Answer:
the percent can be 36% or 35% but i would go for 36%
if sinA+cosecA=3 find the value of sin2A+cosec2A
Answer:
[tex]\sin 2A + \csc 2A = 2.122[/tex]
Step-by-step explanation:
Let [tex]f(A) = \sin A + \csc A[/tex], we proceed to transform the expression into an equivalent form of sines and cosines by means of the following trigonometrical identity:
[tex]\csc A = \frac{1}{\sin A}[/tex] (1)
[tex]\sin^{2}A +\cos^{2}A = 1[/tex] (2)
Now we perform the operations: [tex]f(A) = 3[/tex]
[tex]\sin A + \csc A = 3[/tex]
[tex]\sin A + \frac{1}{\sin A} = 3[/tex]
[tex]\sin ^{2}A + 1 = 3\cdot \sin A[/tex]
[tex]\sin^{2}A -3\cdot \sin A +1 = 0[/tex] (3)
By the quadratic formula, we find the following solutions:
[tex]\sin A_{1} \approx 2.618[/tex] and [tex]\sin A_{2} \approx 0.382[/tex]
Since sine is a bounded function between -1 and 1, the only solution that is mathematically reasonable is:
[tex]\sin A \approx 0.382[/tex]
By means of inverse trigonometrical function, we get the value associate of the function in sexagesimal degrees:
[tex]A \approx 22.457^{\circ}[/tex]
Then, the values of the cosine associated with that angle is:
[tex]\cos A \approx 0.924[/tex]
Now, we have that [tex]f(A) = \sin 2A +\csc2A[/tex], we proceed to transform the expression into an equivalent form with sines and cosines. The following trignometrical identities are used:
[tex]\sin 2A = 2\cdot \sin A\cdot \cos A[/tex] (4)
[tex]\csc 2A = \frac{1}{\sin 2A}[/tex] (5)
[tex]f(A) = \sin 2A + \csc 2A[/tex]
[tex]f(A) = \sin 2A + \frac{1}{\sin 2A}[/tex]
[tex]f(A) = \frac{\sin^{2} 2A+1}{\sin 2A}[/tex]
[tex]f(A) = \frac{4\cdot \sin^{2}A\cdot \cos^{2}A+1}{2\cdot \sin A \cdot \cos A}[/tex]
If we know that [tex]\sin A \approx 0.382[/tex] and [tex]\cos A \approx 0.924[/tex], then the value of the function is:
[tex]f(A) = \frac{4\cdot (0.382)^{2}\cdot (0.924)^{2}+1}{2\cdot (0.382)\cdot (0.924)}[/tex]
[tex]f(A) = 2.122[/tex]
A total of 250 people were surveyed about whether or not each person carries a cell phone. The results are shown below in the relative frequency table.
Answer:it is 180
Step-by-step explanation:
69 cents each. She used partial products to find the total cost in cents. Which are NOT possible partial products for 24 × 69? Choose all that apply. A. 24 B. 36 C. 180 D. 240
Answer:
A. 24
Step-by-step explanation:
If we have two digits to multiply together, the multiplication of the individual digit of those number with each other whereby each digit retain its place is known as partial product.
From the given question, by applying the distributive property method, the partial products are:
24 × 69 = 24 × (60 + 9)
open brackets
= (24 × 60) + (24 × 9)
By factorization
= 60 (20 + 4) + 9(20 + 4)
expanding the brackets, we get:
= (60 × 20) + (60 × 4) + (9 × 20) + (9 × 4)
= 1200 + 240 + 180 + 36 (These are the partial products)
= 1656
Write a linear equation that is parallel to the equation below and passes through the point (7, 4). y = 2x − 7
Answer:
y=2x-10
Step-by-step explanation:
Original Equation: y=2x-7
Plug in (7,4) and keep the same slope bec line has to be parallel
b=-10
plug in b
y=2x-10
hey....... hope yall doing good im not plz help
Answer:
SamJennaMarcusJosephI hope this makes you feel good :D
Tysm trystatroxtle278 for helping me notice my mistake!
