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Over [174]
3 years ago
6

Determine whether the lines are parallel or perpendicular or neither. 2x=y−10 and y=−2x

Mathematics
1 answer:
MrRa [10]3 years ago
7 0

Put the first equation in slope-intercept form, or y = mx + b. Start by subtracting y from both sides.

2x - y = -10, subtract 2x from both sides.

-y = -10 - 2x

Divide both sides by negative one.

y = 10 + 2x

To find the slope when the equations are in slope-intercept form you look at the coefficient of x. The first equation has the slope of 2 (which we just found), and the second equation has the slope of -2.

Parallel lines have the same slope and perpendicular lines have opposite reciprocal slopes. Since 2 and -2 are neither of these, your answer is neither.

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What is the solution to system of equation
Alenkinab [10]

The lines are intersected at point (0, -5). So (0, -5) is the solution.

Answer is the third one

(0,-5 )

5 0
3 years ago
A circular piece of fabric has a radius of 1.2 ft. The fabric sells for $5.40 per ft². What is the total cost of the circular pi
Kisachek [45]
The answer is $24.41

Step 1. Calculate the area of the <span>circular piece of fabric.
Step 2. Multiply the area of the piece by the price of </span><span>$5.40 per ft² to get the total cost.

Step 1.
The area (A) of the circle with radius r is:
A = </span>π r²
π = 3.14
r = 1.2 ft

A = 3.14 * (1.2 ft)²
A = 3.14 * 1.44 ft²
A = 4.52 ft²

Step 2.
Make a proportion
1 ft² costs $5.40
4.52 ft² cost x

1 ft² : $5.40 = 4.52 ft² : x
x = 4.52 ft² * $5.40 / 1 ft²
x = $24.41
3 0
2 years ago
How do you simplify 50 1/2+ -12.3
levacccp [35]

50 1/2 = 50.5

50.5 + -12.3

When adding a negative number to a positive number, it basically becomes just subtraction so  50.5 + -12.3 means 50.5 - 12.3

50.5 - 12.3 = 38.2

3 0
3 years ago
Please help me on this it a about to be due
makvit [3.9K]

Answer:

A

Step-by-step explanation:

sin is opposite/hypotenuse, which is 24/26, simplifying to 12/13

8 0
3 years ago
Read 2 more answers
If 3x is one factor of 3x^2-9x, what is the other factor?
Rudik [331]
The answer is:  " (x² − 3) " .
_________________________________
Explanation:
_________________________________

Given:  3x² <span>− 9x ;  factor out a "3x" ; 
_________________________________
 
   </span>→  3x (x² − 3) ;
_________________________________
     The answer is:  " (x² − 3) " .
_________________________________
7 0
3 years ago
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