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2 years ago

Solve the system by substitution.

Mathematics

1 answer:

Iteru [2.4K]2 years ago

3 0

Answer:

I gave you most of the answer. I'll let you check my work and find the point using the solution.

Step-by-step explanation:

The first thing we do is we divide by negative one in the first equation to get

y = -x.

-3x + 3y = -36

Plug in y = -x and get

-3x + 3(-x) = -36

= -3x - 3x = -36

This equals -6x = -36

divide both sides by -6 and you get 6. 6 is your x value

Plug 6 back in to the second equation.

-3x + 3y = -36

-3(6) + 3y = -36

-18 + 3y = -36

3y = -18

y = -6

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Iconic memory is used when a loud thunderclap occurs during a storm. Please select the best answer from the choices provided T F

jek_recluse [69]

Answer:

The statement is false.

Step-by-step explanation:

" Iconic memory is the visual sensory memory (SM) register pertaining to the visual domain and a fast-decaying store of visual information. It is a component of the visual memory system which also includes visual short-term memory (VSTM) and long-term memory (LTM) "

FOR EXAMPLE:

You are glancing at your friend's phone and you see some image then afterward when you close your eyes you will be able to visualize the image very briefly.

Hence the given statement:

" Iconic memory is used when a loud thunderclap occurs during a storm is FALSE "

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3 years ago

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Fine the sum of -8 and 3

Rashid [163]

Answer:

The sum of -8 and 3 is -5

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3 years ago

If x:y = 2:5, find the value of (-x+3y):(2x+y)

Anit [1.1K]

Answer:

let x=2t and y=5t

-x+3y = -2t+15t = 13t

2x+y = 4t+5t = 9t

So the ratio is 13t : 9t

So, the ratio is 13 : 9

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3 years ago

3x+5(2+x)=4x-7 help me out here?

Oksi-84 [34.3K]

Answer:

x = -17/4

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Distributive Property

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Algebra I

Terms/Coefficients

Step-by-step explanation:

Step 1: Define

Identify

3x + 5(2 + x) = 4x - 7

Step 2: Solve for x

[Distributive Property] Distribute 5: 3x + 10 + 5x = 4x - 7
[Addition] Combine like terms: 8x + 10 = 4x - 7
[Subtraction Property of Equality] Subtract 4x on both sides: 4x + 10 = -7
[Subtraction Property of Equality] Subtract 10 on both sides: 4x = -17
[Division Property of Equality] Divide 4 on both sides: x = -17/4

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3 years ago

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Two number cubes are rolled in a board game. What is the probability that both number cubes land on the same number?

allsm [11]

50% chance they will land on the same number and there’s also a 50% chance they won’t.

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3 years ago