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Hatshy [7]
3 years ago
5

The table shows the cost for ordering a certain number of tacos. What is the value of x if the cost is proportional to the numbe

r of tacos ordered? ​

Mathematics
2 answers:
schepotkina [342]3 years ago
8 0

Answer:

it would be tacos times 1.3 so $7.80

Rus_ich [418]3 years ago
6 0

Answer:

X=7.8

Step-by-step explanation:

2.6 ÷ 2 = 1.3

1.3 × 6 = 7.8

X=7.8

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Answer:

x+2=x+2

Step-by-step explanation:

Combine like terms

3x+(-2x) and (-7)+9

x+2=x+2

7 0
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Instructions: Solve the following equation for the variable given.
frutty [35]

Answer:

x = -1

Step-by-step explanation:

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7 0
3 years ago
Solve the following quadratic by factoring.
Lina20 [59]

Answer:

4, -1

Step-by-step explanation:

We can reverse the FOIL (First, outside, inside, last) method to break down the equation. The question is asking to solve by factoring so you want to find the right combination of numbers this equation can be broken down into:

x^2 - 3x - 4 = 0

Because we want x squared, x needs to be multiplied by itself, so we can put x in the first slot for each.

(x + or - ?) ( x + or - ?) = 0

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(x - 4) (x + 1) = 0

To test that this is equal to the original equation, simply multiply it out using FOIL.

x * x = x^2

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Putting each component into an equation:

x^2 + x - 4x - 4 = 0

Simplifying:

x^2 - 3x - 4 = 0

Once we are sure it is still the same equation, we find the solutions. We know 0 multiplied by anything equals 0, so to get 0 as the answer, one of the sets in the parentheses must equal 0. (It doesn't matter what the other one is as long is one equals 0)

Therefore, we have 2 solutions, 4, and -1 because if x is 4, 4-4 is 0 which solves the equation, and if x is -1, then -1 + 1 is 0 which also solves the equation.

You can also check your answers by plugging them back into the original equation.

5 0
3 years ago
What is the length of the side adjacent to LZ? Will give brainliest
mojhsa [17]

9514 1404 393

Answer:

  16

Step-by-step explanation:

Angle Z is not the right angle, so the rays that make up the angle are ...

  • hypotenuse ZX
  • adjacent leg ZY

The length of the adjacent leg ZY is shown as 16.

7 0
3 years ago
18. What is the solution to the system of equations?
AlekseyPX

Answer:

The solution to the system of equation is (0 , -2 , 1).

Step-by-step explanation:

You can check the solutions of the equations by putting the values of x, y, and z one by one.

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