Answer:
A
Step-by-step explanation:
Calculate The Constant of Proportionality (k) and Write an Equation for the line in the Graph Below:
Answer:
K = ½
Equation: y = ½x
Step-by-step explanation:
✔️Constant of proportionality (k) = y/x
Using a point on the line, (2, 1),
k = ½
✔️Equation of a proportional relationship would be in the form of y = kx
To write an equation, substitute k = ½, into y = kx
Thus:
y = ½x
Please help. 100 points + brainliest
IMPORTANT NOTE: the "*" sign in the equations means it is the end point of the square root sign.
Solve the following equations:
1) Solve for x: √12* (√3* - x) = 15
2) Solve for x: √3x - 1* = 7 What is the root? If there is no root, choose none.
3) Solve for x: √3x* + 1 = 7 What is the root? If there is no root, choose none.
4) Solve for x: 3√x* + 1 = 7 What is the root? If there is no root, choose none.
5) Solve for x: √2y - 5* + 4 = 8 What is the root? If there is no root, choose none.
6) Solve for z: √z^2 + 5* - 2 = z What is the root? If there is no root, choose none.
Answer:
1) x = -2.5
2) x = 21 1/3
3) x = 12
4) x = 4
5) y = 40.5
Step-by-step explanation:
Answer:
1) x = -2.5
2) x = 21 1/3
3) x = 12
4) x = 4
5) y = 40.5
Give the person above a brainliest
Find the height of the following triangles:
Ab =?
Cb=6m
Angle acb = 45 degree
Answer:
AB=6Step-by-step explanation:
according to the question
the equation is
[tex] \tan(45 {}^{o} ) = \frac{x}{6} [/tex]
[tex]1 = \frac{x}{6} [/tex]
[tex]x = 6[/tex]
Write a unit rate for the situation. Round to the nearest hundredth if necessary. 210 heartbeats in 3 minutes
Answer:
70 heartbeats per second
Step-by-step explanation:
The value of a collectible coin can be represented by the equation y = 2 x + 9.74, where x represents the number of years that Consuello has owned the coin and y represents the total value, in dollars, of the coin. What was the value of the coin when Consuello originally purchased it? $4.87 $7.74 $9.74 $19.48
Answer:
you would multiply 2 * 4.87 and then add that to 9.74 and then you do that to everyone and then one of them will get you your answer and I am not sure about the answer but I think its b
Step-by-step explanation:
Answer:
The value of the coin when Consuelo originally purchased it is $9.74 ⇒ C
Step-by-step explanation:
The form of the linear equation is;
y = m x + b, where
m is the slope of the line (The rate)
b is the y-intercept (initial amount, value y at x = 0)
∵ The value of a collectible coin can be represented by the equation
y = 2 x + 9.74
→ Compare it with the form of the linear equation above
∴ m = 2
∴ b = 9.74
∵ x represents the number of years that Consuelo has owned the coin
∵ y represents the total value, in dollars, of the coin
→ That means the value of y at x = 0 is the value of the coin when
Consuelo originally purchased it
∵ b represents the value of y at x = 0
∵ b = 9.74
∴ The value of the coin when Consuelo originally purchased it is $9.74
will give brainly
show work
23-5•4-2(6-1)
Answer:-7
Step-by-step explanation:
Answer:
-7
Step-by-step explanation:
so you have to do PEMDAS
first parenthesis 6-1 is 5
then multiplication 5x4 is 20
the subtraction 23-20-2(5)
2x5=10
23-20=3
3-10=-7
I need help ASAPPPPPO
Answer:
3x²y==
Step-by-step explanation:
Multiple the number
Help! What is the equation of this line?
Step-by-step explanation:
The line is the y-axis, where x = 0.
Equation of the line: x = 0.
ryan was paid up front to babysit her neighbors children for 6 days how much would she earn for just one day.
Which polynomial represents the area of the rectangle?
a. 3x2+2x−5
b. 3x2−5
c. 3x2−2x−5
d. 3x2−8x−5
Answer:
Step-by-step explanation:
The correct option is C.
Step-by-step explanation:
The width of the rectangular pen is
The length of the rectangular pen is
The perimeter of a rectangle is
Therefore the correct option is C.
A political poll showed that 80 percent of those polled said they would vote for proposition P. Of those who said they would vote for proposition P,70 percent actually voted for P,and of those who did not say they would vote for P,20 percent actual voted for P.What percent of those polled voted for P
Answer:
60%
Step-by-step explanation:
Let the total number of people polled to vote be 1000
80% said they would vote for him
That is 800
20% said they would not vote for him
That is 200
Out of the 800, 70% actually voted
That will be ;
70/100 * 80 = 560
Also, 20% of the 200 that said they would not vote actually voted
That will be ;
20/100 * 200 = 40
Total is thus;
569 + 40 = 600
% is 600/1000 = 60%
If a car decreases its speed from 80 km/h to 45 km/h in 14 seconds, what is its rate of acceleration?
Answer:
-2.5 km
Step-by-step explanation:
80 - 45= 35
35 / 14 sec. = 2.5
So if your decreasing it would turn that 2.5 into a negative.
If g(x) = 4x + 1 and g(x) = -11, find x.
Answer:
x = - 3
Step-by-step explanation:
g(x) = 4x + 1...... (1)
g(x) = -11.... (2)
From equations (1) & (2)
-11 = 4x + 1
-11 - 1 = 4x
-12 = 4x
-12/4 = x
-3 = x
x = - 3
Will give brainiest! Please look at pic and answer.
Answer:
i do think its 15
Step-bep explanation:
put the 25 in halph and that how its 15
Flvs Algebra 2: Module 4 exam part 1.
Answer:hi:)
Step-by-step explanation:
The equation y = (x + 2)² + 3 represents the shown parabolic graph. The correct answer is option B.
The vertex of the parabola occurs at the point (-2, 3), which is the point where the parabola reaches its minimum value.
The term (x + 2)² indicates that the parabola is translated horizontally by 2 units to the left from the standard vertex form of a parabola.
The "+3" term indicates that the parabola is translated vertically by 3 units upward.
Hence, the equation y = (x + 2)² + 3 represents the shown parabolic graph.
Thus, the correct answer is option B.
Learn more about the parabola here:
brainly.com/question/4074088
#SPJ2
Ill mark brainless to who answers first and correct :)
Answer:
$4.69
Step-by-step explanation:
$11.96/4 (because he bought 4 candles)
$2.99
each candle was $2.99 at the sale price
Now because the question is only asking for the amount of 1 candle before the sell price all you have to do is add $1.70 to $2.99 and you have your answer. Hope this helps!
which statement describes the relationship between -2 and -4?
Samuel and Joyce both bought CDs. Samuel bought 3x CDs and Joyce bought 2x-1 CDs. If each CD had a Regular price of $18 and a discount of $2. What is the expression for the COST of their CDs, combined?
Answer:
2(5x – 1)
Step-by-step explanation:
whats is this bruh
Answer:
A. (f - g)(x) = -7x - 3
General Formulas and Concepts:
Algebra I
Composite FunctionsCombining Like TermsStep-by-step explanation:
Step 1: Define
f(x) = -3x - 5
g(x) = 4x - 2
(f - g)(x) is f(x) - g(x)
Step 2: Find (f - g)(x)
Substitute: (f - g)(x) = -3x - 5 - (4x - 2)Distribute -1: (f - g)(x) = -3x - 5 - 4x + 2Combine like terms: (f - g)(x) = -7x - 3Answer:
A. (f - g)(x) = -7x - 3
General Formulas and Concepts:
Algebra I
Composite Functions
Combining Like Terms
Step-by-step explanation:
Step 1: Define
f(x) = -3x - 5
g(x) = 4x - 2
(f - g)(x) is f(x) - g(x)
Step 2: Find (f - g)(x)
Substitute: (f - g)(x) = -3x - 5 - (4x - 2)
Distribute -1: (f - g)(x) = -3x - 5 - 4x + 2
Combine like terms: (f - g)(x) = -7x - 3
The cost of a ticket to an amusement park is $42 per person. For groups of up to 8 people, the cost per ticket decreases by $3 for each person in the group. Marcos's ticket cost $30. Write and solve an equation to find the number of people in Marcos's group.
