A DVD with a radius of 6 centimeters rotates at a speed of 243 revolutions per minute. Find the liner speed in centimeters per second.
Answer:
152.7 cm/s
Step-by-step explanation:
The radius of DVD, r = 6 cm
The angular speed of DVD, [tex]\omega=243\ rev/min=25.45\ rad/s[/tex]
We need to find the linear speed of the DVD.
The relation between linear speed and angular speed is given by :
[tex]v=r\omega\\\\v=0.06\times 25.45\\\\v=1.527\ m/s[/tex]
or
v = 152.7 cm/s
So, the linear speed of the DVD is 152.7 cm/s.
pls help me with this work sheet i will give brainliest and 50 points
1) y = 5
2) y = 34
3) y = -13
idek the rest :(
yooo could I get some help with this math hw, im being timed so tysm if u can help:))
a triangle has side lengths of 2 meters, 11 meters, and 11 meters. classify the triangle by the lengths of its sides.
isosceles triangle
equilateral triangle
scalene triangle
obtuse triangle
Answer:
Isosceles Triangle
Step-by-step explanation:
Equilateral: All equal sides
Isosceles: 2 equal sides
Scalene: No equal sides
Kind of confused, can someone help?
can someone please help with the question I have listed, thank you!
Answer:
Ok i will try if i can do it
Find the area of the circle. Round your answer to the nearest hundredth.
BRAINLEST if right
Answer:
452.39 mm²
Step-by-step explanation:
The area (A) of a circle is calculated as
A = πr² ( r is the radius (
Here r = 12 , then
A = π × 12² = 144π ≈ 452.39 mm² ( to the nearest hundredth )
after 7 years, an initial investment of $600 earned $84. Find the interest rate
Answer:
2%
Step-by-step explanation:
Solving our equation
r = 84 / ( 600 × 7 ) = 0.02
r = 0.02
converting r decimal to a percentage
R = 0.02 * 100 = 2%/year
The interest rate required to
accumulate simple interest of $ 84.00
from a principal of $ 600.00
over 7 years is 2% per year.
You have been told to make 144 two ounce chocolate chip cookies for a banquet . The recipe yields three pounds of cookie . By what factor would you need to increase the recipe
Answer: 6
Step-by-step explanation:
You have been told to make 144 two ounce chocolate chip cookies so the total weight of those cookies is:
= 144 * 2
= 288 ounces
A pound is equivalent to 16 ounces.
The recipe yields 3 pounds of cookies which is:
= 3 * 16
= 48 ounces
For the recipe to make 288 ounces, you need to scale up by:
= 288 / 48
= 6
Dr. Tim recorded an unladen European swallow flapping it wings at a constant rate of 50 wing beats each 30 seconds how many times will the swallow beat its wings in 4 minutes
Answer: 400 wing beats
Step-by-step explanation:
Find out the number of 30 second periods in 4 minutes.
If there are two 30 second periods in 1 minute, 4 minutes will have:
= 2 * 4
= 8
The swallow flaps its wings at 50 wing beats per 30 seconds. There are eight 30 seconds periods in 4 minutes .
= 50 * 8
= 400 wing beats
За+ 2а=25
I need help
Answer: a=5
Step-by-step explanation:
3a+2a=5a
5a=25
divide both sides by 5 to get a alone
a=5
Answer:
5
Step-by-step explanation:
3a+2a=25
5a=25
/5 /5
a=5
check:
3*5=15
2*5=10
10+15=25
Solve for xxx in each of the figures below and mark the correct value.
Assume that the lines are parallel.
Answer:
Picture 1:
12x+1=109
12x=108
x=9
Picture 2:
2x-3=57
2x=60
x=30
Let me know if this helps!
Find the value of x to the nearest tenth
Answer:
I think it's 8 because the other sides are equal, so x and 8 should be equal as well
FREE BRAINLIEST IF YOU ANSWER CORRECTLY!! (50pts)
you can answer as the color marked instead of typing the whole thing out!
Marcie Bruno received a 4.2% merit increase and a 2.75% cost-of-living increase
after her quarterly review. Her new weekly salary was $788.92. What was her
weekly salary prior to the increases?
Answer:
734.1
Step-by-step explanation:
100%=788.92
4.2%=33.13
2.75%=21.69
33.13+21.69=54.82
788.92-54.84=734.1
Solve for x. Type in your numerical answer only, do not type the degree symbol. 60, 8x-4
1/8 divided by 5 = ??
Answer:
[tex]\frac{1}{40}[/tex]
Step-by-step explanation:
Answer:
1/40
Step-by-step explanation:
[tex]\frac{1}{8}[/tex] ÷ [tex]\frac{5}{1}[/tex]
[tex]\frac{1 x 1 }{8 x 5}[/tex] = 1/40
Can the following angles create a triangle and why? 11°, 101° and 60°
Yes, because the angles do add up to 180°
No, because the angles do add up to 180°
Yes, because the angles do not add up to 180°
No, because the angles do not add up to 180°
Answer:
No, because the angles do not add up to 180°
Consider the quadratic function
fx) = x2 - 8x -9
What is the vertex of the function?
