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aliina [53]
3 years ago
6

suppose that y varies jointly with x and z. Find your when x=3 and z=5 , given that y=72 when x=6 and z=4

Mathematics
1 answer:
Hitman42 [59]3 years ago
3 0
Y α xz

y = kxz             y = 72, when x = 6, and z = 4

72 = k*6*4

72 = k*24

24k = 72

k = 72/24

k = 3.

<span>y = kxz    
</span>
<span>y = 3xz    </span>

Finding y, when x = 3, z = 5.

y = 3xz

y = 3*3*5

y = 45
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6 0
3 years ago
6+n/60=15/90<br><br> How do I dolce this
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The school that Lisa goes to is selling tickets to the annual talent show. On the first day of ticket sales the school sold 4 se
kakasveta [241]
Let:
x = cost of senior citizen ticket
y = cost of student ticket

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4x + 5y = 102
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x = (102 - 5y)/4
x = 102/4 - 5y/4

7x + 5y = 126
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note:
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-8.75y + 5y = 126 - 178.5
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y = -52.5/-3.75
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x = 102/4 - 5y/4
x = 102/4 - 5(14)/4
x = 8

x = cost of senior citizen ticket = $8/ea
y = cost of student ticket = $14/ea



6 0
2 years ago
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