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
forsale [732]
2 years ago
12

Can someone please help me??

Mathematics
2 answers:
Fantom [35]2 years ago
3 0

Answer:

b=3, y=6

Step-by-step explanation:

Label the 2 equations:

2b +6y= 42 -----(1)

2b +4y= 30 -----(2)

(1) -(2):

(2b +6y) -(2b +4y)= 42 -30

2b +6y -2b -4y= 12

2y= 12

y= 12 ÷2 <em>(</em><em>÷</em><em>2</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>

y= 6

Susbt. y=6 into (2):

2b +4(6)= 30

2b +24=30

2b= 30 -24 <em>(</em><em>-24</em><em> </em><em>on</em><em> </em><em>b</em><em>o</em><em>t</em><em>h</em><em> </em><em>sides</em><em>)</em>

2b= 6

b= 6 ÷2

b= 3

Alekssandra [29.7K]2 years ago
3 0

Answer:

y = 6, b = 3

Step-by-step explanation:

Since both equations have 2b in them, subtracting them gets you a quick result because the 2b-2b cancels out!

2b + 6y = 42

2b + 4y = 30

------------------ -

       2y = 12

         y = 6

Then 2b = 42 - 36 = 6, so b = 6/2 = 3

You might be interested in
About 20​% of babies born with a certain ailment recover fully. a hospital is caring for sixsix babies born with this ailment. t
alisha [4.7K]

Answer :

Yes, the experiment is a binomial experiment because it satisfies all the four characteristics of the binomial experiment :

1. Fixed number of trials

2. Exactly two outcomes

3. Outcomes are independent of each other

4. Probability of all the outcomes remains constant from trial to trial.

Success in the given experiment is that the baby recovers fully.

Hospital is caring for 6 babies , n = 6

p = 0.20 ( Success )

q = 1 - 0.20 = 0.80 ( Not a success )

Value of random variable x is the number of babies which are recovering fully, x = 0, 1, 2, 3, 4, 5 or 6

5 0
3 years ago
X^2+x-12=0 solve ASAP
zzz [600]
X^2+x-12=0 factors out into (x+4)(x-3) so the answer is: x=-4, x=3
6 0
2 years ago
A roller coaster begins at ground level, rises 63 feet, then falls 71 feet. What is the
meriva

Answer:

-8 feet

Step-by-step explanation:

63 - 71 = -8

3 0
3 years ago
Simply the expression <br> 6(6+6+2v) HELP PLEASE ( I know my computer screen is dirty lol)
olya-2409 [2.1K]

Answer:

12v + 62

Step-by-step explanation:

distribute the 6 to 6, 6, and 2v.

36 + 36 + 12v=

12v + 72

8 0
3 years ago
A recipe calls for 12 cups of blueberries to make 7 jars of blueberry jam.
Illusion [34]

Answer:

Each jar has 12/7 cups of blueberries.

Step-by-step explanation:

To find out how many cups of blueberries per jar, we take the number of cups of blue berries and divide by the number of jars

12 cups/7 jars

12/7 cups of blueberries per jar

Each jar has 12/7 cups of blueberries.




4 0
3 years ago
Other questions:
  • Pleeeeaaassssee heeeeellllllpppp faaasst brainliest if 2 PPL ANSWER!!!
    7·2 answers
  • Simplify -5(20 + 3).
    8·2 answers
  • Whats 6x5x9x4x60x27÷39 and i need a remainder
    7·2 answers
  • Indicate the equation of the given line in standard form.The line containing the median of the trapezoid whose vertices are R(-1
    7·1 answer
  • PART 1. HERE ARE THE NUMBERS I CAME UP WITH I JUST NEED THE REST DONE!!!
    7·1 answer
  • Find the value of the logarithm.<br> log 210<br> Round your answer to the nearest thousandth.
    10·2 answers
  • E. Sandy’s monthly bank statement showed the following deposits and withdrawals: -$14.10, $41.50, -$11.03, -$7.25, $83.22 If San
    10·1 answer
  • A triangle has a leg with a length of 3 and a hypotenuse with a length of 6.What is the length of the other leg?
    15·1 answer
  • Which function has a constant additive rate of change of -1/4?​
    8·1 answer
  • Given that a function, g, has a domain of -20 ≤ x ≤ 5 and a range of -5 ≤ g(x) ≤ 45 and that g(0) = -2 and g(-9) = 6, select the
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!