Answer:
Cost of each ticket per person = $42
For groups of up to 8 people, the cost per ticket decreases by $3 for each person in the group.
Marco's ticket cost $30.
This means he paid 42-30=12 dollars less.
Now when there are 8 members, the cost decreases by $3.
So, $12 will decrease, when there will be members
I hope this helps! Have an awesome day!
Answer:
The answer is there are 32 people in this group
Step-by-step explanation:
here is proof work if you need it:
what is the line that passes through (2,4) and (3,8)
Answer:
2, 4
Step-by-step explanation:
i just look at a graph
Answer:
the axis of symmetry
Step-by-step explanation:
What does y equal? A. 51 B. 39 C. 37
Answer:
B. 39°
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
BracketsParenthesisExponentsMultiplicationDivisionAdditionSubtractionLeft to RightAlgebra I
Equality PropertiesGeometry
[Right Triangles Only] SOHCAHTOA[Right Triangles Only] tanθ = opposite over adjacentStep-by-step explanation:
Step 1: Identify
Angle θ = y
Opposite Leg = 8
Adjacent Leg = 10
Step 2: Solve for y
Substitute [Tangent]: tan(y) = 8/10Simplify: tan(y) = 4/5Inverse Trig: y = tan⁻¹(4/5)Evaluate: y = 38.6598Round: y ≈ 39°HELP!! WHAT ARE THE ANSWERS??!!!
=================================
Explanation:
The result of problem 7 is undefined because the matrices are not the same size. Both matrices must have the same number of rows, and they must have the same number of columns. This is so the terms match up when we add them. This applies to question 9 as well because subtraction is a form of addition.
For problem 8, we add the corresponding terms. So for instance, along the top we have -2+(-3) = -5 as the first entry in the top row. So that's why the answer is C for problem 8. Problem 10 and 11 are similar to this. Be careful to distribute the negative through to each term in the second matrix when subtracting matrices.
For problem 12, we multiply the outer 3 by each term inside the matrix. We end up with choice B.
Which of the following are solutions to the equation below?
Check all that apply.
x2 + 10x + 25 = 8
Answer:
The correct options for the solution values are:
[tex]x=2\sqrt{2}-5[/tex][tex]x=-2\sqrt{2}-5[/tex]Step-by-step explanation:
Given the expression
[tex]x^2+10x+25=8[/tex]
Subtract 25 from both sides
[tex]x^2+10x+25-25=8-25[/tex]
Simplify
[tex]x^2+10x=-17[/tex]
Add 25 or 5² to both sides
[tex]x^2+10x+5^2=8[/tex]
as
[tex]x^2+10x+5^2=\left(x+5\right)^2[/tex]
so the expression becomes
[tex]\left(x+5\right)^2=8[/tex]
[tex]\mathrm{For\:}f^2\left(x\right)=a\mathrm{\:the\:solutions\:are\:}f\left(x\right)=\sqrt{a},\:-\sqrt{a}[/tex]
solve
[tex]x+5=\sqrt{8}[/tex]
Subtract 5 from both sides
[tex]x+5-5=2\sqrt{2}-5[/tex]
[tex]x=2\sqrt{2}-5[/tex]
solve
[tex]x+5=-\sqrt{8}[/tex]
Subtract 5 from both sides
[tex]x+5-5=-2\sqrt{2}-5[/tex]
[tex]x=-2\sqrt{2}-5[/tex]
Therefore, the solution to the equation
[tex]x=2\sqrt{2}-5,\:x=-2\sqrt{2}-5[/tex]
Hence, the correct options for the solution values are:
[tex]x=2\sqrt{2}-5[/tex][tex]x=-2\sqrt{2}-5[/tex]❓❗❓❗PLEASE HELP ASAP❓❗❓❗
(3z^3 – 4z + 7z^2) + (8z^2 - 6z - 5)
Simplify (8x^3 - 5x+1)-(x^2+4). Show your work
Simplify the product 4x(5x^2+ 3x +7).
Simplify and write in standard form