Answer:
Option C (207.5 feet)
Step-by-step explanation:
The questions which involve calculating the angles and the sides of a triangle either require the sine rule or the cosine rule. In this question, the two sides that are given are adjacent to each other the given angle is the included angle. This means that the angle is formed by the intersection of the lines. Therefore, cosine rule will be used to calculate the length of b. The cosine rule is:
x^2 = y^2 + z^2 - 2*y*z*cos(X).
Let x be the distance covered by the outfielder's throw, let y be the distance between the pitcher's mound and the home plate, let z be the distance covered by the batter's shot, and let X be the mentioned angle.
The question specifies that y=60.5 feet, X=31°, and z=257 feet. Plugging in the values:
x^2 = 60.5^2 + 257^2 - 2(60.5)(257)*cos(31°).
Simplifying gives:
x^2 = 43053.9184501 feet.
Taking square root on the both sides gives x = 207.5 feet (rounded to the one decimal place).
This means that the Option C is the correct choice!!!
solve for x 3x^ - 4 = 8
Answer:
1/8
Step-by-step explanation:
i added and combined like terms and got 1/8
Answer: [tex]x[/tex] ≈ [tex]\±0.782[/tex]
Step-by-step explanation:
You need to solve for "x" in order to find its value.
First, you need to apply the Negative exponent rule. This is:
[tex]a^{-n}=\frac{1}{a^n}[/tex]
Then:
[tex]3x^{- 4}= 8[/tex]
[tex]\frac{3}{x^4}=8[/tex]
Now you can solve for "x":
[tex]3=8x^4[/tex]
[tex]\frac{3}{8}=x^4[/tex]
Remember that:
[tex]\±\sqrt[n]{a^n}=\±a[/tex]
Then, you get:
[tex]\±\sqrt[4]{\frac{3}{8}}=x[/tex]
[tex]x[/tex] ≈ [tex]\±0.782[/tex]
The rule as a mapping for the translation of a rectangle is (x, y) → (x – 2, y + 7). Which describes this translation?
Answer:
The answer is a translation of 2 units to the left and 7 units up
Step-by-step explanation:
we know that
In the rule for the translation of a rectangle
(x, y) → (x – 2, y + 7).
the term (x-2) means a translation of 2 units to the left
the term (y+7) means a translation of 7 units up
Therefore,
The answer is a translation of 2 units to the left and 7 units up....
For the function G defined by G(x)=5x+3, find G(2b).
[tex]g(2b)=5\cdot2b+3=10b+3[/tex]
The value of G(2b) = 10b + 3.
How does function work in maths?A function is defined as a relation between a set of inputs having one output each. A function is a relationship between inputs where each input is related to exactly one output. Every function has a domain and codomain or range.Given:
G(x) = 5x+3
To find:
the value of G(2b).
For G = 5x + 3
substitute x with 2b [tex]$=5 \cdot 2 b+3$[/tex]
Simplifying the above equation, we get
[tex]$5 \cdot 2 b+3: \quad 10 b+3$[/tex]
G(2b) = 10b + 3
Therefore, the value of G(2b) = 10b + 3.
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In May you used 600 kilowatt-hours of energy for electricity. Calculate your average power use in watts.
Answer:
The average power use is 806 watts....
Step-by-step explanation:
We all know that there are 31 days in May.
To find the total number of hours in 31 days, multiply the hours of one day by 31.
31*24 = 744 hours
Now we have given 600.kilowatt
To find average power, simply divide the given kilowatt by the total number of hours in 31 days.
= 600/744
Average power = 0.806 kilowatt
Since they have asked for the answer in watts we will convert kilowatt into watts.
We know that 1000 watts = 1 kilowatt, so we will multiply 0.806 by 1000 to convert it into watts
= 0.806*1000
= 806 watts.
Therefore the average power use is 806 watts....
