Answer:
B..........................
The statement that is not an identity is cos(2x)csc(x) - csc(x) = -sin(x), the correct option is C.
What is the expansion of sum for cosine of sum of two angles?
Suppose we've got cosine of angle A and B measurements.
Then, we have:
sin(B)
[tex]\cos(A+B) = \cos(A)\cos(B) - \sin(A)\sin(B)[/tex]
If we get A = B, then:
[tex]\cos(2A) = \cos^2(A)- \sin^2(A)[/tex]
We are given that;
An identity is an equation that is true for all values of the variable.
The following three options are identities:
sin(x)(cot(x) + tan(x)) = sec(x)
csc^2(x) + sec^2(x) = 1
cos(2x) - sin(2x) = 1 - 2sin^2(x)
Therefore, by the trigonometric identities the answer will be cos(2x)csc(x) - csc(x) = -sin(x)
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the equation of the line of best fit of a scatter plot is y=7x - 9 what is the slope if the equation
-9
-7
7
9
Answer:
slope is 7
Step-by-step explanation:
Answer:
7
Step-by-step explanation:
slope of equation = gradient of graph = coefficient of x = 7
find the distance between the two points (-1,3) and (4,2) ?
Answer:
sqrt(26) units
Step-by-step explanation:
Use the formula d=sqrt((x2-x1)^2 + (y2-y1)^2). d is the distance, and (x1, y1) and (x2, y2) are the points.
d=sqrt((4-(-1))^2 + (2-3)^2)
=sqrt(5^2 + (-1)^2)
=sqrt(25+1)
=sqrt(26)
PLEASEE HELLLP!!! I WILL GIVE BRAINLIST!!!
Answer:
Step-by-step explanation:
Given the figure below. What is the theorem or postulate that justifies triangle ABD congruent
to triangle CBD?
Answer:
SAS is the answer in my opinion
please help!!!! ASAP!!!
Step-by-step explanation:
...x=+2...
...y=-3...
Nance I need help hihihihihihihi
Answer:
11 cans
Step-by-step explanation:
1 hr = 60 min
33 hrs = ? min
Setup proportion and solve for x:
[tex]\frac{1hr}{60 min} =\frac{33hrs}{xmin}[/tex]
Do butterfly method and get x = 1980 minutes
Then take the 1980 divide it by 180 to find the number of cans.
[tex]\frac{1980}{180} =11[/tex]
Quinn is mixing juices to make pund for a party. Select all the mixtures
that will fit into a 1-gallon pitcher.
6 pänts apple juice and 6 cups cranberry juice
2 quarts apple juice and 8 cups cranberry juice
5 pints apple juice and 2 quarts cranberry juice
9 cups apple juice and 3 pints cranberry juice
punts apple juice and 3 quart qanberry juice
Answer:
2 quarts apple juice and 8 cups cranberry juice
9 cups apple juice and 3 pints cranberry juice
Step-by-step explanation:
We can easily obtain the answer by converting all the volumes to the same unit and comparing each of them, to see if they can make up to a gallon.
1). 6 pints apple juice and 6 cups cranberry juice
Let us convert pints and cups to gallons
1 pint = 0.125 gallons
6 pints = 6 X 0.125 = 0.75 gallons
1 cup = 0.0625 gallons
6 cups = 6 X 0.0625 =0.375 gallons
Total juice got from here is 0.75 +0.375 = 1.125gallons.
This cannot fit into the one-gallon pitcher as it is more in volume than a gallon.
2) 2 quarts apple juice and 8 cups cranberry juice.
2 quarts = 0.5 gallons
8 cups = 0.5 gallons.
Total juice got here is 0.5 + 0.5 = 1 gallon.
This can fit into the 1-gallon pitcher
3). 5 pints of apple juice and 2 quarts of cranberry juice
5 pint = 0.625 gallons
2 quarts = 0.5 gallons
Total juice got here is 0.625+ 0.5 = 1.125 gallon
This cannot fit into the 1-gallon pitcher
4). 9 cups of apple juice and 3 pints of cranberry juice
9 cups = 0.5625 gallons.
3 pints = 0.375 gallons
Total juice got here is 0.5625 + 0.375 = 0.9375 gallons.
This can fit into the 1-gallon pitcher because it is of less volume.
Hence, only these combination of drinks can fit into the 1-gallon pitcher:
2 quarts apple juice and 8 cups cranberry juice
9 cups apple juice and 3 pints cranberry juice
The average of 20 numbers is 75. The number 86 was incorrectly read as 68 while calculations. Find the correct average
Answer:
79.7
Step-by-step explanation:
average = 20x75=1440
wrong average68+86=154
correct average 1440+154/20=79.7
hope this is correct.
h(a)=2a+4
g(a)-2a^2+2
find (h+g)(a+3)
Answer:
hello :
(g/f)(3) = g(3)/f(3)
but : g(3) =3(3)+2 = 11
f(3) 2(3)-4 = 2
g/f)(3) = 11/2
Given f(x) = 3x^3 -5x + k, and x-2 is a factor of f(x), then what is the value of k?
