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3 years ago

PLS Helpppp (4y – 3x – 2) – (7y + 4x +3). you have to simplify, linear equations

Mathematics

1 answer:

Andreas93 [3]3 years ago

8 0

Answer:

-3y - 7x - 5

General Formulas and Concepts:

Pre-Algebra

Distributive Property

Algebra I

Terms/Coefficients

Step-by-step explanation:

Step 1: Define

(4y - 3x - 2) - (7y + 4x + 3)

Step 2: Simplify

Distribute negative: 4y - 3x - 2 - 7y - 4x - 3
Combine like terms (y): -3y - 3x - 2 - 4x - 3
Combine like terms (x): -3y - 7x - 2 - 3
Combine like terms (Z): -3y - 7x - 5

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The train Chug-a-Lug must be going 153.5 miles to match the same speed as Old Steamy so they can arrive at the station at the same time.

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4 years ago

Factor x^2-8x-48 completely

Naddik [55]

Answer: (X-12)(x+4)

The middle number is -8 and the last number is -48.

Factoring means we want something like

(x+_)(x+_)

Which numbers go in the blanks?

We need two numbers that...

Add together to get -8

Multiply together to get -48

Can you think of the two numbers?

Try 4 and -12:

4+-12 = -8

4*-12 = -48

Fill in the blanks in

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Answer:

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3 years ago

Read 2 more answers

What is the ratio of 6/15 in simplest form

oksian1 [2.3K]

What is the ratio of 6/15 in simplest form?

6/15 = 2/5 (2 : 5)

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3 years ago

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A 200-liter tank initially full of water develops a leak at the bottom. Given that 20% of the water leaks out in the first 5 min

Leya [2.2K]

Answer:

127.53 liters left after 10 minutes

Step-by-step explanation:

Let

$A \to Amount$

$t \to time$

Given

$A(0) = 200$ --- initial

$A(5) = 200 * (1 - 20\%) = 160$ --- the amount left, after 5 minutes

Required

$A(10)$ --- amount left after 5 minutes

To do this, we make use of:

$A(t) = A(0) * e^{kt}$

$A(5) = 160$ implies that:

$160 = 200 * e^{k*5}$

Divide both sides by 200

$0.80 = e^{k*5}$

Take natural logarithm of both sides

$\ln(0.80) = \ln(e^{k*5})$

$\ln(0.80) = \ln(e^{5k})$

$\ln(0.80) = 5k\ln(e)$

So, we have:

$-0.223 = 5k$

Divide by 5

$k = -0.045$

So, the function is:

$A(t) = A(0) * e^{kt}$

$A(t) = 200 * e^{-0.045t}$

The amount after 10 minutes is:

$A(10) = 200 * e^{-0.045*10}$

$A(10) = 200 * e^{-0.45}$

$A(10) = 127.53$

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3 years ago

Complete the table!!!!

Nookie1986 [14]

1:30
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4 years ago