3. How would you explain to someone who has not yet studied trigonometry the
difference between an identity and an equation?
Answer:
Solving an equation means finding the value or values for which the two expressions are equal. ... An identity is an equation which is always true, no matter what values are substituted.
A trig identity is an equation that is true for all values of x;
For example:
sin²x + cos²x will always equal 1 no matter what the value of x.
There are some equations considered to be identities that are in fact not true all the time.
tan(2x) = 2tanx/(1 - tan²x) is not true when x = π/2 (right side is undefined).
A conditional equation is one that is true for a subset of the real numbers, i.e. for certain values of x, but not all.
For example:
sin²x - 1 = 0 is only true for some values of x.
sin²x = 1
sinx = ±√(1) = ±1
sinx = 1 or sinx = -1
x = sin-11 or x = sin-1(-1)
x = π/2 + 2kπ, k any integer or x = 3π/2 + 2kπ, k any integer (this can be condensed, but left this way for emphasis).
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CAN SOMEONE PLZ HELP ME?? PLZ DO YOU KNOW ABOUT Coordinate Planes??!! plzzzzzz help
Answer:
4
Step-by-step explanation:
Line f is 4 units from the x-axis.
Angels ABC and DEF are supplementary angles. The measure of angle ABC, in degrees, is given by the expression 2x + 10. The measure of angle DEF, in degrees, is given by the expression 3x - 15. What is the value of x?
Answer:
x = 31°
Step-by-step explanation:
Recall ;
Supplemtary angles summ up to 180°
Given that :
ABC and DEF are Supplementary angles and hence sum up to 180°
ABC + DEF = 180°
(2x + 10) + (3x + 15) = 180
2x + 10 + 3x + 15 = 180
2x + 3x + 10 + 15 = 180°
5x + 25° = 180°
5x = 180 - 25
5x = 155
x = 155 / 5
x = 31°
Students in the gardeing club are planting a flower garden. They have a total of $200 to spend. They spent $80 on the much. how many packs of bulds can they buy if eachpack cost $30
Answer:
they can by 4
Step-by-step explanation:
A car is purchased for $30,000. The value of the car depreciates annually so that it is $24,000 after 1 year, $19,200 after 2 years, and $15,360 after 3 years. Why can this situation be modeled using an exponential function?
The value of the car depreciates annually by 20%.
The value of the car depreciates annually by 80%.
The value of the car depreciates annually by $6,000.
The value of the car depreciates annually by $4,800.
Answer:
It annually drops by 20%
Step-by-step explanation:
30,000 multiplied by 20% is 6000. Subtract 6000 from 30,000 and you get 24,000. 24,000 multiplied by 20% is 4,800. Subtract 4,800 from 24,000 and you get 19,200. Etc.
HELP PLEASE ASAP A rectangular prism has a length of 19 meters, a height of 13 meters, and a width of 14 meters. What is its volume, in cubic meters?
Answer:
3458
Step-by-step explanation:
The record low temperature in Fargo, ND is -37F. The record high is 109F what is the difference in the record high and the record low temperature?
F. 72
G.109
H.33
J.146
It’s either 72 or 146 I’m not sure though! Please help. It will be appreciated.
Answer:
Step-by-step explanation:
Answer: i think its 146
Step-by-step explanation:
5
4
3
M(-2, 1)
2
1
-5
1
2
5
4
5
х
-4 -3 -2 -1
-1
-2-
-3-
-4
N (5,-3)
-5-
What is me distance between points M and N?
ОА. 11
O C. 33
O B. V13
OD. V65
Answer:
5
Step-by-step explanation:
not you deleting it
find the measure of the indicated angle to the nearest degree
B. 47°
hope this helps :)
Answer:
A) 71°
Step-by-step explanation:
indicated angle =
[tex]sin^{-1} \frac{51}{54} = sin^{-1}0.94[/tex]
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
Answer:
B
Step-by-step explanation:
i believe it's plot 1 & 2
PLEASE HELP
Morty buys and sells computer parts. He bought two monitors for $25.00 each and later sold them for
$88.00 each. He bought four cases for $15.00 each and later sold them for $24.00 each. He bought
five memory modules for $20.00 each and later sold them for $55.00 each.
