Step-by-step explanation:
I really hope that that will be of help to you
Please help as soon as possible
The exact values are:
sin(α + β) = (-6√5 - 8)/25
cos(α + β) = (4√5 - 6)/25
sin(α - β) = (-6√5 + 8)/25
tan(α - β) = (-9√5 + 45)/4
We have,
Recall the trigonometric identities:
sin(a + b) = sin(a)cos(b) + cos(a)sin(b)
cos(a + b) = cos(a)cos(b) - sin(a)sin(b)
sin(a - b) = sin(a)cos(b) - cos(a)sin(b)
cos(a - b) = cos(a)cos(b) + sin(a)sin(b)
tan(a - b) = (tan(a) - tan(b))/(1 + tan(a)tan(b))
Using these identities, we can find the exact values of the expressions given.
(a) Sin (α + β)
sin(α + β) = sin(α)cos(β) + cos(α)sin(β)
= (√5/5)(-3/5) + (2/5)(-4/5) (using the values given for sin and cos)
= -6√5/25 - 8/25
= (-6√5 - 8)/25
(b) Cos (α + β)
cos(α + β) = cos(α)cos(β) - sin(α)sin(β)
= (2/5)(-3/5) - (√5/5)(-4/5) (using the values given for sin and cos)
= -6/25 + 4√5/25
= (4√5 - 6)/25
(c) Sin (α - β)
sin(α - β) = sin(α)cos(β) - cos(α)sin(β)
= (√5/5)(-3/5) - (2/5)(-4/5) (using the values given for sin and cos)
= -6√5/25 + 8/25
= (-6√5 + 8)/25
(d) tan (α - β)
tan(α - β) = (tan(α) - tan(β))/(1 + tan(α)tan(β))
= ((√5/5) - (-4/5))/(1 + (√5/5)(-4/5)) (using the values given for sin and cos)
= (9√5/5)/(1 - 4/5√5)
= (-9√5 + 45)/4
Therefore,
The exact values are:
sin(α + β) = (-6√5 - 8)/25
cos(α + β) = (4√5 - 6)/25
sin(α - β) = (-6√5 + 8)/25
tan(α - β) = (-9√5 + 45)/4
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what expressions are equivalent k^-1/6
\( \leadsto \sf {k}^{ - \frac{1}{6} } \)
\( \\ \)
\( \leadsto \sf \dfrac{1}{{k}^{ - \frac{1}{6} }} \)
\( \\ \\ \)
\( \leadsto \sf \dfrac{1}{ \sqrt[6]{k} } \)
Answer:
(k^-1)^1/6
\(\sqrt[6]{k ^-1}\)
Step-by-step explanation:
for second one -1 is coefficient sry can't format it
Find the dimensions of the rectangular box with largest volume if the total surface area is given as 100 cm2. (Let x, y, and z be the dimensions of the rectangular box.)(x, y, z) =
The dimensions of the rectangular box with largest volume if the total surface area is given as 100 cm2: x = y = z = 2.449 cm.
Given that:
Total surface area of the rectangular box or cuboid = 100 cm²
A rectangular box with largest volume is a cube.
The total surface area of a cube = 6 times square of one edge length.
Let the edge length = given dimensions; x, y, z
So,
x = y = z
6x^2 = 100
x^2 = 100 / 6
x = √ 100 / 6
x = 10 / √ 6 cm
x = 2.449 cm
Hence, dimensions of the rectangular box with largest volume if the total surface area is given as 100 cm2: x = y = z = 2.449 cm.
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A right triangle has an area of 36 square units.
If you draw scaled copies of this triangle using the scale factors in the
table, what will the areas of these scaled copies be? Fill in the table.
scale factor
area (units2)
36
1
2.
3
5
1
2
1
2 / 3
2
3
Question
If you draw scaled copies of this triangle using the scale factors in the
table, what will the areas of these scaled copies be?
Answer: Hi, There! Mika-Chan
The Answer for the Scale Factor is....
→1 Scale and 36 Units ←
Hope this Helps!
Which equation is equivalent to 60% of 25.
