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vagabundo [1.1K]
3 years ago
5

A company charges $7 for a T-shirt and ships any order for $15. A school principal ordered a number of T-shirts for the school s

tore. The total cost of the order was $1,520. Which equation can be used to find the number of shirts ordered?
Mathematics
1 answer:
rosijanka [135]3 years ago
8 0
7x + 15 = 1520
It’s $7 times the unknown number of shirts (x). Plus $15 to ship. All has to equal the total of $1,520.
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Can anyone help me with question number 3
ira [324]
The answer is: There are 595 calories in a banana split 

To find this we first need to set up our equation: 

80= \frac{1}{7}x-5, where x= calories in a banana split


85= \frac{1}{7}x----------------Add 5 to both sides

595=x-------------------Multiply 7 to both sides to get rid of the fraction

So, there are 595 calories in a banana split

Hope this helps! :)
7 0
3 years ago
An orange has 20 fewer calories
tatyana61 [14]

Answer:

<em>90 calories in total</em>

Step-by-step explanation:

<em>We can solve this equation through the following steps:</em>

<em>Step One: Since we are told that a banana is 20 less calories than an orange, we can create the Let Statements:</em>

<em>Let x= the calories in a banana</em>

<em>Let x-20=the calories in an orange</em>

<em>Step Two: Create an equation</em>

<em>Since we are told "7 bananas have the same calories as 9 oranges" we translate"</em>

<em>7x=9(x-20) Distribute</em>

<em>7x=9x-180 Subtract 9x from both sides of the equation</em>

<em>7x-9x=-180 Simplify</em>

<em>-2x=180 Divide both sides by -2</em>

<em>x=90</em>

<em>∴There are 90 calories in a banana. </em>

5 0
3 years ago
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First\ solve\ system\ of\ equations\ to\ find\ values\ of\ x\ and\ y\\\\ \left \{ {{3x+y=19\ \ |*(-3)} \atop {x+3y=1\ \ \ \ \ \ \ \ \ }} \right.\\\\ \left \{ {{-9x-3y=-57} \atop {x+3y=1 }} \right.\\+------\\Addition\ method\\\\&#10;-8x=-56\ \ |:(-8)\\\\x=7\\\\y=19-3x=19-3*7=19-21=-2\\\\&#10;2x+2y=2*7+2*(-2)=14-4=10\\\\Answer\ is\ 10.
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3 years ago
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4 0
3 years ago
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Determine if the given sequence is an arithmetic sequence. If it is, identify the common difference.
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Answer:

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Is there a common difference and if so, what is it?

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The common difference is 1

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