Write the slope-intercept form of the equation that passes through the point (-3, 5) and is perpendicular to the line y = 1/5x + 10 y = 5x + 10 y = -1/5x + 22/5 y = 1/5x + 28/5 y = -5x - 10
Answer:
y = -5x - 10Step-by-step explanation:
[tex]\text{Let}\\\\k:y=m_1x+b_1\\\\l:y=m_2x+b_2\\\\l\ \perp\ k\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}\\\\l\ \parallel\ k\iff m_1=m_2\\\\=========================[/tex]
[tex]\text{We have}\ y=\dfrac{1}{5}x+10\to m_1=\dfrac{1}{5}\\\\\text{Therefore}\ m_2=-\dfrac{1}{\frac{1}{5}}=-5.\\\\\text{Put the value of a slope and the coordinates of the point (-3, 5)}\\\text{to the equation}\ y=mx+b:\\\\5=-5(-3)+b\\5=15+b\qquad\text{subtract 15 from both sides}\\-10=b\to b=-10\\\\\text{Finally:}\\\\y=-5x-10[/tex]
What is the length of the side opposite
3 units
4 units
5 units
6 units
0
Answer:
A. 4 units
Step-by-step explanation:
Answer: B: 4 units
Step-by-step explanation:
the guy above me almost got it, lol, love u
You like a diamond ring. The diamond is cut into a cone shape. The diameter of the diamond is 4 millimeters. The slant height is 2.5 millimeters. Find the surface area of the diamond.
Answer:
28.27 mm squares.
Step-by-step explanation:
Total Surface area of the cone is given by the circular base and the curved part of the cone. This means that there are a total of 2 parts of the shape. The following 2 expressions have to be added in order to gain the total surface area:
1) Surface Area of Cone (without base) = π*r*s.
2) Area of Circle = π*r^2.
It is given that r = 2 mm and s = 2.5 mm. Plugging in the values gives:
Total Surface Area of the Diamond Ring = π*2*2.5 + π*2^2.
Total Surface Area of the Diamond Ring = 5π + 4π = 9π = 28.27 mm squares.
This means that the total surface area is 28.27 mm square (correct to 2 decimal places)!!!
Help please! I need answers quickly :((
Answer:
y = - [tex]\frac{1}{2}[/tex] x + 2
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (0, 2) and (x₂, y₂ ) = (4, 0) ← 2 points on the line
m = [tex]\frac{0-2}{4-0}[/tex] = [tex]\frac{-2}{4}[/tex] = - [tex]\frac{1}{2}[/tex]
The line crosses the y- axis at (0, 2) ⇒ c = 2
y = - [tex]\frac{1}{2}[/tex] x + 2 ← equation of line
Answer:
x + 2y = 4
Step-by-step explanation:
The y intercept (where it crosses the y axis) is (0,2)
Another point on the line is (4,0)
We can find the slope from these two points
m = (y2-y1)/(x2-x1)
= (0-2)/(4-0)
=-2/4 = -1/2
We have the slope and the y intercept
y = mx+b where m is the slope and b is the y intercept
y = -1/2x +2
We want the equation of the line in standard form
Ax +By =C
Add -1/2x to each side
1/2x +y = -1/2x +1/2x +2
1/2x +y = 2
Multiply by 2 because we do not want fractions
2(1/2x +y) = 2* 2
x + 2y = 4
Find the sum.
2x
x2 - 6x + 9 + x2 + 2x - 15
Answer:
[tex]\large\boxed{x^2-6x+9+x^2+2x-15=2x^2-4x-6}[/tex]
Step-by-step explanation:
[tex]x^2-6x+9+x^2+2x-15\qquad\text{combine like terms}\\\\=(x^2+x^2)+(-6x+2x)+(9-15)\\\\=2x^2-4x-6[/tex]
simplify 30 (1/2 x -2) + 40 (3/4 y - 4)
Answer:
10(3/2x-22+3y)
Step-by-step explanation:
YOU YES YOU WILL BE MARKED AS BRAINLIST TO YHIS QUESTION!!✔
Answer:
16 -> 15/20 -> 0.65 -> -7/25
Step-by-step explanation:
Why?
