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3 years ago

Calculate the constant of variation if y varies directly as x.

Mathematics

2 answers:

Y_Kistochka [10]3 years ago

6 0

Answer:

k = - $\frac{3}{2}$

Step-by-step explanation:

since y varies directly as x, then the equation connecting them is

y = kx ← k is the constant of variation

to find k use the given condition y = - 3 when x = 2, thus

k = $\frac{y}{x}$ = $\frac{-3}{2}$ = - $\frac{3}{2}$

Anton [14]3 years ago

5 0

The answer is A -3/2

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If 7x+10=44, what is the value of 7x-50?

Daniel [21]

Answer:

-16

Step-by-step explanation:

So let’s solve for 7x. So 7x=34. So 7x-50 is 34-50 or -16

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3 years ago

Please help me I honestly have zero clue how to answer this question

Iteru [2.4K]

Step-by-step explanation:

$n = 3 \times 5 {}^{2} \times {x}^{3}$

Square both sides of the equation.

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3 years ago

Jill has been watching the squirrels that live in her neighborhood. The number of squirrels changes each week. n f(n). 1 8. 2 12

qaws [65]

Answer: D) $f(n)=8(1.5)^{n-1}$

Step-by-step explanation:

From the given table we can see that this is not representing a linear function as the rate of change is not constant.

So it can be exponential growth function $A(b)^{n-1}$ , where A is the initial amount , b is the multiplicative rate of growth and n is the time period in weeks.

Now here at n=1 , f(n)=8

Therefore, A=8

Now, for n=2

$f(2)=8(b)^{2-1}\\\Rightarrow12=8b\\\Rightarrow\ b=\frac{12}{8}\\\Rightarrow\ b=1.5$

By substitute the values of A and b in the above equation, we get the equation $f(n)=8(1.5)^{n-1}$

Therefore, the function best shows the relationship between n and f(n) is

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7 0

3 years ago

Read 2 more answers

Arithmetic sequences please see photo

damaskus [11]

Answer:

1, yes add one, 2, no, 3, yes, you add 10. 4, no, 5, yes, you add 2.

Step-by-step explanation:

1 add one, 3 add 10 5 add 2.

Your welcome :)

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pav-90 [236]

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