Help me..
prove it
Tan20°×tan40°×tan60°=3
Answers
Answer:
Tan20°×tan40°×Tan60°=3
Tan60×tan40°tan20°)
√3((2tan20°)/(1-tan²20))tan20
√3(2tan²20/(1-tan²20°)
2√3((sin²20/cos²20)/((cos²20-sin²20)/cos²20))
2√3(sin²20/(cos²20-sin²20))
2√3(sin²20/(1-2sin²20)
2√3sin²20/2cos²40
√3
Related Questions
Please help with this one
Answers
The answer will be A-1188 in²
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We may rule Brainly with Bob as our leader
What is AC? Brainiest for answer
Answers
Answer:
air conditioning
also, "all clear" on a calculator
Step-by-step explanation:
What rotation is shown below?
Answers
Answer:
90 around the origin
Step-by-step explanation:
Here is the answer
Tremaine scored 54 three-point goals, 84 two-point field goals, and 106 free throws in 23 games. How many points did he score on average per game
Answers
Answer: 18.96
Step-by-step explanation:
From the question, Tremaine scored 54 three-point goals, 84 two-point field goals, and 106 free throws. The total point scored will be:
=(54 × 3) + (84 × 2) + (106 × 1)
= 162 + 168 + 106
= 436 points
The number of points scored on average per game will then be:
= 436 / 23
= 18.96 points per game
The graphs below have the same shape. What is the equation of the red
graph?
Answers
Solve and reduce to lowest terms:
5x2/7
Answers
Answer:
10/7
Step-by-step explanation:
5*2/7=10/7
Answer:
10/7 or 1 3/7
please help!! i need this asap
Answers
I would help but I cannot read it.
The ratio of men and women at a class is 6 to 5. how many women are their if their are 3600 men?
Answers
Answer:
3,000
Step-by-step explanation:
6:5
1.2( divided 6 by 5):1 (Divide 5 by 5)
3600 divided by 1.2
3,000
Find the value of both variables. Round to the nearest tenth.
30
w
45
44°
to
w=
type your answer...
degrees; x= type your answer...
degrees
Answers
W=~20.8
X=~62.5 degree
Solution:
Soh, Cah, Toa
[Left Triangle] 30=hypotenuse, W=opposite
Sin(angle)=o/h
Sin(44)=W/30
Sin(44)*30=W
W=20.8
[Right Triangle] W=20.8=adjacent, 45=hypotenuse
Cos(x degree)=a/h
Cos(x)=20.8/45
x=arc cos (20.8/45)
x=62.5
Write the equation of the line graphed below
Answers
Answer:
y = 5/8x + 12
Step-by-step explanation:
Slope = change in y/change in x
slope = 5/8
Using y = mx + b find b.
y = 5/8x + b
-2 = 5/8(-4) + b
b = 1/2
y = 5/8x + 12
good luck, i hope this helps :)
lolololololololol
help me ya'll so i can go to bed! (slopes) (brainliest)
Answers
Answer:
i dont know
what you wanna know
Step-by-step explanation:
Identify the coordinates (x₁,y₁) and (x₂,y₂). We will use the formula to calculate the slope of the line passing through the points (3,8) and (-2, 10).
Input the values into the formula. ...
Subtract the values in parentheses to get 2/ (-5).
Simplify the fraction to get the slope of -2/5.
Go to sleep this is a lullaby slopes slopes slopes over here over there slopes everywhere.
thx for points
Jan is making dinner. She uses 25 lbs of carrots in soup. She uses 3 of carrots in salad. About how many pounds of carrots did lan use in all?
Answers
Answer:
28 pounds of carrots.
Step-by-step explanation:
25+3=28
You are in charge of designing your soccer team’s shirts and have narrowed it down to two companies. Master Ink has a flat rate of $35 and charges $12 for each t-shirt printed. Totally Tee has a flat rate of $55 and charges $8 for every t-shirt.
Answers
Answer:
Step-by-step explanation:
Since there official question included with this, here is both equations and the point at which they equal the same amount.
Let x be every t-shirt printed.
Master Ink: 35+12x
Totally Tee: 55 + 8x
The point of which both equals the same (no matter how many shirts you buy) means that Master Ink = Totally Tee, therefore:
35+12x = 55+8x Solve
4x=20
x = 5
For the cost from both companies to be the same, you can buy 5 shirts. I would recommend Master Ink if you want to buy 5 shirts or less, and Totally Tee, for 5 shirts or more if you want to buy the cheapest offer.
HELP. Pleaseee. I have no idea what this means.
Answers
Answer:
2
Step-by-step explanation:
roots are the intercepts at the x axis I believe
what is the simplest form of 60 : 120?
Answers
Answer:
1 : 2
Step-by-step explanation:
60 is 60 x 1, and 120 is 60 x 2
Help! Please! I need help
Answers
since it goes up by 4 you would add the previous number (9) and 4 getting 13
If a person's speed doubles and all else remains the same, what will be the person's angular momentum
Answers
Answer:
The person's angular momentum will be double
Step-by-step explanation:
Let
Speed of person=v
Mass of person=m
Radius=r
Speed of person=2v
We have to find the person's angular momentum when the speed of person is double and all else remains same.
We know that
Angular moment ,L=mvr
Using the formula
Angular momentum of person when speed 2v
L'=m(2v)r
[tex]\frac{L'}{L}=\frac{m(2v)r}{mvr}=2[/tex]
[tex]L'=2L[/tex]
Hence, the angular moment of person will be double when the speed of person is double.
I have a D in math and need to bring my grade up!! Please help!! 32 pts!!!!
Answers
help me with this if you can
Answers
Answer:
y = 1/2x + 7
Step-by-step explanation:
this is it in slope-intercept form hope it helps
(sorry if its wrong)
Gabby has $1,506 in a savings account that pays 2.5% simple interest. How much interest will she earn in 3 years?
Answers
Answer:
$112.95
Step-by-step explanation:
Use the simple interest formula, I = prt
Plug in the initial amount, interest rate, and number of years
I = prt
I = (1506)(0.025)(3)
I = 112.95
So, the interest created in 3 years is $112.95
I = (1506)(.025)(3)
I = 37.65 (3)
I = $112.95
30-60-90 triangle.. find the value of x?
Answers
what does a⁵×a³ equal?
Answers
Step-by-step explanation:
[tex] {a}^{5} \times {a}^{3} \\ = {a}^{5 + 3} \\ = {a}^{8} [/tex]
Hope it will help :)
Answer:
a⁵×a³=a⁸
because if base is same than the exponents can add
.
Enter the number that belongs in the green box,
Please helppp
Answers
Select all the equations that are equivalent. 52 = 8n + 4 4(2n + 1) = 52 4 = 52 – 8n 4n = 48 n = 6
Answers
Answer:
52 = 8n + 4
4(2n + 1) = 52
4 = 52 – 8n
n = 6
Step-by-step explanation:
52 = 8n + 4
52 - 4 = 8n
48 = 8n
n = 48/8
n = 6
4(2n + 1) = 52
8n + 4 = 52
8n = 52 - 4
8n = 48
n = 48/8
n = 6
4 = 52 – 8n
4 - 52 = -8n
-48 = -8n
n = -48/-8
n = 6
4n = 48
n = 48/4
n =12
n = 6
52 = 8n + 4 is equivalent to 4(2n + 1) = 52 is equivalent to 4 = 52 – 8n is equivalent to n = 6
A ruler costs pence.
A pen costs 10 pence more than the ruler.
Write an expression, in terms of , for the total
cost of 3 pens and 2 rulers.
Answers
Answer:
2x+3(10+x)
Step-by-step explanation:
I'm not sure but I think this might be the answer
A cylindrical juice glass is 8 centimeters tall and has a radius of 3 centimeters. If the glass is full, which of the following is closest to the volume of the filled portion? A) 28 cm C) 170 cm B) 226 cm D) 98 cm PLEASE HELP!
Answers
Answer:
226
Step-by-step explanation:
You first have to find the volume of the cylinder, which you would do 3 squared, which is 9, times 8, which is 72, and then times pi, which gives you 226.1946711. Since they want the closest volume to that number, it would just be 226. If you are confused on the equation, the equation for the volume of a cylinder looks like this: [tex]V=\pi(r^{2})(h) \\[/tex], where r is the radius and h is the height.
can someone please tell me the answer?
Answers
how to do please help
Answers
Answer:
715.5
Step-by-step explanation:
The formula is A=1/2 b*h
so, b*h = 53*27 = 1431
Divide by 2 and the answer is 715.5
Hope this helps :)
define nature
have a great day
Answers
Answer:
Nature : The phenomena of the physical world collectively, including plants, animals, the landscape, and other features and products of the earth, as opposed to humans or human creations. (according to Oxford Dictionary)
what is the answer to 4(d+7);d= -2
Answers
Answer:
20
Step-by-step explanation:
4(d+7)
Let d= -2
4 ( -2 +7)
Parentheses first
4( 5)
Multiply
20