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Nata [24]
2 years ago
9

If y = 8 when x 8 when x = 3, find y when x = 45.

Mathematics
1 answer:
Zarrin [17]2 years ago
4 0

Answer:

y = 120

Step-by-step explanation:

y = kx ur finding k

8 = k 3 get k alone by dividing both sides by 3 --> 8/3 = k

k = 8/3

Y = 8/3 45 now your finding Y when x is 45

Y = 120

to make sure do 120 = 8/3 45 should equal the same

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Sergeu [11.5K]

Answer:

TU = 15

Step-by-step explanation:

Given

\square MNOP \simeq\ \square STUV

NO = 10

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TU = x

UV = 6

Required

Determine the length of TU (i.e. x)

Because both shapes are similar, then the following equivalent ratios exist:

NO : OP = TU : UV

Substitute values for NO, OP, TU and UV

10 : 4 = x : 6

Represent as fraction

\frac{10 }{ 4 } = \frac{x }{ 6}

Multiply both sides by 6

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Hence:

TU = 15

7 0
3 years ago
If f (x) = 3x²-7 , find f(4)
vitfil [10]
Hello, 
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6 0
3 years ago
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Answer:

(0, inf)

Step-by-step explanation:

The average rate of change of a function is related to it's first derivative. When the first derivative is positive, the average rate of change is positive, which means that the function is crescent.

Now, when the first derivative is negative, the average rate of change will be negative too, and the function is going to be decrescent.

In your function.

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3 years ago
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