Prove that cot 4x (sin 5x + sin 3x) = cot x (sin 5x – sin 3x).
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Related Questions
Name each angle in four ways. Then classify the angle as acute, right, obtuse, or straight.
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Answer:
∠ ABC∠CBA∠B∠1ObtuseHope this is helpful
....Could you please HELP me....
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Answer:
the answer is +4 because if you count it it is going up in fours
Cups cost x dollars each. Mugs cost (x + 2) dollars each. (a) Write down an expression, in terms of x, for the total cost of 12 cups and 6 mugs. ............................................................................... dollars (2) (b) The total cost of 12 cups and 6 mugs is 57 dolllars.
work out the cost of 1 cup
Answers
Answer:
a. [tex]18x + 12[/tex]
b. $2.50
Step-by-step explanation:
a. If there are 12 cups and 6 mugs, and one cup is x and 1 mug is x+2, then multiply to get 18x + 12
b. Use the previous equation 18x+12=57 to get your answer. First move the 12 over to change the 57 to a 45. Then divide 45/18 to get 2.50 as you answer.
2/5 part of the total number of students of a school are girls . If there are 240 boys, find the number of girls
Answers
Answer:
160 girls
Step-by-step explanation:
2/5 = girls
3/5 = boys
3/5 = 240
to find 1
240/3
80
2/5 = 160
arlene begins a test with a possible total of 80 points. she loses 2 points every questions she answers incorrectly.
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Answer: how many questions were incorrect? take that number and multiply it by 2. then subtract whatever u got from 80.
Step-by-step explanation:
Please I need answers for this one or two are fine
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Answer:
a:1100....b:11000....c:110000
Step-by-step explanation:
Answer: A= 1100
B= 11000
C= 110000
Step-by-step explanation:
If f(x) = x + 2 and g(x) = 3x +4, then (g°f)(x) = ?
A) 3x +6
B) 3x +10
C) 3x² + 6x +4
D) 3x² - 10x +6
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Answer:
B
Step-by-step explanation:
i need help on putting my students grades in online
Answers
Answer:
Coffee might help
Step-by-step explanation:
and a good rest and then some healthy salad :)
Plz plz plz help me !!!!!!!!!!!
Answers
Answer:
look at any notes, to bits at a time hope this helped!
Step-by-step , explanation:
=======================================================
Explanation:
"six subtracted from x" translates to "x-6"
So the word problem updates to "x-6 is less than -15"
Then we replace the "is less than" with "<" without quotes.
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Extra info: If you want to solve for x, then we add 6 to both sides like so
x-6 < -15
x-6+6 < -15+6
x+0 < -9
x < -9
So any number smaller than -9 will work in place of x.
Find the solutions to the equation 102x 11 = (x 6)2 – 2. which values are approximate solutions to the equation? select two answers. –9.6 –7.4 –4.6 –2.4 0.6
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The approximate soluton of the equation 102x + 11 = (x + 6)² – 2 is 0.6. Then the correct option is E.
What is a quadratic equation?It is a polynomial that is equal to zero. Polynomial of variable power 2, 1, and 0 terms are there. Any equation having one term in which the power of the variable is a maximum of 2 then it is called a quadratic equation.
The quadratic equation is given below.
102x + 11 = (x + 6)² – 2
Open square, we have
102x + 11 = x² + 12x + 36 – 2
x² – 90x + 23 = 0
By the formula, we have the value of x
[tex]x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}\\\\x = \dfrac{90 \pm \sqrt{(-90)^2}-4*1*23}{2*1}\\\\x = 89.74, 0.256[/tex]
The approximate soluton of the equation 102x + 11 = (x + 6)² – 2 is 0.6. Then the correct option is E.
More about the quadratic equation link is given below.
https://brainly.com/question/2263981
Answer:
A and D just did on edge
Step-by-step explanation:
Help!!!
x ≥ 4 if and only if 3x ≥ 12.
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Answer: If 3x ≥ 12 then x ≥ 4 is true.
But x can be greater than or equal to 4 in other conditions:
4x ≥ 16
-3x ≤ -12
Step-by-step explanation:
What is the length of PR?
A. 7
B. 8
C. 6
D. 9
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Answer:
C
Step-by-step explanation:
The triangles are similar by the AA postulate, thus the ratios of corresponding sides are equal, that is
[tex]\frac{AB}{PQ}[/tex] = [tex]\frac{AC}{PR}[/tex] , substitute values
[tex]\frac{20}{5}[/tex] = [tex]\frac{24}{PR}[/tex] ( cross- multiply )
20PR = 120 ( divide both sides by 20 )
PR = 6 → C
A birdhouse and the pole that it is on cast a shadow 15 feet long. If a person standing nearby casts a shadow 5 feet long, and the person is 4 feet tall, how tall are the birdhouse and the pole? How do you put this in ratio form??
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12
Step-by-step explanation:
15 feet total amount combined by pole and
birdhouse
4 foot tall person makes 5 feet long shadow
5×3=15
4x3=12 so the birdhouse and pole are 12 feet
(x + 5)(5 + x)
is this a perfect square
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Answer:
NO this isn't a perfect square
Step-by-step explanation:
32/w=4/12 on proportions on get more math
Answers
Answer:
w=96
Step-by-step explanation:
4x8= 32 so 12x8= 96 therefor it is 32/96
In the drawing below, QS bisects ZPQR,PO = 9 units, PS4 units, and RS-3 units.