Answer:
-14
Step-by-step explanation:
Given f(x) = 3x^3 -5x + k, and x-2 is a factor of f(x), then what is the value of k?
This is an interesting question, since I have to think I have ever seen a question like this asked before.
3x³ - 5x + k i'll try dividing by x-2 and adjust k so there is no remainder
3x² + 6x + 7
x-2 | 3x³ + 0x² - 5x + k
3x³ - 6x
6x² - 5x
6x² - 12x
7x + k
7x - 14
0 remainder is 0 if k = - 14
when I graphed 3x³ - 5x -14 and (x-2)(3x² +6x +7) the graphs were equivalent
determine the sequence
Answer:
Add 3 each time. (for question #8)
Step-by-step explanation:
9+3=12
12+3=15
15+3=18
18+3=21
21+3=24
24+3=27
.
.
.
A circle has a radius of 2 feet. What is the circumference of the circle? (Use π ≈ 3.14)
A. 4 ft
B. 8 ft
C. 12.56 ft
D. 14.65 ft
Answer:
C) 12.56
two times 3.14 times the radius.
Gabriel bought a dog crate shaped like a rectangular prism with the dimensions shown in the model 36x24x30
Answer:
25920
Step-by-step explanation:
you do lxwxh
[tex]\sqrt \frac18[/tex]
Step-by-step explanation:
[tex]\sqrt{1/8}[/tex]=[tex]\sqrt{1} /\sqrt{8}[/tex]
[tex]\sqrt{8} =2\sqrt{2}[/tex]
[tex]1/(2\sqrt{2} )[/tex]
if the denominator is a root then multiply itself by itself to get an integer
[tex]1(2\sqrt{2} )/((2\sqrt{2})(2\sqrt{2} ))[/tex]
[tex]\sqrt{2} /4[/tex]
Hope that helps :)
PLS HELP ASAP I WILL GIVE BRAINLY
Answer:
x=22
Step-by-step explanation:
Label the intersection point between K and J as H. Similarly, label the intersection point between K and L as M.
The triangle proportionality theorem states that HK/JK=MK/LK.
Substitute the values into the equation above. HK=36-6=30. LK=2x-4+8=2x+4.
30/36=2x-4/2x+4
Now, solve:
30(2x+4)=36(2x-4)
60x+120=72x-144
12x=264
x=22
In ⊙O, ST and VT are tangents. m∠STV = 22°. Find the value of a, b, and m∠SOV.
Answer:
[tex]\huge \orange {\boxed {a =202\degree}} [/tex]
[tex] \huge \purple {\boxed { b = 158\degree}} [/tex]
[tex]\huge \red {\boxed {m\angle SOV = 158\degree}} [/tex]
Step-by-step explanation:
In [tex] \odot[/tex] O, ST and VT are tangents at points S and V respectively.
[tex] \therefore OS\perp ST, \:and\: OV\perp VT[/tex]
[tex] \therefore m\angle OST=m\angle OVT = 90\degree [/tex]
In quadrilateral OSTV,
[tex] m\angle SOV +m\angle OST+m\angle OVT+m\angle STV = 360\degree [/tex]
(By interior angle sum postulate of a quadrilateral)
[tex] m\angle SOV +90\degree +90\degree +22\degree = 360\degree [/tex]
[tex] m\angle SOV +202\degree = 360\degree [/tex]
[tex] m\angle SOV = 360\degree-202\degree [/tex]
[tex]\huge \red {\boxed {m\angle SOV = 158\degree}} [/tex]
[tex] \because b = m\angle SOV[/tex]
(Measure of minor arc is equal to measure of its corresponding central angle)
[tex] \huge \purple {\boxed {\therefore b = 158\degree}} [/tex]
[tex] \because a + b= 360\degree [/tex]
(By arc sum property of a circle)
[tex] \therefore a = 360\degree - b[/tex]
[tex] \therefore a = 360\degree -158\degree[/tex]
[tex]\huge \orange {\boxed {\therefore a =202\degree}} [/tex]
5.6^2 + 3.8^5 x 8.1^9 + 2.5^7
Help PLeAse
Answer:
1. Y=2
2.A=1.3
5.p=28/3
Step-by-step explanation: make me brainliest
56 POINTS
Step 1: Analyze the graph.
Daredevil Danny takes a practice jump as shown on the graph below. Complete the steps to determine the equation for the parabolic trajectory of his practice jump.
⦁ What are the key aspects of any parabola? What do the key aspects tell you about the graph?
(5 points)
⦁ What are the key aspects of Daredevil Danny’s practice jump shown in the graph provided? Describe each value and how it is determined. (10 points)
Step 2: Solve for coefficient a.
⦁ What equation is used to find the vertex form of a parabola with the vertex (h, k)? (5 points)
⦁ Solve for the coefficient a in the vertex form for the parabola in Daredevil Danny’s practice jump using key aspects from step 1. As you solve for the coefficient, explain each step of the process in detail. (15 points)
⦁ What is the vertex form of the parabola from Daredevil Danny’s practice jump? (5 points)
Answer:
Step 1:
What are the key aspects of any parabola? What do the key aspects tell you about the graph?
