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Vedmedyk [2.9K]
2 years ago
13

Mr Smith bought x number of shirts for the new members of her chorus. The cost for x number of shirts, including $3.99 shipping

was $77.49. Each shirt cost $12.25. There was no sales tax on this purchase. Which equation could be used to find x?
Mathematics
1 answer:
fiasKO [112]2 years ago
4 0

We are given that the cost of each shirt = $12.25

It is given that she bought total 'x' shirts, each of cost $12,25.

So, the cost of 'x' shirts is  dollars

Also, there is a shipping charge of $3.99

So, the total cost of 'x' shirts is

Since, the shirts cost her total $77.49.

We have the equation,

12.25x + 3.99 = 77.49

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2 years ago
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Answer:

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Step-by-step explanation:

We need to find the measures of the interior  angles in a pentagon if the measure  of each consecutive angle is in the  ratio 9:6:10:8:12.

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So, adding all angles and equal them to 540, we can find value of x

9x+6x+10x+8x+12x=540\\45x=540\\x=\frac{540}{45}\\x=12

So, we get the value of x: x=12

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Angle 1 = 9x = 9(12) = 108°

Angle 2 = 6x = 6(12) = 72°

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