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3 years ago

Jordan gets paid to mow his neighbor's lawn. For every week that he mows the lawn, he earns $20. What is the rule as an algebrai

c expression to model the relationship?

Mathematics

1 answer:

lilavasa [31]3 years ago

6 0

$We\ can\ write\ it\ as\ a\ function:\\y=20x\\\\x-number\ of\ weeks\\y-earnings\\Earnings\ depands\ on\ number\ of\ weeks.$

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Can two lines be drawn from a point not on a line that will meet the line at a right angle? at a 45° angle? explain each answer.

vichka [17]

I believe the the correct answer would be yes. Two lines can be drawn from a point that is not collinear with a certain line that will meet the line at a right angle or 90 degree angle and at an angle of 45 degrees. We can freely draw any line that would pass through a given point and would cross a given line at any direction giving us different angles and this would include a 90 and 45 degree angle.

5 0

3 years ago

(6,-2) and a slope of 4/3 in point slope form

Rufina [12.5K]

Answer: y=4/3x-10

Step-by-step explanation: Find the equation using Point-Slope formula.

Hope this helps you out! ☺

7 0

3 years ago

Solve x + 3y = 9 3x – 3y = -13 (1 point)

zavuch27 [327]

Answer:

(-1, 10/3)

x = -1

y = 10/3

Step-by-step explanation:

To solve a system, one of the methods you can use is elimination. To use elimination, you need a variable to have the same coefficient in BOTH equations. Since both equations have "3y", with the same coefficient (3), we can use this method.

We want to eliminate a variable by cancelling it out. Since positive 3y PLUS negative 3y is 0, the variable in eliminated. ADD each of the terms in the equations together.

. x + 3y = 9

+ 3x – 3y = -13

. 4x – 0y = -4 3y - 3y = 0

. 4x = -4 Divide both sides by 4 to isolate 'x'

. x = -1 Solved for the x-coordinate

Since we know one variable, 'x', we can easily find the other, 'y'. Substitute 'x' with -1 in any of the equations. Then, isolate 'x'.

x + 3y = 9

(-1) + 3y = 9

-1 + 1 + 3y = 9 + 1 Add 1 to both sides to cancel out left side.

3y = 9 + 1 Add on the right side (9 + 1 = 10)

3y = 10 Divide both sides by 3 to isolate 'y'

y = 10/3 Solved for the y-coordinate

Put the 'x' and 'y' coordinates together in an ordered pair, which you write as (x, y).

The solution to the system is (-1, 10/3).

5 0

3 years ago

Which expression is equivalent to the expression shown below?

posledela

The correct answer is: [D]: " (-5 $\frac{1}{4}$ )x − $\frac{1}{2}$ " .
_________________________________________________________

Explanation:
_________________________________________________________

" -1/2(-3/2x + 6x + 1) − 3x " ;

= (-1/2 * -3/2 x) + (-1/2 * 6x) + (-1/2 * 1) − 3x ;

= [ (-1 *-3) /(2*2)] x + (-3x) + (-1/2) ] − 3x ;

= [ (3/4)x − 3x − (1/2) ] − 3x ;

= (3/4)x − 3x − (1/2) − 3x ;

= ?? ; → Combine the "like terms" ;

→ "(3/4)x − 3x − 3x " = ?? ;

→ "(3/4)x − 3x = "(-9/4)x";

→ "(-9/4)x − 3x = "(-21/4)x " = " (-5 $\frac{1}{4}$ )x " ;

→ The answer is: " (-5 $\frac{1}{4}$ )x − $\frac{1}{2}$ " ;
___________________________________________________
→ which is:
___________________________________________________
→ Answer choice: [D]: " (-5 $\frac{1}{4}$ )x − $\frac{1}{2}$ " .
___________________________________________________

6 0

3 years ago

A/-6 + 8 = 12. a = Please help!!! Thanks so much! ~kweenie~

irina [24]

Answer:

a = -24

Step-by-step explanation:

-a/6 +8 = 12

Subtract 8 from each side

-a/6 +8-8 = 12 -8

-a/6 = 4

Multiply by -6 on each side

-a/6 * -6 = 4*-6

a = -24

8 0

3 years ago