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
dem82 [27]
2 years ago
12

Three Linear Variables​

Mathematics
1 answer:
azamat2 years ago
8 0

Answer:

23 yellow, 30 pink and 12 blue balls

Step-by-step explanation:

Let the number of yellow, pink, blue, and black balls be y, p, b, and x respectively.

<em>From 1st sentence:</em>

y +p +b +x= 90

<em>"</em><em>60</em><em> </em><em>of</em><em> </em><em>them</em><em> </em><em>are</em><em> </em><em>not</em><em> </em><em>pink</em><em>"</em><em> </em>

➜ y +b +x= 60

Given that 25 are black, x= 25.

<em>"</em><em>67</em><em> </em><em>of</em><em> </em><em>them</em><em> </em><em>are</em><em> </em><em>not</em><em> </em><em>yellow"</em>

➜ p +b +x= 67

Subst. x= 25 into the above equations:

y +p +b +25= 90

y+ p +b= 65 -----(1)

y +b +25= 60

y +b= 35 -----(2)

p +b +25= 67

p +b= 42 -----(3)

I will rewrite the 3 equations for better clarity:

y +p +b= 65 -----(1)

y +b= 35 -----(2)

p +b= 42 -----(3)

(1) -(2):

p= 65 -35

p= 30

(1) -(3):

y= 65 -42

y= 23

Substitute p= 30 and y= 23 into (1):

23 +30 +b= 65

b= 65 -53

b= 12

Thus, there 23, 30 and 12 yellow, pink and blue balls respectively.

You might be interested in
Simplify each expression -21v^6/-6v^8, v=0
EleoNora [17]

Answer:

The correct answer is,

-  \frac{7v {14}^{} }{2}

6 0
3 years ago
Read 2 more answers
Yuk noticed that out of 24 students entering the building at Willowville Elementary School this morning, 8 of them were carrying
nordsb [41]

Answer:

the students that brought a lunch box is 28

Step-by-step explanation:

The computation of the students that brought a lunch box is shown below:

= Entire school students × students that carry a lunch box ÷ entering students

= 84 students × 8 ÷ 24 students

= 28 students

Hence, the students that brought a lunch box is 28

3 0
2 years ago
The mixed number 9 14/100 is equivalent to 9.14.
aev [14]
Your answer is True !:)
8 0
3 years ago
Read 2 more answers
How much is 50 dollars
Black_prince [1.1K]
Answer
50 dollars
Explanation
4 0
2 years ago
Read 2 more answers
Find the area of the triangle. Round the answer to the nearest tenth. Triangle is SSA. a= 3.7 b= 3.7 β= 70° ----- A.4.4 square u
Alexus [3.1K]

Answer:

  A.  4.40 square units

Step-by-step explanation:

The triangle is isosceles with base angles of 70°. The a.pex angle will be ...

  180° -2(70°) = 40°

The area of a triangle can be computed from two sides and the angle between them as ...

  A = (1/2)ab·sin(γ)

  A = (1/2)(3.7)(3.7)sin(40°) ≈ 4.40 . . .  square units

3 0
3 years ago
Other questions:
  • How would you use the Fundamental Theorem of Calculus to determine the value(s) of b if the area under the graph g(x)=4x between
    11·1 answer
  • 100 POINTS BRAINLIEST QUESTION ATTACHED.
    5·2 answers
  • The difference of two numbers, a and b, is 21. The difference of 5 times a and two times b is 18. What are the values of a and b
    13·1 answer
  • TRI has vertices T(-3, 4), R(3, 4), and I(0,0). Is TRI scalene, isosceles, or equilateral?
    6·1 answer
  • In ΔFGH, the measure of ∠H=90°, the measure of ∠G=75°, and FG = 24 feet. Find the length of HF to the nearest tenth of a foot.
    5·1 answer
  • 65 inches is how many feet? (Round to nearest hundredth) *
    13·2 answers
  • You have 12 of chocolate to make holiday candy . The first batch used 1/3 of the chocolate. How much chocolate was used ?
    5·1 answer
  • PLEASE HELPPP
    10·2 answers
  • Which decimal is equivalent to -3 1/8
    11·1 answer
  • Whats the answer for this...?<br> Ive tried 6 times in total, i just gave up :l
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!