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scZoUnD [109]
3 years ago
8

PLEASE HELP ASAP

Mathematics
1 answer:
tekilochka [14]3 years ago
6 0
X-y= 15
2y-x=2

Adding these two together:
Y=17
Therefore, x = 32
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If y varies inversely as x, and y = 23 when x<br> 8, find y when x 4.
Virty [35]

Answer:

y = 46

Step-by-step explanation:

Given y varies inversely as x then the equation relating them is

y = \frac{k}{x} ← k is the constant of variation

To find k use the condition y = 23 when x = 8 , then

23 = \frac{k}{8} ( multiply both sides by 8 )

184 = k

y = \frac{184}{x} ← equation of variation

When x = 4 , then

y = \frac{184}{4} = 46

7 0
3 years ago
Doug bought a new car for $25,000. He estimates his car will depreciate, or lose value, at a rate of 20% per year. The value of
strojnjashka [21]

Answer:

Step-by-step explanation:

The equation actually looks like this

V=P(1-r)^t and filling in the info given:

V=25,000(1-.2)^{4.5 which simplifies to

V=25,000(.8)^{4.5

Orders of operation tells us that we need to take care of the exponential stuff first, so

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4 0
3 years ago
Read 2 more answers
58.6 km/h in cm/min solve and explain me ​
Dominik [7]

Answer:

PLEASE MARK AS BRAINLIEST!!!!!!!

58.6 kilometer/hour = 97666.666667 centimeter/minute

Step-by-step explanation:

How to Convert Centimeter/minute to Kilometer/hour

1 cm/min = 0.0006 km/h

1 km/h = 1666.6666666667 cm/min

Example: convert 15 cm/min to km/h:

15 cm/min = 15 × 0.0006 km/h = 0.009 km/h

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3 years ago
Eight minus the quotient of two and a number x.
san4es73 [151]

Step-by-step explanation:

8-2÷x

it should be written like that

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3 years ago
What is the vertex of y=ax^2+c
levacccp [35]

9514 1404 393

Answer:

  (0, c)

Step-by-step explanation:

Compare the given equation to the vertex form equation ...

  y = a(x -h)^2 +k . . . .  quadratic with vertex (h, k)

You have ...

  y = ax^2 +c

Matching these forms, we see that h=0, and k=c. Then the vertex is ...

  (h, k) = (0, c)

8 0
3 years ago
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