Answer
0.6 • 25 = x
Step-by-step explanation:
60/100 x 25
0.6 x 25
What is the volume of this rectangular prism? 1/2cm 4cm 3/2cm
i will mark brainliest thank u
Answer:
3
Step-by-step explanation:
i changed 1/2 into 0.5 and 3/2 into 1.5 then 0.5 times 4 times 1.5 and got 3
pls mark me branilest
35 is what percent of 28?
Answer:
9.8
Step-by-step explanation:
I checked on google
Answer:
9.8
Step-by-step explanation:
help pls- 10 points- algebra 1
solve for x
-8x+14 ≥ 60 OR − 4x+50 -2
D.) There are no solutions
Answer:
-8x+14 ≥ 60
Inequality Form:
x< -23/4
Interval Notation:
(−∞,−23/4)
Suppose a population of 25 house flies triples every 2months. How many house flies will there be in 1 year
Answer:
Therefore, there will be 18,225 house flies in 1 year. (It's kind of a joke/trick question since House Flies only live 28 days (range 15-30 days). So, in reality, you'll have to take that into consideration.
Step-by-step explanation:
Since the population triples every 2 months, we can express the population as:
P = 25 * 3^(t/2)
Where P is the population size after t months.
To find the population size after 1 year, we need to substitute t = 12 into the equation:
P = 25 * 3^(12/2)
P = 25 * 3^6
P = 25 * 729
P = 18225
Therefore, there will be 18,225 house flies in 1 year.
The ratio of boys to girls in a class is 2:3. What fraction of the students are girls? If there are 80 boys, how many students are there altogether?
Find the lines of symmetry for each shape. Select all that apply. .A.lb.mc.nd.none
When we talk of a line of symmetry, we mean a line that passes through a plane shape and divides the shape into exactly two equal halves.
Any line that passes through a shape and gives us two other shapes which are complements of each other such that when they are joined together gives back the original shape.
In the question, we can identify three lines , l , m and n and we want to select which of these lines are lines of symmetry.
How do we go about this?
We simply look at both sides of the line, if what we have on both lines are equal, then what we have is a line of symmetry.
Looking at each line drawn , we can see that only line m divides the shape in a way that the two pieces can be overlapped.
Although the other two lines cut the shape into two, they do not give that overlapping image that line m would give
Hence, for this shape, line m is the line of symmetry
A parallelogram has sides measuring 10 and 18, and an angle measuring 100 degrees. What is its area?
Answer:
180
Step-by-step explanation:
The area of a parallelogram is given by the formula A = b × h, where b is the base and h is the height. In this case, the base is 10 and the height is 18. Therefore, the area is:
A=10×18
A=180
The area of the parallelogram is 180 square units
Once simplified, which of the expressions below is equal to −3x−39? Select all that apply.
A) 6(2x–5)–15x–9
B) −3(x+13)
C) 6(23x–5)−7x–9
D) 3x(x–3)
Find the nth term of this quadratic sequence 6, 16, 32, 54, ...
Answer:
3n squared+n+2
Answer:
the nth term of the sequence is 2n² + 4T
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Step-by-step explanation:
he sequence represents a quadratic function, the nth term of the sequenceis 2n² + 4
The nth term of a quadratic sequence is :an² + bn + c c = zeroth term ; a = second difference ÷ 2
From the sequence :First difference = 6, 10, 14, 18Second difference = 4, 4, 4
First difference between terms in position 1 and 0 :6 - 4 = 2
Zeroth term = First term in sequence - 2 = 6 - 2 = 4a = 4/2 = 2
Plugging the values into the equation :2n² + bn + 4 Using the 2nd term :n = 22(2)² + 2b + 4 = 128 + 2b + 4 = 12 2b = 12 - 12 2b = 0b = 0
Hence, the nth term of the sequence is 2n² + 4
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During a jump, a sky diver reaches terminal velocity. Which forces are in effect during a sky dive, and are they balanced or unbalanced when the jumper is at terminal velocity?(1 point)
Unbalanced. The force of gravity is stronger than the force of air resistance, which is why the sky diver is falling.
Balanced. The forces of gravity, air resistance, and speed are all in balance.
Balanced. The force of gravity is balanced with the force of air resistance.
Unbalanced. The force of air resistance is stronger than the force of gravity, which is why the sky diver is at terminal velocity.
