Wrong answers will be reported.
2cos120°-x sin120°. cos180°= x tan150°
Answers
Answer:
[tex]2cos120°-x sin120°. cos180°= x tan150° \\ 2( - \frac{1}{2} ) - x( \frac{ \sqrt{3} }{2} ) \times ( - 1) = x{\frac{ \sin( 150°)}{ \cos(150°)}} \\ ( - \frac{2}{2} ) - \frac{ \sqrt{3} }{2}x \times ( - 1) = x \frac{ \frac{1}{2} }{ - \frac{ \sqrt{3} }{2} } \\ - 1 - ( - \frac{ \sqrt{3} }{2}x) = x( \frac{1}{2} \times ( - \frac{2}{ \sqrt{3} } )) \\ - 1 + \frac{ \sqrt{3} }{2} x = ( - \frac{2}{2 \sqrt{3} } )x \\ - 1 + \frac{ \sqrt{3} }{2} x = ( - \frac{1}{ \sqrt{3} } )x \\ - 1 + \frac{ \sqrt{3} }{2} x =( \frac{ \sqrt{3} }{ \sqrt{3} } )( - \frac{1}{ \sqrt{3} } )x \\ - 1 + \frac{ \sqrt{3} }{2} x = - \frac{ \sqrt{3} }{3} x \\ 6( - 1 + \frac{ \sqrt{3} }{2} x) = 6( - \frac{ \sqrt{3} }{3} x) \\ - 6 + \frac{6 \sqrt{3} }{2} x = - \frac{6 \sqrt{3} }{3} x \\ - 6 = \frac{ - 6 \sqrt{3} }{3}x - \frac{6 \sqrt{3} }{2} x \\ - 6 = (- 2 \sqrt{3})x - (3 \sqrt{3})x \\ - 6 = - 5 \sqrt{3} x \\ x = \frac{ - 6}{ - 5 \sqrt{3} } \\ x = \frac{ 6}{5 \sqrt{3} } \\ x = \frac{6}{5 \sqrt{3} } \times \frac{ \sqrt{3} }{ \sqrt{3} } \\ x = \frac{6 \sqrt{3} }{5 \times 3} \\ x = \frac{2\sqrt{3} }{5} [/tex]
Answer:
(2√3 )/5is he value of x.thank you.
Related Questions
The cost for 5 adults and 3 children to attend a show is $210. ( /5)
For 2 adults and 5 children the cost is $160.
Form a pair of simultaneous linear equations and solve them to find the cost of:
i. an adult ticket
ii. a child ticket
Answers
Answer: i. Cost of adult ticket = $ 30
ii. Cost of child ticket = $20
Step-by-step explanation:
Define variables:
Let x= cost of 1 adult tickets , y= cost of 1 child tickets.
Form linear equations:
5x+3y = 210 (i)
2x+5y= 160 (ii)
Multiply (i) by 2 and (ii) by 5
10x +6y = 420 (iii)
10x+25y = 800 (iv)
Eliminate (iii) from (iv)
19y = 380
⇒ y= 20
Put this in (i)
[tex]5x+3(20)=210\Rightarrow\ 5x+60 = 210\\\\\Rightarrow\ 5x=150\\\\\Rightarrow\ x=30[/tex]
Hence, Cost of adult ticket = $ 30 and Cost of child ticket = $20
The half-life of a radioactive kind of iodine is 60 days. How much will be left after 240 days, if you start with 480 grams of it?
