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rosijanka [135]
4 years ago
13

A tennis instructor chargers $40 for each one hour lesson and $25 for each half hour lesson if the instructors I come from 35 le

ssons was $1115 how many one hour lessons did she give?
Mathematics
1 answer:
kaheart [24]4 years ago
7 0
X = 1 hr lessons and y = 1/2 hr lessons

x + y = 35......y = 35 - x
40x + 25y = 1115

40x + 25(35 - x) = 1115
40x + 875 - 25x = 1115
40x - 25x = 1115 - 875
15x = 240
x = 240/15
x = 16 <=== there are 16 one-hr lessons
and 19 half-hr lessons
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Rama09 [41]

Answer:

A is the Answer

Step-by-step explanation:

Since the population is being split up into 2 divisions out of 5,000.

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8 0
3 years ago
I need help with this math problem
cricket20 [7]
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4 0
3 years ago
The lengths of the sides of a triangle are in the extended ratio 7​: 9 ​: 10. The perimeter of the triangle is 52 cm. What are t
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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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The answer you're looking for my good lad is C
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3 years ago
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