Answer: 600$$
Step-by-step explanation:
What is the difference between the mean sales of the shops? А $9.60 B $10.00 С $10.40 D $50.00
Answer:
nsnsjejsndnrndnjjndnd
Step-by-step explanation:
ndsnnssnnsnssnjsjd
jehejwwk
What number is a square root of 1 ?
Answer:
1 is the square root of 1.
Hope that helps! :)
Step-by-step explanation:
Write an expression equivalent to
72 using operations with
exponents.
(Will mark brainliest)
Answer:
Step-by-step explanation:
2x6²( = 2x36 ) = 72
Mr. Wilson's new picnic basket is shaped like a cube. Each side is 11 inches long. What is the volume of the picnic basket?
Answer:
1331 in^3
Step-by-step explanation:
Well a cube is all identical So followiung the volume for a cube formula
s^3 or in this case 11^3, its 1331.
how many 20 dollar bills and 50 dollar bills
linked picture
Answer:
3 $50's and 12 $20's
Step-by-step explanation:
I believe this is the correct answer, good luck
Answer:
8.9 billion in 20dollar and 1.7 billion in 50 dollar
Part D How do the measures of the sides and angles of ABC compare with the corresponding measurements in the three Images?
Answer:
The measurements of the sides and angles of triangle ABC are the exact same as the measurements in the three images.
Step-by-step explanation:
please mark as Brainliest :)
Please can someone help me out with this- I’m really stuck on this problem and I can’t get off of it cause I failed it to much :/
Which of the following is a proportion?
Answer:
the second one
Step-by-step explanation:
If a toy truck is created in a 2:9 scale, and the wheel of the toy is 14cm wide, how wide is the actual wheel?
Answer:63 cm
Step-by-step explanation:
Given
The scale of creation is 2:9
The width of the toy wheel is 14 cm
Suppose x is the actual width of the truck
[tex]\therefore \dfrac{2}{9}=\dfrac{14}{x}\\\\\Rightarrow x=\dfrac{9}{2}\times 14=63\ cm[/tex]
Thus, the width of actual truck is 63 cm
Point P' is the image of the point P after a counterclockwise rotation of 90 degress about the origin. If the coordinates of point P' are (-7,-3) what are the coordinates of point P?
A. (-3,-7)
B. (-3,7)
C. (3,-7)
D. (3,7)
The function f(x)=240x represents the cost of staying at a particular hotel for x nights at the full room rate of $240 per night. The hotel gives its rewards members a discount based on the length of their stay. Each additional night that rewards members stay earns them an additional 5% discount on the total cost of their stay up to a 30% discount. The function d(x)=0.05(x-1) for 1 < x ≤ 7 represents the percentage discount in decimal form for a rewards member staying x nights at the hotel.
(a) Write an equation in simplified form to represent (fd)(x).
(b) Evaluate (fd)(4), and explain what this value represents.
I WILL OFFER BRAINLIEST FOR THE BEST ANSWER!!! HURRY NOW!!
A customer earns 1 free night per 10 nights stayed.
What is function?Function, in mathematics, an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable.
Here, we have,
A hotel offers a reward program based on the number of nights stayed. The function f(x) represents the number of free nights earned as a function of x, the number of nights stayed.
f(x)=x/10
When we put x=10, we get f(1)=10/10=1
Here f(1) represents the number of free nights earned by the customer is 1 per 10 nights stayed.
When we put x=20, we get f(2)=20/10=2
Here f(2) represents the number of free nights earned by the customer is 2 per 20 nights stayed.
When we put x=30, we get f(3)=30/10=3
Here f(3) represents the number of free nights earned by the customer is 3 per 30 nights stayed.
