1/2) * 1050 kg/m^3 * [(15.0 cm/s)^2 - (31.62 cm/s)^2].\\P2 - P1 = (1/2) * 1050 kg/m^3 * [225 cm^2/s^2 - 1000.2244 cm^2/s^2].\)
\(P2 - P1 ≈ (1/2) * 1050 kg/m^3 * (-775.2244 cm^2/s^2).\\P2 - P1 ≈ -405,431.58 kg/(m*s^2) = -405,431.58 Pa (approximately).\)
To learn more about speed from the given link
https://brainly.com/question/553636
#SPJ4
PLEASE HELP!!!
Solve for X...
Cos30=x/8
Answer MUST be in radical form. NO DECIMALS.
cos(30)=x/8
Rewrite the equation as
x/8=cos(30)
Multiply both sides of the equation by
8
.
8
⋅
x/8=8⋅cos(30)
Simplify both sides of the equation.
Tap for more steps...
x=4√3
The result can be shown in multiple forms.
Exact Form:
x=4√3
Decimal Form:
x=6.9282032
PLEASE HELP ME!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!
Equations and inequalities fall under the umbrella of algebra. Algebra is the category of math where letters, like x and y, are used to represent numbers. These letters are called variables, and the goal of equations and inequalities is to find the value of the variable. An equation is a statement that two expressions or values are equal, shown by an equal sign, which looks like this: =. An inequality is a statement that two expressions or values are not equal, shown by an inequality sign. The four inequality signs look like this: > (“greater than”), 437
A= y - 78
B x = 46 + y
C= 4x + 5 = 950
D= 2b - 17 > 437
Answer:
b
Step-by-step explanation:
Answer:
the answer is D.
Step-by-step explanation:
Make x the subject of the formula.
y = √x² +1
Answer: x = \(\sqrt{y^2 -1}\)
Step-by-step explanation:
Evaluate -32(-2)^6/16(-2)^3
Answer:
1024
Step-by-step explanation:
Answer:
-78848
Step-by-step explanation:
50 points
The frequency table below shows the length of selected movies shown in a local
theater over the past six months.
Answer:
Lol its in total of 34
Step-by-step explanation:
Over the circle x^2 + y^2 < r^2 random variables X and Y have a uniform PDF
f X,Y(x,y) = 1/(Pi r^2) , x^2 + y^2 < r^2
0 otherwise
b) what is marginal PDF fx(x)?
c) what is marginal PDF fy(y)?
b)The marginal PDF fx(x) is given by: fx(x) = (\(2\sqrt{(r^2 - x^2))/(\pi r^2}\)), for -r < x <r
c) the marginal PDF fy(y) is given by: fy(y) = (\(2\sqrt{(r^2 - y^2))/(\pi r^2}\)), for -r < y < r
To find the marginal probability density functions (PDFs) fx(x) and fy(y) from the joint PDF fX,Y(x, y), we need to integrate the joint PDF over the appropriate range.
b) To find the marginal PDF fx(x), we integrate fX,Y(x, y) with respect to y while considering the range of x:
fx(x) = ∫fX,Y(x, y) dy
Since the joint PDF is defined over the circle \(x^2 + y^2 < r^2\), the integration limits for y will be -\(\sqrt{r^2 - x^2)}\) to \(\sqrt{r^2 - x^2)}\)
fx(x) = ∫\([-\sqrt{(r^2 - x^2)}\), \(\sqrt{(r^2 - x^2}\))] (1/(πr^2)) dy
Integrating, we get:
fx(x) = (\(1/(\pi r^2)\)) * 2\(\sqrt{(r^2 - x^2}\)
Therefore, the marginal PDF fx(x) is given by:
fx(x) = (2\(\sqrt{(r^2 - x^2}\)/(\(\pi r^2\)), for -r < x < r
c) Similarly, to find the marginal PDF fy(y), we integrate fX,Y(x, y) with respect to x while considering the range of y:
fy(y) = ∫fX,Y(x, y) dx
Since the joint PDF is defined over the circle\(x^2 + y^2 < r^2\), the integration limits for x will be -\(\sqrt{r^2 - y^2}\)) to \(\sqrt{(r^2 - y^2}\)).
