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Rama09 [41]
3 years ago
9

-3z-1=1-7z simplify​

Mathematics
2 answers:
jonny [76]3 years ago
8 0

Answer:

z= 1/2

Step-by-step explanation:

add 3z to 7z to get z by itself

-1=1-4z

subtract one from both sides

-2=-4z

divide

z=1/2

LUCKY_DIMON [66]3 years ago
5 0

Answer:

z = 1/2

Step-by-step explanation:

Step 1: Write equation

-3z - 1 = 1 - 7z

Step 2: Solve for <em>x</em>

  1. Add 7z to both sides: 4z - 1 = 1
  2. Add 1 to both sides: 4z = 2
  3. Divide both sides 4: z = 1/2

Step 3: Check

<em>Plug in z to verify it's a solution.</em>

-3(1/2) - 1 = 1 - 7(1/2)

-3/2 - 1 = 1 - 7/2

-5/2 = -5/2

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What is the equation of the line that goes through the points (4,-1) and<br> (2,3)?
Arturiano [62]

Answer:

<u>y = -2x + 7</u>

Explanation:

<em><u>y = mx + b</u></em>

<em><u /></em>

<em>m = slope</em>

<em>b = y-intercept</em>

<em>y = a given y coordinate</em>

<em>x = a corresponding x coordinate</em>

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First, we need to find the slope (m).

1) (4, -1)

2) (2/3)

m = slope = \frac{y_2-y_1}{x_2-x_1} = \frac{3-(-1)}{2-4} = \frac{4}{-2} = -2

plug in the values to the equation <u>y = mx + b</u>

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-1 = -2(4) + b

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now, we can substitute in m and b into the equation y = mx + b

<u><em>y = -2x + 7</em></u>

5 0
2 years ago
Luna simplifies the expression (2x-4)-(3x+2) correctly. which expression represents luna's result
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Okay, so first you have to factor out that negative throughout the parenthesis.
(2x-4)-3x-2
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5 0
3 years ago
What is the proper fraction for 9/2?
love history [14]

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7 0
2 years ago
Trigonometry Problem <br><br> Find the length of the missing side.
Alinara [238K]

Answer:

29.187

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Question Help
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Answer:

The speed of the boat is 20 km/hr

Step-by-step explanation:

Let s be the speed of boat in still water

Let d be the distance

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Jane took 30 min to drive her boat upstream to water-ski at her favorite spot.

So, Distance traveled in upstream =Speed \times time =(s-4) \times \frac{30}{60}

Downstream speed = s+4

So, Distance traveled in downstream = Speed \times time =(s+4) \times \frac{20}{60}

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6 0
2 years ago
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