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3 years ago

Solve the system by substitution

1 answer:

5 0

1) Solve one of the equations for either variable.

2) Substitute the expression from Step 1 into the other equation.

3) Solve the resulting equation.

4) Substitute the solution in Step 3 into one of the original equations to find the other variable.

5) Write the solution as an ordered pair.

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This circle graph shows the parts of her time that Kim spends listening to different types of music. Kim spends her time listeni

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3 years ago

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Anna does sit-ups to get ready for her first triathlon. When she starts, she does a sit-up every 2 seconds. But, as she gets tir

Digiron [165]

Answer:

Yes, it is directly proportional.

Step-by-step explanation:

Since Anna does a sit-up at a certain amount of time, then we have two quantities we are comparing: a sit up and the amount of time it takes.

It is said that the tired she gets, the more time she uses. Therefore, as her tiredness increases, the amount of time also increases. This implies that the quantities are proportional, directly proportional.

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4 years ago

What is the common difference of the arithmetic sequence graphed below?

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3 years ago

- 6.85 + m/4 = -11 please do it step by step thank you

nikklg [1K]

Answer:

m = -16.6

Step-by-step explanation:

- 6.85 + m/4 = -11

Add 6.85 to each side

- 6.85+6.85 + m/4 = -11+6.85

m/4 =-4.15

Multiply each side by 4

m/4*4 = -4.15 *4

m = -16.6

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4 years ago

Which products result in a difference of squares or a perfect square trinomial? check all that apply. (5x 3)(5x – 3) (7x 4)(7x 4

Scilla [17]

(7x + 4)(7x + 4) and (x – 9)(x – 9) are Perfect square trinomial. (5x + 3)(5x – 3) and (–3x – 6)(–3x + 6) shows the Difference of squares.

<h3>What is a perfect square?</h3>

A perfect square is a number system that can be expressed as the

square of a given number from the same system.

The following are the answers

(5x + 3)(5x – 3) Difference of squares

(7x + 4)(7x + 4) is a Perfect square trinomial

(2x + 1)(x + 2) has Neither a difference of squares nor a perfect square trinomial.

(4x – 6)(x + 8) has Neither a difference of squares nor a perfect square trinomial.

(x – 9)(x – 9) is Perfect square trinomial

(–3x – 6)(–3x + 6) = $(-3x)^2- ( -6)^2$ Difference of squares.

Learn more about perfect square:

brainly.com/question/1415730

8 0

3 years ago

Solve the system by substitution​

Solve the system by substitution