Please tell me the what to do with this problem

Mathematics

2 answers:

Brums [2.3K]3 years ago

8 0

Answer:

3x+2y

Step-by-step explanation:

You should first convert the plain and printed t-shirts prices into variables. I called the plain t-shirts price "x" and the printed t-shirts price "y". There are three plain t-shirts, so the price of the plain t-shirts are 3x. There are two printed t-shirts, so the price of them would be 2y. Add them and you'll get 3x+2y

frez [133]3 years ago

7 0

Because the prices are different, you need to use two variables, one for each price.

Let the price for the plain one be X and the price for the printed one be Y.

You would multiply the number of each shirt by the variable:

3 plain would be 3X and 2 printed would be 2Y.

You then need to add those together to get the total cost:

Total cost = 3X + 2Y

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lesantik [10]

Answer:

Option C; 3x - y = -27 and x + 2y = 16

Step-by-step explanation:

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2. Now let us consider the equation 3x - y = -27. Let us consider the x-intercept in this case. That being said, ⇒ 3x - ( 0 ) = -27 ⇒ 3x = -27 ⇒ x = -9 when y = 0. As we can see, this coordinate matches with one of the coordinates of line q, which might mean that the second equation could match with the equation for line v.

3. To see whether Option 3 is applicable, we must take a look at the 2nd equation x + 2y = 16. Let us calculate the y - intercept here: ( 0 ) + 2y = 16 ⇒ 2y = 16 ⇒ y = 8 when x = 0. Here we can see that this coordinate matches with that of the second coordinate provided as one of the points in line v. That means that ~ Answer: Option C

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3 years ago

Express 19.79 as a mixed number.

sergey [27]

Write the decimal number as a fraction
(over 1)
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we multiply top and bottom by 2 10's

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Denominator = 1 × 10 × 10 = 100

Numerator / Denominator = 1979 / 100

Simplifying our fraction

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= 1979/100

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