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Komok [63]
3 years ago
13

Consider the situations.

Mathematics
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 <em>y </em>varies directly as <em>x</em> and <em>z</em>, the form of the equation is:

y=kxz

Where<em> k</em> is the constant of variation.

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

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

<em> </em>Substitute the value of <em>k</em>  into the expression. Then, the equation is:

y=\frac{2}{3}xz

To find the value of <em>y </em>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}

<em> </em>

5 0
3 years ago
Read 2 more answers
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

7 0
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

7 0
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

4 0
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

8 0
2 years ago
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