Most of the numbers in the set are rational where there is only ONE nature number which is 16 and it's the greatest. Comes after is 15/20 which equals .75 and it's obviously larger than 0.65 which will come after. The negative number is the smallest so it goes last :)
Which expression can be used to determine the slope of the line that passes through the points (-7,3) and (1,-9)
Answer:
m = (-9-3)/(1+7)
Step-by-step explanation:
To find the slope given two points we use
m = (y2-y1)/(x2-x1)
m = (-9-3)/(1--7)
m = (-9-3)/(1+7)
m = -12/8
= -3/2
Slope m has a form of,
[tex]m=\dfrac{\Delta{y}}{\Delta{x}}=\dfrac{y_2-y_1}{x_2-x_1}[/tex]
Your points say A and B have a form of,
[tex]A(x_1,y_1),B(x_2,y_2)\longrightarrow A(-7,3),B(1,-9)[/tex]
We can populate our slope formula to,
[tex]m=\dfrac{-9-3}{1-(-7)}=\dfrac{-12}{8}=\boxed{-\dfrac{3}{2}}[/tex]
The slope of the line that passes through point A and B is m = -3/2
Hope this helps.
r3t40
–7x + 8y = 1
4x – 8y = 20
What is the y-coordinate of the solution for this system?
A. –1
B. –6
C. 1
D. 6
PLEASE HELP, i got 7 but thats not one of the answers
[tex]\bf \begin{cases} -7x+8y=1\\ 4x-8y=20 \end{cases}\qquad \qquad \stackrel{\textit{using elimination}}{ \begin{array}{llll} -7x~~\begin{matrix} +8y \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~=1\\ ~~4x~~\begin{matrix} -8y \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~=20\\ \cline{1-1}\\ -3x~\hfill =21 \end{array}}[/tex]
[tex]\bf x=\cfrac{21}{-3}\implies \blacktriangleright x=-7 \blacktriangleleft \\\\\\ \stackrel{\textit{substituting in the 2nd equation}}{4(-7)-8y=20}\implies -28-8y=20\implies -8y=48 \\\\\\ y=\cfrac{48}{-8}\implies \blacktriangleright y = -6 \blacktriangleleft[/tex]
The solution to the system is (x, y) = (-2.2, -1.8) the y-coordinate of the solution is -1, the correct option is A.
What is an equation?
An equation is an expression that shows the relationship between two or more numbers and variables.
A mathematical equation is a statement with two equal sides and an equal sign in between. An equation is, for instance, 4 + 6 = 10. Both 4 + 6 and 10 can be seen on the left and right sides of the equal sign, respectively.
We are given that;
The equations;
–7x + 8y = 1
4x – 8y = 20
Now,
To solve this system of equations, we can use the elimination method. We can multiply the first equation by 2 and add it to the second equation to eliminate y:
-14x + 16y = 2 +4x - 8y = 20
-10x = 22
x = -2.2
Now that we have x, we can substitute it into either equation to solve for y. Let’s use the first equation:
-7x + 8y = 1 -7(-2.2) + 8y = 1 15.4 + 8y = 1 8y = -14.4 y = -1.8
Therefore, the solution to the system of equations will be (x, y) = (-2.2, -1.8) the y-coordinate will be -1.
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Daniela scored 101 points in 5 basketball games. Casey scored 154 points in 8 games. Hope scored 227 points
in 12 games.
Order the players by their points per game from least to greatest.
Answer:
- Hope 18.92
- Casey 19.25
- Daniela 20.2
Explanation:
divide the points/basketball games
Answer:
Hope, Casey, Daniela
Step-by-step explanation:
Since,
[tex]\text{Points per game}=\frac{\text{total scores}}{\text{Total number of games}}[/tex]
Given,
Daniela scored 101 points in 5 basketball games,
Daniela's His points per game = [tex]\frac{101}{5}=20.20[/tex]
Casey scored 154 points in 8 games,
Casey's points per game = [tex]\frac{154}{8}=19.25[/tex]
Hope scored 227 points in 12 games.
Hope's points per game = [tex]\frac{227}{12}\approx 18.92[/tex]
∵ 18.92 < 19.25 < 20.20
Hence, the order of the players by their points per game from least to greatest,
Hope, Casey, Daniela
(2)(a)Which is smaller, 1/6 or 4/7?
______ is smaller than 1/2
______ is greater than 1/2
______ is smaller than _____
(b) Which is greater, 3/8 or 5/9?
_____ is greater than _____
Please help me.. Btw this is P4 work..
1/6 is smaller than 1/2
4/7 is greater than 1/2
1/6 is smaller than 4/7
b) 5/9 is greater than 3/8
have a great day!
