Answers
Answer:
1512cm is the answer.
Step-by-step explanation:
Related Questions
Given sin^2 x = (1 - cos(2x))/2 Prove: sin(x/2) = plus/minus sqrt((1 - cos(x))/2) Prove Complete the steps of the proof
Answers
Answer:
1. half angle
2. x
Step-by-step explanation:
The missing parts of the proof is the variable x.
What are Trigonometric Functions?Trigonometric functions are those functions which are the ratio of the sides of a right angled triangle.
Given,
sin² (x) = [1 - cos (2x)] / 2
We have to prove sin ([tex]\frac{x}{2}[/tex]) = ± [tex]\sqrt{\frac{1-cos (x)}{2} }[/tex]
First, we have
sin² (x) = [1 - cos (2x)] / 2
Substituting x/2 in place of x, we get,
sin² (x/2) = [1 - cos (2x/2)] / 2
sin² (x/2) = [1 - cos (x)] / 2
sin² ([tex]\frac{x}{2}[/tex]) = [tex]{\frac{1-cos (x)}{2} }[/tex]
Taking square root on both sides,
sin ([tex]\frac{x}{2}[/tex]) = ± [tex]\sqrt{\frac{1-cos (x)}{2} }[/tex]
Hence it is proved.
Learn more about Trigonometric Functions here :
https://brainly.com/question/6904750
#SPJ2
The perimeter of a rectangle is 20 feet. The width is 4 feet less than the length. Find the dimensions of the rectangle. Then find its area.
Answers
Answer:
length = 7 ft
width = 3 ft
area = 21 sq ft
Step-by-step explanation:
let l = length
let l - 4 = width
2l + 2(l - 4) = 20
2l + 2l - 8 = 20
4l = 28
l = 7
w = 3
Area: 7 x 3 = 21
What is 2 7/12 written as a decimal?
OA) 0.2583
OB) 2.583
C) 2.583
OD) 5.83
Answers
Answer:
its 2.583333333 and repeating so it would be 2.583
What is the solution set of the equation?
[tex]\sqrt{x} -18+9x=x[/tex]
Answers
9514 1404 393
Answer:
x ∈ {2.07014981016}
Step-by-step explanation:
The equation can be rewritten as ...
√x = 18-8x
x = 324 -288x +64x²
64x² -289x +324 = 0
x = (289 ±√577)/128 ≈ {2.07015, 2.44548}
Since √x must be positive, we know that ...
18 -8x ≥ 0
x ≤ 18/8 = 2.25
The larger of the above solutions is extraneous, so the solution set is ...
x ∈ {(289 -√577)/128} ≈ {2.07015}
you are correctyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy
Answers
Answer:
yayyy
Step-by-step explanation:
Answer:
Aww Thanks :)
Step-by-step explanation:
PLSSS PLSSS HELP! After an injury, Greg's doctor advises him to slowly build up to his regular workout schedule, adding a certain number of minutes to his workout time each week. According to his doctor's advice, Greg should work out for 25 minutes in week 3 and 47.5 minutes in week 6. A. For how many minutes should Greg work out in week1? How many in week 10? B. For how many minutes should Greg workout in week n? Explain your answer. Make sure to include the arithmetic sequence that can be used to find out how many minutes agree should work out in week n. Show your work.
Answers
Answer:
Week 1: 10 Minutes
Week 10: 77.5 Minutes or 1 hour and 17.5 Minutes
Week n: 10 + 7.5n
Step-by-step explanation:
Every week, Greg adds another 7.5 minutes to his workout time. Week 1 starts off with 10 minutes and continuously adds 7.5 minutes until he gets to week three, which 10 + 7.5(2) = 25 minutes.
If point M (4, 6) is rotated 90 degrees clockwise around the origin, what are the coordinates of the copy for point M?
Answers
Answer:
6,-4
Step-by-step explanation:
The new position of point M (h, k) will become M’ (k, -h).
Answer:4,-5
Step-by-step explanation:
What is |-8/?
1-16
-8
8
16
Answers
A test is 45 minutes long. There are 3 sections of the test that each take an equal amount of time. How many minutes m is each section of the test? Write an equation to represent the number of minutes for each section.
Please help me
Answers
Answer:
15
Step-by-step explanation:
Answer:
each section takes 15 minutes long
Step-by-step explanation:
An equation you can use to get this is 45 ÷ 3 = x
x = 15
so the answer to the equation would be 45 ÷ 3 = 15
Write an equation of a line that has an x-intercept of -2 and a y-intercept of 6.
Answers
Answer:
y=6x+4.
Step-by-step explanation:
y=mx+b
m=6. b=4.
please help me i really need help please
Answers
Answer:
no
Step-by-step explanation:
no
if there are only 2 of a particular stamp remaining out of 5000 originally printed, what percent remains today?
Answers
5th grade math. correct answer will be marked brainliest.