Vertex
Halp me plsss
Answer:
bahhahahaha Im sorry i dont know
Entre Pedro y su hermana Ana han ahorrado $ 810. Pedro ha ahorrado $150 más que Ana. ¿Cuánto dinero ha ahorrado cada uno? NECESITO LA RESPUESTA CON SISTEMA DE ECUACIÓN 2 X 2, POR FAVOR.
Answer:
Pedro ahorró: $ 480
Ana ahorró = $ 330
Step-by-step explanation:
Vamos a representar
La cantidad que Pedro ahorró = x
La cantidad que Ana ahorró = y
Por eso,
x + y = $ 810 ...... Ecuación 1
Pedro ha ahorrado $ 150 más que Ana
x = 150 + y
Por lo tanto, sustituimos x por 150 + y
150 + y + y = 810
150 + 2y = 810
2 años = 810 - 150
2 años = 660
y = 660/2
y = $ 330
Resolviendo para x
= x = 150 + y
x = $ 150 + $ 330
x = $ 480
Por lo tanto,
Pedro ahorró: $ 480
Ana ahorró = $ 330
In AABC, m_A = 45°, m_B= 89º and AC = 15. To the nearest tenth what is the measure of BA? ANSWER RN PLz!!
O A. 10
O B. 11.34
O C. 10.8
O D. 11

============================================================
Work Shown:
The triangle has the given angles A = 45 and B = 89
Let's find angle C
A+B+C = 180
C = 180-A-B
C = 180-45-89
C = 46
----------------
Segment BA, or side c, is opposite angle C
Segment AC, or side b, is opposite angle B
So we have this known info:
angle B = 89side b = 15angle C = 46Apply the law of sines to find c. Make sure your calculator is in degree mode.
sin(B)/b = sin(C)/c
sin(89)/15 = sin(46)/c
c*sin(89) = 15*sin(46)
c = 15*sin(46)/sin(89)
c = 10.7917406394501
c = 10.8
Four less than a number is twelve
of 4 Tom is applying for a visa
He has to pay £2,100 for the visa as well as a 8% charge on the visa price for an on-the-day
service If Tom has 1 year to save, how much money should he save per month to be able to cover his
costs?
Round your answer to the nearest £10.
Answer:
190
Step-by-step explanation:
0.08 × 2100 = 168
168 + 2100 = 2268
2268 ÷ 12 months = 189
With rounding, the answer is 190 per month
What is the inequality that represents the graph shown?
Given:
The graph of an inequality.
To find:
The inequality that represents the graph shown.
Solution:
From the given graph it is clear that the boundary line passes through the points (0,-1) and (2,0). So, the equation of boundary line is
[tex]y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)[/tex]
[tex]y-(-1)=\dfrac{0-(-1)}{2-0}(x-0)[/tex]
[tex]y+1=\dfrac{1}{2}x[/tex]
[tex]y=\dfrac{1}{2}x-1[/tex]
The boundary line is a dashed line and the shaded portion is below the boundary line so the sign of inequality must be <.
[tex]y<\dfrac{1}{2}x-1[/tex]
Therefore, the required inequality is [tex]y<\dfrac{1}{2}x-1[/tex].
can someone pls answer my recents :(
Answer:
i cannot see your questions
Step-by-step explanation:
Answer:
Ok
Step-by-step explanation:
Which fraction would make this equation true? 4x ? = 6 2/3
Use the drawing and the provided ruler. Each centimeter in the drawing represents 5 feet. The perimeter of the blue perennial bed is ___ feet. The perimeter of the green perennial bed is ___ feet.
Answer:
Blue bed is 50 feet
Green bed is 35 feet
Step-by-step explanation: If you use a ruler it is 3 centimeters long ways and it is 2 centimeters sideways. 3+3= 6 and 2+2=4 which is 10 added together. If every centimeter represents 5 feet then 5 x 10= 50. Repeat for green and there's your answer :)
The price paid for $90 jeans after a 45% discount is applied
$
Step-by-step explanation:
Answer:
$49.50
Step-by-step explanation:
90 · 45% = 40.5
90 - 40.5 = 49.5
Some number subtracted by -6 is 41. Multiply this number by-3. Then divide
this number by -4. What is the final number?
1294+6392×3945-3302
=
Answer:
Answer is 25,214,432.
Step-by-step explanation:
I hope it's helpful!
Answer:
25,214,432 hope it helps.......m(x) = 3x + 2
n(x) = 2x - 5
Find m(x) and n(x)
Write the composite function. Show your work.