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
Digiron [165]
3 years ago
6

here are the approximate population of three countries, expressed in scientific notation: panama: 4 x 10^6 ; peru: 3.2 x 10^7 ;

thailand: 7 x 10^7. Lin says that more than 20 times as many people live in thailand than in panama. Is this correct​
Mathematics
1 answer:
kramer3 years ago
5 0

Answer:

No, Lin assumption is wrong

Step-by-step explanation:

Given

Population of panama = 4 x 10^6

population of thailand = 7 x 10^7.

Taking their ratios

thailand/panama = 7x 10^7/4 x 10^6

thailand/panama  = 7/4 * 10^7-6}

thailand/panama = 1.75 * 10^1

thailand/panama  = 17.5

thailand = 17.5 * panama

Hence the amount of people in thailand is not up to 20times those in panama. Hence Lin assumption is wrong

You might be interested in
If a+b = -0.5 and ab = -2 , then what is 4a^3+9b?
m_a_m_a [10]

Answer:

pls be more cleare

Step-by-step explanation:

type the question properly and clearly

5 0
3 years ago
If 3 is a factor of 32, then the unknown factor in 3 x= 32 is a whole number
4vir4ik [10]
3 is not a factor of 32. Therefore, x will not be a whole number. X is equal to about 10.66
5 0
4 years ago
10% out of 100 in simplest form
marin [14]
Answer:

10

Step-by-step explanation:

100 ÷ 10 = 10
8 0
3 years ago
Consider the radical equation √c+22 = c + 2.
dimulka [17.4K]

First square both sides to get:

c + 22 = (c + 2)^2

or

c + 22 = c^2 + 4c + 4

Move the terms on the left side to the right side:

c^2 + 3c - 18 = 0

Factor to get:

(c + 6) * (c - 3) = 0.

The solutions are c = -6 and c = 3.

Check to see if these answers work by plugging them into the original equation:

c = -6:

sqrt (-6 + 22) ?= -6 + 2

But, -6 + 2 is a negative number, and you can't get a negative from a square root. So, -6 is extraneous.

c = 3:

sqrt (3 + 22) ?= 3 + 2

5 = 5. So, 3 works.

The answer is: B

7 0
3 years ago
A sweater was on sale at %40 off the regular price. Ella saved $20 by buying the sweater on sale. What was the regular price of
Artyom0805 [142]

so she saved $20 and that was 40% of the regular price, let's say the regular price is "x".

if 20 is 40%, what is "x" or namely the 100%?

\bf \begin{array}{ccll} amount0&\%\\ \cline{1-2} 20&40\\ x&100 \end{array}\implies \cfrac{20}{x}=\cfrac{40}{100}\implies \cfrac{20}{x}=\cfrac{2}{5}\implies 100=2x \\\\\\ \cfrac{100}{2}=x\implies 50=x

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following expressions will produce an answer with three significant figures .
    14·1 answer
  • 5 + 1.5 (2d - 1) = 0.5 what is d?
    6·1 answer
  • One x-intercept for a parabola is at a point (1,0).
    5·1 answer
  • Which table represents the recursive formula?<br> an = a(n-1) + 6
    10·1 answer
  • The function f is defined by f(x)=x^2+7x-18.
    5·1 answer
  • Can you help me with this? Length x width x height
    6·1 answer
  • A kite is flying 78 ft off the ground, and its string is pulled taut. The angle of elevation of the kite is 41°. Find the length
    5·1 answer
  • What is the equation of the following line written in slope-intercept form?
    6·2 answers
  • Angelo charges $30 to mow 1 yard. Which equation could be used to determine the total cost, y, for mowing x yards? A. y = x + 30
    7·2 answers
  • If (see picture), which statement must be true? PLEASE HELP!!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!