3 years ago

Consider the situations.

1 answer:

maks197457 [2]3 years ago

3 0

Only i.

If the value is changing by a certain dollar amount every year, this means it is a constant rate of change. If it is changing by a certain percentage every year, this means it is changing at a non uniform, specifically exponential, rate.

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Find the constant of variation for the relation and use it to write an equation for the statement. Then solve the equation.

hammer [34]

Answer: option d.

Step-by-step explanation:

If y varies directly as x and z, the form of the equation is:

$y=kxz$

Where k is the constant of variation.

If y=4 when x=6 and z=1 then substitute these values into the expression and solve for k:

$4=k(6)(1)\\4=6k\\k=\frac{4}{6}\\\\k=\frac{2}{3}$

Substitute the value of k into the expression. Then, the equation is:

$y=\frac{2}{3}xz$

To find the value of y when x=7 and z=4, you must substute these values into the equation. Therefore you obtain:

$y=k=\frac{2}{3}(7)(4)$

$y(7,4)=\frac{56}{3}$

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3 years ago

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Without graphing, tell whether the point (10, 37) is on the graph of y = 3x + 7.

slava [35]

Answer: YES

Plug in the numbers in your head.

y=3(10)+7

y=30+7

y=37 which is the y intercept

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3 years ago

A pre-school has 12 four-year old children and 11 three-year old children. What is the ratio of four-year old

madreJ [45]

Answer:

12:11

Step-by-step explanation

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2 years ago

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20 points if you can answer this expression and give me 2 equivalent expressions SHOW YOUR WORK PLEASE!!! 32(10j + 17 + 5j)

Roman55 [17]

Answer:

Brainliest!

Step-by-step explanation:

32(10j + 17 + 5j)

equvilatnt equations include:

320j + 32(17+5j)

32(10j+17)+160j

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3 years ago

Please help! I’ll give brainliest!:)

bearhunter [10]

Answer:

1467

Step-by-step explanation:

i know this because taking a negative number and a positive is like adding and then you subtract 144 and you get 1467

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2 years ago