Which of the following is not an identity?
O A. 2cos2x-1 = 1 - 2sin2x
O B. secx cscx(tanx + cotx) = sec2x + csc2x
O C. 2sin?x- sinx = 1
D. sin2x + tan2x + cos2x = secax
Answer:
C. 2 sin^2x-sinx=1
Step-by-step explanation:
a p e c
2sin^2 - x - Sinx =1 and sec x csc x (tanx+ cotx) = sec^2x + csc^2x is not an identity. Option B and C is correct.
Out of Four options are given, which of them is not an identity is to be determined.
What is identity?An identity is the common case formula that helps to solve mathematics.
1)
[tex]2cos^2x-1 = 1 - 2 sin^2x\\ \\cos2x =cos2x[/tex]
It is also a perfect identity.
2)
[tex]secx cscx(tanx+ cotx) = sec^2x + csc^2x\\\\\\sec x cscx (sinx/cos x + cosx/sinx) = sec^2 + csc^2x\\\\secx cscx (sin^x+cox^2x/cosxsinx) = sec^2x +csc^2x[/tex]
It is also not an identity.
3) 2sin^2-X- Sinx=1
It's not an identity cause it is form of equation and contain -x.
4)
[tex]sin^2x+ tan^2x + cos^2x = sec^2x\\ sin^2x + cos^2x = sec^2x -tan^2x = 1[/tex]
It is a perfect identity.
Thus, 2sin^2- x - Sinx =1 and sec x csc x (tanx+ cotx) = sec^2x + csc^2x is not an identity. Option B and C is correct.
Learn more about identity here:
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simplify the following expression 2[(7-3)^4 divided by 8] SHOW YOUR WORK!
someone pls help
Answer:
64
Step-by-step explanation:
2(7-3)^4 divided by 8
2(4)^4 divided by 8
2(256) divided by 8
512 divided by 8
64
Answer:
64
Step-by-step explanation:
2[(7-3)^4 divided by 8]
2[4^4 divided by 8]
2[256 ÷ 8]
2(32)
64
what is the area of the parallelogram
A. 11in2
B. 22in2
C. 45in2
D. 60in2
Answer:
Step-by-step explanation:
Area of a parallelogram is base times height. So 15x4
It’s 60in^2
So D
Answer:
D. 60 inches^2
Step-by-step explanation:
The area of a parallelogram can be found using:
a=bh
We know that the height is 4 inches, and the base is 15 inches. Therefore, we can substitute 4 in for h and 15 in for b.
a=4*15
Multiply 4 and 15
a=60
Area is always units^2. We know the units are inches, therefore the area is:
60 inches^2, or choice D
Mary delivers 32 newspapers to her customers in 25 minutes. These deliveries represent 64% of her customers.
How many customers does Mary have?
16
20
50
57
So the right answer is 50
Look at the attached picture
Hope it will help you
Good luck on your assignment
Answer: 50,
Step-by-step explanation:
64/100x = 32
X = 32 /0.64
Use the Means-Extremes Property to solve for x. 57 =9x x =
Answer:
x = 12.6
Step-by-step explanation:
When you have one fraction equated to another one, the means-extremes property allows you to cross multiply, as follows:
[tex]\frac{a}{b} = \frac{c}{d} [/tex]
can be rewritten as:
a*d = c*b
For this case:
[tex]\frac{5}{7} = \frac{9}{x} [/tex]
5*x = 7*9
x = 63/5
x = 12.6
Which line segment is a diameter of T?
Answer:
[tex] \overline{UZ}[/tex]
Step-by-step explanation:
[tex] \overline{UZ}[/tex] is passing through the center of the circle with center T. Therefore [tex] \overline{UZ}[/tex] is the diameter
Answer:
Line UZ
Step-by-step explanation:
This is Beacause Line UZ passes thru T which is the center of the circle.
The diameter is the length of the line through the center that touches two points on the edge of the circle.
Hope it Helps, Pls Mark as Brainliest!!
1 Beverly investe $18,000n an account that pays 5% annual simple interest. Beverly win
not make any additional deposits or withdrawals. How much interest Will Beverly earn on
her investment at the end of 5 years
Answer:
She'll earn $4973.07 coming to an amount of $22,973.07
Step-by-step explanation:
URGENT PLEASE HELP
Points j and k, plotted on the coordinate grid, are 2 vertices of rectangle j,k,l,m. Rectangle j,k,l,m has an area of 7 square units. Point j is located at (2,1) and point k is located at (-5,1) each vertex of the rectangle is located at a point that had integer coordinates. Which could be another vertex of the rectangle?
