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
natita [175]
3 years ago
14

Twelve people in a group are left-handed.

Mathematics
1 answer:
tester [92]3 years ago
8 0

Answer:

60 people

Step-by-step explanation:

Let

x = total people in the group

Number of Left-handed people = 12

Percentage of left-handed people = 20%

20% of x = 12

20/100 * x = 12

0.2 * x = 12

0.2x = 12

x = 12/0.2

x = 60 people

x = total people in the group = 60

You might be interested in
A triangular plot of land has the dimensions shown in the diagram.what is the area of the land PLEASE ANSWER TODAY
Ghella [55]
(20*30)/2 = 300


300 km is the area of the triangle
5 0
3 years ago
Read 2 more answers
If the length of a rectangle in terms of x is x^2+2x-3 and its width is 2x^2+3x+5, what is the perimeter of this rectangle?
AnnZ [28]

Step-by-step explanation:

perimeter=(L+W)2

L=x^2+2x-3

W=2x^2+3x+5

(x^2+2x-3+2x^2+3x+5)2

(x^2+2x^2+2x+3x-3+5)2

(3x^2+5x+2)2

p=(6x^2+10x+4)units

3 0
3 years ago
Membership in the Volunteers Club increased by 15% from last year. If the number of members last year was m, complete a simplifi
ad-work [718]
For this case what you can do is the following rule of three:
 m ---> 100%
 x ----> 115%
 Clearing the value of x we have:
 x = (115/100) * (m)
 x = 1.15 * (m)
 Answer:
 a simplified expression to represent the number of members this year is:
 x = 1.15 * (m)
4 0
3 years ago
Write a polynomial that represents the area of the rectangle
Eduardwww [97]

Multiplying polynomial:

a^m * a^n = a^m + n


Hope this helped!!!

3 0
3 years ago
A study claims that the mean age of online dating service users is 40 years. Some researchers think this is not accurate and wan
Mademuasel [1]

Answer: H_0:\mu=40

H_0:\neq40

Step-by-step explanation:

  • A null hypothesis is a hypothesis where a researcher generally try to disprove, it says that there is no statistically significant relationship between the two variables .
  • An alternative hypothesis says that there is a statistical significance  between two variables.

Claim 1. : Mean age of online dating service users is 40 years.

i.e. \mu=40, since it has equals sign so we take this as null hypothesis.

Claim 2. : Mean age of online dating service users is not 40 years.

\mu\neq40

⇒ Null Hypothesis : H_0:\mu=40

Alternative hypothesis : H_0:\neq40

5 0
3 years ago
Other questions:
  • 6√18 + 3√50 simply ?
    12·2 answers
  • The difference between the observed values of a variable and the long-run average of the observed values in repetitions of the m
    11·1 answer
  • What is a prime factorization for 105
    8·2 answers
  • A rectangular swimming pool can hold 1408 cubic feet of water. the pool is 22 feet long and has a depth of 4 feet. what is the w
    13·2 answers
  • Read the quotation from "Song of Myself."
    6·1 answer
  • Which expression is not equivalent to 3x-2
    8·1 answer
  • Are the following two binomials
    8·1 answer
  • PLZZZZ HELP!!! what is y = 2/3x - 6 in standard form
    7·1 answer
  • HELLLLLLLLLLLLLPPPPPPPPPP
    5·2 answers
  • Each unit on the coordinate plane represents one block. Donna is at Town Hall. She walks 7 blocks left and 2 blocks up to get to
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!