MATHEMATICS MIDDLE SCHOOL

Anybody know the right answer?

Answers

Answer 1

Answer:

Quadrant I : cot(x) > 0 → -cot(x) < 0

Quadrant II : cot(x) < 0 → -cot(x) > 0

Quadrant III : cot(x) > 0 → -cot(x) < 0

Quadrant IV : cot(x) < 0 → -cot(x) > 0

------------------------------------------------------------------

$a)\ \left((11\pi)/(6),\ -\sqrt3\right)\n\n(11\pi)/(6)\in\text{Quadrant IV, then -cot(x)} > 0,\ \text{we have}\ -\cot(11\pi)/(6)=-\sqrt3 < 0$

Answer: a)

$b)\n(2\pi)/(3)\in\text{Quadrant II},\ -\cot(x) > 0,\ \text{we have}\ (\sqrt3)/(3) > 0\n\nc)\n(5\pi)/(4)\in\text{Quadrant III},\ -\cot(x) < 0,\ \text{we have}\ -1 < 0\n\nd)\n(4\pi)/(3)\in\text{Quadrant III},\ -\cot(x) < 0,\ \text{we have}\ -(\sqrt3)/(3) < 0$

We know that one answer is only true, so we did not check the correctness of the cotangent value, only to the number sign

Related Questions

Find the additive inverse of −5 + 7i.
What is 5/8ths of 48 , I need help I really don't get it
How do you change 36/10 to a decimal?
5) determine which lines if any, are parallel or perpendicular.Line a: y=3/5x+1 Line b: 5y=3x-2 Line c: 10x -6y =-4
PLZ ASAP WITH work and solution

35% of what number is 17

Answers

Let the no be "a"
35/100*a = 17
35a=1700
a=1700/35=48.57(approx)

Let the number be x
35% of x= 17
(35/100) * x=17
(7/20)x = 17
7x = 17*20
x= 340/7
x = 48.57

Terry earned $3814 in gross pay over the last 2 weeks. How much income tax will be withheld from his paycheck this pay period? Use the table to answer the question. NEEEED HELLP ASAPPP

Answers

$1,890 is the best answer

The cloth shop has announced a reduction in price by 25%. How many shirts priced at Rs 28 should buy to avail a total reduction of at least Rs 40?

Answers

Answer:

At least 6 shirts should be brought to avail a total reduction of Rs 40.

Step-by-step explanation:

The marked price of each shirt = Rs 28

Discount offered = 25%

So, 25% of marked price 28 = $(25)/(100) * 28 = 7$

⇒Reduction on each shirt is Rs 7

Now, total amount reduction needed = Rs 40

So, number of shirts purchased = $\frac{\textrm{Total reduction needed}}{\textrm{Reduction on each shirt}}$

= 40 Rs /7 Rs = 5. 71 ≈ 6

So, at least 6 shirts should be brought to avail a total reduction of Rs 40.

write an equation to determine the area of each rectangle , then find the area. 1. 19 ft 11 ft 2. 18.3 cm 5.9 cm 3. 5.27 m 10 m

Answers

1. 19×11=209 cm^2 2. 18.3×5.9=107.97 ft^2 3. 5.27×10= 52.7 m^2 Area= length times width

A.
Which diagram shows 1 and 2 as vertical angles? A,b,c or d?

Answers

C. Vertical angles are the angles on opposite sides of intersecting lines.

The data in the table represents a company's profit based on the number of items produced.Which equation best represents the data?

A) y= -1.026x^2 + 1016.402x - 162075

B) y= -1.036x^2 + 1024.771x - 163710

C) y= 298.214x - 66317.667

D) y= 196.2x - 18710

Answers

Answer:

(A) y= -1.026x^2 + 1016.402x - 162075

Step-by-step explanation:

Given is the data 'x' -Items produced. The equation that satisfies the given data can be found by simply substituting the values of x in the given equations. For example:

Substituting the value of x= 100 in the given equations,

A) y= -1.026(100)^2 + 1016.402(100)-162075= -70,500

Similarly you can check the values on the rest of the equations and if they satisfy the equation, then the given is the required equation.

Answer:

(A)

Step-by-step explanation:

WE are given the data which represents the company's profit based on number of items produced.

The equation which best represents the data can be found out by substituting the values of x in the given equations.

So,substituting x=100 in first equation, we have:

$y=-1.026x^(2) +1016.402x-162075$

$y=-1.026(100^(2))+1016.402(100)-162075$

$y=-10260+101640.2-162075$

$y=-70500$

which satisfies the equation. Hence, option A satisfies.

We can also substitute the different values of x in the equations to check whether it satisfies or not.

Other Questions

PLEASE HELP WITH MATH. BEST GETS BRAINLIEST.Celina is buying fabric scraps to make koozies for her glasses. Each glass is cylindrical with a diameter of 3 inches and a height of 4 inches. The koozies will cover only the sides of the glasses. What is the amount of fabric she will use? What does this amount represent? Use 3.14 for pi. Show your work.

Is Sand smaller than salt

The equation y = 14x represents the number of pages Printer A can print over time, where y is the number of pages and x is time in minutes. This table shows the number of pages Printer B can print over time.How many pages does each printer print per minute, and which printer prints at a faster rate?Complete with the correct statements.- Printer A prints 12, 14, 16 or 48 pages per minute.- Printer B prints 12, 14 16, or 48 pages per minute.- The printer that prints at a faster rate is Printer A or B.Printer BTime (min) Pages Printed3 485 808 12812 192

A penguin can dive 48 meters below the surface of the water to reach a fish. It dives 2% of the total depth every 1 second.