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2 years ago

Help me please i need the correct answer

Mathematics

1 answer:

BaLLatris [955]2 years ago

7 0

Answer:

First one is 25/2

Step-by-step explanation:

12×2+1=25/2

9×4+1=36/4

cross multiply and you get

100/

divide both by 2 and you get 50/4 then you divide both by 2 again and you get 25/2 because you can't reduce it anymore

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Which oddered pair is the the system of equation?

Mnenie [13.5K]

Answer:

(3, -9)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS
Equality Properties

Algebra I

Solving systems of equations using substitution/elimination
Solving systems of equations by graphing

Step-by-step explanation:

Step 1: Define systems

-5x - 3y = 12

y = x - 12

Step 2: Solve for x

Substitution

Substitute in y: -5x - 3(x - 12) = 12
Distribute -3: -5x - 3x + 36 = 12
Combine like terms: -8x + 36 = 12
Isolate x term: -8x = -24
Isolate x: x = 3

Step 3: Solve for y

Define original equation: y = x - 12
Substitute in x: y = 3 - 12
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Step 4: Graph systems

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3 years ago

What is the measurement of angle p a 36B 64 c116 D 244

slamgirl [31]

Answer:

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Step-by-step explanation:

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5 0

2 years ago

Solve the systems of equations 6x+3y=9 2x+3y=1

patriot [66]

Solve by elimination.
The goal is to cancel out one of the variables in order to easily solve for the other variable.

Do this by changing the equations so that the coefficients of either x or y add up to 0.

Notice the coefficients of y are 3 and 3, if we make one of them negative then they add up to 0. 3+ (-3) = 0

Multiply 2nd equation by -1.

6x +3y = 9
-2x -3y = -1
__________
4x +0y = 8

Solve for x
4x = 8
x = 8/4 = 2

Plug x=2 back into one of original equations to find y.
---> 2(2) + 3y = 1
---> 4 + 3y = 1
---> 3y = -3
---> y = -1

Therefore solution is (2,-1)

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3 years ago

How do I figure this out

ddd [48]

I agree. There can't ever be 2 equal signs in A math problem

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3 years ago

Simplify. (8^3)^7 = 8^n n=?

DiKsa [7]

Hello User,

Answer: n = 488

3 0

3 years ago