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
gladu [14]
3 years ago
15

Do more than 50 percent of the children in a certain group have brown hair?

Mathematics
1 answer:
babymother [125]3 years ago
7 0

Answer:

What we know is that 30% of the group have brown hair and are girls. It means that in the other 70% we have the boys with brown hair, the other boys and the other girls.

In the case all the girls have brown hair, the 70% remaining would be boys. So 70% of then would have brown hair. (0.7*0.7=0.49 -> 49% of the children would be brown hair) so 49% (boys) and 30% (girls) are more than 50%..

Now, let's suppouse that 90% of the group are girls. It means 10% are boys and 70% of that 10% (=7%) are the boys in the group that have brown hair. Now 7% + 30% of the children have brown hair, wich isn't more than the half.

We have explained with two extreme cases that the information is not enough for making a precise answer

You might be interested in
Jon borrows $6.50 from his friends to pay for snacks , and $11.75 from his sister to go to the movies. How much money does he ne
Naddik [55]

Answer:

$18.25

Step-by-step explanation:

5 0
3 years ago
Kobe collected $18.50 more than amari, and DJ collected $12.25 less than Kobe. Altoghter the three boys collected $95.70. How mu
NNADVOKAT [17]
Dk collected 29.90 $
6 0
3 years ago
Read 2 more answers
T/8 + 23 - 4 = 36. Solve for the variable. Write the answer only, do not type in T= form.
oksian1 [2.3K]
136 is the answer!!!!
6 0
3 years ago
4a^2-9(x+y)^2 factories this step by step pls. Anyone !! Help me pls!!​
xxTIMURxx [149]
  • Answer:

<em>(2a - 3x - 3y)(2a + 3x + 3y)</em>

  • Step-by-step explanation:

<em>Hi there !</em>

use formula

<em>a</em><em>² - </em><em>b</em><em>² = (a - b)(a + b)</em>

<em>a</em><em> = 2a</em>

<em>b</em><em> = 3(x + y)</em>

<em />

<em>4a² - 9(x+y)² =</em>

<em>= [2a - 3(x + y)][2a + 3(x + y)]</em>

<em>= (2a - 3x - 3y)(2a + 3x + 3y)</em>

<em />

<em>Good luck !</em>

5 0
3 years ago
The inverse of the function f(x)=<br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7Bx%20%2B%203%7D%20%20%2B%202" id="TexFormula1
irina [24]

Answer:

f^-1 (x)=x^2-4x+1

Step-by-step explanation:

y=sqrt(x+3)+2

x=sqrt(y+3)+2

sqrt(y+3)=x-2

y+3=(x-2)^2

y+3=(x-2)(x-2)

y+3=x^2-2x-2x+4

y+3=x^2-4x+4

y=x^2-4x+4-3

y=x^2-4x+1

3 0
3 years ago
Other questions:
  • Can someone explain how to do this
    10·2 answers
  • George ran 745.362 miles last year. To the nearest hundredth, about how
    6·2 answers
  • Completing the square <br> 4x2-8=-13x
    12·1 answer
  • Extra Points! Using the following data, calculate the mean absolute deviation: 1 6 5 8 3 7 1 4 10 9 What is the mean absolute de
    10·2 answers
  • Evaluate 8a- 1+ 0.5b when a = 1/4 and b = 10
    7·2 answers
  • The vertex of this parabola is at (2, -4). When the y-value is -3, the x-value is -3. What is the coefficient of the squared ter
    9·1 answer
  • Which expression is equivalent to 6(4x + 3y)?
    8·2 answers
  • Geometry questions today!
    5·1 answer
  • If the actual sale for the week is $525 and hector guessed $625, what i the percent error?
    8·1 answer
  • Karen's mom is filling 12 birthday hats with candy for her birthday party. Each hat is shaped like a cone with a height of 6 inc
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!