3 years ago

What's the answer & why is the answer correct

1 answer:

3 0

C because the number of picture sold would be x and the total cost would be y. So if you substitute the y and x values in, the equation would be true for all of the given data.

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Solve the simulateous equation 3x-4y=18 , 9x+2y=12

Naya [18.7K]

X=2 Y=-3
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3 years ago

What does the x mean and what is the answer. The back ground info says nothing about the x so I’m confused. It’s algebra

sdas [7]

Pretty sure it’s a variable .

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3 years ago

What is 30 percent markdowns of 776

valina [46]

Answer:

25.86

Step-by-step explanation:

776/30=25.86

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4 years ago

The value of y varies directly with x. If x = 3, then y = 21. What is the value of x when y = 105?

Vikentia [17]

Answer: 15

<u>Step-by-step explanation:</u>

varies directly means: $\frac{y}{x} = k$

Plug in the given values of x and y to solve for k: $\frac{21}{3} = k$ → 7 = k

Next, plug in the k-value of 7 and the given y value of 105 to solve for x:

$\frac{105}{x} = 7$

$\frac{105}{x}(\frac{x}{7}) = 7(\frac{x}{7})$

$\frac{105}{7} = x$

15 = x

6 0

3 years ago

sleet_krkn [62]

Answer:

$\frac{11}{20}$ Eleven out of 20 guests order the signature dish

Step-by-step explanation:

55% of a population can also be expressed in math terms as :

$\frac{55}{100} =\frac{11}{20}$

when we reduce the fraction to lower terms.

That is: 11 out of 20 guests order the signature dish

3 0

3 years ago