MATHEMATICS HIGH SCHOOL

-3a+6b=a+4b I need to solve this please.

Answers

Answer 1
Answer:

Answer:

a*2=b

Or

a=0, b=0

Step-by-step explanation:

if a=0 and b=0, then 0=0, it'd be correct, but I'm sure that's not the answer they intend you to pick. You should still put that as one of the answers, however.

-3a+6b=a+4b

+3a     +3a

6b=4a+4b

-6b     -6b

0=4a-2b

/2 /2  /2

0=2a-b

so, we now know that b is twice the amount that a is, and actually, that's the solution for the entire thing.

So, the answer is a*2=b, because the equation works for any set of numbers, as long as it follows this rule.

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Initially a pool contains 350 gallons of water. A hose is placed in the pool and the water is turned on. The hose adds 5.2 gallons of water per minute. Model the total amount, V, of water in the pool for x, the number of minutes the hose has been on.a. V(x) = 5.2xb. V(x) = 350x - 5.2c. V(x) = 350x + 5.2 Eliminated. V(x) = 5.2x + 350
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∠A and ∠B are complementary angles of right triangle ABC, cos A = 0.83, and cos B = 0.55. What is sin A + sin B?A) 0.28

B) 1

C) 0.38

D) 1.38

Answers

The answer is D)1.38

Answer:

1.38

Step-by-step explanation:

4. The diagram in this figure illustrates a _______ angle. A. right
B. supplementary
C. reflex
D. curved

Answers

Answer:

C)   The diagram in this figure illustrates a reflex angle

Step-by-step explanation:

Given : A diagram with an angle.

To find : The diagram in this figure illustrates a _______ angle.  

Solution : We can see from figure it is greater than 180 degree and less than 360 degree.

By the definition of reflex angle : The reflex angle is the larger angle. It is more than 180° but less than 360°.

Therefore,  C)   The diagram in this figure illustrates a reflex angle.

It would be C. because it is more than 180 but less than 360

There are 8 players in a chess tournament. after the tournament each player has to shake hands with e

Answers

There are 8 players in a chess tournament. After the tournament each player has to shake hands with every other player. Which number sentence below is the best way to show the number of handshakes? 
Answer :
7+6+5+4+3+2+1= 28

Solve this system of equations by using an algebraic method. Identify your solutions as an orderEquation:
x + y + z = 6
2x + 4y - z = 7
2x - 4y + 2z = 0

Answers

Final answer:

To solve the system of equations, we can use the substitution method. The solution to the system of equations is x = 1, y = 2, and z = 3.

Explanation:

To solve the system of equations algebraically, we can use the method of substitution or elimination. Let's use substitution method:

  1. From the first equation, we can solve for x to get x = 6 - y - z.
  2. Substitute the value of x in the other two equations.
  3. After substituting, solve the resulting two equations to find the values of y and z.
  4. Once y and z are found, substitute them back into the first equation to find the value of x.

The solution to the system of equations is x = 1, y = 2, and z = 3.

Learn more about Algebra here:

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If you were teaching a foreign visitor about checking and savings accounts at banks and credit unions in the USA, which item below would you say consumers of these accounts usually do not have as a protection of their rights?a.
Government-backed insurance on the deposits.
b.
Regulation of bank practices by government agencies.
c.
A written statement providing the current fees and policies for the account.
d.
No automatic fees charged to the account.

Answers

Answer: D. No automatic fees charged to the account. 

If I had the chance to teach a foreigner regarding checking and savings account at the banks in the United States, I would remind him/her of this important note. There are no automatic fees charged to the account therefore, consumers cannot protect their rights. 

Answer:

d.  No automatic fees charged to the account.

Step-by-step explanation:

The consumers of checking and savings accounts at banks and credit unions  usually do not have the right when they are asked if they want automatic fee to be deducted or not. The banks themselves auto deduct the fee for some service provided like ATM cards issued to customers etc.

The correct answer is option D.

The summer drama club charge $4 per student or admission to a play. The club borrowed $400 from parents to pay for costumes and props. After paying back the parents, the drama club had $100 left. How many students attended the summer play?

Answers

25 students attended the play, $4 per student with a total of $100, 100 / 4 = 25 
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