Answer:
1.) Unbalanced
Step-by-step explanation:
have a great day
find the value of x and the measure of angle axc
Answer:
x = 4
m<AXC = 150
Step-by-step explanation:
m<1 + m<2 = m<AXC
102 + 10x + 8 = 6(6x + 1)
10x + 110 = 36x + 6
26x = 104
x = 4
m<AXC = 6(6x + 1)
m<AXC = 6(24 + 1)
m<AXC = 150
What is the midpoint of LQ?
point M
point N
point P
point Q
A) Find the slope of the line passing through the points (−8, -4) and (−8, 8).
B) Find the slope of the line passing through the points (3, 4) and (−3, 4).
The slope of the line passing through the points (−8, -4) and (−8, 8) is undefined.
The slope of the line passing through the points (3, 4) and (−3, 4) is equal to 0.
How to calculate the slope of a line?In Mathematics, the slope of any straight line can be determined by using this mathematical equation;
Slope (m) = (Change in y-axis, Δy)/(Change in x-axis, Δx)
Slope (m) = (y₂ - y₁)/(x₂ - x₁)
Substituting the given points into the slope formula, we have the following;
Slope (m) = (y₂ - y₁)/(x₂ - x₁)
Slope (m) = (8 - (-4))/(-8 - (-8))
Slope (m) = (8 + 4)/(-8 + 8)
Slope (m) = 12/0
Slope (m) = undefined.
For line B, we have the following;
Slope (m) = (y₂ - y₁)/(x₂ - x₁)
Slope (m) = (4 - 4)/(-3 - 3)
Slope (m) = 0/6
Slope (m) = 0.
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Find the equation of the line using the given information and the point-slope form. Express the equation in slope-intercept form slope = 2Point = (5,7)
Given the point (5, 7) and the slope 2, using the point-slope form we have the equation of the line:
\(y-y_0=m(x-x_0)\)Where m is the slope and x₀ and y₀ are the coordinates of the given point. From this problem, we identify m = 2, x₀ = 5, and y₀ = 7. Then:
\(y-7=2(x-5)\ldots(1)\)The slope-intercept form is given by:
\(y=m\cdot x+b\)Where m is the slope and b is the y-intercept. Using equation (1):
\(\begin{gathered} y=2x-10+7 \\ y=2x-3 \end{gathered}\)1. Is a triangle with sides of 20, 30, and 11 acute, obtuse, right, or not a triangle.
as 20+11>30 it is a triangle
now for angle
let us consider a=20,b=30,c=11 and their opposite angle be A,B,C respectively
then B =cos-inverse((a^2 +c^2-b^2)/2ac))
p.s We are calculating value of B because it is opposite of largest side b so it will be highest angle
or B = cos-inverse((400+121-900)/(2*30*11))
B = 125.04 degree
since B> 90 the triangle is obtuse triangle
Answer:
obtuse
Step-by-step explanation:
Given the 3 sides 20, 30 and 11
For the sides to form a triangle then the sum of any 2 sides must be greater than the third side.
20 + 30 = 50 > 11
20 + 11 = 31 > 30
30 + 11 = 41 > 20
Thus the 3 sides form a triangle
To determine what type of triangle it is
let c be the longest side and a, b the other 2 sides
• If a² + b² = c² then triangle is right
• If a² + b² > c² then triangle is acute
• If a² + b² < c² then triangle is obtuse
Here c = 30, a = 20, b = 11
c² = 30² = 900
a² + b² = 20² + 11² = 400 + 121 = 521
Since a² + b² < c² then triangle is obtuse
The pioneers who traveled the Oregon Trail went about 2,000 miles while traveling an average of 12 miles per day. How many days did it take to travel the entire trail
We are told that the group traveled an average of 12 miles per day. So, for example, after 1 day of travel, the traveled distance would be 12. After day two, they would have traveled 12 extra miles. That is
\(12+12=24\text{ = 2}\cdot12\)So note that to calculate the traveled distance, we take the number of days and multiply it by the average rate of miles per day (12 miles per day). Let x be the total amount of days the group took to travel 2000 miles. So , according to what we just described, we have the equation
\(x\cdot12=2000\)so, by dividing both sides by 12 we get
\(x=\frac{2000}{12}=\frac{1000}{6}=\frac{500}{3}=166.666\)so, the group took about 167 to travel the entire trail.