(5 points)
0=a(4-24)^2+50
-50=a(4-24)^2
4-24
-20^2=400
-50=a(400)
-50=400a
-50/400=-0.125
a = -0.125
B.) What are the key aspects of Daredevil Danny’s practice jump shown in the graph provided? Describe each value and how it is determined. (10 points)
The roots and vertex, you can find the vertex by using vertex form y=a(x-h)^2+k. You find the roots by solving the quadratic equation.
Step 2: Solve for coefficient a.
a.) What equation is used to find the vertex form of a parabola with the vertex (h, k)? (5 points)
f(x) = a(x-h)^2 +k
b.) Solve for the coefficient a in the vertex form for the parabola in Daredevil Danny’s practice jump using key aspects from step 1. As you solve for the coefficient, explain each step of the process in detail. (15 points)
Not sure about this one...?
c) What is the vertex form of the parabola from Daredevil Danny’s practice jump? (5 points)
f(x)=-12/25(x-25)^2+32
The equation of Daredevil Danny's jump in vertex form is y = -0.32(x - 25)^2 + 32
The key aspects of the graphThe graph that completes the question is added as an attachment
These are the vertex and the intercepts of the graph.
The intercepts tell us about when the time of flight and the time of landing, while the vertex tell about the maximum height of Danny's jump.
From the graph, we have:
Vertex = (25,32)x-intercepts = 15 and 35The value of the coefficient aA quadratic function is represented as:
y = a(x - h)^2 + k
Where:
vertex = (h,k)
So, we have:
y = a(x - 25)^2 + 32
Substitute the value of the x-intercept
0 = a(15 - 25)^2 + 32
Subtract 32 from both sides
a(15 - 25)^2 = -32
Solve for a
a = -0.32
Hence, the value of the coefficient a is -0.32
So, the equation in vertex form is y = -0.32(x - 25)^2 + 32
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A bike trail is 2 2/5 miles long. Rosie rides her bicycle on the bike trail 4 days a week. How many miles does Rosie ride per week?
Answer: Rosie biked 9.6 miles per week because you do 2 2/5 times 4. 2 2/5 becomes 12/5 and you just times it by 4.
Hope it helps! :D
Please help meeeee!!
Answer:
-27
Step-by-step explanation:
order of operations 2÷2 = 1 +53 =54
3x1 = 3 -5 = -2
54÷-2 = -27
Given square JKLM, JK=9. Find JL
Answer:
answer is 18
Step-by-step explanation:
.................
Answer:
11
Step-by-step explanation:
It may not be correct
A salesperson earns $350 per week, plus a 35% commission on each sale made. How much would the salesperson earn if he sold $750 worth of merchandise in one week?
The salesperson will have a commission of $262.5 and earn $612.5 in one week if he sold $750 worth of merchandise.
How to calculate the commission and earning for the salespersonWe first calculate the 35% commission on the $750 sales of merchandise, and then add the result to his weekly earning of $350.
35% commission on $750 = (35 × $750)/100
35% commission on $750 = $2625/100
35% commission on $750 = $262.5
salesman's earning for the week = $350 + $262.5
salesman's earning for the week = $612.5
In conclusion, the salesman will earn $612.5 if he sold $750 worth of merchandise in one week, which is the sum of his $350 per week earning and the 35% commission.
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I need help please right now
Answer:
4 maybe
Step-by-step explanation:
If you do x2 +13x+ 36
you get
(x+9)x(x+4)
Find the volume of this cube
Answer:
Step-by-step explanation:
This is a cube so the formula for the volume of a square is a³ = Volume
This means:
5³ = V
V = 125in³
Answer:
125 in^3
Step-by-step explanation:
b/c
v=L×w×h
V=5 in×5 in×5 in
v=125 in^3
3/2=5d-1/2
how to solve d
Answer:
d = 0.4
Step-by-step explanation:
3/2 + 1/2 = 5d - 1/2 + 1/2
2 = 5d
2 ÷ 5 = 5d ÷ 5
0.4 = d
d = 0.4
If Mike walked 10 miles in two hours how many miles did he walk in one hour?
Answer:
5 miles
Step-by-step explanation:
10 miles in 2 hours
so the half in 1 hour; 5 miles
sovle for x , no links
Answer:
inequality form
[tex]x \geqslant - 3[/tex]
PLEASE HELP ME IN THIS IS FOR A HOUR
One interior angle of a triangle is 60⁰. The other angle measures are x⁰ and y⁰. Which of the following could be the values of x and y? Select all that apply.
A.
x = 40, y = 80
B.
x = 50, y = 90
C.
x = 100, y = 20
D.
x = 45, y = 45
E.
x = 60, y = 60
Which graph shows the line y = x + 1?
there are 32 student in a class 7 sun I'f the ratio of boys and girls is 5:3 find the number of boys and girla
Answer:
there are 20 boys and 12 girls