Answer:
Hi!
a)
1/6 is smaller than 1/2.4/7 is greater than 1/2.1/6 is smaller than 4/7.b)
5/9 is greater than 3/8.Step-by-step explanation:
If you are having problems doing the comparision, the best form to check if a number is greater or smaller than another, you can divide the fraction and obtain the decimal form.
Example:
1/6 ≅ 0.16.
4/7 ≅ 0.57.
1/2 = 0.50.
3/8 ≅ 0.37.
5/9 ≅ 0.55.
Now, you can replace the numbers and check again:
0.16 is smaller than 0.5.4/7 is greater than 0.5.0.16 is smaller than 0.57.b)
0.55 is greater than 0.375.Hi please try answering this problem thank you so much
Answer:
[tex] 2x + 3 [/tex]
the sum of twice the number x and the number 3
[tex] x ^ 2 + y ^ 2 [/tex]
the sum of squares of the number x and the number y
[tex] 5x-2y [/tex]
the difference between five times more than the number x and twice the number y
[tex] x + 3x [/tex]
the sum of the number x and the number of triple x
[tex] \dfrac {ab} {3} [/tex]
the quotient of the product of the number a and the number b by the number 3
[tex] \dfrac {4x} {3y} [/tex]
the quotient of the product of the number 4 and the number x by the triple number y
[tex] \dfrac {m ^ 2} {n} +5 [/tex]
the sum of the quotient of the square of the number m by the number n and the number 5
[tex] 4-x [/tex]
the difference between the number 4 and the number x
[tex] p + 8q [/tex]
the sum of the number p and the product of the number 8 by the number q
[tex] n-6 [/tex]
the difference between the number n and the number 6
Find the geometric means in the following sequence.
-9,?,?,?,?,-9,216
Select one:
a. -144, -576, -2,304, -9,231
b. 36, 144, 576, 2,304
c. -720, -1,080, -1,440, -1,800
d. -36, -144, -576, -2,304
Answer:
Last choice. d.
Step-by-step explanation:
We are given the first term and the sixth term.
The first term is [tex]a_1=-9[/tex].
The sixth them is [tex]a_6=a_1r^5=-9216[/tex].
Let's solve for the common ratio, r.
[tex]-9r^5=-9216[/tex]
Divide both sides by -9:
[tex]r^5=1024[/tex]
Take the fifth root of both sides:
[tex]r=1024^{\frac{1}{5}}[/tex]
[tex]r=4[/tex]
So the common ratio is 4.
[tex]a_1=-9[/tex]
[tex]a_2=-9(4)=-36[/tex]
[tex]a_3=-9(4)^2=-144[/tex]
[tex]a_4=-9(4)^3=-576[/tex]
[tex]a_5=-9(4)^4=-2304[/tex]
[tex]a_6=-9(4)^5=-9216[/tex]
Help please !!!!!!!!!!!!!!!!
Answer:
Option B is correct.
Step-by-step explanation:
(x+2<5) U (x-7>-6)
Solving and finding the value of x and then taking Union of both answers
x+2 < 5
x < 5-2
x < 3
x-7 > -6
x > -6 + 7
x > 1
So, x < 3 or x > 1
{x|x<3 or x > 1}
Option B is correct.
Use the drawing tool(s) to form the correct answers on the provided grid. Consider the function g. For the x-value given in the table, determine the corresponding values of g(x) and plot each point on the graph.
Answer:
(-2,-12), (-1,-6), (0,-3) and (1,-3/2)
Step-by-step explanation:
g(x) = -3(1/2)^x
Putting values of x
x g(x)
-2 -3(1/2)^-2 = -12
-1 -3(1/2)^-1 = -6
0 -3(1/2)^0 = -3
1 -3(1/2)^1 = -3/2
Now, making the graph we will plot
(-2,-12), (-1,-6), (0,-3) and (1,-3/2)
The graph is shown in figure below.
To find g(x) values, substitute the x-values into the function equation. Calculate the result which gives you the y-value (g(x)) for each x-value. Plot these pairs of values on a graph to show the function's behavior.
Explanation:To find the corresponding values of the function g(x), you need to substitute the x-values given into the function equation of g. For instance, if g(x) is a linear function given by y=3x+9, when x=1 the value of g(x) is 3*1+9=12, and this is the y-coordinate of the point plotted on the graph. Repeat this process with all the given x-values to get the corresponding y-values. Afterwards, plot all the (x, g(x)) pairs on the coordinate grid. The points are found at the intersection of the x and y (g(x)) values on the grid. After plotting, you can connect the points to give a graphical representation of the dependence of y on x.
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The first two terms in a sequence are 3 and 15. What is the next value if this sequence is geometric?
Answer:
75
Step-by-step explanation:
Geometric means you should think common ratio (words like multiplication or division).
First term=3
Second term=15
What can you multiply to first to give you second term? Please say 5! Yes 5! Why? Because 3*5=15.
So 5 is called the common ratio. 5 is the number that you will multiply to a term to find the very next term.
So the third term would be 15*5=75
The next value in the geometric sequence is 75.
Explanation:A geometric sequence is a sequence of numbers in which each term can be found by multiplying the previous term by a fixed, non-zero number called the common ratio. In this case, to find the next value in the sequence, we need to determine the common ratio. We can divide the second term (15) by the first term (3) to find the common ratio:
Common ratio = 15/3 = 5
Now that we know the common ratio is 5, we can find the third term in the sequence:
Third term = Second term × Common ratio = 15 × 5 = 75
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SEE PHOTO. Based on the diagram, all of the following are true except...
A) cos38 = 24/x
B) sin52 = 24/x
C) cos38 = x/34
D) cos52 = x/24
Answer:
Option D) cos52 = x/24
Step-by-step explanation:
In this problem angle of 38 degrees and angle of 52 degrees are complementary angles
so
38°+52°=90°
therefore
cos(38°)=sin(52°)
we know that
see the attached figure with letters to better understand the problem
In the triangle ABD
cos(38°)=24/x ----> The cosine of angle of 38 degrees is equal to divide the adjacent side to angle of 38 degrees by the hypotenuse
Remember that
cos(38°)=sin(52°)
so
sin(52°)=24/x
In the right triangle ABC
cos(38°)=x/34 ----> The cosine of angle of 38 degrees is equal to divide the adjacent side to angle of 38 degrees by the hypotenuse
In the right triangle ABD
Applying the Pythagoras Theorem
[tex]BD=\sqrt{x^{2}-576}\ units[/tex]
[tex]cos(52\°)=(\sqrt{x^{2}-576})/x[/tex]----> The cosine of angle of 52 degrees is equal to divide the adjacent side to angle of 52 degrees by the hypotenuse
Which graph is the graph of the function f(x) = | x-1/4 | +4
Answer:
Step-by-step explanation:
David, if the problem came with possible answer choices, you need to share those choices.
The graph of f(x) = | x-1/4 | +4 stems from the graph of y = |x|, the absolute value function. Draw this function; its vertex is at (0, 0) and it's v-shaped, opening upward.
First, translate this graph 1/4 unit to the right. Second, translate the resulting graph 4 units upward. Done.
Answer: A for plato users or edmentum
Step-by-step explanation:
State whether the given equation or function is linear. Write yes or no. Explain your reasoning. 5x4 + 5y = 9
Answer:
The given equation is NOT linear.
Step-by-step explanation:
5x^4+5y = 9
The given equation is NOT linear.
Reason:
A linear equation is defined as the equation for the straight line, where the degree of variables involved is always equal to 1.
But in the given equation :
Degree if x = 4
and degree of y = 1
As degree of x≠ 1 so, the given equation is not linear,
Jamaal has 20 models of planes and cars. He has three times as many cars as planes. What is the ratio of his cars to total models?
1:4
3:1
3:4
4:3
Answer:
The correct answer is third option 3 : 4
Step-by-step explanation:
It is given that,Jamaal has 20 models of planes and cars
Also he has three times as many cars as planes
Let 'x' be the number planes.
Then number of cars = 3x
Total number of models = x + 3x = 4x
To find the ratio of his cars to total models
cars : total models = 3x : 4x
= 3 : 4
Therefore the correct answer is third option 3 : 4
Answer:
3:4 is the answer and give the guy above me brainliest
Step-by-step explanation:
Polygon PQRST shown below is dilated with a scale factor of 3, keeping the origin as the center of dilation:
Which statement about polygon PQRST and its image after dilation, polygon P'Q'R'S'T', is correct?