When we put x=40, we get f(4)=40/10=4
Here f(4) represents the number of free nights earned by the customer is 4 per 40 nights stayed.
Then, the pattern permits you to conclude that a customer earns 1 free night for every 10 nights stayed.
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complete question:
a hotel offers a reward program based on the number of nights stayed. the function f(x) represents the number of free nights earned as a function of x, the number of nights stayed. f(x)
What is the volume of this figure??
Answer:
meter hvcdfghzdjgdfghe
Answer:
64,800
Step-by-step explanation:
Andy constructed a triangle. Angle 1 and 2 are the same size and angle 3 has a measurement of 100 degrees. What is the measurement of angle 1 and angle 2?
a , 30
b 40
c 60
d 90
Answer:
Angle 1: 40
Angle 2: 40
Step-by-step explanation:
A triangle's angles will ALWAYS add up to 180 degrees total, therefore you can subtract 100 from 180 to find what the measure of A and B are combined.
180 - 100 = 80
So now we know Angles A and B add to 80 degrees, but individually, each is half of that, so both are 40 degrees.
please help, need help asap!
Seventy-five 6th grade students chose to watch a movie on the last day of school. This is 25% of the 6th-grade class. How many total students are in the 6th grade? *
Answer:
300 students in total
Step-by-step explanation:
25% out of 300 is 75
300 - 75 (25%) = 225
25% (75) + 75% (225) = 100% (300)
Hopefully this helps :3 sorry if wrong :( plz mark brainiest if correct :D your bootiful/handsome! Have a great day luv <3
-Bee~
Answer:
300
Step-by-step explanation:
help me pls i will give you brainliest
Answer:
A. 36
Step-by-step explanation:
Answer:
A has to be A
Step-by-step explanation:
person above is right
Please help me guys!!!:)
Answer:
The answer is >
second one
Step-by-step explanation:
Good luck !
What are the missing coordinates of the vertices of this rectangle?
Answer:
A ( -d , e )
B ( - d , -e )
C ( d , - e )
Step-by-step explanation:
The centroid of the circle is on the origin.
This means that coordinates are an equal distance away from each other
Ex. Coordinate A and coordinate B are an equal distance away.
The only difference between the coordinates is the signs of the x and y values
This is determined by what quadrant the specific coordinate is in
Ex. Coordinate A is in Quadrant 2.
Coordinates in Quadrant 2 have a negative x value and a positive x value
Because Coordinate A and the given coordinates ( d , e ) have an equal distance between them all we have to do to find the missing coordinate is add a negative sign in front of the x value (d)
That being said, the coordinate of A is (-d,e).
This process is used to find the rest of the missing coordinates
for B
B lies in Quadrant 3
Quadrant 3 = ( -x , -y )
* add negative signs to the x and y value of the given coordinate *
B = ( -d , - e)
For C
C lies in Quadrant 4
Quadrant 4 = ( x , - y )
* add a negative sign to the y value of the given coordinate *
C = ( d, -e)
Determina el perimetro de las figuras geometricas que forman la rayuela
Perimetro: L=50 cm
Expresión:
Sustitucion:
P=_______/
La figura es un cuadrado y cada lado mide 50 cm
Answer:
2000cm
Step-by-step explanation:
Rayuela es un juego jugado por niños que se compone de 10 cuadrados.
Se nos da a partir de la pregunta anterior, la longitud del lado de un cuadrado = 50 cm
La fórmula para el perímetro de un cuadrado es 4a
Donde a = longitud del lado
El perímetro de 1 cuadrado =
4 × 50 cm
= 200cm
El perímetro de los cuadrados totales en la rayuela.
1 cuadrado = 200 cm
10 cuadrados = x
Multiplicar cruzada
x = 10 × 200 cm
x = 2000 cm
Por lo tanto, el perímetro de las figuras geométricas de una rayuela = 2000cm.