Answers
Answer:
DBCWBSHCHCVGCHWYEFDWEXBSAJNWUGDIHVBSYXVP VDXCBBVXBSGGSHYSXULSOOSKBHSOLSHOLSFHOJDKFIHEJIFWUGUJH
Step-by-step explanation:
2/3=2/3x1/2=3/2
3/4=3/4x2/3=3/4
lmk if I’m right or wrong pls
A 4-foot-long sandwich is cut into servings that are each ; foot long. How many servings will there be after the sandwich is cut?
Answers
Answer:
$ because there are 4ft cut into one foot each equals 4
Step-by-step explanation:
If another sample of size 100 is taken, what is the probability that its sample mean will
be greater than 2.56 in?
Answers
Answer:
I don't know the answer to this but
Suppose we draw a sample of size n=16 from this population and want to know how likely we are to see a sample average greater than 22, that is P( > 22)? So the probability that the sample mean will be >22 is the probability that Z is > 1.6 We use the Z table to determine this: P( > 22) = P(Z > 1.6) = 0.0548.
Step-by-step explanation:
-12(5/6a-7/8)+1/14(3 1/2a-1 2/5)
Answers
First change mixed fractions to be full fractions
-12(5/6 a -7/8) + 1/14 (7/2 a - 7/5)
Now multiply out
-12(5)/6 a -12(-7)/8) + 7/14(2) a -7/14(5)
-60/6 a + 84/8 + 7/28 a -7/70
-10a + 10.5 + 1/4a - 1/10
-10a + 0.25a +10.5 -0.1
-9.75a + 10.4
*if this =0 and you need to solve for a then
9.75a=10.4
a= 10.4/9.75
a=16/15
Solve For X? I been stuck on this question..
Answers
Answer:
Step-by-step explanation:
Which in equality represents all possible solutions of -6n< -12
Answers
Answer:
n>2
Step-by-step explanation:
FREE BRAINLIEST IF RIGHT
Answers
Answer:
D is the only one that matches up if I remeber how to do this correctly
Answer:
Yes it is d I agree with him
Step-by-step explanation:
The scale on a map is 1in. = 2 mi. On the map, Greg’s house is 4in. from Melissa’s house. What is the actual distance from Greg’s house to Melissa’s house?
Answers
The distance from Greg's house to Melissa's is 8 mi.
Step-by-step explanation:
Multiply 4 by 2.
Item 8
Select the cone(s) that are similar to a cone with a height of 9 meters and a radius of 3 meters.
cone with a height of 15 meters and a radius of 6 meters
cone with a height of 12 meters and a radius of 4 meters
cone with a height of 6 meters and a radius of 3 meters
cone with a height of 3 meters and a radius of 1 meter
Answers
hope that helped
PLS HELP ASAP!its due very soon so tysm if u help me :)
Answers
Answer:
23
Step-by-step explanation:
Use the part/whole = %/100.
You have that whole = 115 and % = 20, so that would be:
[tex]part/115=20/100[/tex]
simplify & solve:
[tex]part/115=1/5[/tex]
multiply both sides by 115
[tex]part=115/5\\part = 23[/tex]
math come help plese
Answers
Answer:
74
Step-by-step explanation:
pls helpppp with explanation pss
Answers
Step-by-step explanation:
27 cubes are needed because you could need a 3×3 ×3 cube
What is 7-4/6 ?
What is 234-303+93847?
Answers
Answer:
7-4/6 = 6.33333333333
234-303+93847 = 93778
Step-by-step explanation:
find each angle measure.( Diagrams are not drawn to scale)
Answers
2= 73°
3=107°
i think
You can buy 12 cookies for $4. What is the unit rate for the cost of each cookie?
Answers
Answer:
$0.33 per cookie
Step-by-step explanation:
The unit rate (cost per cookie) is
$4
---------------- = $0.33 per cookie
12 cookies
Answer:
Roughly $0.34
Step-by-step explanation:
Set up an equation:
Variable x = cost of one cookie
12cookies/$4 = 1cookie/x
12/4 = 1/x
Cross multiply
12 × x = 4 × 1
12x = 4
Divide both sides by 12
12x ÷ 12 = 4 ÷ 12
1x = 4/12
x = 0.333333
x = is about $0.34
A rectangular prism has a length of 5 cm, a width of 7 cm, and a height of 4 cm. What is the volume of the prism?
Answers
Answer:
140
Step-by-step explanation:
V=whl=7·4·5=140cm³
Answer:
140cm^3
Step-by-step explanation:
It is 140 because volume is base x length x height so 7 x 5 x 4 = 35 x 4 = 140 cm cubed so 140cm^3
Hope this helps
(this is a practice question)
Answers
Answer:
<GHI = 135 degrees
Step-by-step explanation:
(3x + 12) + (x + 4) = 180
4x + 16 = 180
4x + 16 - 16 = 4x
180 - 16 = 164
4x = 164
4x / 4 = x
164 / 4 = 41
x = 41
3 * 41 + 12
3 * 41 = 123
123 + 12 = 135
x^{2}+y^{2}=\left(6\right)^{2}
Answers
Answer: What is your question?