I have attached the question. I need this quickly.
The solution of the inequality equation is x > -π/2 or x > 3π/2.
What is the value of x in the inequality?The value of x in the inequality is calculated by applying the following formula as follows;
Given 0 ≤ x < 2π,
tan (x/2) > - 1
To determine the value of x take the arc tan of (-1) as follows;
x/2 > arc tan (-1)
x/2 > -π/4
x > -π/2
In the interval π/2 ≤ x < π:
x/2 > arc tan (-1)
x/2 > 3π/4
x > 3π/2
Thus, the solution of the inequality equation is x > -π/2 or x > 3π/2.
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Verify that the Intermediate Value Theorem applies to the indicated interval and find the value of c guaranteed by the theorem.f(x) = x^2 + x + 1, [0, 6], f(c) = 13c =
The given function is:
\(\begin{gathered} f(x)=x^2+x+1 \\ \text{Interval } \\ \lbrack0,6\rbrack \end{gathered}\)Start by evaluating the function in the extreme values of the interval:
\(\begin{gathered} f(0)=0^2+0+1 \\ f(0)=1 \\ \text{And} \\ f(6)=6^2+6+1 \\ f(6)=36+6+1=43 \end{gathered}\)The intermediate value theorem states: if a function f is continuous in an interval [a,b], and k is any number between f(a) and f(b), then there exists a number c between a and b such that f(c)=k.
As k=13 and it is between 1 and 43, then there is a number c such that f(c)=13.
Now, replace f(c) by 13 and solve for c:
\(\begin{gathered} 13=c^2+c+1 \\ \text{Subtract 13 from both sides} \\ 13-13=c^2+c+1-13 \\ 0=c^2+c-12 \end{gathered}\)Let's find the factored form to find the c-values:
\(\begin{gathered} c^2+c-12=(c+4)(c-3) \\ \text{Then equal both factors to zero and solve for c} \\ c+4=0 \\ c=-4 \\ \text{and} \\ c-3=0 \\ c=3 \end{gathered}\)As -4 is not in the interval, thus the value of c guaranteed by the theorem is c=3.
Solve the following equation if d = -2. If necessary, round to the nearest tenth. 2/3(6c+9d)+3/4(8c-16d)=-18
Answer:
c = - 3-----------------------------------
Simplify the equation by distribution, then substitute the value of d and solve for c:
2/3(6c + 9d) + 3/4(8c - 16d) = - 182/3(6c) + 2/3(9d) + 3/4(8c) - 3/4(16d) = - 184c + 6d + 6c - 12d = - 1810c - 6d = - 1810c - 6(-2) = - 1810c + 12 = - 1810c = - 12 - 1810c = - 30c = - 3Fourth eight time four
Answer:
2
Step-by-step explanation:
We have a multiplication problem within a whole number and a fraction.
When multiplying fractions with whole numbers, you always multiply the whole number with the numerator of the fraction.
\(\frac{numerator}{denominator}\)
\(\frac{4}{8} *4\)
\(\frac{4*4}{8}\)
\(\frac{16}{8}\)
Divide 16 by 8 :
\(2\)
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from,
m = y - y1
x - x1
m = 2 - 5
4 - 1
m = -3 = -1
3
then,
y - y1 = m(x - x1)
using coordinates (1, 5)
y - 5 = -1(x - 1)
y = -x + 1 + 5
y = -x + 6.
please help , ill give brainliest
6x3=18...............................................................................................
Answer:
yeah 6×3=18 by multiplying 6 and 3
On his most recent math test, Jeremy answered 48 questions correct out of 80 total questions. Which statement can be made about Jeremy's math test?
Answer:
Jeremy has gotten more than half of the test's questions correctly.
Step-by-step explanation:
To get half of the questions correctly, Jeremy needed at least 40, and Jeremy got more than 40, meaning he got more than half.
What degree of rotation about the origin will cause the triangle below to map
onto itself?
B
-8 -6
C
8
6
MO
2
-2-
T
-6-
-8
6 8
Answer: 6 feet and 2 yards are the same distance because each yard is 3 feet
Step-by-step explanation: