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goldenfox [79]
3 years ago
6

Which set of expressions are not equivalent?

Mathematics
1 answer:
IrinaK [193]3 years ago
3 0
Expression,
• 4(3a) - 2(4a) and 4a2
is not equivalent.

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Write an equation of the line that passes through the given point and is perpendicular to the graph of the given equation. Pleas
Anna71 [15]

Answer:

y = \frac{1}{3}x + 4

Step-by-step explanation:

First, to figure out the equation of a line you must find the slope then plug in the coordinates.

In order to find the slope of the equation, you know that it is perpendicular to the equation y = -3x + 7.

Perpendicular slopes are basically reciprocals with opposite signs; you flip the number and give it the opposite symbol.

For example, the perpendicular slope of 2 would -1/2, because flipping the fraction 2/1 is 1/2 and the opposite sign of + would be -.

Therefore, the perpendicular slope of -3 would be 1/3, be 3/1 flipped upside down is 1/3 and the opposite sign of - is +.

Then you plug in the slope into the equation of a line along with the coordinate.

A line is y = mx + b

Since you found the slope, m = 1/3

They also give you the coordinate (3,5), meaning when x = 3, the y =5.

You plug everything into the equation to solve for b:

5 = (1/3)(3) + b

b = 5 - (1/3 * 3) = 5 - 1 = 4

Since you have values for m and b, the equation can now be constructed as

y = 1/3x + 4

6 0
3 years ago
How do you calculate elapsed time?
Valentin [98]
First tell me what elapsed time is
4 0
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When x=1/2, what is the value of 8x-3/x
Viefleur [7K]
8x - 3/x

x = 1/2

(8 • 1/2) - 3/0.5

4 - 1.5

2.5
6 0
3 years ago
Elsa pumped 12 gallons of water into her pool. This was done over a period of 2 minutes at a constant rate. What was the change
Rashid [163]

Answer:

it was 6 because do 12 / 2 will equal 6.

5 0
3 years ago
TRANSLATE EACH SENTENCE INTO AN EQUATION.
Oksanka [162]
7.
The Pacific Ocean = 46% of Earth (P = 46%)
The Land on Earth = 54% of Earth (E = 54%)

8.
One Fence Per Yard = $1.75

$73.50 - $3.50 (The Tax) = $70

$70 Divided by $1.75 = 40 Yards


5 0
3 years ago
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