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wolverine [178]
2 years ago
9

The system x−6y=4, 3x−18y=4 has no solution.

Mathematics
1 answer:
stealth61 [152]2 years ago
6 0
Ok fist you wanna change your question into a equation so it would turn into x-6 y=4 and 4.3x - 18 y = 4 then multiple both sides and that pups give you 43x - 180 y = 40 and eliminate one variable and I don’t wanna keep explaining but the the answer is



ANSWER: (x , y ) = (- 80 over 13, and - 22 over 13
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Find the value of tan(B)<br><br> please help quickly
elena55 [62]

Answer:

it is 4/3

Step-by-step explanation:

because tan(B) = opposite/adjacent

4 0
3 years ago
Find the slope using the formula, (-11,3) and (-7,5)
Flura [38]

Answer:

y = 1/2x+8.5

Step-by-step explanation:

From (-11,3) to (-7,5) you get an average of 4 units to the right and 2 units up, divide that and you get 2 units right and 1 unit up in which the middle is (-9, 4).   Add that until you get to (1, 9), go back one unit to get (0, 8.5), the slope is 1/2x because it is going 1 unit up and 2 units right.

7 0
2 years ago
a local community theather 240 tickets for Saturday nights performance they sold 180 more st full price then the discount ticket
gizmo_the_mogwai [7]

Question:

The local community theater sold a total of 240 tickets for Saturday night’s performance. They sold 180 more full-price tickets than discount tickets. Which system of equations can be used to model this situation?

Answer:

x = 180 + y

x + y = 240

Step-by-step explanation:

Given

Tickets = 240

Represent the number of full price with x and discounted price with y.

From the question:

x = 180 more than y

So:

x = 180 + y

Also, a total of 240 were sold.

So:

x + y = 240

Hence, the equations are:

x = 180 + y

x + y = 240

Solving further;

Substitute 180 + y for x in x + y = 240

180 + y + y = 240

180 + 2y = 240

Solve for 2y

2y = 240 - 180

2y = 60

Divide through by 2

y = 30

Recall that: x = 180 + y

x = 180 + 30

x = 210

Hence:

<em>Full Price = 210</em>

<em>Discounted = 30</em>

<em />

3 0
3 years ago
The charge to rent a movie from a store is $3.50 for 3 days, which includes the day the movie is rented. A late fee of $1.00 is
Dahasolnce [82]
Monday to Friday is 5 days
$3.50 for 3 days + $2.00 for 2 days
=$5.50
7 0
3 years ago
Which ordered pair is a solution of the equation?
ankoles [38]

Answer:

D, neither

Step-by-step explanation:

If you want to solve this through elimination, just substitute the given points in each choice. (a,b) → (x,y)

In a coordinate the first number is the x value, and the second is the y.

All you have to do is substitute the indicated values given in the coordinate into the point slope equation, and determine whether or not the equation is true. If the equation is true (for example 1 = 1) the order pair IS a solution. If the equation is false (for example 1 = 2), than the ordered pair IS NOT a solution.

If you want to look at this linear equation solving for the quantity y, then use slope intercept.

Choice 1 is incorrect because (5,4) →

y - 4 = 7(x - 6) → (4) - 4 = 7((5) - 6) →

0 = 7(-1) → 0 = -7 (0 is never equal to -7) ; contradictory

Choice 2 is incorrect because (6,5) →

y - 4 = 7(x - 6) → (5) - 4 = 7((6) - 6) →

1 = 7(0) → 1 = 0 (1 is never equal to 0) ; contradictory

Therefore Choice 3 must be incorrect as well because neither of these two pairs are solutions, so combining two pairs that do not satisfy the equation does not make it any more true.

Since Choice 4 is the remaining choice, it must be the correct answer.

The points that fit on this line are given by the slope intercept equation: y = 7x - 3.

To convert point slope form to slope intercept form, first distribute everything in the parenthesis. Then remove all the terms besides y from the left side of the equation to the right:

y - 4 = 7(x - 6) → y - 4 = 7(x) + 7(-6) →

y - 4 = 7x - 42 → y - 4 + 4 = 7x - 42 + 4 →

y = 7x - 38.

Just substitute the x or y value into the equation, and find the corresponding y or x variable that fits the line.

6 0
2 years ago
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