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DedPeter [7]
3 years ago
12

A)Simplify the expression and explain each step.

Mathematics
1 answer:
docker41 [41]3 years ago
3 0

Answer:

see below    PLEASE GIVE BRAINLIEST

Step-by-step explanation:

A)     4(3x + 2) - 2     =     12x + 8 -2     =     12x + 6

B)     20b - 16    =   4(5b -4)

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Write the slope-intercept form of the equation of each line.
gregori [183]

Greetings!

Answer:

2y = x - 6

Step-by-step explanation:

First, we must find the slope of the current equation.

This is the number in front of the x.

Seeing as this is -2x, the slope of this line is -2

When finding the slope of a line perpendicular, you need to find the \frac{-1}{slope}

So, in this case it is:

\frac{-1}{-2}

The negatives cancel out which leave \frac{1}{2}

So the gradient is \frac{1}{2}


Now, to find the equation of a line, you need to use:

y - y1 = m(x - x1)

Where ya and x1 are the values in the coordinates (2 , -2)

So y1  = -2, x1 = 2, and m is a half. Plug these values in:

y - - 2 = \frac{1}{2}(x - 2)

We need to get rid of the half so we multiply the whole equation by 2:

2y - - 4 = (x - 2)

The minus and the negative turn into a positive:

2y + 4 = x - 2

And now simply move the +4 over to the other side, making it a negative:

2y =  -2 - 4 + x

Simplify:

2y = x - 6

<h3>So the equation of the line is 2y = x - 6</h3>
<h2>Hope this helps!</h2>
5 0
3 years ago
An estate of $613,000 is left to three siblings. The eldest receives 2 times as much as the youngest. The middle sibling receive
Assoli18 [71]

Answer:

Eldest: $298500

Middle: $165250

Youngest: $149250

Explanation:

We can show the siblings like this:

e=2y                  (eldest)

m=16000+y       (middle)

To find the value of y, or the youngest sibling, we use an equation.

2y+16000+y+y=613000

Simplify:

4y+16000=613000

Subtract 16000 on both sides:

4y=597000

Divide both sides by 4:

y=149250

The youngest received $149250.

Knowing this, we can plug in the numbers into the original formulas:

e=2(149250)=298500                 ...or $298500

m=16000+149250=165250         ...or $165250

y=149250                                      ...or $149250

Add all those numbers up, and you reach $613000.

7 0
3 years ago
How much would it cost to build 10 houses if it costs 7 500 000 per house.
Andrej [43]

Answer:

75 000 000

Step-by-step explanation:

7 500 000 times 10 = 75 000 000

6 0
3 years ago
Read 2 more answers
(x+3)(x+4) plz show your work
Molodets [167]
X + 3 = 3x
x + 4 = 4x
8 0
3 years ago
Read 2 more answers
F F 2 X LIGI OM -8 What is the slope of a line parallel to line ? O A. A line parallel to line r has an undefined slope. OB. OC.
siniylev [52]

it would be 0 as its a 0 slope, hence forth the parallel line would also be 0!

7 0
3 years ago
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