A) The Length Of Diagonal PS And Diagonal P'S' Are In The Ratio 1:3
B) The Length Of Diagonal PT And Diagonal R'Q' Are In The Ratio 1:3
C) The Length Of Diagonal PT Is Equal To The Length Of Side P'T'.
D) The Measure Of Angle S and Angle S' are in the ratio 1:3.
Answer:
A) The Length Of Diagonal PS And Diagonal P'S' Are In The Ratio 1:3
Step-by-step explanation:
when a polygon is multiplied or scaled by k, a constant scalar number to form another polygon then these two polygons are similar. And similar polygons have proportional lengths of corresponding sides. Ratios within the polygons sides will be equal to the corresponding sides ratios of the other polygons. The corresponding sides of image are scalar multiple of preimage
x'=kx
where x' is side in image
x is side in preimage
and k is scalar number
so the ratio between these two corresponding side will be 1:3
In given case as the scalar factor k is 3 so the ratio between corresponding sides will be 1:3.
Hence option A is correct:The Length Of Diagonal PS And Diagonal P'S' Are In The Ratio 1:3!
A statement about polygon PQRST and its image after dilation, polygon P'Q'R'S'T', that is correct include the following: A) The Length Of Diagonal PS And Diagonal P'S' Are In The Ratio 1:3.
How to determine the scale factor of a segment?In Mathematics and Geometry, the formula for calculating the scale factor of any geometric object or figure is represented by the following:
Scale factor = side length of image/side length of pre-image
Based on the graph, the length of diagonal P'S' is 5 units while the length of diagonal PS is 15 units. In this context, the length of segment A'B' can be calculated as follows;
Scale factor = P'S'/PS
Scale factor = 5/15
Scale factor = 1/3 ⇒ Ratio = 1 : 3.
In conclusion, we can logically deduce that the length of diagonal PS and diagonal P'S' are in the ratio 1 : 3, which implies that diagonal PS is three times as long as diagonal P'S'.
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Fast please!!
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Match each expression to the scenario it represents.
Answer:
Part 1) The price of a USB memory, stick selling at a 21% discount of its market price (m) ------> 0.79m
Part 2) The price or a CD that sells for 21% more than the amount (m) needed to manufacture the CD -----> 1.21m
Part 3) The final value of a painting after its initial value m, increases by 2/5 -----> [tex]\frac{7}{5}m[/tex]
Part 4) The total number of markers that Nancy has if she gives away 2/5 of her m markers to Amy -----> [tex]\frac{3}{5}m[/tex]
Step-by-step explanation:
Part 1) The price of a USB memory, stick selling at a 21% discount of its market price (m)
we know that
100% is the market price m
100%-21%=79%
79%=79/100=0.79
so
The price of a USB memory with a 21% discount of its market price is equal to multiply m by 0.79
(0.79)*m=0.79m
Part 2) The price or a CD that sells for 21% more than the amount (m) needed to manufacture the CD
we know that
100% is the amount m
100%+21%=121%
121%=121/100=1.21
so
The price or a CD that sells for 21% more than the amount (m) is equal to multiply m by 1.21
(1.21)*(m)=1.21m
Part 3) The final value of a painting after its initial value m, increases by 2/5
we know that
100% is the initial value m
2/5=0.40=40%
100%+40%=140%
140%=140/100=1.4
Convert to fraction
1.4=14/10=7/5
so
The final value is equal to m multiplied by 7/5
[tex]\frac{7}{5}m[/tex]
Part 4) The total number of markers that Nancy has if she gives away 2/5 of her m markers to Amy
we know that
100% is the number of makers m
2/5=0.40=40%
100%-40%=60%
60%=60/100=0.6
Convert to fraction
0.6=6/10=3/5
The total number of markers that Nancy has is equal to multiply m by 3/5
so
[tex]\frac{3}{5}m[/tex]
What is the sine value of 2 pi over 3? negative 1 over 2 1 over 2 negative square root 3 over 2 square root 3 over 2
Answer:
[tex]\large\boxed{\sin\dfrac{2\pi}{3}=\dfrac{\sqrt3}{2}}[/tex]
Step-by-step explanation:
[tex]\sin\dfrac{2\pi}{3}=\sin\bigg(\pi-\dfrac{\pi}{3}\bigg)\\\\\text{use}\ \sin(x-y)=\sin x\cos y-\sin y\cos x\\\\=\sin\pi\cos\dfrac{\pi}{3}-\sin\dfrac{\pi}{3}\cos\pi\\\\\text{use the table from the attachment}\\\\\sin\pi=0\\\\\cos\dfrac{\pi}{3}=\dfrac{1}{2}\\\\\sin\dfrac{\pi}{3}=\dfrac{\sqrt3}{2}\\\\\cod\pi=-1\\\\\text{subtitute:}\\\\=(0)\left(\dfrac{1}{2}\right)-\left(\dfrac{\sqrt3}{2}\right)(-1)=\dfrac{\sqrt3}{2}[/tex]
The value of sin 2π/3 will be;
⇒ √3 / 2
What is Mathematical expression?The combination of numbers and variables by using operations addition, subtraction, multiplication and division is called Mathematical expression.
