5.82 per pair of socks
PLSSSSS HELP ME!!!! I WILL MARK!!! U!!!
5(x – 2) = 30 what is x
Answer:
-10
Step-by-step explanation:
Answer:
x=8
Step-by-step explanation:
5(x – 2) = 30
Distribute:
5x - 10 =30
Add 10 to both sides:
5x = 40
Divide
x=8
Check your work:
5(8 - 2) =30
5(6) =30
5 * 6=30
30=30!
Final answer: x=8
If
[tex] \cos(330°) = \frac{ \sqrt{3} }{2} [/tex]
Then prove that:
[tex] \cos(165°) = - \frac{ \sqrt{3} + 1}{2 \sqrt{2} } [/tex]
Please help me!
Answer: see proof below
Step-by-step explanation:
Given: cos 330 = [tex]\frac{\sqrt3}{2}[/tex]
Use the Double-Angle Identity: cos 2A = 2 cos² A - 1
[tex]\text{Scratchwork:}\quad \bigg(\dfrac{\sqrt3 + 2}{2\sqrt2}\bigg)^2 = \dfrac{2\sqrt3 + 4}{8}[/tex]
Proof LHS → RHS:
LHS cos 165
Double-Angle: cos (2 · 165) = 2 cos² 165 - 1
⇒ cos 330 = 2 cos² 165 - 1
⇒ 2 cos² 165 = cos 330 + 1
Given: [tex]2 \cos^2 165 = \dfrac{\sqrt3}{2} + 1[/tex]
[tex]\rightarrow 2 \cos^2 165 = \dfrac{\sqrt3}{2} + \dfrac{2}{2}[/tex]
Divide by 2: [tex]\cos^2 165 = \dfrac{\sqrt3+2}{4}[/tex]
[tex]\rightarrow \cos^2 165 = \bigg(\dfrac{2}{2}\bigg)\dfrac{\sqrt3+2}{4}[/tex]
[tex]\rightarrow \cos^2 165 = \dfrac{2\sqrt3+4}{8}[/tex]
Square root: [tex]\sqrt{\cos^2 165} = \sqrt{\dfrac{4+2\sqrt3}{8}}[/tex]
Scratchwork: [tex]\cos^2 165 = \bigg(\dfrac{\sqrt3+1}{2\sqrt2}\bigg)^2[/tex]
[tex]\rightarrow \cos 165 = \pm \dfrac{\sqrt3+1}{2\sqrt2}[/tex]
Since cos 165 is in the 2nd Quadrant, the sign is NEGATIVE
[tex]\rightarrow \cos 165 = - \dfrac{\sqrt3+1}{2\sqrt2}[/tex]
LHS = RHS [tex]\checkmark[/tex]
Write the following expression in radical form:
Answer:
its A!
Step-by-step explanation:
Renee had a box of cupcakes, of which she gave 1/2 to her friend Juan. Juan gave 3/4 of his share to his friend Elena. What fractional part of the original box of cupcakes did Elena get?
Answer:
3/8
Step-by-step explanation:
There are 8 cupcakes. Juan gets 4 and there are 4 left. Elena gets 3 out of the 4 that are left. Since there were 8 she got 3 out of the total (8) cupcakes. I used those specific number because that is the most simplified numbers.
Can you explain and solve this? : 3n + 2 = 8
Answer:
3n+2=5n=8
n=8÷5
n=1.6
Answer:
n = 2
Step-by-step explanation:
Original Equation:
3n + 2 = 8
Subtract 2 from both sides.
3n = 6
Divide both sides by 3
n = 2
Hope I helped :)
10/1 math work again plz help
Answer:
1. y = -0.75x + 2
2. y = -1.8x - 7
3. y = -3x + 3
4. y = -11/7x + 56
5. y = -0.6x + 3
6. y = -2x - 14
7. y = 14x + 7
8. y = 2/8x - 4/3
9. y = x - 6
10. y = -1/3x + 4
Step-by-step explanation:
Question 1
3x + 4y = 8
4y = -3x + 8
y = -0.75x + 2
Question 2
9x + 35 = -5y
5y = -9x - 35
y = -1.8x - 7
Question 3
2y - 6 = -6x
2y = -6x + 6
y = -3x + 3
Question 4
-11x - 7y = -56
7y = -11x + 56
y = -11/7x + 56
Question 5
5y/3 = -(x - 5)
5y = -3(x - 5)
5y = -3x + 15
y = -0.6x + 3
Question 6
-2(2x + y) = 28
-4x - 2y = 28
2y = -4x - 28
y = -2x - 14
Question 7
-14x + y = 7
y = 14x + 7
Question 8
12y = (8x - 48)/3
36y = 8x - 48
y = 2/8x - 4/3
Question 9
(3x - 3y)/2 = 9
3x - 3y = 18
3y = 3x - 18
y = x - 6
Question 10
2x/3 + 4(y - 2) = 0
2x/3 + 2y - 8 = 0
2y - 8 = -2x/3
3(2y - 8) = -2x
6y - 24 = -2x
6y = -2x + 24
y = -1/3x + 4
Hope this helped! If not please let me know! <3
Evaluate The Exsperession. Show your work
6.7-3^2.9+4^3
or
25
Step-by-step explanation:Hi there !
6×7 - 3²×9 + 4³ =
1. raise the numbers to power
= 6×7 - 9×9 + 64
2. we perform the multiplications
= 42 - 81 + 64
3. we perform addition and subtraction
= (42 + 64) - 81
= 106 - 81
= 25
Good luck !
Answer:
-17
Step-by-step explanation:
-3^2×9+4^3
-3^2×3^2+64
-3^4+64
-81+64
-17
Find the rate of discount for a pair of pants that cost 65$ and are on sell for 39
Answer: 65 - $39 = $26 >> amount you save
26 / 65 = 0.4 = 40% >> discount rate
Step-by-step explanation:
y - 3 = 2 (x + 4).
Answer:
Step-by-step explanation:
Answer:
y = 2x+7
Step-by-step explanation:
y - 3 = 2x+4
y = 2x+4+3
y = 2x+7
Given the points (3,6) and (4,8) what is the rate of change?
Answer:
2
Step-by-step explanation:
use slope equation
Which ratio is equivalent to 7:3
A. 12:8
B. 49:9
C. 28:12
D. 21:7
Answer:
c
Step-by-step explanation:
7:3=28:12
Answer:
C and D
I think
Draw a line representing the "rise" and a line representing the "run" of the line. State
the slope of the line in simplest form.
Click twice to plot eath segment.
Click a segment to delete it.
Question 4
Which of the following sets of numbers represents a function?
(1, 2), (2, -3), (3, - 3), (4,5)
(1, 2), (2, 3), (1,3), (4,5)
(-1,- 1),(4, - 1), (1, - 1), ( – 1, - 2)
(2, - 4), (4, - 1), (2, 4), ( – 4, 1)
Answer:
c
Step-by-step explanation:
because it is
Entire the solution as s completely simplified fraction:
8/22 + 5/22 + (-7/-22)
Answer:
The simplest form is 3/11
Step-by-step explanation:
6/22 divided by 2 =3/11
What is the value of x
hi!! here is your answer
Answer:
30
Step-by-step explanation:
4x + x + 30 = 180 (co interior angles are equal)
5x + 30 = 180
5x = 180 - 30
5x = 150
x = 150/5
x = 30
hope you understood❤
-7x + 6= 27 what does x stand for ?
-7x + 6 = 27
-7x = 21 (Subtract 6 from both sides)
x = -3 (Divide -7 from both sides)
I don't really understand this..please..help..
Answer:
it is b , 1462 dollarrss
Step-by-step explanation:
in how many year will rs 8000 amount to rs 13824 at 20% per annum interest compounded annually? please please help me out
Answer :-
3 yearsstep by step explanation:-
Let the time be x
principal = rs 8000
Amount = rs 13824
rate = 20% p.a
A = P(1+r/100)^n
13824 = 8000 ( 1 + 20/100)^n
=> 13824/8000 = (120/100)^n
=> 13824/8000 = (24/20)^n
=> (24/20)³ = (24/20)^n
=> 3 = n
=> n = 3 years
Can someone help me please
9514 1404 393
Answer:
see attached
Step-by-step explanation:
Translation 12 units down puts each point 12 units lower on the graph than the position where it is currently shown. Segment RS is now shown on the line y=9. It will be translated straight down so it appears on the line y = 9-12 = -3.
Similarly, T has a y-coordinate of 2. Translated down 12, it will have a y-coordinate of y = 2-12 = -10.
The x-coordinates of all of the points remain the same.
The translation is shown in the attachment.
Colleen decides to go bowling. She has a total of $30 to spend. The cost per game is $4, plus shoe rental which is $6. What is the equation? How many games can Colleen bowl?
Answer:
4x+6=30
Step-by-step explanation:
30-6=24
4*6=24
6 games, assuming shoe rental only has to be paid one time.
Which equation represents a line with a slope of zero?
O y= 2x
Oy=-1/2x+1/2
Oy=4
O x=-5
Which table has a constant of proportionality between y and 2 of 12?
Choose 1 answer:
Answer:
its table A
Step-by-step explanation:
i just did this question on khan and the answer is table A
Heyy can u help me????
"ba" = 11,
"ab" = 38,
38 - 11 = 27,
Sooooo... Now you have the value of "ba" and "ab."
Welcome!! <3
In a triangle the three angles are x°, 2x° and 3x°
a) Show that 6x = 180 _______________________________________
____________________________________________________________
b) Find the value of x
x = _____°
BRAINLIEST TO WHOEVER GETS IT ASAP PLEASEEE
Use the graphing tool to determine the intercepts.
ty
intercept =
20
y-intercept =
10
-10
-20
) Intro
Done
Answer:
x- intercept = (3,0)
y-intercept = (0, -12)
Step-by-step explanation:
IN points (x-intercept, y-intercept)
Hope this helps!!!
50 points need asap
Solve the inequality for x. Show each step of the solution.
12x > 9 ( 2x - 3) - 15
Answer:
The solution of 12x>9(2x-3)-15 is x>7.
Evaluate f(−1)=−3x^3 + 2x^2
Answer:
5
Step-by-step explanation:
f(-1)= -3(-1)³+2(-1)²
= -3(-1)+2(1)
= 3+2
=5
Giving brainly for correct answer!!! 30 Points
Lines 8 and T are parallel. Find value of X
There are multiple answers!!
A 130
B 50
C 90
D 140
Answer:
The answer is B.
Step-by-step explanation:
Given that vertically opposite angles are the same so the inner angle of the triangle is 40°.
Next, you have to find the other angle of the triangle. Assuming that total angles in a triangle is 180° so you have to subtract :
180° - 40° - 90° = 50°
So the value of x is 50°.
Solve 19x - z = y for x.
a) x = (y - z)/19
b) x = y + z - 19
c) x = y/19+Z
d) x = (y + z)/19
Answer:
d
Step-by-step explanation: