1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
malfutka [58]
2 years ago
13

Please help me i need to turn this in soon and i don't understand

Mathematics
1 answer:
Tcecarenko [31]2 years ago
7 0

circumference of the mirror = 175.84 cm

area of the mirror = 2461.76 cm²

The measure needed to find the amount of wire round the mirror is the circumference.

The measure needed to find the amount of glass needed is the area.

<h3>How to find area and circumference of a circle?</h3>

The circumference and area of a circle can be found as follows:

circumference of the mirror = 2πr

circumference of the mirror = 2 × 3.14 × 28 = 175.84 cm

area of the mirror = πr²

area of the mirror = 3.14 × 28²

area of the mirror = 2461.76 cm²

The measure needed to find the amount of wire round the mirror is the circumference.

The measure needed to find the amount of glass needed is the area.

learn more on circle here: brainly.com/question/16125353

#SPJ1

You might be interested in
-4 times a number plus 29
kipiarov [429]
-4x+29? I think that's what you're asking.
8 0
3 years ago
(7z^3+42z^2-15z+1)- (36z^2+12z-21)​
My name is Ann [436]

Answer:

7z^3+6z^2-27z+22

Step-by-step explanation:

The given question is of subtraction:

So,

(7z^3+42z^2-15z+1)- (36z^2+12z-21)​

=7z^3+42z^2-15z+1-36z^2-12z+21

Combining alike terms to simplify

=​7z^3+42z^2-36z^2-15z-12z+1+21

=7z^3+6z^2-27z+22

So the answer in simplified form is:

7z^3+6z^2-27z+22 ..

6 0
3 years ago
Read 2 more answers
Liam filled each of 5 buckets with 3.5 liters of water. How much water did Liam use to fill all 5 buckets
Elodia [21]

Answer:

All we do is do 3.5 x 5 to get 17.5 water!

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Can someone please solve this?
Molodets [167]
Multiplicity of a root means, is there that many times.

\bf \begin{cases}&#10;x=3\implies &x-3=0\\&#10;x=2\implies &#10;&\begin{cases}&#10;x-2=0\\&#10;x-2=0\\&#10;x-2=0&#10;\end{cases}&#10;\end{cases}&#10;\\\\\\&#10;(x-3)(x-2)~~(x-2)(x-2)=\textit{original polynomial}&#10;\\\\\\&#10;(x^2-5x+6)~~(x^2-4x+4)=y&#10;\\\\\\&#10;x^4-4x^3+4x^2-5x^3+20x^2-20x+6x^2-24x+24=y&#10;\\\\\\&#10;1x^4-9x^3+30x^2-44x+24=y
3 0
3 years ago
If tan a = 9/40<br>use trigonometric identities to find the values of sin a and cos a.​
Sindrei [870]

Answer:

see explanation

Step-by-step explanation:

Given

tan a = \frac{9}{40} = \frac{opposite}{adjacent}

We require the hypotenuse h

Using Pythagoras' identity

h² = 9² + 40² = 81 + 1600 = 1681 ( take square root of both sides )

h = \sqrt{1681} = 41 , thus

sin a = \frac{opposite}{hypotenuse} = \frac{9}{41}

cos a = \frac{adjacent}{hypotenuse} = \frac{40}{41}

4 0
3 years ago
Other questions:
  • The students at Isaac's school voted between a bear and a lion as the new school mascot. 47 students voted for the bear and 893
    8·1 answer
  • Johnathan is making his famius pasta dish his mom ate 2/7 of pasta and his
    10·2 answers
  • 100 POINTS ANSWER FAST
    11·1 answer
  • WILL GIVE BRAINLIEST
    8·1 answer
  • You own a motel and have a pricing structure that encourages rentals of rooms in groups.
    10·1 answer
  • Can someone answer this question please answer it correctly if it’s corect I will mark you brainliest
    5·2 answers
  • Help with math:) 6th grade!!!
    9·1 answer
  • In 1999, the share price for General Motors stock was $144 per share but has been declining at an average rate of 14% per year.
    8·1 answer
  • Solve the compound inequality for x:<br> 2 &lt; 3x - 5 &lt; 4
    14·1 answer
  • A recursive formula for the sequence 18,9,4.5,... is
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!