Given that;
The expression is,
⇒ sin 2π/3
Now,
Since, The expression is,
⇒ sin 2π/3
⇒ sin 2×180/3
⇒ sin 120°
⇒ sin (90 + 30)°
⇒ cos 30°
⇒ √3 / 2
Thus, The value of sin 2π/3 = √3 / 2
Learn more about the trigonometry function visit:
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Which ordered pairs are in the solution set of the system of linear inequalities?
y>= -1/2x
y< 1/2x+1
a. (5,-2), (3, 1), (-4, 2)
b. (5,-2), (3, -1), (4, -3)
c. (5,-2), (3, 1), (4,2)
d. (5,-2), (-3,1), (4,2)
Answer:
c. (5,-2), (3, 1), (4,2).
Step-by-step explanation:
The solutions are in the dark red area, with some on the continuous blue line but none on the red dotted line.
The only option that has only solutions for the system is option C.
How to find solutions of a system of inequalities?
Each inequality has a region of solutions defined by the shaded areas, such that the double shaded area represents the region of points that are solutions for both inequalities at the same time.
So we just need to see from the options, which ones belong to the double shaded area.
We can see that the only option that has all the points belonging to the double shaded area is option C, with the points:
(5, - 2), (3, 1), (4, 2)
While in the other 3 options we can find at least one point that is not a solution for the system, these are:
a) (-4, 2) is not a solution.b) (4, - 3) is not a solution.d) (-3, 1) is not a solution.If you want to learn more about systems of inequalities, you can read:
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Suppose S and T are mutually exclusive events find P(S or T) if P(S)=1/3 and P(T)=5/12
Answer:
P(S or T)= 3/4
Step-by-step explanation:
Given:
S and T are mutually exclusive events
find P(S or T)
P(S or T)= P(S) + P(T)
= 1/3 +5/12
=4+5/12
=9/12
=3/4 !
Answer:
The value of P(S or T) is 3/4.
Step-by-step explanation:
It is given that S and T are mutually exclusive events. It means intersection of S and T is 0.
[tex]S\cap T=0[/tex]
[tex]P(S\cap T)=0[/tex]
We need to find the value of P(S or T). It means we have to find the probability of union of S and T.
[tex]P(S\cup T)=P(S)+P(T)-P(S\cap T)[/tex]
Substitute the given values in the above formula.
[tex]P(S\cup T)=\frac{1}{3}+\frac{5}{12}-(0)[/tex]
[tex]P(S\cup T)=\frac{4+5}{12}[/tex]
[tex]P(S\cup T)=\frac{9}{12}[/tex]
[tex]P(S\cup T)=\frac{3}{4}[/tex]
Therefore the value of P(S or T) is 3/4.
As Artemis Fowl's private jet approaches Heathrow airport, its horizontal distance from the airport is 22 miles when his altitude is 2.2 miles. To the nearest degree, what is the angle of descent of Artemis' plane?
Answer:
The angle of descent of Artemis' plane is 6°
Step-by-step explanation:
Let
x -----> the angle of descent of Artemis' plane
we know that
The tangent of angle x is equal to divide the opposite side to angle x (altitude) by the adjacent side to angle x (horizontal distance)
see the attached figure to better understand the problem
so
tan(x)=2.2/22
x=arctan(2.2/22)=5.71°
Round to the nearest degree
x=6°
Answer:
The angle of descent of Artemis' plane is 6°
Step-by-step explanation: