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3 years ago

I need answer for this any one help me please

Mathematics

1 answer:

WITCHER [35]3 years ago

6 0

Answer:

C = 97.20

Step-by-step explanation:

Given that C varies as r² then the equation relating them is

C = kr² ← k is the constant of variation

To find k use the condition C = 202.80 when r = 2.6

k = $\frac{C}{r^{2} }$ = $\frac{202.8}{2.6^{2} }$ = 30

C = 30r² ← equation of variation

When r = 1.8, then

C = 30 × 1.8² = 97.20

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3 years ago

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Nonamiya [84]

Answer:

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Step-by-step explanation:

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3 years ago

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4 years ago

Read 2 more answers

Y=4x x+y=5 use substitution method

dalvyx [7]

Answer:

x = 1, y = 4

Step-by-step explanation:

y = 4x

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Since 4x is equal to the variable y, we can substitute it in for y in the second equation.

x + (4x) = 5

Solve for x.

x + 4x = 5

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Now that we have solved for x, we need to solve for y.

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We can plug both of our answers into any one of the given equations to check our work

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3 years ago

Question 11

blondinia [14]

Answer:

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4 years ago

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I need answer for this any one help me please​

I need answer for this any one help me please