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
saul85 [17]
3 years ago
6

At a parade, 1/4 of the participants have red hair, 1/6 of them have brown hair, and the rest have black hair. What fraction of

the participants have black hair
Mathematics
2 answers:
4vir4ik [10]3 years ago
6 0
Ok so first we need to find out how many have either red or brown hair, which is 1/4+1/6. here, we need to find a common denominator, which is 12. so we are going to multiply 1/4 by 3/3 and 1/6 by 2/2. this yields, 3/12+2/12=5/12. since the rest have black hair, we do 1-5/12 which is 7/12
AlekseyPX3 years ago
5 0
First we need to make the fractions have the same denominator. the smallest common multiple of 4 and 6 is 12, and 1x3= 3, and 4x3= 12, so 3/12 of the participants have red hair. 1x2= 2, and 6x2=12, so 2/12 of the participants have brown hair. 3+2=5, so 5/12 of the participants have red OR brown hair, and there's 7 left. therefore 7/12 of the participants have black hair.
You might be interested in
A quiz has thirty questions whose answers can only be correct or incorrect.
satela [25.4K]

Using a system of equations, it is found that Gina got 22 questions correct in the test.

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In this problem, the variables are:

  • Variable x: Number of questions she got correct.
  • Variable y: Number of questions she got wrong.

The test has 30 questions, hence:

x + y = 30 -> y = 30 - x.

She scored 152 points, hence, considering the value of each question:

8x - 3y = 152.

Since y = 30 - x:

8x - 3(30 - x) = 152

11x = 242

x = 242/11

x = 22

Gina got 22 questions correct in the test.

More can be learned about a system of equations at brainly.com/question/24342899

#SPJ1

4 0
2 years ago
What is the answer???
atroni [7]

Answer:

it is a 90 degree angle

Step-by-step explanation:

because the little square in the corner

5 0
3 years ago
Read 2 more answers
Add the polynomials. (9x2 - 6x +6) + (7x3 - 9x)
Alchen [17]

Answer:

-15x+45 should be your answer

Step-by-step explanation:

4 0
3 years ago
3 brother are having dinner
Nutka1998 [239]
It really just depends on how fast or how slow they eat but the second brother will get done eating first
5 0
3 years ago
Read 2 more answers
1.8 = 2.1h - 5.7 - 4.6h <br> h= __
Blababa [14]

Answer:

how are you doing

Step-by-step explanation:

7 0
2 years ago
Other questions:
  • 18:63,14:39,6:21,and 2:7 which of the ratios is not equivalent to 10:35
    13·1 answer
  • Mrs Larsen made 12 pillows from 16 yards of the same fabric. How much fabric was used to make each pillow? between what two whol
    10·1 answer
  • The scale factor on a scale drawing of machine part is 15 1 /8. If the part is 3 7/8 inches long as the drawing, how long is the
    13·1 answer
  • Separate 126 into two parts so that one part is 16 more than the other part. Find each part. show work
    15·1 answer
  • Find the amount of tax and the tax rate. Round to two decimal places
    11·2 answers
  • In parallelogram ABCD, AE and CF are perpendicular to diagonal BD, and EF = 10 cm. If BD = 28 cm, then how long are DE and BF? (
    9·2 answers
  • Evaluate the power: (−3)^4<br> A. 81<br> B. -81<br> C. 243<br> D. -331
    9·2 answers
  • Can someone explain this to me? I really need help. Thx!
    7·1 answer
  • Find the exact values of the remaining five trigonometric functions of o satisfying the given conditions.
    5·1 answer
  • From a hot-air balloon, Guadalupe measures a 31^{\circ} ∘ angle of depression to a landmark that’s 316 feet away, measuring hori
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!