A: (-5,0)
B: (-5,2)
C: (1,1)
D: (2,-6)
E: (2,0)
F: (9,1)
G: (2,2)
Answer:
16 square unitsStep-by-step
Step-by-step explanation:
find: (6m^5+3-m^3-4m)-m^5+2m^3-4m+6)
PLEASE HURRY!
Answer:
The answer is 7m5 - 3m3 - 3
Answer: 7m^5-3m^3+0m-3
Step-by-step explanation:
I just did the problem and got the correct answer. Note that this answer only applies to this exact question the correct answer to the equation is 7m^5-3m^3-3.
Please help picture included!!
Use the circle to answer the question.
The formula to find the circumference of a circle is C = 2xr. Use 3. 14 for a.
4 in.
What is the approximate circumference of the circle?
A. 6.3 in.
B. 9.1 in.
C. 12.6 in.
D. 25 in.
E. 50.2 in.
o
What's the equation of the line that's a perpendicular bisector of the segment connecting A (–2, 8) and B (–4, 2)?
Question 12 options:
A)
y = –1∕3x – 3
B)
y = –1∕3x + 3
C)
y = 1∕3x + 3
D)
y = –1∕3x + 4
Answer:
D
Step-by-step explanation:
The required line is perpendicular bi sector. So it goes through the midpoint of AB. Find the midpoint of AB
Midpoint [tex](\frac{x_{1}+x_{2}}{2} , \frac{y_{1}+y_{2}}{2})\\[/tex]
Midpoint of AB = [tex](\frac{-2 + [-4]}{2} , \frac{8+2}{2})[/tex]
[tex]=(\frac{-6}{2} , \frac{10}{2})\\\\=(-3 , 5)[/tex]
Find the slope of AB, [tex]m_{1}[/tex]
slope = [tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\\\[/tex]
[tex]=\frac{2 - 8}{-4-[-2]}\\\\=\frac{-6}{-4+2}\\\\=\frac{-6}{-2}\\\\=3[/tex]
Slope of the perpendicular line to AB = [tex]\frac{-1}{m_{1}}[/tex] = -1/3
The required line passes through (-3, 5) and has slope -1/3
Equation of required line : y - y1 = m (x -x1)
[tex]y - 5 = \frac{-1}{3} (x - [-3])\\\\y-5=\frac{-1}{3} ( x +3)\\\\y-5=\frac{-1}{3}x + 3 *\frac{-1}{3}\\\\y-5=\frac{-1}{3}x-1\\\\y=\frac{-1}{3}x-1+5\\\\y=\frac{-1}{3}x + 4[/tex]
Answer:
Step-by-step explanation:
D)
y = –1∕3x + 4
pls helppp
The slope of the line segment joining the points (2, 3) and (2, -6) is undefined.
a)True b) False
Answer:
True
Step-by-step explanation:
The points (2,3) and (2,-6) are undefinable because it makes a vertical line. The slope cannot be defined.
Kim's furniture store is offering a 40% discount on all its armchairs. Using a proportion, find the discount of the price of an armchair that originally cost $489.00. A. $489.40 B. $190.71 C. $195.60 D. $293.40
Answer:
Your answer is C.
Step-by-step explanation:
[tex]\frac{40}{100} = .4[/tex]
To find the the discount, you need to multiply the original price by the percentage.
[tex]489 *.4 = 195.6[/tex]
The discount of the chair would be [tex]195.6[/tex]
Your watch stops at 4 PM on Monday. How many hours and minutes would it be off at 5:30 PM. Tuesday?
Answer:
25 1/2
Step-by-step explanation:
Answer:
1530 minutes
Step-by-step explanation:
1440 =24 × 60
90= 1.5×60
1440+90=1530
Ben makes $39,600 a year. What the maximum amount he can afford for a mortgage each month ?
Answer:825
Step-by-step explanation:
What is the value of the expression when n = 3?
-2n(5+n - 8 -3n)
Answer:
54
Step-by-step explanation:
Answer:54
Step-by-step explanation:
-2(3)(5+3 - 8 -3(3)=54
Hope I helped:D
Please help with this
Answer:
B
Step-by-step explanation:
I used the quadratic formula
Answer:
B
Step-by-step explanation:
Given
(x + 5)² = 48 ( take the square root of both sides )
x + 5 = ± [tex]\sqrt{48}[/tex] = ± [tex]\sqrt{16(3)}[/tex] = ± 4[tex]\sqrt{3}[/tex] ( subtract 5 from both sides )
x = - 5 ± 4[tex]\sqrt{3}[/tex] → B
math question down below
Answer:
A.
C.
E.
Step-by-step explanation:
Answer:
a,c,e
Step-by-step explanation: because they all ad up to 24
2. Find the value of x.
BI
3(x + 2)
24
Ox=6
Ox=10
3(x+2
Ox= 24
3x + 6
Ox=8
3x +
Answer:
x = 6
Step-by-step explanation:
3(x + 2) =24
Divide each side by 3
3/3(x+2) = 24/3
x+2 = 8
Subtract 2 from each side
x+2-2 = 8-2
x = 6
Solve for x.
-30 = 5(x+1)
Answer:
−30=5(x+1)
Step 1: Simplify both sides of the equation.
−30=5(x+1)
−30=(5)(x)+(5)(1)(Distribute)
−30=5x+5
Step 2: Flip the equation.
5x+5=−30
Step 3: Subtract 5 from both sides.
5x+5−5=−30−5
5x=−35
Step 4: Divide both sides by 5.
5x5=−355
x=−7
Answer:
x=−7
Answer:
x = -7
Step-by-step explanation:
Since this problem has the distributive property, we can simplify the problem.
-30 = 5x + 5
Now we have to subtract 5 from both sides because of the +5.
-35 = 5x
To find the answer, we have to move all the real numbers to one side, the variable on the other. To do this, we can simply divide both sides by 5.
-7 = x
x = -7
Which of the following is an example of inertia?
O A. Adding mass to a moving car makes it
harder to stop.
0 0 0
OB. A balanced force is applied to a bicycle.
C. Increasing the velocity of a train makes it
harder to stop.
OD. A moving car changes direction.
Answer:
B
Step-by-step explanation:
inertia is the tendency to do nothing or remain unchanged
The population of browns burg is 25000. In ten years, it is expected to grow by 8.5%. How many people will live there in ten years?
m = 0.25k + 5
OLinear Function
O NON-linear Function
Answer:
OLinear Function
Step-by-step explanation:
In general ,A linear function has the form y = ax + b
so ,the function :
m = 0.25k + 5 is linear .
We just changed
m to y
x to k
a to 0.25
b to 5
Help please
0.3 [. ] 0.4
What is the decimal
<,> or =
I really need help and I would greatly appreciate it
Answer:
a. 15.783/19 × 100% = 15.78
b. 7
12-5 = 7
To find the range, first order the data from least to greatest. Then subtract the smallest value from the largest value in the set.
c. 8
because 8 divides the age group making half the people younger than this age and half are older
2 . a - highest point is 8.7
c . georgina did better then half of the other gymnists which can be seen because the highest point is 8.7 where there are many who 7.7
mark brainliest pls
Again can someone help me with this i need a good explanation to find the arithmetic mean? and the answer ;-;
Answer:
4.1
Step-by-step explanation:
Mean = sum/n
(1+2+10+6+4+4+6+3+1+4)/10
41/10
4.1
The lifespans of tigers in a particular zoo are normally distributed. The average tiger lives 22.4 years; the standard deviation is 2.7 years. Use the empirical rule (68-95-99.7%) to estimate the probability of a tiger living less than 14.31 years.
Answer:
ok
Step-by-step explanation:
Andy made a spirometer for a physics experiment. The spirometer is designed to measure the volume of air in a person's lungs. Andy found that when he breathes normally, he inhales and exhales 0.5 of a liter of air per breath. He also found that when breathing normally, after exhaling, he still has 2 liters of air in his lungs.
Andy recorded 15 breaths in one minute, starting at the beginning of an exhale.
If Andy inhaled and exhaled the exact same amount of air in each breath, which of the following functions best models the amount of air in Andy's lungs t seconds after he started recording?
A(t)=0.25cos(x/2 2)+2.25
A bowling alley charges $3 per shoe rental and $4 per person per game. If you and a friend bowl 3 games and each rent a pair of shoes, how much will it cost in all?
Answer: $36
Step-by-step explanation:
3 times 2 times 2 = 12
4 times 2 times 3 = 24
add 12 and 24
answer = $36!
Use the order of operations to evaluate the expression. 4 × ( 3 4 − 1 2 ) + 3 × 6 A. 19 B. 20 1 2 C. 24 D. 33
Answer:
106
Step-by-step explanation:
4 × ( 3 4 − 1 2 ) + 3 × 6
PEMDAS
Parentheses first
4 × ( 22 ) + 3 × 6
Multiply next
88 +18
Add
106
Answer:
the answer is: A. 19
Step-by-step explanation:
I think he or she was trying his or her best or they might not understand favorite and rate for them