fy(y) = ∫[-\(\sqrt{r^2 - y^2}\), √\(\sqrt{r^2 - y^2}\)] (\(1/(\pi r^2\))) dx
Integrating, we get:
fy(y) = (1/\((\pi r^2\))) * 2\(\sqrt{r^2 - y^2}\))
Therefore, the marginal PDF fy(y) is given by:
fy(y) = \(2\sqrt{(r^2 - y^2))/(\pi r^2}\) for -r < y < r
For more such questions on marginal PDF visit:
https://brainly.com/question/30196350
#SPJ11
Find the equations of the lines for the following. Your answer should be in the form y=mx+b.
Find the slope (m) and the y-intercept (0,b) in order to complete each problem.
1. The line goes through the point (1, 1) and has a slope of 2.
2. The line goes through the points (-2,6) and (2,4)
Answer:
1 ) y = 2x - 1
slope = 2
y intercept is (0,-1)
2) y = -1/2x + 5
slope = -0.5
y intercept = (0,5)
Step-by-step explanation:
shaunta is developing a recursive formula to represent an arithmetic sequence in which 5 is added to each term to determine each successive term. which formula could represent her sequence? f(n 1)
The recursive formula f(n+1) = f(n) + 5, you can find any term in the sequence by starting with the initial term and adding 5 repeatedly.
To represent the given arithmetic sequence where 5 is added to each term to determine each successive term, the recursive formula can be expressed as: f(n+1) = f(n) + 5
In this formula, f(n+1) represents the next term in the sequence, while f(n) represents the current term. By adding 5 to each term, we can generate the next term in the sequence.
For example, let's assume the first term of the sequence is f(1) = a. Then, the second term would be f(2) = a + 5. The third term would be f(3) = (a + 5) + 5 = a + 10, and so on.
By using the recursive formula f(n+1) = f(n) + 5, you can find any term in the sequence by starting with the initial term and adding 5 repeatedly.
Learn more about arithmetic sequence here:
https://brainly.com/question/28882428
#SPJ11
Find the center of the circle and the radius by completing the square. x2+y2−4y−8x+3=0
The radius of the circle is √17.
The center of the circle is (4, 2).
What is a circle?A circle is a two-dimensional figure with a radius and circumference of 2πr.
The area of a circle is πr².
We have,
The equation of a circle with radius r and center (h, k) is
(x - h)² + (y - k)² = r²
Now,
x² + y² - 4 y - 8x + 3 = 0
x² - 8x + y² - 4y + 3 = 0
x² - 8x + 4² - 4² + y² - 4y + 2² - 2² + 3 = 0
(x - 4)² + (y - 2)² - 16 - 4 + 3 = 0
(x - 4)² + (y - 2)² = 16 + 4 - 3
(x - 4)² + (y - 2)² = √17
This means,
radius = √17 and center = (4, 2)
Thus,
The radius and center of the circle are √17 and (4, 2).
Learn more about circle here:
https://brainly.com/question/11833983
#SPJ9
Solve for x
\(\frac{x}{6}\) + \(\frac{x}{4}\) = 2
Give your answer in its simplest form.
The _____ maintains that MV = PY, where M is the money supply, V is the income velocity of money, P is the price level, Y is real output, and no additional assumptions about the variables are made.
Group of answer choices
(static) equation of exchange
dynamic equation of exchange
(static) quantity theory of money
dynamic quantity theory of money
The quantity theory of money is an economic theory that suggests a direct relationship between the money supply (M) and the price level (P) in an economy
According to this theory, the equation MV = PY holds, where V represents the income velocity of money and Y represents real output. This equation states that the total value of money spent in an economy (MV) is equal to the total value of goods and services produced (PY).
The quantity theory of money assumes that the velocity of money (V) and real output (Y) are relatively stable over time and that changes in the money supply (M) primarily affect changes in the price level (P). It implies that an increase in the money supply will lead to inflation, as there is more money chasing the same amount of goods and services.
Therefore, the correct answer is "static quantity theory of money," which refers to the idea that the relationship between money, velocity, price level, and real output is static and can be represented by the equation MV = PY.
Learn more about equation here:
https://brainly.com/question/29538993
#SPJ11