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
Ganezh [65]
2 years ago
7

May I please receive help?

Mathematics
1 answer:
mestny [16]2 years ago
4 0

Answer:

Arc=4\pi

Step-by-step explanation:

The formula to get the length of arc is

Arc= degree x \pi/180 x radius

Going by this formula, we can plug in a few numbers:

Arc= 80 x \pi/180 x 9

Since it says to go off of term pi, we can simplify the 80 and the fraction and simplify.

Arc=80\pi/180 x 9

Arc=4\pi/9 x 9

Simplify, the nine cancels out

Arc=4\pi

You might be interested in
Convert 39°C to degrees Fahrenheit.
posledela

Given a temperature C in celsius, you can convert it to Fahrenheit by using the formula

F=32 + \dfrac{9C}{5}

In your case C=39, so you have

F = 32 + \dfrac{9\cdot 39}{5} = 32+70.2=102.2

6 0
2 years ago
The students in a class were each asked to name their favorite meal of the day. Which table could be represented by percentage b
sineoko [7]

Answer:

G

Step-by-step explanation:

I say G because when you look at the bar, the maximum is 100% and G is 20 in total. Therefore, the maximums are the same types and both can be divided by 10.

7 0
3 years ago
Read 2 more answers
Need help someone please help me
Margaret [11]

Answer:

Its a i just took the test

Step-by-step explanation:

4 0
3 years ago
Help I cannot figure this question out.
netineya [11]

Answer:

B. x = -1 ± i

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Algebra I</u>

  • Standard Form: ax² + bx + c = 0
  • Factoring
  • Quadratic Formula: \displaystyle x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}

<u>Algebra II</u>

  • Imaginary Numbers: √-1 = i

Step-by-step explanation:

<u>Step 1: Define</u>

x² + 2x = -2

<u>Step 2: Identify Variables</u>

  1. Rewrite Quadratic in Standard Form [Addition Property of Equality]:        x² + 2x + 2 = 0
  2. Break up Quadratic:                                                                                        a = 1, b = 2, c = 2

<u>Step 3: Solve for </u><em><u>x</u></em>

  1. Substitute in variables [Quadratic Formula]:                                                \displaystyle x=\frac{-2 \pm \sqrt{2^2-4(1)(2)}}{2(1)}
  2. [√Radical] Evaluate exponents:                                                                     \displaystyle x=\frac{-2 \pm \sqrt{4-4(1)(2)}}{2(1)}
  3. Multiply:                                                                                                           \displaystyle x=\frac{-2 \pm \sqrt{4-8}}{2}
  4. [√Radical] Subtract:                                                                                        \displaystyle x=\frac{-2 \pm \sqrt{-4}}{2}
  5. [√Radical] Factor:                                                                                        \displaystyle x=\frac{-2 \pm \sqrt{-1}\sqrt{4}}{2}
  6. [√Radicals] Simplify:                                                                                       \displaystyle x=\frac{-2 \pm 2i}{2}
  7. Factor:                                                                                                             \displaystyle x=\frac{2(-1 \pm i)}{2}
  8. Divide:                                                                                                             \displaystyle x = -1 \pm i
3 0
3 years ago
A stone is dropped into some water and a circle of radius r is formed and slowly expands. The perimeter of the circle is increas
Mazyrski [523]
I believe it would be 6 due to the radius being a half of the actual circumfrence
3 0
2 years ago
Read 2 more answers
Other questions:
  • PLZ HELP QUICK!!! A restaurant catered a party for 40 people. A child’s dinner (c) cost $11 and an adult’s dinner (a) cost $20.
    5·2 answers
  • Determine what type of model best fits the given situation: Every day, half a bacteria population dies.
    8·1 answer
  • A glass triangular prism for a telescope is 5.5 inches long. Each side of the prism's triangular bases is 4 inches long and 3 in
    6·1 answer
  • Michelle correctly solved a linear equation and the last line of her work was: 1 = 2
    15·2 answers
  • Which could be the base shape of the cylinder
    6·2 answers
  • The price of bananas can be determined by the equation P=0.25n, where P is the price and n is the number of bananas. What is the
    14·1 answer
  • PLEASE HURRY!!! PLEASE
    9·1 answer
  • Complete the proof. What is reason #5?
    14·1 answer
  • Rounding to the nearest ten
    14·1 answer
  • Which of the following values could the number 500,000 be composed of?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!