What is OR in units?
O A 21
O B. 12
O C. 8
o D. 6 3/4
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9514 1404 393
Answer:
D. 6 3/4
Step-by-step explanation:
The angle bisector divides the sides proportionally:
QR/PQ = RS/PS
QR = PQ×RS/PS = 9×3/4
QR = 6 3/4
Simplify this equation 8x-4+6x+15
Answers
Answer:
14x + 11
Step-by-step explanation:
Collect all the like terms together.
Positive 8x and positive 6x both have an x so after adding them together you get 14x. Negative 4 and positive 15 are also like terms so after adding them together you get positive 11.
The final answer being 14x + 11
Answer:
14x + 11
Step-by-step explanation:
8x - 4 + 6x + 15 =
8x + 6x + 15 - 414x + 15 - 414x + 11simplify this equation is 14x + 11
(asin θ-bcos θ)²=?
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[tex](a\sin(\theta) - b\cos(\theta))^2\\= a^2\sin^2(\theta) - 2ab\sin(\theta)\cos(\theta) + b^2\cos^2(\theta)\\= a^2\sin^2(\theta) - ab\sin(2\theta) + b^2\cos^2(\theta)[/tex]
A skier is trying to decide whether or not to buy a season ski pass. A daily pass costs $74. A season ski pass costs $350. The skier would have to rent skis with either pass for $25 per day. How many days would the skier have to go skiing in order to make the season pass less expensive than the daily passes?
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Answer:
5 days
Step-by-step explanation:
On 5 days the daily pass would cost $495 while the season past would cost $475.
Make a number line and mark the points that represent the following values of x. 5x<12
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Answer:
The answer is: x < 2.4
Step-by-step explanation:
5x < 12
If we divide both sides by 5, we get an equation like this:
x < 12/5
Then we can convert that fraction to a decimal and we get this!
x < 2.4
Finally, in order to draw it on the number line, we need to do this:
Find 2.4 on the number line, then draw an open circle on that 2.4. Then, attach an arrow going from that circle all the way to the left of the number line! The circle and arrow represents the fact that "x" is not equal to 2.4, but it is smaller. If it was equal to 2.4 or smaller, then the open dot would have to be a closed dot!!!!
17 divivded by 5214 answer
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Answer:
0.0032604526275412351361718450326
Step-by-step explanation:
17 divided by 5214 is 0.0032604526275412351361718450326
Hope I helped :)
Please consider Brainliest :)
Answer:
306.705882353
Step-by-step explanation:
Find the slope of the line that passes through (5, –6) has a y-intercept of –16.
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Answer:2 I think
Step-by-step explanation:
(5,-6) (0,-16) -16- -6/0-5 = -10/-5 = 2
At this rate how long will it take the plane to land? Fill in the blank.
The plane will land in ________ minutes.
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A farmer needs to purchase a rainwater harvesting tank and is deciding on the shape. He needs a tank that can hold at least 90 cubic feet of water. Select all the tanks that have a capacity of at least 90 cubic feet.
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Answer:
Tank A and Tank D
Step-by-step explanation:
Got it right
The tanks that have the capacity more than 90 cu.ft is Tank A and C.
What is Volume?Volume is the amount of space occupied by a three dimensional object, it is represented in cubic units.
The volume of a Cylinder is given by
V = πr²h
The Volume of a Cone is given by
V= πr²h/3
The volume of the composite figure in Tank A and D,
Volume = Volume of cylinder + Volume of Cone
Tank A :
Volume = πr²h + πr²h/3
Volume = ( π * 2.5² * 4 ) + ( π *2.5² *2 )/3
Volume = 91.58 cu.ft
Tank B :
Volume = πr²h/3
Volume = π * 4² *5 /3
Volume = 83.7 cu.ft
Tank C
Volume = πr²h
Volume = π * 2² * 6
Volume = 75.36 cu.ft
Tank D:
Volume = πr²h + πr²h/3
Volume = π * 3²*3 + π *3²* 3 /3
Volume = 113.04 cu.ft
To know more about Volume
https://brainly.com/question/1578538
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Working alone, it takes Chelsea 13 hours
to tar a roof. Ashley can tar the same roof
in 9 hours. How long would it take them
if they worked together?
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Answer:
24 hours
Step-by-step explanation:
hoped this helped
Need help asap giving 15 points!!
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Answer:
15
Step-by-step explanation:
its a 4x4 so 16 but you subtract the area of the small square that is covering it which is 1 so 16-1 = 15
PLESE ANSWER NUMBER 8 ASAP !!!!!
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Answer:
the first one
Step-by-step explanation:
18d+6e what is the awnser
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Answer:
6(3d+e)
Step-by-step explanation:
Huilans age is two times Thomas’s age. The sum of their age is 15. What is Thomas age? (Please help!)
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Answer:
huilans age is 10 and thomas is 5. 5 is half of 10, and 5 and 10 add together to make 15
Step-by-step explanation:
dont ask for working because i dont know what working to write :(
Could somebody help me understand how to solve this to find how many solutions there are?
Answers
Answer:
Exactly one solution.
Step-by-step explanation: