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
tamaranim1 [39]
3 years ago
5

A circle had a radius 20 cm. What is the area?

Mathematics
1 answer:
ruslelena [56]3 years ago
4 0

Answer:

use formula πr^2

Step-by-step explanation:

the area is 1257.14cm^2

You might be interested in
Weinstein, McDermott, and Roediger (2010) con- ducted an experiment to evaluate the effectiveness of different study strategies.
anastassius [24]

Answer:

a) The number of correct answers

b) Discrete

c) Ratio        

Step-by-step explanation:

We are given the following in the question:

Experiment:

Evaluate the effectiveness of different study strategies. All students were then given a test on the passage material and the researchers recorded the number of correct answers.

a) The dependent Variable

The number of correct answers given is the dependent variable because it depends on the number of times the passage is read.

b) Nature of dependent variable.

  • It is a discrete variable.
  • Since, the number of questions will always be expressed in whole numbers and cannot be expressed as decimals.
  • They are always counted and not measured.

c) Scale of measurement

  • Ratio is used to measure the dependent variable because true zero for the number of correct questions answered exist.
  • If the measure is zero that means truly no questions were answered correctly.
5 0
3 years ago
Kara and Kevin are siblings, and have decided to discuss the idea of allowance with their parents since all of their friends get
wolverine [178]
Kara will have more money. By the end of the week, she will have $21, Kevin on the other hand will only have $1.75.
3 0
3 years ago
What is the value of m<br> What is the value of n
NeTakaya

Answer:

Step-by-step explanation:

M is 90 degrees anytime you see that square it equals 90 and any time you see that half circle that is obtuse so more than 90 degrees and doing the math the answer to n would be around 127

6 0
3 years ago
Write an equation of the line that passes through the given point and is (a) parallel and (b) perpendicular to the given line.
Levart [38]
The rule of the equation of the line is y=mx+b but since we don't have a B so it will be y=mx so in order to solve it you need to exchange the ordered pairs 
X=4, y=3
so 3=m(4)
so the slope which is m 
m=4 over 3 (4/3)

4 0
4 years ago
What is the value of p in the equation?
Klio2033 [76]

Answer:10

Step-by-step explanation:multiply and simplify

5 0
3 years ago
Read 2 more answers
Other questions:
  • 6,000 dollars is invested in two different accounts earning 3%and 5% interest. At the end of the year, the two accounts earned 2
    5·1 answer
  • What is the value of (17+8)-6x2?
    14·1 answer
  • The height of a triangle is 4 in. greater than twice its base. The area of the triangle is no more than 168 in.2. Which inequali
    13·1 answer
  • Maggie constructs a triangle with side lengths 7 centimeters long and 10 centimeters long. Which is not a possible length for th
    9·1 answer
  • (x^2 + 4x + 4) simplify
    14·2 answers
  • When a defensive player pushes the offender player it is called a..?
    15·2 answers
  • In order to prove that a quadrilateral is a square specifically, we must show that it possess the properties of both a ________
    11·1 answer
  • HELP URGENT 20 POINTS FULL SENTENCE WITH EXAMPLES PLEASE!!!
    13·1 answer
  • I need help asap on how to do this<br>​
    15·1 answer
  • A random variable is defined as a process or variable with a numerical outcome. Which of the following are random variables?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!