Answers
Answer:
30 grams
Step-by-step explanation:
half life is 60 days so every 60 days the amount 480 grams will be half
in 240 days will decay 240 /60 = 4 times
once 480 /2 = 240
twice 240 /2 = 120
trice 120 / 2 = 60
four times 60/2 = 30 grams will be left
can someone find the perimeter of this shape? ill give brainliest if ur right
Answers
Answer:
24
Step-by-step explanation:
Add up all the sides to fid the perimeter. 6+6+8+4=24
Evaluate each expression if m=2, n=16, and p = (Examples 1-6)
1. m + 10
2. n-4
3. min
4. 6m - 1
5. 3p
6. 12p
12m - 4
8. 9p to the 2nd power
Answers
Answer:
1. 12 2. 12 3.1/8 4. 11 5. -15 6.-60 7.20 8.225
Step-by-step explanation:
Given that :
m=2 and n=16 , p = {1-6 =-5} then;
1. m+10 = 2+10 = 12
2. n-4 = 16-4 = 12
3. m / n = 2/16 = 1/8
4. 6m - 1 = 6*2 - 1 = 12 -1 = 11
5. 3p =3* -5 = -15
6.12 p = 12* -5 = -60
7. 12m-4 = 12*2 - 4 = 24 -4 =20
8. 9p² = 9*-5² = 9 * 25 = 225
What is 15.7 of 80 percent ?
Answers
Answer:
12.56
Step-by-step explanation:
yw
end of semester help
Answers
Answer:
Step-by-step explanation:
A= 1/2 bh
10.98 = 1/2b (3.6)
10.98=b/2 (3.6)
10.98=b (1.8)
10.98/1.8=b
6.1=b
WEEEEEEEEEEEEEEEEEEEEEEE
Answers
Answer:
4/x^6
Step-by-step explanation:
8x^3/2x^9
so first reduce the fraction with 2 .
then simplify
4/x^6
what's the value of the X in the Triangle below
Answers
34+x+90 =180(Angle sum property of triangle )
124 +x =180
x= 180-124
x= 56
So option c is the correct one!!Jin is training for the 50 meter dash. Each day that he trains, he runs the dash six times. Last week, he trained for four days. This week, he trained for five days. In two weeks, how far has Jin run? In killometers
Answers
Answer:
1 1/2 kilometers
Step-by-step explanation:
If he runs 3000 meters every day and then trains for 5 days that means he ran 1 1/2 kilometers
can someone pls pls pls help me asap?!
Answers
Answer: slope of the line is 1
Step-by-step explanation:
Answer:
1/1
Step-by-step explanation:
Joel has a prepaid phone card that charges $0.50 to connect and $0.50 per minute. He also can use a cell phone that charges $2.50 to connect and $0.25 per minute. In how many minutes will calls made using the phone card and the cell phone cost the same?
Answers
Answer:12 minutes
Hope this is right sorry if not <3
How many groups of 1/4 are in 3?”
Answers
Answer: 12
Step-by-step explanation:
1/4 = 0.25
2/4 = 0.50
3/4 = 0.75
4/4 = 1.00
If you do this three times, It will have an end result of twelve
hope this helps!!
QUICK PLZ!!! Use the number line below, where RS = 6y + 3, ST = 4y + 7, and RT = 60.
Answers
Step-by-step explanation:
[Diagram in image attached]
RS + ST = RT
(6y +3) + (4y + 7) = 60
6y + 3 + 4y + 7 = 60
10y + 10 = 60
10y = 60 - 10
10y = 50
y = 50/10
y = 5
RS = 6y +3 = 6(5) + 3 = 30 + 3 = 33
ST = 4y +7 = 4(5) + 7 = 20 + 7 = 27
RT = 60
{RS + ST = RT
33 + 27 = 60}
HOPE THIS HELPS YOU
MARK AS BRAINLIEST
help me please. real answers only. Write an equation for the line parallel to the given line that contains C.
C(2,8); y = - 4x + 5
y =
(Type your answer in slope-intercept form.)
Answers
Answer:
y = -4x + 16
Step-by-step explanation:
The slope of the given line is -4
when two lines are parallel, their slopes are equal
That means the slope of the second line is -4 too
Thus, we have to use the point-slope form to write the equation
That will be
y-y1 = m(x-x1)
y-8 = -4(x-2)
y -8 = -4x + 8
y = -4x + 8+8
y = -4x + 16
Help! Need answers fast!
giving 20 points!
Find the product of ( 2x^2 − 4x + 3 ) ( 3x + 6 ) using the box method shown below. What will the monomial be in the box marked with a B?
Select one:
a. - 12x 2
b. - x 2
c. - x
d. - 12x
Answers
Answer:
It should be A. -12^2
Step-by-step explanation:
Looking at the box B, you have to multiple 3x and -4x. 3 * -4 is -12 and the two x's become squared. Making your answer -12x^2
I’m pretty sure that’s it
Help quick pls
I need nine and eight
Answers
Answer:
8. y=2x+6
9. y=1/2x-5
Step-by-step explanation:
Use point slope form to figure out the y intercept. Because it needs to be parallel, the same slope will be used to solve for point slope form.
what is m∠2 if m∠6 = 120°?
Answers
Answer:
I love ur pfp
Step-by-step explanation:
ANSWER: m∠2 = 120°, m∠3 = 60°; Sample answer: ∠1 and ∠2 are alternate exterior angles, so they have the same measure. ∠2 and ∠3 are supplementary. So, m∠3 = 180° – 120° or 60°.
Please answer has to be a decimal.
Answers
Answer:
32.8
Step-by-step explanation:
Find the missing sides
and the perimeter
20 miles
23 miles
28 miles
21 miles
Answers
Answer:
i think it is 5
Step-by-step explanation:
will give brainliest please help:)
1; 5.5x+1-(1.5x+17)
2; x-3x-(-5x)
Answers
9514 1404 393
Answer:
4x -16 3xStep-by-step explanation:
Use the distributive property to distribute the outside minus sign to all terms inside parentheses.
1) 5.5x +1 -(1.5x +17) = 5.5x +1 -1.5x -17 = x(5.5 -1.5) +(1 -17)
= 4x -16
__
2) x -3x -(-5x) = x -3x +5x = x(1 -3 +5)
= 3x
Need HELP!
OA:point U
OB:point V
OC:point W
OD: point X
Answers
Answer:
what's the question? I don't understand what's being asked
solve please -3x-27=
Answers
Answer:
−3(x+9)
Step-by-step explanation:
please please please help
Answers
Answer:
See below.
Step-by-step explanation:
Slope of parallel line is -3/2.
Slope of perpendicular line is 2/3
see below
step-by-step explanation
slope of parallel lines is -3/2.
Slope of Perpendicular line is 2/3.
Any Simple way to learn mathematics formula ?
Answers
Answer:
I'll be honest if you don't understand your teacher just try looking it up on yt. Or like Kahn Academy. And if neither of that works just ask here, or maybe some older friends or siblings.
Nancy's cell phone company automatically deducts $30 from her bank
account every month to pay her bill.
Nancy does not add money to her bank account. What is the change in
Nancy's bank account after 6 months?
Answers
Answer:
5
Step-by-step explanation:
30/6=5
Pls help and show workings
Option
A. 7
B. 10
C. 13
D. 22
Answers
Answer:
It would be C. 13
Step-by-step explanation:
if you line up the two lines of n and 13cm they aren't equal so I would have to say 13. sorry if I'm wrong
3n - 2n- 6h + 9
Pls help ASAP
Answers
Answer:
n-6h+9
first you subtract the ns from each other because those are the only like terms
So first you get all the like terms together from calculating the addition sequence here from their coefficients
So
(3-2-6)x+9
Now you calculate the difference in the parenthesis
-5x+9 is your answer and you leave it like that because you can’t really do anything else just leave it how it is
Which function is shown in the graph?
Answers
Answer:
[tex]f(x)=log_5 x[/tex]
Step-by-step explanation:
The answer is clear once you graph it. You can use a graphical calculator or the online graphing calculator Desmos.
i need help this too help me and thank you and thank you
Answers
Answer:
Linear
Step-by-step explanation:
Don't worry I just know, give me Brainliest
???????????????i didn’t learn this what’s the answer ?
Answers
Answer:
24 inches squared
Step-by-step explanation:
That is a triangle, and the area of a triangle is 1/2(b)(h), which is one half times the base times the height. Let's identify those things.
1/2: the area of a rectangle can be calculated base times the height, and a triangle is half of that rectangle, hence the 1/2
(b) or base: base is usually identified as the horizontal line in the triangle, which is 6 inches in this case.
(h) or height: height is usually the vertical line, and in this case, the vertical line is 8 inches.
Now time for the math:
1/2(6)(8) = 24 inches squared